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[Official] AMD Radeon HD 7950/7970/7990 Owners Thread - Page 922

post #9211 of 38701
Quote:
Originally Posted by brettjv View Post

Cleaned this thread a bit rolleyes.gif
SV, you may be right about the vram thing ... but unfortunately the methodology of the testing that led to that particular deduction is not quite conclusive. Lowering AA does lower vram usage, however, it also lowers the load on the GPU, so it's hard to be quite sure, based on your published observations. Esp. when the fps change is relatively small going from 2x to 4xAA ... it could caused by vram usage going over with 4xAA, or it could just be too hard for the GPU to process 4xAA at that resolution, and it's keeling over a bit.
One way to maybe tell a bit more conclusively is that, in theory, running out of vram should bottleneck your gpu usage somewhat. Thus, if you find you actually get higher GPU usage at 2xAA than you do at 4xAA, it would go a ways towards confirming the 'I'm out of vram and it's hurting my fps' hypothesis.
Interestingly enough, according to the [H] review, at triple monitor resolution, SLI 680's distinctly outperforms 7970XF in terms of max playable settings, esp. in multi-player mode (which uses more vram than SP) ... although they found neither could really handle MSAA at all at 5760x1200 in MP, and both could only do 2xAA in SP. I'll link the article but it's getting a 404 at the moment ... funny I'z just looking at it yesterday headscratch.gif
Anyways, what I'm getting at is the contents of the erstwhile article makes me question whether the situation you describe is truly caused by the 2gb limit, as there was no advantage to 7970XF over 680SLI in terms of max playable settings whatsoever. The 680's were actually stronger according to that article.
Generally speaking, one has a good amount of 'headroom' where a game can 'use' 20-25% over what your card has onboard before it starts to really suffer in perf, at least in terms of a substantial change in AVG fps ... stutters could become more common perhaps at a lower % use 'overage', though.
Thanks for the info!
Also, I will just link to the post in the 680 thread with the graphs showing it happening, and a graph of 2x for comparison, as I don't really want to be filling this thread with any more 680 stuff biggrin.gif
http://www.overclock.net/t/1232473/official-nvidia-gtx680-owners-club/2160#post_17006806
Edited by svthomas - 4/18/12 at 12:50am
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post #9212 of 38701
Anybody here have Accelero Xtreme 7970 mounted on any brand 7950? I would like to get 7950 which fits Accelero Xtreme 7970 cooler. smile.gif I contacted Arctic but not yet havent answered, their support is so slow mad.gif


And Im curious how big FPS you could get with 7950 on Team Fortress 2? biggrin.gif I wont need bigger FPS right now, its more than enough for me smile.gif but still would like to know, just can't wait till the prices comes down in europe too thumb.gif and then... its mine devil.gif
Edited by MooMoo - 4/17/12 at 11:53pm
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post #9213 of 38701
Quote:
Originally Posted by sena View Post

3 HD 7950 would be usseles on that FX 8120 imho.

I dont think the CPU will bottle neck 3 cards
X99
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post #9214 of 38701
Quote:
Originally Posted by MooMoo View Post

Anybody here have Accelero Xtreme 7970 mounted on any brand 7950? I would like to get 7950 which fits Accelero Xtreme 7970 cooler. smile.gif I contacted Arctic but not yet havent answered, their support is so slow mad.gif
And Im curious how big FPS you could get with 7950 on Team Fortress 2? biggrin.gif I wont need bigger FPS right now, its more than enough for me smile.gif but still would like to know, just can't wait till the prices comes down in europe too thumb.gif and then... its mine devil.gif

I have a Accelero Xtreme mounted on my 6950, I love it that damn thing is quiet and keeps it super cool at load about 53c playing BF3
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X99
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post #9215 of 38701
Quote:
Originally Posted by Evil Penguin View Post

I'm *sooooooo* tempted to get another 7970 right now. frown.gif
Quote:
Originally Posted by Ryncrash View Post

I dont think the CPU will bottle neck 3 cards

Amd are garbage for crossfire or sli. This is coming from an ex amd user.
post #9216 of 38701
Quote:
Originally Posted by MooMoo View Post

Anybody here have Accelero Xtreme 7970 mounted on any brand 7950? I would like to get 7950 which fits Accelero Xtreme 7970 cooler. smile.gif I contacted Arctic but not yet havent answered, their support is so slow mad.gif
And Im curious how big FPS you could get with 7950 on Team Fortress 2? biggrin.gif I wont need bigger FPS right now, its more than enough for me smile.gif but still would like to know, just can't wait till the prices comes down in europe too thumb.gif and then... its mine devil.gif

If i can sugest u to wait a week because i'm getting accelero s1 rev2 for my 7950 and putting 2 120mm fans on it. I watch tests and it should perform good and for so cheap. Because it is an old product.. It costs 20€ whereas accelero costs more then 80€.

Or if u rly want accelero xtreme you could buy this one:
http://www.commit.si/sl/virtuemart/22-strojna-oprema/92-zrano-hlajenje/95-vga-hladilniki/563-arctic-accelero-xtreme-plus.html

for half a price, u would only need the copper adapter that costs 3€.
I wanted xtreme but its too bit and wouldnt fit my case:(
post #9217 of 38701
Hey guys I was wondering when I get my 7970 (tomorrow morning from the post office biggrin.gif) do I need to reinstall drivers? Or can I just pull out the 6850 and whack the 7970 in? I have catalyst fully updated. Thanks!
post #9218 of 38701
Quote:
Originally Posted by General_Jaja View Post

Hey guys I was wondering when I get my 7970 (tomorrow morning from the post office biggrin.gif) do I need to reinstall drivers? Or can I just pull out the 6850 and whack the 7970 in? I have catalyst fully updated. Thanks!

For no problems i would do a complete uninstall of all drivers and then put that bad boy in and install drivers. You dont want to have any hick ups form the old drivers
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post #9219 of 38701
Finally got around to cleaning up my cables and swapping my D14 for a H100. So much tidier biggrin.gif

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post #9220 of 38701
Dual 7950 w/ backplates treat for you smile.gif

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