Segotep GM850 Power Supply 850W, PCIe 5.1 & ATX 3.1 Full Modular 80 Plus Gold Certified Gaming PSU for NVIDIA RTX 20/30/40 Series and AMD Graphics Cards
Condition: New
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Availability:
Only 5 left in stock, order soon!
Arrives
Tuesday, Jun 9
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Size: 850W
Features
- ATX 3.1 & PCIe 5.1 Ready: The PSU can hold up to 200% total power excursion & 300% GPU power excursion
- 80 Plus Gold Certified: The 80 PLUS Gold certification promises higher efficiency & lower energy consumption
- Fully Modular: Full module with flat white cables, improve airflow & strengthen cable management
- Native 12VHPWR Cable: It can generate up to 600W of power to PCIe 5.1 graphics cards
- Stable +12V Output: DC-DC structure, Full Bridge LLC resonance assist, 12V synchronous rectification provide stable & safe output
Model Name: gm850
Brand: Segotep
Compatible Devices: Personal Computer
Connector Type: ATX 3.1, PCI Express 5.1
Output Wattage: 850
Form Factor: ATX 3.0
Wattage: 850 watts
Cooling Method: Air
Item dimensions L x W x H: 5.91 x 5.51 x 3.35 inches
Item Weight: 5.29 Pounds
Compatible Devices: Personal Computer
Connector Type Used on Cable: ATX 3.1, PCI Express 5.1
Output Wattage: 850
Form Factor: ATX 3.0
Wattage: 850 watts
Cooling Method: Air
Power Supply Design: Full Modular
Number of Fans: 1
Fan Size: 140 Millimeters
Maximum Input Voltage: 240 Volts (AC)
Minimum Input Voltage: 115 Volts (AC)
System Bus Connector Type: ATX
Item Dimensions: 5.91 x 5.51 x 3.35 inches
Item Weight: 5.29 Pounds
Model Name: gm850
Brand: Segotep
Manufacturer: Segotep
UPC: 609015786574
Mfr Part Number: 850W
Model Number: 850W
Warranty Description: 5 years
Unit Count: 1.0 Count
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Tuesday, Jun 9
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Upgraded pc from 2070super with a 600watt psu and was getting a 5070 . Needed a psu with 12vhpwr native connectors and this had it . Very happy with my purchase . Now I’m running the 5070 and ryzen 5 7600x and both with a slight OC . No issues yet , about 2 months in . No fan noise . Very high quality cables . Everything connected properly and it has up to date features . Looks good too .
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Reviewed in the United States on March 13, 2026 by Mike
Extremely high quality, I’ve used this brand for different builds 650-1000w psus and has never let me down perfect for any newer 40/50 series card.
Reviewed in the United States on April 2, 2026 Reviewed in the United States on April 2, 2026 by Caleb skipper
My computer was shutting down randomly a few months after buying a new graphics card. The PSU was 11 yrs old, so although it was 650w and the minimum suggestion from AMD, I didn't feel it was quite right. I also needed extension/splitter cables to fit the plugs on the new graphics card since the old PSU didn't have 16 pins cords... not a good look. This came with more plugs than I needed (hallelujah for modular designs), and fit my 6700XT perfectly. I used both of the 8pin cables and plugged them both into the 2 PCIE slots on the PSU, instead of using just one wire with the additional 8-pin attachment. (see attached). After giving up on my defective RAM sticks (again), I've since had no BSOD error, or random system crashes / freezes that lose all my hard work throughout the day. The crashes I faced before were almost certainly the fault of my old, failing / struggling PSU, but if I run into them again I'll update this review. Even if I face those issues again, it wouldn't be the fault of this product, but I did want to make note of it because system crashes can be linked to failing PSU's and people need to be assured of that when considering applicable remedies; for me this was a purchase out of necessity, not comfort / preference. The PSU itself is also ultra quiet. For the first couple days, I smelled a factory-like scent. It was a little strong, but it has been a few days now and has gone away. I always thought my graphics card / HDD was making noise--it turns out it was my old PSU, because now I hear ALMOST NOTHING from my tower, and certainly nothing from the PSU. This is a great, great buy.
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Reviewed in the United States on August 24, 2023 Reviewed in the United States on August 24, 2023 by Angel
I'm sorry to say ... it died last night. I walked out of my computer room to go to kitchen, and I get back to sit down in front of PC and it is shutting down. I wiggle the mouse ... I poked the space bar on keyboard and nothing My PC shutdown and it won't come back on. It was a hassle and it took awhile but I connected it to my MSI pc and nothing happened. I'm hoping the ASUS Prime X570-P mobo with a Ryzen 9 5900x cpu are okay. I do have my laptop to play with & I have a MSI mobo / 6-core AMD chip in it. Runs at 3.1 ghz. It won't play modern games but it will have to do. It makes a good spare PC. This power supply was good for awhile.
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Reviewed in the United States on June 8, 2023 by Gary Hill
Excelente producto recomendado
Reviewed in the United States on May 21, 2026 by José Alvarez
I've purchased 3 of these. Two for myself, and one for a friends PC and 2 of 3 have failed in similar ways. The PCI-E port next to/linked to the 600W plug failed after less than 8 months. In both cases the video card(s) were plugged into the PCI-E plug next to the 600W plug and after allowing the PC to sit at idle/in sleep mode for multiple weeks, the PCI-E and 600W plug no longer provides power. These were NOT under heavy load, and they failed with two different video cards plugged in (7900XT and Intel B570). It seems to be a persistent issue with drawing "low power" over a longer period of time. I will attempt to process the warranty, but I'd stay away from this one. as it's not something that's easy to diagnose. The third one of these that I own, hasn't failed, but the PC has barely been in use (used only a few times). There are also no indicators of failure, not a heat problems, doesn't smoke, doesn't spark, it just goes from working, to not working. Moving the PCI-E cable for the video card to another PCI-E port allowed the video card to work again, I have no idea how long it will last, but the plug linked to the 600W port failed, along with the 600W port, even though the 600W connector was not in use in either case. These are likely isolated on their own rail, and if one port fails, both connectors are useless. BUYER BEWARE. Its extremely unlikely that one purchaser would get the SAME failure and it's not a systemic design and/or component selection problem, which means a lot, or even all of these, have the same problem.
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Reviewed in the United States on January 2, 2026 by ABC
I've had this PSU installed in my system with a 4070 and 12700k for about a year, and it does its job just fine. However, over the past 6 ish months there is a fairly noticeable humming coming from the unit if you're in a quiet room. I thought it may have been the case fans but I tested it and turned all of the other fans in the computer off and the PSU was where the noise was coming from. It isn't obnoxiously loud but it is annoying hearing that slight hum coming from what should be a silent or near silent build at idle, because of this. It still works just fine and as far as I remember the fan hum developed over time. When I bought it this was the most affordable modular PSU for what I needed, with others costing a minimum of $50+ more, however now it looks like the market is a bit more competitive. If you're on a budget but want a power-efficient modular PSU, sure, why not, get this one. If you have the $30 extra, go Corsair or some other brand.
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Reviewed in the United States on December 8, 2023 by Jayden
Giving the machine all the power it needs 💪 🙌
Reviewed in the United States on May 8, 2026 by G. Brissitt