difficult hardware decision

[PrimordialSoup]

Hi,

I am having trouble deciding between 2 cpu for a folding rig. I am looking to populate a 2s board with either the e5-2660 v3 or e5-2670 v3. Where I live the price difference is negligible, electricity is cheap so it all comes down to workload performance on the cpu(more cores & lower clock or less cores & higher clock). The 2660 is a 10c/20t @ 2.6ghz and the 2670 is 12c/24t @ 2.3ghz. I want to run the a5 core and leave 4 available threads for other computing tasks.

Thanks in advance.

[jrweiss]

I think that at this level of discussion, the F@H work done can be compared relatively simply by cores x clock or threads x clock. I think that in this range the scaling will be approximately linear within our ability to predict.

So after saving 2 cores or 4 threads for other work, you have 8x2.6=20.8 for the 2660 or 10x2.3=23.0 for the 2670. Therefore I think the 2670 will be more productive for FAH, but the 2660 will be more productive for your remaining work.

[7im]

Agreed. FPU count x clock speed, when comparing similar hardware.

And unless the PC is used for something really CPU intensive, I rarely find the need to reserve any threads, and use them all on FAH. YMMV.

[Leonardo]

Why don't you build a GPU rig? Currently, GPUs are typically much more productive.

[DarthBaggins]

So far the 980's/970's/960's are great point producers from my experience especially with BigAdv out of the picture