bit-tech.net

AMD Radeon 7970 3GB GHz Edition Review

Comments 51 to 57 of 57

Reply
silky 23rd June 2012, 13:04 Quote
For those who want to compare with older cards, there is a website somewhere which lets you compare anything with anything. Unfortunately I lost the link :(
Skulldragon 23rd June 2012, 13:26 Quote
Do you mean this website?: http://www.hwcompare.com/

It's a pretty useful resource, however, unless there are actual game benchmark comparisons for the two cards you are trying to compare, it can be difficult to know how the theoretical differences translate into in-game performance
Baz 23rd June 2012, 18:26 Quote
Just repeating what others have said; 4GB versions of the 680 are no faster than 2GB versions, even at 5,760 x 1080 (three-screen surround). It's the bus-size that's the limiting factor, something that using higher density chips do not help.
Action_Parsnip 23rd June 2012, 19:48 Quote
Quote:
Originally Posted by Baz
Just repeating what others have said; 4GB versions of the 680 are no faster than 2GB versions, even at 5,760 x 1080 (three-screen surround). It's the bus-size that's the limiting factor, something that using higher density chips do not help.

I too think that bandwidth is an issue with the 680. The ratio of compute to bandwidth has dropped HUGELY compared to the GTX 580, for starters.

Also if you look at power consumption on 680 SLI in multimonitor situations Battlefield 3 , despite being the most graphically demanding current title, does not draw the most at the wall. It is also known to be HIGHLY memory bandwidth sensitive.** I would theorise that the higher turbo states do not engage in this game at this resolution due to the GPUs not having enough data on hand to warrant maximum clock speeds.

http://hardocp.com/article/2012/03/28/nvidia_kepler_geforce_gtx_680_sli_video_card_review/8

In this test Deus Ex. records the highest power consumption number I would guess due to it being both the *least* bandwidth sensitive title and best matching it's coding to the architecture of the GTX 680 GPU.


** See Battlefield 3 test results run with the VERY bandwidth limited Gefore GT 640 GDDR3

http://www.anandtech.com/show/5969/zotac-geforce-gt-640-review-/10
xxxsonic1971 24th June 2012, 04:27 Quote
the 3gb 7970 is the sweet spot, most powerful gpu on the planet!!!
silky 24th June 2012, 16:36 Quote
Quote:
Originally Posted by Skulldragon
Do you mean this website?: http://www.hwcompare.com/

It's a pretty useful resource, however, unless there are actual game benchmark comparisons for the two cards you are trying to compare, it can be difficult to know how the theoretical differences translate into in-game performance

Yeah thats the link thanks :) I bookmarked it now.
Fizzl 26th June 2012, 19:40 Quote
Some data on how two of these perform on 6048*1080 (because who plays without bezel correction?) vs the 690 would be nice. After all you could get two for the price of a 690.
Log in

You are not logged in, please login with your forum account below. If you don't already have an account please register to start contributing.



Discuss in the forums