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Seasonic Vertex GX-850 | 850W | 80+ Gold | ATX 3.0 & PCIe 5.0 Ready | Full-Modular | ATX Form Factor | Low Noise | Premium Japanese Capacitor | Nvidia RTX 30/40 Super & AMD GPU Compatible

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4.7 3,139 ratings

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Amazon's Choice in Computer Power Supplies by Seasonic

$149.99 with 12 percent savings

List Price: $169.99

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Style: VGX-12 YEAR WARRANTY

Size: 850 Watts

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Purchase options and add-ons

Model Name	VERTEX GX-850
Brand	Seasonic
Compatible Devices	Personal Computer
Connector Type	atx,pcie
Output Wattage	850
Form Factor	ATX
Wattage	850 watts
Cooling Method	Air
Item dimensions L x W x H	6.3 x 5.9 x 3.4 inches
Item Weight	4.34 Pounds

About this item

Fully compatible with ATX 3.0 and PCIe 5.0 standards
Full modularity for the best cable management options
Added 12VHPWR cable to comply with the new graphic cards
135mm Fluid Dynamic Bearing (FDB) fan for quiet operation
Seasonic Hybrid Silent Fan Control for optimal cooling
Complete protection features: OPP / OVP / UVP / SCP / OCP / OTP
12 years warranty - our commitment to high quality

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	This Item Seasonic Vertex GX-850 \| 850W \| 80+ Gold \| ATX 3.0 & PCIe 5.0 Ready \| Full-Modular \| ATX Form Factor \| Low Noise \| Premium Japanese Capacitor \| Nvidia RTX 30/40 Super & AMD GPU Compatible	Recommendations Seasonic FOCUS PX-750 \| 750W \| 80+ Platinum \| Full Modular \| ATX Form Factor \| Low Noise \| Premium Japanese Capacitor \| 10 Year Warranty \| Nvidia RTX 30/40 Super & AMD GPU Compatible (Ref. SSR-750PX)	dummy Seasonic Focus GX-1000, 1000W 80+ Gold, Full-Modular, Fan Control in Fanless, Silent, and Cooling Mode, 10 Year Warranty, Perfect Power Supply for Gaming and Various Application, SSR-1000FX.	dummy Seasonic Vertex GX-1000 \| 1000W \| 80+ Gold \| ATX 3.0 & PCIe 5.0 Ready \| Full-Modular \| ATX Form Factor \| Low Noise \| Premium Japanese Capacitor Nvidia \| RTX 30/40 Super & AMD GPU Compatible	dummy Seasonic Focus SSR-850FM, 850W 80+ Gold, Semi-Modular, Fits All ATX Systems, Fan Control in Silent and Cooling Mode, 7 Year Warranty, Perfect Power Supply for Gaming and Various Application	dummy Seasonic Prime TX-1300 \| 1300W \| 80+ Titanium\| ATX 3.0 & PCIe 5.0 Ready\| Full Modular \| ATX Form Factor \| Premium Japanese Capacitor \| Nvidia RTX 30/40 Super & AMD GPU Compatible (Ref. SSR-1300TR2)
	Try again! Details Added to Cart spCSRF_Control	Try again! Details Added to Cart spCSRF_Control	Try again! Details Added to Cart spCSRF_Control	Try again! Details Added to Cart spCSRF_Control	Try again! Details Added to Cart spCSRF_Control	Try again! Details Added to Cart spCSRF_Control
Price	-12% $149.99 List: $169.99	-25% $119.99 Typical: $159.99	$129.99	-11% $169.99 List: $189.99	-37% $95.05 List: $149.99	$492.77
Delivery	Get it as soon as Friday, Jun 28	Get it as soon as Friday, Jun 28	Get it as soon as Friday, Jun 28	Get it as soon as Friday, Jun 28	Get it as soon as Friday, Jun 28	Get it as soon as Friday, Jun 28
Customer Ratings	4.73,139	4.7268	4.7268	4.73,139	4.725	4.637
Energy efficiency	4.7	4.8	4.8	4.7	4.7	4.3
Easy to install	4.7	4.8	4.8	4.7	4.4	4.7
Noise level	4.7	4.9	4.9	4.7	4.4	4.4
Quality of material	4.6	4.6	4.6	4.6	—	—
Durability	4.6	4.6	4.6	4.6	—	—
Sold By	Amazon.com	Amazon.com	Amazon.com	Amazon.com	Skytech	Amazon.com
power supply design	Full Modular	Full Modular	Full Modular	Full Modular	Semi-Modular	Full Modular
connector type	atx,pcie	ATX	ATX	atx,pcie	ATX	ATX
form factor	ATX	ATX	ATX	ATX	ATX	ATX
cooling method	Air	Air	Air	Air	Air	—
fan count	1	1	1	1	1	1
wattage	850 watts	750 watts	1000 watts	1000 watts	850 watts	1300 watts

