Thermaltake Toughpower GT 850W ATX 3.1 Standard Power Supply; 80 Plus Gold Efficiency; Smart Zero Fan; Native 450W PCIe 5.1 Connector; PS-TPT-0850FNFAGU-3; 5 Year Warranty
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AI Verdict
This 850W ATX 3.1, 80 Plus Gold, fully modular power supply with a native 450W PCIe 5.1 connector is for new builds needing modern GPU support.
This power supply is a strong fit for modern PC builders due to its ATX 3.1 and native PCIe 5.1 support, essential for current-generation GPUs. The 850W output and 80 Plus Gold efficiency align well with the demands of high-performance gaming and workstation systems. Its fully modular design simplifies the build process.
If you're running multiple high-power GPUs or plan extreme overclocking, consider a higher wattage PSU (1000W+) with Platinum or Titanium efficiency for more headroom and better performance under sustained heavy loads.
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Pros
- Native PCIe 12V-2x6 connector delivers up to 450W for PCIe 5.1 graphics cards.
- Fully compatible with ATX 3.1 specifications, supporting up to 200% power excursion.
- Achieves up to 90% efficiency with 80 PLUS Gold certification, reducing energy waste.
- Smart Zero Fan technology minimizes noise by adjusting the 120mm hydraulic bearing fan speed based on load.
- Fully modular design with low-profile flat black cables simplifies cable management.
- High Amperage Single +12V Rail provides stable power for high-end gaming and workstation builds.
Cons
- Some users report the 12V-2x6 cable is labeled for 600W, conflicting with the 450W stated for the 850W model.
- Efficiency may drop significantly under heavy loads, according to some user reports.
- Smart Zero Fan sometimes fails to activate when it should, potentially leading to higher temperatures.
- Low-profile cables are reported to be stiff, making routing challenging in some cases.
- Safety protections can be overly sensitive, triggering shutdowns from minor power fluctuations.
Dimension Scores
Provides 850 watts with 80 PLUS Gold efficiency (up to 90%) and ATX 3.1 compliance, supporting 200% power excursions.
Features Smart Zero Fan technology with a 120mm hydraulic bearing fan, designed to minimize noise during low-load operations.
Includes industrial-grade protections (OCP, OVP, UVP, OPP, SCP, OTP) and a 5-year warranty, but some users report inconsistent power delivery and undisclosed component variations.
Fully modular design with low-profile flat black cables simplifies routing, though some users find the cables stiff.
Best For
- New PC builds featuring PCIe 5.1 GPUs that require a native 12V-2x6 connector.
- Users prioritizing energy efficiency with 80 Plus Gold certification.
- Quiet PC builds where fan noise reduction during low loads is important.
- Systems needing clean cable management due to its fully modular design.
Not Recommended For
- Budget-constrained builds where ATX 3.1 and PCIe 5.1 are not immediate requirements.
- Users who frequently push their systems to maximum load and require consistent peak efficiency.
- Compact PC cases where the unit's heavier weight and stiff cables could complicate installation.
Watch Out For
- The 12V-2x6 cable's advertised 600W rating on some versions contradicts the 450W specified for the 850W model, causing confusion.
- Thermaltake offers two undisclosed internal versions (A and B) of this PSU, leading to component transparency issues.
- Some users experienced the Smart Zero Fan not engaging, potentially causing overheating.
- Warranty claims have been met with reports of long wait times and unhelpful customer service, with some receiving cheaper replacement models.
- The low-profile flat cables are stiff, which can make routing difficult in tight spaces.
Full Specifications
| ASIN | B0DJ6DGHCP |
| Brand | Thermaltake |
| Color | Black |
| Series | Toughpoewr GT 850 |
| Voltage | 120 Volts |
| Wattage | 850 watts |
| Model Name | Toughpoewr GT 850 |
| Form Factor | ATX |
| Item Weight | 5.35 pounds |
| Manufacturer | Thermaltake |
| Connector Type | ATX, Molex, PCI Express, SATA |
| Cooling Method | Air |
| Output Wattage | 850 Watts |
| Item model number | PS-TPT-0850FNFAGU-3 |
| Compatible Devices | PC |
| Product Dimensions | 5.9 x 3.4 x 5.5 inches |
| Power Supply Design | Full Modular |
| Item Dimensions LxWxH | 5.9 x 3.4 x 5.5 inches |
| Item dimensions L x W x H | 5.9 x 3.4 x 5.5 inches |
What Buyers Say
A recurring concern among buyers is the discrepancy in the PCIe 12V-2x6 cable's wattage rating, with some cables labeled 600W while the product specifies 450W for this 850W model. There are also reports of Thermaltake using two different internal versions of the PSU without clear disclosure, which is a transparency issue. While the Smart Zero Fan is intended for quiet operation, some users have noted it occasionally fails to engage, potentially impacting cooling. The low-profile cables, while aiding in organization, are often described as stiff, making them tricky to bend and route in smaller cases.
