Real World Test System & Observations
First up, we pushed the 2990WX 32-core CPU with a manual overclock to pull more amperage intentionally. Our default single GPU installation is the TITAN V, which by its right, can pull a decent amount of power on its own. We observed wattages between 640 - 690 Watts during this run, and it held rock stable during several hours of testing. Much to my surprise, the C850 reached an excellent 34C top-end temp with occasional blips to 35C.
This is quite good, but the fan was more audible than others I have tested, which is likely caused by a more aggressive fan ramp up, so it's a trade-off between noise and thermals. Overall, when in a chassis, I don't think it would be louder than a similar liquid cooling setup to what we are running if you had this sort of 24/7 loading.
Adding a 1080 Ti to the mix, and we were able to push north of 1000W. Now the fan has really ramped, and temps are higher than I would want to see in everyday use, but then again, we are pulling well over what I would expect anyone to put an 850W under. This is more the type of load where I would recommend a 1200W supply to be sure under full burn you are at an optimal efficiency range.
Also, do keep in mind that this is with a 32-core CPU pushed to its limit, so a mainstream rig with these two GPUs would likely pull into the 800W range, which would fit fine in the power range of this PSU as most users will not be putting the entire system under a full burn unless it's a workstation. IF it is expected to be put under a 24/7 render workload for its lifetime, I would recommend still a 1000W supply.
While I would love to push it further, I feel like adding yet another card with the thermals we see already would just be begging to trip some protections, and I think this result is well above good enough to prove that the C850 can hold its own.
- Page 1 [Introduction, Specifications, and Pricing]
- Page 2 [Packaging]
- Page 3 [Hardware & Documentation]
- Page 4 [NZXT C850 Gold Power Supply]
- Page 5 [Real World Test System & Observations]
- Page 6 [Final Thoughts]