Low FPS on enthusiast gaming rig

NakedSnakeAO · Dec 21, 2014

I just setup my new rig over the weekend which is built around an XFX R9 295x2, but I'm hitting less than 30fps in some games (my old GTX 660 ran 30fps at the same settings), so something has to be off. My rig:

Intel i7-4970K (4.0Ghz stock)
MSI z87 Mpower
16GB (8GB x 2) cas 9 1600mhz RAM
Corsair h100i water cooler
XFX R9 295x2
Cooler Master Silent Pro M2 1000W
2 x 240 GB PNY Optima series SSD
1 TB WD HDD
NXZT S340 case
Windows 8.1 Pro

Current display: Sony 40" LCD 1920 x 1080p (120hz)

I am running AMD Catalyst v14.12 Omega (driver 14.501.1003-141120a-178000C) which is the latest driver as of 12/9/14. Did a clean uninstall and reinstalled drivers + CCC, installed RadeonPro and tinkered with using application controlled setting vs global vs profile settings. Using Batman Arkham Origins as an example, which features should be application controlled and which should be set using a profile in CCC or RadeonPro with the R9 295x2? Should crossfire be enabled / disabled?

I expected to see steady 60fps with max settings, but framerate drops to 28-30fps using MSAA 4x (and 8x) in the game menus.

Any help and advice to maximize this card's use is appreciated!

iam2thecrowe · Dec 21, 2014

batman uses physx, so switching to an AMD card has put all that load on your cpu. make sure physx is set to low or disabled. Alternatively you could use the gtx660 as a dedicated physx card.

NakedSnakeAO · Dec 21, 2014

iam2thecrowe :

I had Phys X switched off from the in-game menus and still the performance wasn't great considering the card's power. Are you saying the gtx660 should run alongside the R9 295x2 for the Phys X alone? I didn't even know that could be done!

iam2thecrowe · Dec 21, 2014

NakedSnakeAO :

it's not particularly easy, but hybrid physx can be done. A bit off fiddling with software is required, an extra pcie slot (even a 1x/4x slot will do) and big enough psu.
http://hardforum.com/showthread.php?t=1792373
have a read through that thread

But if you have physx off, try with crossfire disabled.
http://steamcommunity.com/app/209000/discussions/0/792924952503851806/?l=polish

NakedSnakeAO · Dec 24, 2014

iam2thecrowe :

That did the trick. Running Batman on 4xEQAA with FXAA and MLAA and got 48-60fps with no stuttering when I disabled crossfire. It was running at around 25fps with the two R9 290x enabled... I guess it just doesn't play well with Radeons, much less two of them. I think I'm already pushing my PSU to near limit at 1000w with that card and all the components, so I'll pass on adding the extra 660 just for phys x. Thanks for that helpful tip though - I'll consider it down the line.

iam2thecrowe · Dec 24, 2014

NakedSnakeAO :

iam2thecrowe :

That did the trick. Running Batman on 4xEQAA with FXAA and MLAA and got 48-60fps with no stuttering when I disabled crossfire. It was running at around 25fps with the two R9 290x enabled... I guess it just doesn't play well with Radeons, much less two of them. I think I'm already pushing my PSU to near limit at 1000w with that card and all the components, so I'll pass on adding the extra 660 just for phys x. Thanks for that helpful tip though - I'll consider it down the line.

this is why i wont use crossfire or sli anymore, tried them both, there is always a game you really want to play that it doesn't work with. I believe multi gpu's only place are when you need more power than the fastest single gpu card can give you. which i guess you have more or less

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