From the manufacturer

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Product information

Technical Details

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Other Technical Details

Brand

‎Seasonic

Series

‎VERTEX GX-850

Item model number

‎VERTEX GX-850

Item Weight

‎4.34 pounds

Product Dimensions

‎6.3 x 5.9 x 3.4 inches

Item Dimensions LxWxH

‎6.3 x 5.9 x 3.4 inches

Manufacturer

‎SEASONIC

ASIN

‎B0BQRDR7QM

Country of Origin

‎China

Date First Available

‎February 25, 2023

Additional Information

Customer Reviews

4.7 3,139 ratings

4.7 out of 5 stars

Best Sellers Rank

#1,522 in Computer Power Supplies

Warranty & Support

Amazon.com Return Policy:You may return any new computer purchased from Amazon.com that is "dead on arrival," arrives in damaged condition, or is still in unopened boxes, for a full refund within 30 days of purchase. Amazon.com reserves the right to test "dead on arrival" returns and impose a customer fee equal to 15 percent of the product sales price if the customer misrepresents the condition of the product. Any returned computer that is damaged through customer misuse, is missing parts, or is in unsellable condition due to customer tampering will result in the customer being charged a higher restocking fee based on the condition of the product. Amazon.com will not accept returns of any desktop or notebook computer more than 30 days after you receive the shipment. New, used, and refurbished products purchased from Marketplace vendors are subject to the returns policy of the individual vendor.

Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

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Product Description

*ATX 3.0 and PCIe Gen 5 ready with 600W 12VHPWR Gen 5 cable. *It is a flexible solution that optimizes cable management and reduces clutter inside the computer case. *Improved load regulation reduces voltage variations to provide smooth and stable operations. *The lubrication inside the FDB greatly reduces friction, vibration and noise and increases the lifetime of the fan. *The industry's first three-phased advanced thermal control achieves an ideal balance between silence and cooling at all loads via three operational stages: Fanless Mode, Silent Mode, and Cooling Mode. The benefits of this system are: - The Fanless Mode provides unsurpassed silent performance. - Heat dissipation is optimized while noise output is kept at the minimum. - The lower number of fan rotations extends the life of the fan. If the PC case requires constant active cooling, there is a switch at the back of the power supply which allows users to turn off the hybrid mode and have the fun run at all times. *Enhanced +12 V current capability broadens utilization possibilities. *Superior dynamic response and greater system stability maximize the 12 V DC rail output. * Sea Sonic's engineers have implemented a new design feature, where instead of cables, the back panel and PCB (Printed Circuit Board) are connected by a copper plate. This breakthrough solution not only lowers the chance of production errors during manual insertion but it also improves output power quality. *Gold plating reduces current transmission resistance and increases efficiency. *Top-grade, Japan-sourced components extend product life and ensure operation stability under extreme conditions. *Our commitment to superior quality.

Customer reviews

4.7 out of 5

3,139 global ratings

Zero tolerance for fake reviews

Customers say

Customers like the compactness, noise level, quality and performance of the system power device. They mention that it fits perfectly in their case, has a hybrid silent fan mode and that it works great. They appreciate the value for money saying that it's the best price vs performance.

