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World Community Grid Forums
Category: Support
Forum: BOINC Agent Support
Thread: CPU Performance vs. aggregate WCG Tasks |
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Thread Status: Active Total posts in this thread: 4
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Hey guys,
My cruncher in the basement looks like its about to blow a power supply so I was shopping around newegg today and started wasting a bunch of time trying to design whole new machine to replace the ailing one in the basement. What I couldn't get a bead on was what the most important elements were to maximizing throughput. For this discussion, let's leave GPU co-processing out of the equation because that's an obvious benefit. Largely, I think the processor type and number of cores, including hyperthreading, with processor speed is the primary factor. Does that gel? What I don't get is if a ~3.0 GHZ i5 3rd Gen is comparable to a ~3.0 GHZ i7 3rd Gen if both have 4 cores and both have hyperthreading. Is it worth the extra $? Would it even be noticeable? I was actually surprised to not see a sticky about this subject. I'm sure this has been discussed previously, so if someone has a link readily available please forward. |
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branjo
Master Cruncher Slovakia Joined: Jun 29, 2012 Post Count: 1892 Status: Offline Project Badges: 
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1. Nope, i5s (all gens) do not have HT. It is 4 cores / 4 threads. So i7-3770 (3rd gen, Ivy Bridge) with 8 threads / 4 cores is no brainer. And the TDP is very gentle - when running full capacity 8 CPU tasks on 100% it is only 46 Watts
---------------------------------------- 2. GPU: if you are going to crunch WCG, go with ATI. The most cost efficient (both in term of price and in terms of TDP) is 7750. It is low-end 7000 series card (819 GigaFLOPS Single Precision Compute Power), but I am satisfy with it and the results. 7970 is a cannon(4.3 TeraFLOPS Single, 1.01 TeraFLOPS Double Precision Compute Power  ), but much more expensive with much higher TDP  3. Do not underestimate PSU 4. Quality Mobo is must, buy one which allows adding (at least) another GPU 5. Do not save money on case  6. Cheers   Crunching@Home since January 13 2000. Shrubbing@Home since January 5 2006  [Edit 2 times, last edit by branjo at Feb 15, 2013 8:38:15 PM] |
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Sgt.Joe
Ace Cruncher USA Joined: Jul 4, 2006 Post Count: 7846 Status: Offline Project Badges: 
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You can use this http://www.cpubenchmark.net/high_end_cpus.html#cpuvalue to get an idea of price vs. performance.
----------------------------------------Cheers
Sgt. Joe
*Minnesota Crunchers* |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
1. Nope, i5s (all gens) do not have HT. It is 4 cores / 4 threads. So i7-3770 (3rd gen, Ivy Bridge) with 8 threads / 4 cores is no brainer. And the TDP is very gentle - when running full capacity 8 CPU tasks on 100% it is only 46 Watts That's what I had recalled from previous system building. However, I read this today on Intel's site: Intel HT Technology is available on previous-generation Intel® Core™ processors, the 3rd generation Intel® Core™ processor family, and the Intel® Xeon® processor family. By combining one of these Intel® processors and chipsets with an OS and BIOS supporting Intel HT Technology, you can: •Run demanding applications simultaneously while maintaining system responsiveness •Keep systems protected, efficient, and manageable while minimizing impact on productivity •Provide headroom for future business growth and new solution capabilities Source: http://www.intel.com/content/www/us/en/archit...threading-technology.html Then if you watch the demo, Intel make's it seem like the new i3s, i5s, and i7s all have HT. Source: http://www.intel.com/content/www/us/en/archit...ing-technology-video.html If you watch the vid, there's no dilineation stating i7's are the only ones that have it anymore. Cheap marketing trick or fun new fact? Doing some more digging, I found this chart which shows all processors with HT support by Intel. And there's a lot of them. The kicker? It would appear the i5 is actually a 2-core/4-thread processor. Source: http://ark.intel.com/search/advanced/?s=t&HyperThreading=true So in short, I agree, but because I always thought the i5 was a true 4-core I assumed if it NOW had HT it would be a 4-core/8-thread which is not the case. Otherwise, it seems like the key factors are:
Sound good? Thanks. |
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