Quite a bit better then the 2500k (atleast from a tc standpoint) . Working on a 6098 since noon and the 3570ks been steady at 29115 ppd throughout the wu in native Ubuntu 10.10 v6. My 2500k averaged 27250 ppd on an 6098. I could probably get 30k if i push the oc up to 4.9, but its stable at 4.8 and im happy with 29k, so its staying at 4.8 for now, lol. Arvidab has been playing around with a 3570k and is getting similar results. Im curious how its gonna do on 6097s as my 2500k dropped down to 26k on those.
Im also impressed with the temps. My 2500k at 4.8 runs 70c while folding on an h80 while the 3570k is at 60c on an h100