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Loui_h20
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Low power GT630 v2 384 cuda cores.

Hello guys and girls,

For the past couple of months I've been toying with the idea of buying a few of these GT 630 v2s to fill a GPU crunching box, made from ebay parts. I'm in no rush to build it just yet. Just hoping that one day CEP2 will include GPU WU in the future so I might as well get all the info ready now. Will have to stick with cuda for now as the box will also be used for Blender3d Cycles work..... If I ever get around to doing a few of the tutorials :-S.

Specs of the cards.
http://www.techpowerup.com/gpudb/2041/geforce-gt-635-oem.html
http://www.techpowerup.com/gpudb/2396/geforce-gt-630-rev-2-pcie-x8.html
http://www.techpowerup.com/gpudb/2376/geforce-gt-630-rev-2.html
All GK208's with 384 cuda cores work with a TDP of 25w running at 692.7 GFLOPS (FMA) so GFLOPS/W is 27.68 if I'm reading the wiki right.
All info from www.wikipedia.org/wiki/Comparison_of_Nvidia_graphics_processing_units#GeForce_600_Series

Just noticed that the old 96 core GT630 are on your disallowed list confusing the issue somewhat. May I suggest somebody update the page.

Has anyone else got any ideas for a low power GPU crunching box?
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[Feb 17, 2014 5:49:02 PM]   Link   Report threatening or abusive post: please login first  Go to top 
Falconet
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Re: Low power GT630 v2 384 cuda cores.

Hi,

Curently, no WCG project has any GPU applications. If a project ends up supporting GPU computations, they will be using OpenCL, which is slower in Nvidia cards. The list was, if I recall, for the HCC GPU application and is no longer valid as such.

So right now, buy the card you need for your work and nothing else.
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AMD Ryzen 5 1600AF 6C/12T 3.2 GHz - 85W
AMD Ryzen 5 2500U 4C/8T 2.0 GHz - 28W
AMD Ryzen 7 7730U 8C/16T 3.0 GHz
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[Edit 1 times, last edit by Falconet at Feb 17, 2014 6:06:06 PM]
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Loui_h20
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Re: Low power GT630 v2 384 cuda cores.

Thanks Falc, but I was just asking if anyone had any ideas for a low power crunching box. I'm not actually going to buy the stuff just yet, okay I've just received 2x (bronze) 80 plus psu, but when the time comes I'll be ready. I'm in no rush to build anything just yet. When I see a bargain on ebay I do go for it though.

Do you have any suggestions for ATI card then? Yes I can look at the wiki but I'd like to hear from people with low power, non external powered card gpu crunching boxes.
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[Feb 17, 2014 6:24:09 PM]   Link   Report threatening or abusive post: please login first  Go to top 
Falconet
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Re: Low power GT630 v2 384 cuda cores.

Maybe one of the HD77XX or equivalent in the RX series.
You could also buy an APU. The A8-5600K, 4 core CPU plus a good GPU (BOINC reports more 1000 gigaflops for the HD7560D but I doubt that) for £64. And overclocking potential. My whole PC uses 103 watts when using all four cores with BOINC.
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AMD Ryzen 5 1600AF 6C/12T 3.2 GHz - 85W
AMD Ryzen 5 2500U 4C/8T 2.0 GHz - 28W
AMD Ryzen 7 7730U 8C/16T 3.0 GHz
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[Edit 1 times, last edit by Falconet at Feb 17, 2014 6:27:54 PM]
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Former Member
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Re: Low power GT630 v2 384 cuda cores.

The power usage of the GT 630 v2 at 25 watts is hard to beat. But instead of using two GT 630 v2s I would prefer one GeForce GTX 750 Ti. On the market this week I think. 60 watts with roughly the same performance plus it's a newer card. You'd probably pay more though.
[Feb 17, 2014 7:43:52 PM]   Link   Report threatening or abusive post: please login first  Go to top 
ryan222h
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Re: Low power GT630 v2 384 cuda cores.

The AMD Radeon HD 7770 has 3-6x the Open CL performance of the GT630, with a TDP of 80 watt but usually uses much less power.

Its less than $100 too.

Not sure what's so special about the GT630.

