Having a clearout in work and found a few Dell Optiplex PC's with 3ghz Pentium 4 CPU's in. Thought I would see how well they would fold so I used Fred's Linux SMP client and VMware player, I had to drop the VM to use 1 CPU and memory to 376mb as the machine only has 512mb to begin with but it booted ok and after an hour of it sat at 100% going up 2% and producing some SERIOUS heat it came back with 126 PPD!!! Yes that was 126 PPD - I didn't leave a number off lol Is that right do you think? its a Northwood D1 revision CPU (non-hyperthreaded) Dont think im going to run them some how unless I can get half decent PPD out of them, anything im missing here?
My working assumption was that core2 at 3ghz is almost twice as a P4 at 3ghz. Depending on the application. What memory is it using? Ive also been told that folding likes memory bandwith. But im a novice at folding so dont quote me.
Sounds right, SMP on 1 CPU shouldn't work though? P4's are only good for the standard client or as mules for GPU's
I had a P4 660, and it used to produce an average 510 PPD - though on some WU's it only produced 90 PPD!!
As I understand it, they decide the credit for CPU work units by running them on a P4 @ 2.8GHz and multiplying the number of days taken by 220 i.e. a P4 @ 2.8 GHz earns 220ppd across all WU. I'm not sure if they normalise the SMP client WUs in the same way (I would guess they don't) but as a rough guide, that's what you can expect from older CPUs.
my athlon xp2600+ produces more than that! What memory does it have? ddr2 533? Also it may give a rubbish ppd figure at first, but once it completes a wu, it should go up. It's not worth using smp client because it will never finish the wu before the deadline.
Ah well after some of the things you all said then it must be about right so im not going to bother wasting the electricity on running them for such little PPD. Makes me laugh about how crap the PPD is yet the heat being pumped out is just silly!
Done another test today - I decommissioned an old IBM server which has dual P4 Xeon CPU's, they are 2.4ghz each with hyperthreading so 4 x cpus appear in task manager. Stuck a fresh copy of 2003 server on and the SMP client and can anyone guess its PPD? Will spill the beans tomorrow...
The server both CPU's / hyperthreading at 100% load produce a whopping.... 370 PPD!!!!!!!!!!! Shocking lol
I know every point counts, but I decided a long time ago that my single core A64 wasnt worth running for 400PPD considering the TDP of the chip and the amount of electricity that it was costing to run that rig! Inefficient little bugger of a CPU
