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Segotep

Segotep GM850 850W Power Supply, 80 Plus Gold Certified, PCIe 5.1 & ATX 3.1

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Availability: Only 5 left in stock, order soon!
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Arrives Friday, Oct 23
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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, improves airflow & strengthens 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 provides a stable & safe output

Description

The efficiency of your power supply directly influences your system’s performance and your power consumption. The 80 PLUS Gold certification promises lower energy consumption and higher efficiency. Added 12VHPWR 16-pin interface directly provides a maximum power supply capacity of 600W for PCIe 5.1 graphics cards and expansion cards. Also compatible with 50 series graphics cards. Fully modular PSUs offer the greatest flexibility since you can remove all of the cables when they're not needed. Helpful to improve airflow or if you're tight on space inside your computer case. The peak power of PCIE 450W can reach 300% and last for 100us. When in use, it can reduce the probability of stopping work due to excessive hardware power. Hydraulic rotors are used to achieve high performance, greater stability, and less noise. The noise during operation is ≤29.97dB(A), which means you can use the computer in a quiet environment. Active PFC adapts to the global grid voltage and has complete and mature multiple protection measures. In the case of unstable voltage, there is no need to worry about burning the hardware.

Model Name: gm850


Brand: Segotep


Compatible Devices: Personal Computer


Connector Type: ATX 3.1, PCI Express 5.1


Output Wattage: 850


Form Factor: ATX


Wattage: 850 watts


Cooling Method: Air


Item dimensions L x W x H: 5.91 x 5.51 x 3.35 inches


Item Weight: 5.3 pounds


Compatible Devices: Personal Computer


Connector Type Used on Cable: ATX 3.1, PCI Express 5.1


Output Wattage: 850


Form Factor: ATX


Wattage: 850 watts


Cooling Method: Air


Power Supply Design: Full Modular


Number of Fans: 1


Fan Size: 14 centimeters


Maximum Input Voltage: 240 volts_of_alternating_current


Minimum Input Voltage: 115 volts_of_alternating_current


System Bus Connector Type: ATX


Item Dimensions: 5.91 x 5.51 x 3.35 inches


Item Weight: 5.3 pounds


Model Name: gm850


Brand: Segotep


Number of Items: 1


Unit Count: 1 Count


Manufacturer: Segotep


UPC: 609015786574


Model Number: 850W


Mfr Part Number: 850W


Warranty Description: 5 years


Item Highlight: Full Modular Gaming PSU for NVIDIA RTX 20/30/40/50 Series and AMD Graphics Cards


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Oct 23

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.

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Top Amazon Reviews

    • Almost 1 year of use.(I will update if something happens.)
So far so good, bought it on Dec 27, 2025. No problems and no noise. Got a rx 9060xt. The graphics card is rated for 150/160 wats so that’s probably why. But yeah no problems. Gives enough power and the cables are easy to install. I only had trouble with the motherboard haha, it’s just difficult to remove the cables once they are plugged in. ... show more
Reviewed in the United States on August 16, 2026 by Robert
    • Quiet but smelly?
Review Image by Angel
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. ... show more
Reviewed in the United States on August 24, 2023 by Angel
    • All you need
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 . ... show more
Reviewed in the United States on March 13, 2026 by Mike
    • Buenas fuente
Excelente
Reviewed in the United States on September 5, 2026 by Luis Camargo
    • SEGO Power
Purchased the equivalent unit back in 2021 for my last build and lasted until 2025 until encountering errors after a power outage. RMA with Segotep warranty services and they were excellent to work with and responded rapidly. They evaluated and shipped out this exact unit as a replacement in 15 days total. Only costed me shipping to them for $8. New unit is running strong and no issues. Highly Recommend. ... show more
Reviewed in the United States on March 7, 2026 by Jedi4good
    • Minor Noticeable Fan Hum
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. ... show more
Reviewed in the United States on December 8, 2023 by Jayden
    • Modern design, Gold Rated, Supports Nvidia 30X0 Gpu, Dual 8-pin CPU, Fully Modular
This is a solid PSU. The cabling density and quality is up there with Corsair. * Fully Modular * Supports up to Nvidia 30X0 GPUs (4 GPU power leads) * Support dual CPU 8-pin motherboards (2 each dedicated ports/cables) * Attractive, durable, nice finish exterior * Whisper quiet fan * Cable density is on par with much more expensive brands * Fully modular This unit did not quite work out for my specific needs, but it should more than suffice for any 8-core CPU driving any of the power hungry new AMD 6XXX or Nvidia 30X0 gpus. While there was no branding of any "Japanese" capacitors on the product packaging, or instructions, the quality of the components visible through the vent ports appeared to be very good. This is priced within just a few dollars of mainstream brands, but this brand is highly popular in Asia. An upcoming brand in the US market for sure. ... show more
Reviewed in the United States on January 31, 2021 by Mark C.
    • Do NOT buy, this has a persistent failure issue.
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. ... show more
Reviewed in the United States on January 2, 2026 by ABC

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