Folding, PPD to Watt ratio

[GlassBomb]

So I was wondering. Does anyone know where the sweet spot lies when it comes to PPD:Watt?

 

I know that multi-processor systems used to the go-to for this. But with Maxwell being as power efficient as it is, I don't know anymore.

[Judahnator]

I think the best PPD/Watt ratio would come in the high-end XEON processors.

 

It is not cost effective, but it would be efficient

[Me1z]

I think the best PPD/Watt ratio would come in the high-end XEON processors.

 

It is not cost effective, but it would be efficient

 

Nope, not even close. Normal CPUs are literally the most inefficent way to fold and have been for several generations.The only thing that made cpu folding viable was the BigAdv bonus, but they decided to shut down the entire project. Your best option is to go with a bunch of 750tis or a 970. They have a near identical PPD/watt ratio.

[Extingquish]

970s seem to have a really good price:performance:wattage ratio IIRC

[Briggsy]

if you get the right WU's, probably any maxwell gpu, although in theory the 980 should have the best performance per watt because a bunch of 750's would be using more cpu overhead and pci-e resources, plus I would think early completion bonus would help the 980. next in line is probably Hawaii, and then Kepler and Tahiti.

[Me1z]

if you get the right WU's, probably any maxwell gpu, although in theory the 980 should have the best performance per watt because a bunch of 750's would be using more cpu overhead and pci-e resources, plus I would think early completion bonus would help the 980. next in line is probably Hawaii, and then Kepler and Tahiti.

 

While you are right about the CPU overhead, folding uses little to no pcie bandwidth. Out of curiosity I forced a GTX 750ti and a GTX 580 into PCIe 2.0 1x mode using adapters with no performance hit whatsoever. GPU folding takes almost one cpu thread to run at full speed assuming you are using intel. This means you could theoretically run 8 gpus in a single machine with no performance hit, if only you could find a board with that many slots. Second Gen Kepler, especially the 780ti, is pretty good with power efficiency, but I'd stay away from Hawaii and Tahiti. On the occasions that I let my 295x2 fold it sucks power like its going out of style. 460k ppd is a little on the low side for a 500w GPU, especially when the 250w GTX 970 gets around 300K.

[Briggsy]

While you are right about the CPU overhead, folding uses little to no pcie bandwidth. Out of curiosity I forced a GTX 750ti and a GTX 580 into PCIe 2.0 1x mode using adapters with no performance hit whatsoever. GPU folding takes almost one cpu thread to run at full speed assuming you are using intel. This means you could theoretically run 8 gpus in a single machine with no performance hit, if only you could find a board with that many slots. Second Gen Kepler, especially the 780ti, is pretty good with power efficiency, but I'd stay away from Hawaii and Tahiti. On the occasions that I let my 295x2 fold it sucks power like its going out of style. 460k ppd is a little on the low side for a 500w GPU, especially when the 250w GTX 970 gets around 300K.

 

interesting. my watt meter reads ~190 watts from the wall when my pc is idle, but with 2x 290's folding @ 1100Mhz it reads about 500-520 watts, and ppd is usually 390-450k depending on the WU. 

 

maybe the 295x2 is really inefficient or something. weird.

[Lewellyn]

I'm getting ~200,000 PPD from one gtx 970, for reference.

[GlassBomb]

It was as I thought that Maxwell is pretty much the go-to for efficiency right now. But I'm still curious of how the upcoming AMD cards will perform.

I am thinking of replacing my 780 with a pair of 970's at the moment.

[Xsilent(X)]

I think the best PPD/Watt ratio would come in the high-end XEON processors.

 

It is not cost effective, but it would be efficient

 

you need a 24 core xeon processors to make a good ppd avg (bigadvv) and also if you want a good ppd you wil have to fold on gpu's cpu is good to for bonus points but thats it.

 

best ppd/watts is now nVidia 980 that card can pull 320K points for less then 230W.

[tobben]

you need a 24 core xeon processors to make a good ppd avg (bigadvv) and also if you want a good ppd you wil have to fold on gpu's cpu is good to for bonus points but thats it.

They increased the minimum requirement for bigadv, so unless you have 24+ cores you don't

even qualify. But as we all know they pulled the plug on bigadv so yah.. bigadv had plenty of

point return when it was a thing. 

 

point wise cpu sucks ass compared to gpu, bigadv was your only cpu option, but now bigadv

isn't a thing so.. yah. they don't really have anything to show for themselves. The only cpu folding

i can do without impeding the gpu TPF too much is light chrome folding.

 

i get 260k on my 970 for less than half the price, but certainly the 980 has overclocking potential

aswell, i would bet on the 970 for the best ppd/$, depends on how many gpus you are planning

to get. I don't know exactly how the 970 compares to the 780 in power consumption.

[Mummy84]

with my HD7970 i need a round 300watts from my wall for core17x(if i member correct). Now with 980 i need ~220watss to run this and a round 250watts with core 15..

[Xsilent(X)]

with my HD7970 i need a round 300watts from my wall for core17x(if i member correct). Now with 980 i need ~220watss to run this and a round 250watts with core 15..

 

 

nice so i was close indeed

 

with my 2 systems i am using like 1200Watts of power i made one rig for regular use. super cheap