AI-generated from the text of customer reviews

362 customers mention301 positive61 negative

Customers like the quality of the power supply. They say it's well made, has high quality features, and is very reliable. Some customers are impressed by the quality cables and fan. Overall, they say it is a great product and great for modern GPUs.

"Impressed by the quality of the cables during install. Also came with plenty of extra’s if needed. Runs silent and without issues so far!..." Read more

"this unit is excellent. great price for the quality you are getting. no issues setting up and cables are very high quality which is a plus...." Read more

"...It looks great, the build quality is solid, the cables are a much higher quality than what comes standard with most other power supplies, and it's..." Read more

"...Overall great high quality PSU and because of Seasonic’s rock solid reputation and stellar quality they will always be my go to for power..." Read more

268 customers mention241 positive27 negative

Customers like the performance of the power supply. They say it runs great, works perfectly, and is an excellent power supply for a system with a powerful graphics card. It delivers clean, consistent power, and it runs silent and without issues. Installation was simple, and everything worked right out of the box.

"...lot of excellent in depth reviews on this unit that prove it’s excellent performance...." Read more

"...Also came with plenty of extra’s if needed. Runs silent and without issues so far!..." Read more

"...two of these, 1 for my son and the other for my computer and they both worked well...." Read more

"...because it couldn't handle my new GPU power requirements and it works like a charm!" Read more

190 customers mention172 positive18 negative

Customers like the noise level of the system power device. They say it's great for smaller cases, has a hybrid silent fan mode that only starts the fan when needed, and has no coil whine or strange fan behaviors.

"Very easy PSU to work with. No noticeable noise. Love that it comes with a cable just for newer GPUs, RTX 4080 Super in my case...." Read more

"...Also came with plenty of extra’s if needed. Runs silent and without issues so far!..." Read more

"...fan mode (as opposed to the semi-fanless hybrid mode), it makes no discernible noise when the rest of my PC's fans are turned completely off...." Read more

"So far so good. Ultra quiet and cool to warm to the touch even at load. These are literally the best PSUs in the business...." Read more

154 customers mention146 positive8 negative

Customers find the installation of the system power device to be easy. They mention that it's nicely built, quiet, and easy to integrate into their case. The compact wiring makes it easy to manage the cables. Some say the instructions are pretty basic, but the completely modular cable design makes the install a snap.

"Very easy PSU to work with. No noticeable noise. Love that it comes with a cable just for newer GPUs, RTX 4080 Super in my case...." Read more

"...great price for the quality you are getting. no issues setting up and cables are very high quality which is a plus. easy to register for the warranty." Read more

"Easy install, great quality. Replaced old power supply because it couldn't handle my new GPU power requirements and it works like a charm!" Read more

"...It was easy to assemble because it included a new standard cable that can be used with the graphics card." Read more

144 customers mention144 positive0 negative

Customers are satisfied with the cables of the system power device. They mention that the cables are fully modular, individually braded, and protected by a mesh sleeving. They also appreciate the huge variety of individual cables with great connections. Overall, customers are happy with the quality and functionality of the cables.

"Very easy PSU to work with. No noticeable noise. Love that it comes with a cable just for newer GPUs, RTX 4080 Super in my case...." Read more

"...They are durable, very flexible, with a huge variety of individual cables with great connections...." Read more

"...This also comes with the 600W power supply cable and is the new standard for the Nvidia 40 cards...." Read more

"...The cables are individually sleeved giving them an almost braided feel because this power supply is a native ATX 3.0 PSU if offers a direct 12VHPWR..." Read more

83 customers mention79 positive4 negative

Customers appreciate the value of the system power device. They say it's well-priced, saves a few bucks, and the price vs performance is the best.

