Street magic
15 Nov 2012 13:59:39 UTC
Topic 196630
(moderation:
Hey, guys! Wanna see some magic?
HD 7970 runs 5 WU for about 2150 second i.e. about 430 sec per WU.
it far outperforms all current nvidia gpus and costs considerable less.
best i saw from GTX 680 is 600 sec per WU (user Jeroen).
7970 is about 50% faster and 15% cheaper.
take in mind if you are going to upgrade or build a new system. pci-e 3.0 is necessary
Street magic
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How on earth is the measured integer speed 27512.05 million ops/sec on that particular machine?
don't know. it's boinc
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don't know. it's boinc measurement. something wrong?
Those are great
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Those are great results.
My thought at this point is to replace my tri 680s with dual 7970s with each card installed in an x16 3.0 slot. I think production will be similar if not slightly better than the tri 680s and power consumption should be less. Plus the 7970s cost less than the 680s which is an added benefit for future expansion.
which MB support 3 pci-e 3.0
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which MB support 3 pci-e 3.0 x16?
RE: which MB support 3
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The majority of the the x79 boards support x16/x8/x16. This is because the CPU has a PCI-E controller with 40-lanes. I went with the ASUS Rampage IV which supports x16/x8/x16 or x16/x8/x8/x8.
let me perform test to run
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let me perform test to run 7970 at x8, want to know performance loss in this case.
hm, i've notice no performance loss in case 1 gpu at x16 gen2. same crunching time as x16 gen3
*Magical*
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*Magical*
Yep, if you want crunching
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Yep, if you want crunching power and nothing else, the 7970 is definitely the way to go.
The very vast majority of people however do not buy expensive hardware to increase their RAC. Most people have the hardware for other purposes and distributed computing comes second. In such a case, the 7970 is absolutely destroyed when compared to Nvidia cards in gaming and heavy design work. There is also the issue of heat and high failure rates going on, but that's another story.
But sure, if you have hundreds or even thousands of dollars to invest in nothing but E@H, get the 7970. I totally agree.
RE: 7970 is absolutely
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i can't agree with you at this point, but this is the theme of another holywar thread.
my 7970 under 98% load has core temperature about 56-57C and warm (not hot) heatsink.
yes, HD outshine GTX on this application.
The 7970 can barely hold a
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The 7970 can barely hold a candle to the 670, let alone the 680 or 690 in gaming. As a matter of fact, the proposed theoretical numbers from AMD on their upcoming Tenerife chipset still can't compete with existing nvidia cards;
http://www.hardocp.com/article/2012/05/14/geforce_680_670_vs_radeon_7970_7950_gaming_perf/
With Tenerife claiming 1.2x the performance of the 7970, this still doesn't compete with nvidia in gaming.
We'll see if the 7970 outshines. I don't completely believe the numbers you're getting, but time will tell. Take a look here;
http://einstein.phys.uwm.edu/top_hosts.php
The ATI comes in third with a measured integer speed less than 1/2 of what you're getting. That's with 2 of them. By the looks of it a lot of 590s are leading xfire 7970 setups. But like I say, we'll see.
Can you post a capture of your card under 98% load doing 56-57C? I honestly don't believe you here. These cards run > 80C under full load.
http://www.hardocp.com/article/2012/01/25/asus_radeon_hd_7970_video_card_review/8