Edit: Just realized there's several versions of the GT630. The newest one might be performance comparable to the 7770. It seems suspect that they were able to quadruple the CUDA cores but cut the power by 2/3 at the same time.

Also, unless there's a specific project or application that you plan on crunching right now, it doesn't make sense to buy imo.
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[Edit 2 times, last edit by ryan222h at Feb 17, 2014 8:30:51 PM]
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Loui_h20
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Re: Low power GT630 v2 384 cuda cores.

Ryan, with the move to 28nm gpus I think Nvidia have, maybe by chance made the GK208 one of the most efficient low power gpus out there. The smaller the manufacturing process gets the more they can pack into the same space it seems. At 40nm I think the GT630 was packing just 96 cores.

I've managed to acquire some Xeons for cheap on ebay. 2 x E5410 for £12+P&P and 1x L5420 for £12.50. I'll undervolt and underclock these cpus. When the time comes they're what I'll be basing my GPU boxes on.

Hmmmm. Let me check those cards out Neezeq. If what you say is true then those cards could make it into my wish list. Before I found out about WCG CEP2 project I was heavily into S@H so I bought a GTX 650ti to help crunch. Finished my SETI work then went CEP2 24/7. I figured we have more pressing problems to deal with before we chat with E.T.
Blink and you might miss it!! I had no idea about the 750ti. Those 630s have got some serious competition in the performance per watt race. It look like the 28nm 750ti's will need external power. Pity. I suspect by the time I have all the bits and pieces for the builds Nvidia will have moved to 20nm gpus negating the cards external power needs.

Yep AMDs new GCN APUs looks really interesting too. Two of those cpus will be the basis of ATI boxes if and when they come out with some really efficient cards.

I stand corrected! Looking at this page http://videocardz.com/49647/nvidia-geforce-gt...pecifications-performance it seems the reference design doesn't need an external power connecter !
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[Edit 1 times, last edit by Loui_h20 at Feb 17, 2014 11:43:18 PM]
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Coleslaw
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Re: Low power GT630 v2 384 cuda cores.

Falconet, you make claims that aren't necessarily true. It is not known what the next GPU project will bring since there is none currently in the pipelines for the foreseeable future. Unless you can show me a link that states otherwise. The scientists choose which technology to support and thus it is very possible a CUDA only option could happen.

Also, it would be best to make purchase decisions with a current use in mind. Loui_H2O, do you have another project in mind for these cards? GPUGrid could use nVidia but not AMD or Intel. POEM is BETA testing an OpenCL app right now, but until it is ready there truly is no telling how efficient the apps will be on any platform.

Next, keep in mind that with all of the cryptocurrency miners out there, AMD cards are harder to get ahold of for reasonable pricing.
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[Edit 1 times, last edit by Coleslaw at Feb 18, 2014 1:34:20 AM]
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Loui_h20
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Re: Low power GT630 v2 384 cuda cores.

Who knows what projects are just around the corner but I guess I'll go back to crunching Seti tasks on these boxes if and when all the parts come together. POEM looks interesting. Never crunched on a linux box before so maybe this will be the perfect time to learn about Linux too.

Hopefully with most of the mid to high power ATI cards being bought by miners, Nvidia have responded with the new 750ti. Hopefully this will keep the prices rock bottom as the two companies battle it out over the next few months.
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Coleslaw
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Re: Low power GT630 v2 384 cuda cores.

Don't hold your breath on nVidia lowering prices. They just had a really good sales fourth quarter. http://news.cnet.com/8301-1001_3-57618812-92/...l-are-buying-nvidia-gpus/

POEM will also eventually get a Windows app. It is just a matter of time. You could also try supporting Albert/Einstein, Asteroids, Milkyway, or one of the math projects. Many of them have badges to collect as well. ;)

Edit: I'm guessing the mass majority of the gaming community has reached a point where they realize that games aren't much faster with more cores but rather better video cards. Still too many games not fully taking advantage of CPU's capabilities. Many games still don't even take advantage of direct X 11. I also seriously doubt many game companies are too worried about outpacing the new consoles capabilities either. So, graphics cards are the way to go. Then spend the rest of your money on a cheap tablet for on the go gaming.
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[Edit 1 times, last edit by Coleslaw at Feb 18, 2014 12:52:21 PM]
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