"...Nothing of issue to note. Great price. Seasonic's been my go-to for some time now and they don't disappoint." Read more

"...makes replacing or upgrading the cables a much easier and cost effective proposition." Read more

"this unit is excellent. great price for the quality you are getting. no issues setting up and cables are very high quality which is a plus...." Read more

"...high quality power supply that offers great power efficiency for a great price. Its standard size also makes it easy to fit into almost any build...." Read more

52 customers mention52 positive0 negative

Customers find the system power device compact and quiet. They say the 140mm length is great for smaller cases and the fully modular cables make installation easy. Customers also say the size is cool and the smaller design helps a lot.

"...Its standard size also makes it easy to fit into almost any build...." Read more

"...Not the mention, the cables were a lot easier to manage. Slimmer design helps a lot! Happy with this purchase!" Read more

"low fan noise, easy to install, and compact wiring making it easy and clean." Read more

"...Fully modular, 80+ Gold efficiency, small in size to fit into nearly any case, high quality components, the option via toggle switch to enable Eco..." Read more

46 customers mention39 positive7 negative

Customers like the appearance of the system power device. They say it looks great, has a cool design, and the cables are beautiful. They also appreciate the thoughtful modular design and the absence of clashing colors in the case.

"...It looks great, the build quality is solid, the cables are a much higher quality than what comes standard with most other power supplies, and it's..." Read more

"...came stored in two branded bags that ill be keeping because they look nice. Good product and extra pcie slots will be great for modern gpus." Read more

"...It’s small, quiet(I’ve never heard it at all), looks good, efficient, fully modular, and has great reviews with a decade long warranty...." Read more

"...Pros:Looks nice. If it was exposed it would also look good with the Seasonic Logo and no PSU specs like on my old Rosewill...." Read more

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Pablo

Quality PSU with a modern touch

Reviewed in the United States on May 13, 2024

Style: VGX-12 YEAR WARRANTYSize: 850 WattsVerified Purchase

Very easy PSU to work with. No noticeable noise. Love that it comes with a cable just for newer GPUs, RTX 4080 Super in my case. Nothing of issue to note. Great price. Seasonic's been my go-to for some time now and they don't disappoint.

Helpful

richard bixler

It’s all about the cables!

Reviewed in the United States on April 29, 2024

Style: FV3-10 YEAR WARRANTYSize: 1000 WattsVerified Purchase

Seasonic is essentially the gold standard for PSU’s. You can find a lot of excellent in depth reviews on this unit that prove it’s excellent performance. However, there is one aspect of every review that is always overlooked, the cables!
I previously had a very expensive PSU from another brand. The reviews were stellar so I bought it without hesitation. The cables were terrible, with tons of redundant splits/connections, with stiff unbendable sleeves. Aftermarket cable replacements were pretty much non existent.
This Seasonic PSU has fantastic cables! They are durable, very flexible, with a huge variety of individual cables with great connections. Most importantly, Seasonic has stuck with this pin layout for a long time. This makes replacing or upgrading the cables a much easier and cost effective proposition.

4 people found this helpful

Helpful

D. Alexander

A fine replacement for the G-series

Reviewed in the United States on August 29, 2017

Style: Focus+ GoldSize: 650WVerified Purchase

This is an excellent power supply for a system with one powerful graphics card or two mid-range cards. A lighter system would be better-served by a version of same with lower wattage.

FEATURES:

The cable layout is like so:

1 x 24-pin motherboard (sheathed)
1 x 4/8-pin CPU (sheathed)
2 x 6/8-pin PCIe (sheathed)
2 x 4 SATA (not sheathed)
1 x 3 molex (not sheathed)
1 x floppy (not sheathed)

This is a fully modular power supply. Modularity means that some or all cables are attached separately so you can pick and choose what you need. This feature becomes more important as wattage goes up so you won't obstruct airflow with unused cables. The cable attachment mechanism is nice and chunky; better than flat inserts that put all four wires in line.

PERFORMANCE:

Fifteen years ago, most power supplies were about 70% efficient: for a 100W load, they'd pull about 140W from the wall. Not anymore. We now have six major PSU ratings: 80 Plus and 80 Plus Bronze, Silver, Gold, Platinum, and Titanium. These correspond to half-load efficiencies of 80%, 85%, 88%, 90%, 92%, and 94%. Efficiencies at 1/5 and 4/5 load are about 4% less than half-load. This unit is Gold-rated, and according to PCPer, meets the 90% efficiency requirement for that certification.

