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5770 crossfire vs 5830

H

hodgenutts

Senior member
Question. I do not have alot of experience with crossfire. I currently have an xfx 5770. My Mobo is an asus which supports crossfire. We threw another 5770 in and on 3dmakrvantage I can see about a 45% improvement on framerates. HOWEVER, this is a synthetic test. When I play Rift I don't really see an improvement. I am running my resolution at 1050 on a 22 inch monitor. I have 6 gigs of ddr3 ram, and a intel i3 530 running at 3.4 on stock voltage stable. My question is, is it possible the game has poor multi GPU support, and would I notice a difference if I got rid of the two 5770's and got an xfx 5830 as the price on those just took a big drop. Would there be much of a difference between two 5770 vs. one 5830. I currently have an OCZ 700 watt power supply, so power isn't an issue here. Thank you very much for your help.
 
It is definitely possible that crossfire is poorly supported by that game.
Also, I would think that a 5830 would be a big downgrade from two 5770s. (Except in games that don't support crossfire)
 
2x 5770 > 1x 5830.

ofc it depends on if you get it working, with said titles.
Are you sure your not CPU bottlenecked? or Ram? or some otherway, because that would limit the usefullness of throwing a more powerfull gpu in there.
 
No I'm not bottlenecking at ram or CPU. Got 6 gigs of 1333 ddr3 and i3 530 overclocked from2.93 ghz to 3.4 ghz stable
 
Have you used msi afterburner to check gpu usage/ fps of your 2 -5770's to ensure crossfire is working and adding fps ?
You want to have installed the crossfire profiles and run in full screen.
If you don't get satisfactory results, you have the option of many powerful single gpu options.
Sell both those cards and get a 6870.
 
Rift probably has little, if any, Crossfire support.

Rift is a CPU-heavy game, and not really optimized yet.

Crossfire needs quad+ cores to really shine. Crossfire performance is more influenced by the number of cores than just a single card. Since you only have a dual core with hyperthreading, you probably aren't getting the full benefit the setup can potentially offer. The i3 530 isn't really slow, though, so this attribute can be minimal or great depending on how a game responds to CPU speed.

All of these things are probably working to conspire against you.
 
I haven't used afterburner, but I did run 3dmarkvantage. I went from 9500 to 14000 on my score. However no improvement in Rift. So I figured I needed a better single gpu, or a better processor to get the performance in game I'm looking for. Tyvm to everyone who has responded by the way
 
As mentioned, poor crossfire support/scaling in some cases can't be overcome. Do some reading, before you chase your problem by buying a new cpu.
For example, I have this issue with, Shift 2.
NFS Shift unleashed still has no SLI scaling/support, the game has been out now for many weeks.
 
the 530 shouldnt have a problem hitting 4.0, even on stock cooler.

jack it up to 4.0+ to compensate for only having a duallie, as others have said you need a good quad for a CF/SLI setup to shine.
 
I currently have the 530 running at 3.4 on air stable. So if some games don't scale well xfired, this seems to be a case where the 5830 would actually beat out xfired 5770's. Multi gpu's don't seem likethey will benifit in this case. Tyvm everyone
 
Also depending on the board he might be running 16x/2x crossfire (the second port is gen1 4x so gen2 2x equivalent).
 
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