Segotep GM850 White Power Supply 850W, PCIe 5.1 & ATX 3.1 Full Modular 80 Plus Gold PSU for NVIDIA RTX 40/50 Series and AMD Graphics Cards, Japanese 105°C Capacitor
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AI Verdict
An 850W ATX 3.1, PCIe 5.1, 80 Plus Gold fully modular PSU for modern NVIDIA RTX 40/50 and AMD graphics cards.
This 850W ATX 3.1, PCIe 5.1 PSU is a strong contender for modern gaming builds needing specific power delivery for current-gen GPUs. Its fully modular design and native 12VHPWR cable are key advantages for clean builds. However, the reported noise issues and shorter warranty period make it a situational choice rather than a universal recommendation.
If long-term silence and maximum warranty coverage are critical, look for PSUs with a 10-year warranty and a focus on low-noise fan designs.
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Pros
- Supports up to 200% total power excursion and 300% GPU power excursion for ATX 3.1 and PCIe 5.1 compatibility.
- 80 Plus Gold certification indicates higher efficiency and lower energy consumption.
- Fully modular design with flat white cables allows for improved airflow and streamlined cable management.
- Includes a native 12VHPWR cable capable of delivering up to 600W to PCIe 5.1 graphics cards.
- Features a DC-DC structure, Full Bridge LLC resonance assist, and 12V synchronous rectification for stable +12V output.
Cons
- The warranty period is 5 years, which is shorter than some competitors offering longer coverage.
- Some users report the PSU developing a constant ticking noise after approximately two years of use.
- CPU power cables may be too short for larger PC cases, complicating cable routing.
- Cables are not sleeved, which some users prefer for durability and aesthetics over flat cables.
Dimension Scores
The 80 Plus Gold certification and ATX 3.1/PCIe 5.1 compliance with 200% total and 300% GPU power excursion support indicate strong output capabilities.
While initially quiet, some users report a constant ticking noise developing after approximately two years of use.
It uses Japanese 105°C capacitors and features a DC-DC structure with Full Bridge LLC resonance assist, but some users reported units failing within 6 months.
The fully modular design with flat white cables significantly aids in cable management, though CPU cable length can be an issue in larger cases.
Best For
- Building a new PC with NVIDIA RTX 40/50 series or AMD graphics cards requiring PCIe 5.1 and ATX 3.1 power delivery.
- Upgrading an existing system to support high-power draw GPUs with a native 12VHPWR connector.
- PC builds where a white aesthetic and fully modular cabling are desired for a clean look.
Not Recommended For
- Users prioritizing a whisper-quiet PC build, due to reported noise issues after extended use.
- Budget-conscious builders seeking the absolute lowest price point, as other options may exist with similar features.
- Users with very large cases who require extra-long CPU power cables for optimal routing.
Watch Out For
- A few users reported their units failing within 6 months, raising concerns about long-term reliability for some.
- The CPU power cable can be too short for larger cases, leading to awkward cable management.
- The PCIe cables, if looped together, can be a hassle to manage, especially if only one is needed for a GPU.
- Some users question if the 80 Plus Gold certification truly delivers on efficiency under load.
Full Specifications
| ASIN | B09TR6ZRWP |
| Brand | Segotep |
| Wattage | 850 watts |
| Form Factor | ATX |
| Item Weight | 6.23 pounds |
| Manufacturer | Segotep |
| Connector Type | ATX 3.1, PCI Express 5.1 |
| Cooling Method | Air |
| Output Wattage | 850 Watts |
| Compatible Devices | Gaming Console |
| Product Dimensions | 5.91 x 5.51 x 3.35 inches |
| Power Supply Design | Full Modular |
| Item dimensions L x W x H | 5.91 x 5.51 x 3.35 inches |
What Buyers Say
Many users initially find this 850W PSU to be quiet and appreciate its fully modular white cables for clean builds. However, a recurring issue is a ticking noise that can develop after about two years of operation, which is a significant concern for long-term use. Some builders also noted that the CPU power cable might be too short for larger cases, making routing difficult. The brand's recognition is not as high as established competitors, leading some to question its long-term reliability despite the 80 Plus Gold rating.
“Man, this thing was quiet at first, but after like two years, it started ticking constantly, and now it's driving me nuts. I just wanted a white PSU for my build, but this noise is a dealbreaker.”
Common Praise
- Provides stable power to high-end GPUs like the RTX 3080.
- Fully modular design with flat white cables makes for a clean build aesthetic.
- Works as advertised for powering a PC.
- Compatible with ATX 3.1 and PCIe 5.1 standards, ready for current-gen graphics cards.
Common Complaints
- Develops a constant ticking noise after about two years of use.
- CPU power cable can be too short for larger cases.
- Cables are not sleeved, which some users prefer for durability.
- Warranty period of 5 years is shorter than some competitors.
- Brand recognition is lower compared to more established PSU manufacturers.
Ownership Tips
- The ticking noise often appears after 1.5-2 years of consistent use, not immediately out of the box.
- The flat white cables, while aesthetically pleasing, can be stiff and challenging to bend in tight spaces.
- The native 12VHPWR cable is a convenience, but its stiffness can also impact routing.
- Monitoring the PSU's noise levels over time is crucial, as initial quietness doesn't guarantee long-term silence.
Frequently Asked Questions
Is this PSU compatible with NVIDIA RTX 40 series graphics cards?
Yes, it is designed with PCIe 5.1 and ATX 3.1 readiness, including a native 12VHPWR cable that can deliver up to 600W, making it compatible with RTX 40 series cards.
Are the cables included with this power supply white?
Yes, this fully modular PSU comes with flat white cables, which can contribute to a cleaner aesthetic in white-themed PC builds.
What does '80 Plus Gold Certified' mean?
The 80 Plus Gold certification indicates that the power supply operates at a minimum of 87% efficiency at 20% load, 90% at 50% load, and 87% at 100% load, leading to lower energy consumption and less heat generation.
Does this PSU have a silent fan mode?
While the product description doesn't explicitly state a 'silent fan mode,' some users initially report it as quiet. However, there are reports of ticking noises developing over time.
What is the warranty period for this power supply?
The warranty period for the Segotep GM850 is 5 years.
Buying Guide
When you're picking a power supply, you're essentially choosing the heart of your PC. It needs to provide enough wattage for all your components, especially your graphics card, without breaking a sweat. You also want it to be efficient, so it doesn't waste electricity as heat, and ideally, quiet. The modularity of the cables affects how clean your build looks and how easy it is to manage wires inside your case.
Wattage (850W)
This is the total power your PSU can deliver. Think of it like the engine size in a car; too small, and your PC won't run properly, especially under heavy load like gaming. 850W is suitable for most high-end single GPU setups.
80 Plus Gold Certified
This certification tells you how efficient the PSU is at converting wall power into usable PC power. Gold means it's pretty efficient, wasting less energy as heat and potentially saving you a bit on your electricity bill compared to lower ratings like Bronze or White.
ATX 3.1 & PCIe 5.1
These are the latest standards for power supplies, crucial for modern, power-hungry graphics cards like the NVIDIA RTX 40 series. They ensure the PSU can handle sudden power spikes (excursions) from these GPUs without shutting down your system, like a robust electrical system in a house.
Fully Modular
This means you only plug in the cables you actually need. It's like having a custom-built wiring harness for your car instead of a tangled mess. This makes your PC build much cleaner, improves airflow, and simplifies cable management.
Alternatives
If this PSU doesn't fit, search for 850W or higher ATX 3.1, PCIe 5.1 PSUs with a longer warranty period and specific low-noise fan technology for quieter operation.
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