There isn't a strong economic argument for efficiency. Relative to a Bronze PSU, the FOCUS saves about $5 a year for a 24/7/365 100W load in most parts of the country. More noticeable is the acoustic difference. Every watt that isn't going into the system needs to be vented from the PSU. Less efficient units require a bigger or faster fan, which makes more noise. The fan in this one doesn't even turn on until a 200W draw and doesn't begin to ramp up until 400W. For the overwhelming majority of systems the overwhelming majority of the time, it'll be completely inaudible.

I haven't commented on ripple and other low-level power characteristics, partly because they're exemplary (par for the course for Seasonic), but also because they're irrelevant. Short of a no-brand $15 tin-box special, just about every PSU on a retail shelf is good enough for a modern system if the wattage is adequate. Computers require less power than they ever have (outside of gaming and overclocking) and motherboard power regulation is better than ever. This FOCUS has no bad behaviors under load, but you could put a $30 Corsair in your system with nary a difference.

IN SUM:

This is an excellent PSU for a system with a serious graphics card, and where noise performance and efficiency are at a premium. It's also rather well-priced like the G-series that preceded it. I've had at least four Seasonic power supplies. None have failed. None have had coil whine or strange fan behaviors that I've seen even on high-end models from other brands.

While Seasonic is an OEM for other manufacturers, I believe their own products represent the best they can do. As above, I don't think this level of performance is strictly necessary, but if you're willing to pay for it, you could hardly pick a better PSU. Just run your system by PCPartpicker's excellent power calculator before settling on a wattage.

109 people found this helpful

Helpful

Shawn

Looks to be a quality product!

Reviewed in the United States on May 15, 2024

Style: FV3-10 YEAR WARRANTYSize: 1000 WattsVerified Purchase

Impressed by the quality of the cables during install. Also came with plenty of extra’s if needed. Runs silent and without issues so far! This is my first go at this brand and i’m hoping it will be a good one!

Helpful

Barry Brooks

easy 5 star

Reviewed in the United States on June 13, 2024

Style: FV3-10 YEAR WARRANTYSize: 1000 WattsVerified Purchase

this unit is excellent. great price for the quality you are getting. no issues setting up and cables are very high quality which is a plus. easy to register for the warranty.

Helpful

CHANHO

Even though I ordered it from Korea, delivery is fast and it works flawlessly.

Reviewed in the United States on May 12, 2024

Style: FV3-10 YEAR WARRANTYSize: 1000 WattsVerified Purchase

Thank you for the fast delivery. Because it is free-voltage, you can use it by purchasing a separate power cord in Korea. It was easy to assemble because it included a new standard cable that can be used with the graphics card.

Helpful

Philip

Great High Quality ATX 3.0 PSU

Reviewed in the United States on April 22, 2024

Style: VPX-12 YEAR WARRANTYSize: 1200 WattsVerified Purchase

The Seasonic Vertex PX 1200 is a great high quality power supply that offers great power efficiency for a great price. Its standard size also makes it easy to fit into almost any build. The cables are individually sleeved giving them an almost braided feel because this power supply is a native ATX 3.0 PSU if offers a direct 12VHPWR connector for out of box support of the 30/40 Series Nvidia GPUs.

My only real gripe with the PSU is those individually sleeved cables I mentioned earlier yeah they’re very long, honestly longer than they need to be and that makes them a blessing and a curse if you’re working with a large case you’ll have ample cable for you’re build to ensure everything is powered without putting strain on the connectors. If you’re in a more mid-sized or small form factor build you’ll want to pull your hair out from having to manage these cables. You can see in my own build which is in the NZXT H9 which is by no means a tiny case I tried and did okay but towards the bottom I just had to give up.

Overall great high quality PSU and because of Seasonic’s rock solid reputation and stellar quality they will always be my go to for power supplies.

