SMP on my FX60 turns in slightly more points than the standard exe client. SMP=847-1141ppd compared to 644ppd ( I only ever got 905 point units and 322ppd each, no overclock) on the standard run on both cores.
I run everything as a service.. If you want to run SMP you'll need the client and then the drop in replacement too to replace the executable. Both available st the link below. Only the mpich version works on 64 bit OS, deino only works on 32 bit. I always had trouble with the deino version anyway.
http://folding.stanford.edu/English/DownloadWinOther
You must have netframework v2 and a passworded account to run on. Just follow the guide...
http://folding.stanford.edu/English/WinSMPGuideMPICH
I think if you disable the affinity lock it tries to run one smp client on each core rather than one on all four cores, so don't do it. lol.
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1100t on M5A99x-EVO with 2x4gb and 6870 running Win7 on Force120 ssd in Corsair 600t cooled by H100. Folding for team 34106