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post #1361 of 3024
What kind of performance can I expect out of CFXing 7850s?
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post #1362 of 3024
Quote:
Originally Posted by TokenBC View Post

What kind of performance can I expect out of CFXing 7850s?

Well 7850 are about equal to 6950's so I would say pretty dam good! Are you getting a 2nd 7850? I would love to compare when my 2nd 6850 comes on tuesday.
Edited by Deadboy90 - 3/3/13 at 9:37am
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post #1363 of 3024
Quote:
Originally Posted by TokenBC View Post

What kind of performance can I expect out of CFXing 7850s?

Another way of quantifying the gains would be simply somewhere between 50-75% faster than you are currently performing at the same games and resolution. I think it might even be higher with the newer drivers - perhaps up to 85% or so. Sadly neither SLI nor XFire can truly double the performance when adding like cards - but you still should be very happy with the improvement.

I didn't notice a huge change (but then again I'm running 7970's so even one of them is damn fast) but what I did notice was a huge change in the minimum. I think that's where the big advantage is - unless you're running multiple displays at least. Your peak FPS should already be above the refresh rate of your display on many if not most games... but in complex scenes probably drops to 25-40FPS... now that drop should only be to 40-50FPS which is much less noticeable.

Now if only XFire didn't have the added latencies (Frame Render Time) it would be perfect. That's the one area where the Nvidia guys have an advantage. And it really is noticeable sometimes. frown.gif
post #1364 of 3024
Quote:
Originally Posted by DiGiCiDAL View Post

Sadly neither SLI nor XFire can truly double the performance when adding like cards - but you still should be very happy with the improvement.

They can and do in some titles. I recently tested BF 3 for a chap on Guru3d as he wanted to buy a 3rd, and these were my results.

Bear in mind these figures are in Eyefinity 5760x1080 with 120hz refresh rate.

Graphics settings - Everything maxed out.
V-sync: - Off

The images below are from my G19 display and all figures are ported in via Aida 64. You can see FRAPS bottom right. The update speed is 1hz.

The readings were taken at the reload position of my last campaign save which is in the car park on operation Swordbreaker, where the cars are being blown up. Plenty going on.


1x 7970


2x 7970


3x 7970



As you can see, it scales very well indeed and is not CPU limited at all.

Its one of the few games that doesnt run as fast as I would like as 120fps is my ideal average but hey, its an awesome game and much more taxing that COD-BO2 for example which on the same rig I can run at 200FPS (The games limit)

Then theres crysis 3 which runs at 50fps. LOL
post #1365 of 3024
Was that battlefield 3 single player? multiplayer is very cpu intense, single player all gpu.

Edit - sorry didnt see where you said campaign.
post #1366 of 3024
KaRLiToS ---- [4] 7970 (Quad Damage)






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post #1367 of 3024
Quote:
Originally Posted by Stu-Crossfire View Post


Then theres crysis 3 which runs at 50fps. LOL

Really? I get 60-120fps on my Crossfire 7950's at 1150/1575 with very high settings across the board and 4x MSAA. Do you mean on one GPU?

BTW I noticed my MOBO socket pins were bent and the only way that would of happened is when I took the CPU out to delid. There is no fixing that so I just ordered another one so hopefully there is still hope for my delidded 3570k!!! Maybe... with my luck today who knows!
post #1368 of 3024
Quote:
Originally Posted by Stu-Crossfire View Post


Then theres crysis 3 which runs at 50fps. LOL

Really? I get 60-120fps on my Crossfire 7950's at 1150/1575 with very high settings across the board and 4x MSAA. Do you mean on one GPU?

BTW I noticed my MOBO socket pins were bent and the only way that would of happened is when I took the CPU out to delid. There is no fixing that so I just ordered another one so hopefully there is still hope for my delidded 3570k!!! Maybe... with my luck today who knows!
post #1369 of 3024
I swear I only clicked "submit" once!
post #1370 of 3024
Oops I meant to tell Karlitos about my possible back-from-the-dead ivy bridge.
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