My custom built desktop runs super fast, except when it comes to gaming. For some reason, my graphics card doesn't run games very well. I have a Sapphire 6870, actually 2 (crossfire) and when I play games like battlefield 3 I only get about 27-45 frames per second on ultra graphics, and with Skyrim I only get around 27-39 frames per second on ultra. I read online that my specs should be more than enough to handle it. Running only one card, it runs well but doesn't get as high of a performance as crossfire. Few things you should know first though:
-FPS dips randomly, lags occasionally on simple games like Black ops (stays at 60 FPS then drops all of a sudden to 40 while lagging for about 5 seconds, then shoots back up to 60)
-When playing skyrim, even when it is installed on my solid state, it lags when I do a quick turn (look around fast)
-Both are the same exact cards and model number, cross fire is shown to be enabled in both CCC and GPU-Z
-When monitoring my GPU usage on my second graphics card in GPU-Z, it shows that there is 0% activity where my primary video card has about 7% idle, and my secondary stays 0% even after intense gaming
-Both graphics cards are plugged in 16X PCI-Express ports but only one of them is using 16X while the other is using 4X (no idea why, bios only gives me the option to enable 4X)
I'm not sure where I went wrong with my crossfire, I have already uninstalled and reinstalled the drivers multiple times, done a driver sweeper and both CCC and GPU-Z show they are working properly, except for the fact in GPU-Z it shows 0% activity. Any troubleshooting tips or experiences with fixes would be extremely helpful.
Whilst im playing battlefield 3 I got some low level lagg spikes on ultra as well. But that was with installed in my HHD i moved it to my SSD and it runs perfect and also bumped up my performance of my graphics card and added a second exhaust fan to my case. maybe try cooling it some more.
MS Windows 7 Ultimate 64-bit
Intel Core i7 2600K @ 3.40GHz 50 °C
Sandy Bridge 32nm Technology
8.00 GB Dual-Channel DDR3 @ 665MHz (9-9-9-24)
Gigabyte Technology Co., Ltd. Z68A-D3-B3 (Socket 1155) 41 °C
AMD Radeon HD 6900 Series (ATI AIB) 39 °C
1954GB Seagate ST2000DL003-9VT166 ATA Device HDD (SATA) 32 °C
112GB OCZ-VERTEX2 3.5 ATA Device SSD (SATA) 30 °C
TSSTcorp CDDVDW SH-222AB ATA Device
Realtek High Definition Audio
Yea cooling it doesn't seem to be the problem, I have a coolermaster case which has excellent cooling, my graphics card never run higher than 60 degrees except when benchmarking. And the strange thing is also, is that when I benchmark with Furrmark, it runs up to about 65 degrees but only uses about 70% of each graphics card, which I thought was super whack.
yea having such a good system it should all run smoothly have you tried updating your AMD drivers?
I actually haven't to be honest with you. The graphics card driver is fully updated but perhaps my CPU driver is outdated. When I get off of work I'll be sure to double check but I'm almost positive it is.
The thing is if you are testing with programs that don't support CF, you'll get that "underwhelming" experience. In those cases you'll only be using one of the 6870s, and if it can't cut it in that game then you'll have all kinds of issues. Such is the hassle of multicard setups.
6870's CF will basically emphasize a rendering bottleneck all that much more due to its architectural performance and the fact that dual GPU setups is still detected as a pair of individual GPUs rather than combining both into one massive rendering engine.