UPDATE: had to exchange for the same model because mine had nasty coil whine under load sounded like a pack of bees were inside my PC. I’m not going to knock any stars off the review because coil whine is pretty much unavoidable most PSUs will exhibit some form of it it’s just a matter of how noticeable it’ll be. Even my new one still has very faint coil whine it’s just I have to have my ear directly up to the PSU under load to hear it.

Helpful

Wyatt

Great PSU, never had to think about it once since installing it

Reviewed in the United States on April 17, 2024

Style: FV3-10 YEAR WARRANTYSize: 850 WattsVerified Purchase

I bought this to replace an MSI MAG 850GL, which was an incredibly noisy PSU without any real semblance of a fan curve. This PSU, however, is perfect. Even on the standard fan mode (as opposed to the semi-fanless hybrid mode), it makes no discernible noise when the rest of my PC's fans are turned completely off. It looks great, the build quality is solid, the cables are a much higher quality than what comes standard with most other power supplies, and it's got a solid warranty as additional reassurance.

Helpful

Top reviews from other countries

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Amazon Customer

Great value Great product

Reviewed in Canada on April 25, 2024

Style: VPX-12 YEAR WARRANTYSize: 1000 WattsVerified Purchase

Does not run hot and on the oscilloscope the signal is almost perfect and the life blood of my gaming setup

Juan Lopez

Una psu genial para el precio

Reviewed in Mexico on January 24, 2024

Style: FV2-10 YEAR WARRANTYSize: 850 WattsVerified Purchase

Facil de instalar, muy buena calidad y te aseguran 10 años de garantia, ademas no hace nada de ruido, mis ventiladores del pc hacen mucho mas ruido.

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Amazon Kunde

Seasonic Focus 1000W Einfach und Gut.

Reviewed in Germany on May 28, 2024

Style: FV3-10 YEAR WARRANTYSize: 1000 WattsVerified Purchase

Habe es nach erhalt sofort eingebaut und es funktioniert sehr gut.
Kabel sind lang genug für mein Fractal Design Define R5 (Miditower)
Ich habe ein ca. 8 Jahre altes System deshalb habe ich gleich ein Netzteil mit 1000W gekauft für spätere Hardwarenachrüstung.
Hofe es hält auch so lange wie mein 8 Jahre altes Netzteil von Be Quiet Dark Pro 11 550W das defekt wurde.
10 Jahre Garantie hat es ja.

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Alessandro

Top

Reviewed in Italy on May 17, 2024

Style: VPX-12 YEAR WARRANTYSize: 1200 WattsVerified Purchase

Tutto perfetto, qualità ottima

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OlivierC

Top performante et silencieuse

Reviewed in France on May 17, 2024

Style: VPX-12 YEAR WARRANTYSize: 1200 WattsVerified Purchase

Alimentation au top : très performante et silencieuse.
J'ai une machine assez chargée avec une RTX4080 (cable spécifique 12v fourni) , AIO et de nombreux disques.
Attention à mettre le bouton poussoir sur l'alimentation dans la bonne position si vous ne souhaitez pas du tout entendre l'alimentation.
Reste cher mais la modularité et la qualité ont un prix.

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3 Year Office Equipment Protection Plan

4 Year Office Equipment Protection Plan

Asurion Complete Protect: One plan covers all eligible past and future purchases on Amazon

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Seasonic Vertex GX-850 | 850W | 80+ Gold | ATX 3.0 & PCIe 5.0 Ready | Full-Modular | ATX Form Factor | Low Noise | Premium Japanese Capacitor | Nvidia RTX 30/40 Super & AMD GPU Compatible

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3 Year Office Equipment Protection Plan

4 Year Office Equipment Protection Plan

Asurion Complete Protect: One plan covers all eligible past and future purchases on Amazon

Seasonic Vertex GX-850 | 850W | 80+ Gold | ATX 3.0 & PCIe 5.0 Ready | Full-Modular | ATX Form Factor | Low Noise | Premium Japanese Capacitor | Nvidia RTX 30/40 Super & AMD GPU Compatible

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