Thermaltake Toughpower Grand 1050W PSU
Author: Shawn Knight
Editor: Zahn Funk
Date: 06-05-2011
Provided by: Thermaltake

I will be installing the Grand 1050W in the following system:

Intel Core i5-2500K Sandy Bridge
Corsair Hydro H70 Liquid CPU Cooler
Corsair 2x 2GB XMS3 DDR3
MSI R6850 Power Edition
OCZ Agility 3 240GB SSD
Corsair Obsidian 650D Chassis
Optical drive
Windows 7 Home Premium 64-bit

I had no problem installing this power supply in the Corsair Obsidian 650D chassis. I was able to route all of the cables behind the motherboard and still had enough length on the 8-pin cable to reach its target at the top of the board. As you can see, the Obsidian 650D cleans up very nicely when combined with a modular power supply. As I mentioned earlier, having two 8-pin CPU cables hardwired seems a bit overkill and I simply tucked the spare away behind the board in the back of the case.

Using a Kill-a-Watt meter, I measured the power usage of the system at the outlet, during both idle and load. To generate the load I used OCCT's power supply test utility, which stresses both the CPU and GPU up to 100%. I also ran Prime 95 for good measure. Additionally I disabled all power saving features in the BIOS. At idle, only 104 watts is being used. A full system load only generates a draw of 325 watts, barely 30% of what this PSU is capable of.

I think a lot of people tend to overestimate just how much power a typical high-end system draws. This is a respectable system with a nice midrange graphics card that only draws just over 300 watts of power. As such, it really only makes sense to own a high wattage power supply like this if you have some serious hardware under the hood like multiple high-end video cards and / or a power sucking Socket 1366 CPU.

With a digital multimeter, I also took voltage readings at the back of various connectors under idle and load conditions. The +5V rail was the most stable since it didn't move going from idle to load. The +3.3V rail was also very stable. I measured the +12V rail at both the 6-pin PCI-E connector and the 24-pin ATX connector. Only the 6-pin connector fluctuated any which is what I used in the results above.

Unfortunately these are the only tests we are capable of conducting at this time. We do not have access to expensive power supply testing equipment nor would we expect most of our readers to understand the detailed findings that such equipment outputs. If you are an electrical engineer or a hardcore PSU enthusiast, I would suggest you check out some other more detailed reviews on this unit or any other before making a purchasing decision.

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