Running overclocked Xeon X5675 on legacy server boards with proper cooling and power management.
Running overclocked Xeon X5675 on legacy server boards with proper cooling and power management.
Among roughly 700 entries at HWBot, at least 80% involve the 1kw PSU. It’s a model from over a decade ago, currently used in my daily driving setup—it wasn’t considered during initial assembly. After the LN2 cooling, it handled multiple processors from 1.7V up to over 2.0V, including a Fermi at 1.15V or better, and my GTX 480 which is fully modded for power. I’ve only tested it in water. Edit: The 480 I mentioned is the one from December.
Thanks everyone for the responses, you've been really helpful. I think I'm not going to overclock for now, and drive them from that 750W PSU I mentioned above, that's a decent amount of power anyway. I will check the power consumption and see though, maybe maybe there's room to bump them up a little bit.
Using two CPUs at 4000-4200 with 750V should work fine if the GPU stays on. Observe the rails to assess performance. It's not only about the 12V supply; the 5V and 3.3V lines are crucial too. In reality, those are the rails that tend to weaken first before the main 12V is removed. Pay attention to your setup, aim for a stable output, and don't rush until you're confident. Just trying to prevent any frustration. It seems like a couple of connections behind the return line.