Hello everyone,
I’m looking to upgrade my current setup with a 7900XTX and the manufacturer website recommends 850W at a minimum.
As the title says, I currently only possess a 750W PSU (Corsair RM750x (2021)).
Rest of the system (the parts that draw power at least):
Mainboard: Asus TUF GAMING X570-PLUS
CPU: AMD Ryzen 9 3900X
RAM: 4x8GB DDR4
Storage: 1x Samsung 990 Pro 2 TB, 1x Samsung 970 Evo 500 GB, 2x older Samsung SATA SSDs
Fans: 3x Case fans, 1x Noctua CPU cooler (forgot the exact name)
PSU: Corsair RM750x (2021)
Putting everything into PCPartpicker makes it spit out a max load of 608W, but considering that the 3900X can spike to draw up to ~145W (instead of the 105W TDP) and the 7900XTX can spike up to ~530W (instead of the 355W PCPartpicker assumes) I’d have peak loads just short of 850W…
My question now is twofold:
- How reliable is the Power Usage Limit I set in LACT enforced? If I can rely on it to keep the GPU to 355W I should (in theory) be fine, right?
- How bad is it to trigger the overdraw protection in the PSU? Obviously my PC would shut down immediately (with all that entails), but would I risk damage to components?
Thanks for any help :)
PS: I’m set on the 7900XTX, as I want the 24GB VRAM. It’s quite literally the cheapest option (new, in my region) that is also a usable gaming card.
PPS: Yes, I’m going to upgrade the PSU soon. Just not now if I can avoid it. (They aren’t exactly free…)
Yeah, I don’t know if I’d get it myself with where RAM and NVMe prices are presently. But that sort of thing is presently about the cheapest way to get a ton of memory connected to a GPU.
Yeah, I know. And prices aren’t likely gonna promptly crash to the money-losing 2024/2025 rates, either, since there’s pent-up demand. But, just saying that my guess is that there’s going to be substantial near-term depreciation on any AI hardware purchased right now.
Sure. I hope you do enjoy it if you get it (and it’s certainly been more-than fine for gaming, in my experience).