I cranked up the AC in the office and put a fan under the desk.
Yes, it's crunching quite well.
It's actually two boxes, one Dell T-5500 and a Dell T-3500.
I've turned the other boxes off, they are just so slow by comparison it's just not worth the added heat.
If Seti were giving out WU I'd have a better idea of how well they are crunching.
But I'm running through a lot of Rosetta and Milky Way WU so that's good.