(Tested) Thermaltake Toughpower Grand 850W PSU Review



Thermaltake Toughpower Grand 850W PSU Review




Thermaltake Toughpower Grand 850W review index


1 – Toughpower Grand 850W: Presentation

Thermaltake logo

The PSU (or Power Supply Unit) is a key element when you want to build a stable and robust system. Especially if you run several high-end graphics cards under GPU-intensive applications. An under sized PSU can lead to system reboot if the power required by the graphics cards is too high. That’s why, a high quality PSU is very important.

In this review, I will stress Thermaltake’s PSU to the max to see if we can rely on this product to build a robust PC.



The Toughpower Grand 850W is one of the five models of Thoughpower Grand, Thermaltake’s new line of PSUs. Toughpower Grand line includes four other models: 650W, 750W, 1050W and 1200W.

Thermaltake Toughpower Grand 850W PSU Review




Toughpower Grand line of PSUs targets enthusiasts who want to build extreme gaming PCs with the highest quality PSUs.

The Grand 850W is a 850W PSU, that is able to deliver a continuous power of 850W. The PSU features one but robust 12V rail with a maximum output current of 71A (71A x 12V = 852W).

Thermaltake Toughpower Grand 850W PSU Review



Toughpower Grand 850W comes with a semi-modular cabling system:

Thermaltake Toughpower Grand 850W PSU Review




The modular panel has four 6-pin connectors for devices such as HDD / DVD player and supports up to six PCI-E (6+2pin) allowing to build 3-way SLI/CrossFire systems!

But not all cables are modular. The PSU has 3 hardwired cables:
- two EPS (4+4pin and 8-pin)
- one main power connector (24-pin)

The PSU is cooled by a 14cm fan that operates at a very low noise level. Thermaltake has added a new feature called FanDelayCool: the fan continues to operate 15-30 seconds after system shutdown to ensure that all components are properly cooled.



Thermaltake Toughpower Grand 850W review index


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