Street magic

astrocrab
astrocrab
Joined: 28 Jan 08
Posts: 208
Credit: 429,202,534
RAC: 0
Topic 196630

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

Spencer
Spencer
Joined: 6 Nov 12
Posts: 3
Credit: 33,690,980
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Street magic

How on earth is the measured integer speed 27512.05 million ops/sec on that particular machine?

astrocrab
astrocrab
Joined: 28 Jan 08
Posts: 208
Credit: 429,202,534
RAC: 0

don't know. it's boinc

don't know. it's boinc measurement. something wrong?

Jeroen
Jeroen
Joined: 25 Nov 05
Posts: 379
Credit: 738,888,608
RAC: 1,063

Those are great

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.

astrocrab
astrocrab
Joined: 28 Jan 08
Posts: 208
Credit: 429,202,534
RAC: 0

which MB support 3 pci-e 3.0

which MB support 3 pci-e 3.0 x16?

Jeroen
Jeroen
Joined: 25 Nov 05
Posts: 379
Credit: 738,888,608
RAC: 1,063

RE: which MB support 3

Quote:
which MB support 3 pci-e 3.0 x16?

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.

astrocrab
astrocrab
Joined: 28 Jan 08
Posts: 208
Credit: 429,202,534
RAC: 0

let me perform test to run

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

MAGIC Quantum Mechanic
MAGIC Quantum M...
Joined: 18 Jan 05
Posts: 1,373
Credit: 460,278,799
RAC: 101,218

*Magical*

*Magical*

dmike
dmike
Joined: 11 Oct 12
Posts: 76
Credit: 31,369,048
RAC: 0

Yep, if you want crunching

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.

astrocrab
astrocrab
Joined: 28 Jan 08
Posts: 208
Credit: 429,202,534
RAC: 0

RE: 7970 is absolutely

Quote:
7970 is absolutely destroyed when compared to Nvidia cards in gaming and heavy design work.


i can't agree with you at this point, but this is the theme of another holywar thread.

Quote:
There is also the issue of heat and high failure rates going on, but that's another story.


my 7970 under 98% load has core temperature about 56-57C and warm (not hot) heatsink.

Quote:
But sure, if you have hundreds or even thousands of dollars to invest in nothing but E@H, get the 7970. I totally agree.


yes, HD outshine GTX on this application.

dmike
dmike
Joined: 11 Oct 12
Posts: 76
Credit: 31,369,048
RAC: 0

The 7970 can barely hold a

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.

Quote:
my 7970 under 98% load has core temperature about 56-57C and warm (not hot) heatsink.

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

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