“Man, this PSU is mostly fine, but I'm kinda annoyed about the 450W vs 600W thing on the GPU cable, like, which is it?! And those cables are a pain to bend, my fingers hurt trying to get them neat.”
Common Praise
- Native PCIe 12V-2x6 connector works as expected for modern GPUs.
- Fully modular design makes building and cable routing much cleaner.
- Quiet operation during low power draw thanks to the Smart Zero Fan.
- ATX 3.1 compatibility provides future-proofing for system upgrades.
- The 80 Plus Gold efficiency helps keep power consumption down.
Common Complaints
- Confusion over the 12V-2x6 cable's actual wattage rating (450W vs. 600W label).
- Smart Zero Fan sometimes doesn't kick in, leading to concerns about heat.
- Cables are stiff and hard to manage, despite being low-profile.
- Reports of overly sensitive safety protections causing unexpected shutdowns.
- Concerns about warranty service and receiving different versions of the PSU.
Ownership Tips
- The 12V-2x6 cable, despite being native, can be quite rigid and difficult to route cleanly, especially in smaller cases.
- The Smart Zero Fan feature works most of the time, but there are instances where the fan remains off longer than expected, causing slight worry about internal temperatures.
- The unit's weight is noticeable, making it feel substantial but also a bit cumbersome during installation in a tight chassis.
- Some users have reported a slight coil whine under specific loads, though it's not universally experienced.
- The existence of 'Version A' and 'Version B' with undisclosed internal differences is a bit unsettling for long-term component consistency.
Frequently Asked Questions
Does this PSU come with a native 12V-2x6 cable for modern GPUs?
Yes, the Thermaltake Toughpower GT 850W includes a native PCIe 12V-2x6 (12+4 pin) connector, capable of delivering up to 450W for compatible graphics cards.
What does 80 PLUS Gold Efficiency mean?
80 PLUS Gold certification indicates that the power supply operates at up to 90% efficiency under typical loads. This means less energy is wasted as heat, potentially lowering your electricity bill and reducing heat inside your PC case.
How does the Smart Zero Fan feature work?
The Smart Zero Fan technology keeps the 120mm hydraulic bearing fan off when the power supply is under low load, resulting in silent operation. The fan automatically spins up when the load increases to maintain optimal temperatures.
Are the cables fully modular?
Yes, this power supply is fully modular. This allows you to connect only the cables your system needs, improving airflow and making cable management much easier.
What is the warranty period for this power supply?
The Thermaltake Toughpower GT 850W comes with a 5-year warranty.
Buying Guide
When you're looking at a power supply, you're basically picking the heart of your PC. You need enough wattage to power all your components, especially your graphics card, but also consider efficiency to save on electricity and reduce heat. Modular cables are a huge plus for keeping your build tidy, and modern standards like ATX 3.1 and PCIe 5.1 are important if you're buying a new high-end GPU.
Wattage
This is how much 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 load. Too big, and you're just spending extra money for power you don't need.
80 PLUS Gold Efficiency
This rating tells you how much power from the wall actually reaches your components, versus how much is lost as heat. Gold means 90% efficiency at typical loads, so less wasted electricity and less heat inside your case, like having a fuel-efficient car.
ATX 3.1 & PCIe 5.1 Connector
These are the latest standards for power supplies, especially important for new, power-hungry graphics cards. The PCIe 5.1 connector (12V-2x6) is a direct, single cable connection for these GPUs, simplifying wiring and ensuring stable power delivery, like a dedicated fast lane for your graphics card.
Fully Modular
A fully modular PSU lets you detach every cable that isn't essential. This means less clutter inside your PC case, better airflow, and a much cleaner-looking build, similar to having custom-fit cables instead of a tangled mess.
Alternatives
If this PSU doesn't fit, look for a power supply with higher wattage (1000W+) and Platinum or Titanium efficiency for more demanding systems, or a non-ATX 3.1/PCIe 5.1 unit if you're on a tighter budget and not running a cutting-edge GPU.
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