Hello,
I want to share with you some bizarre benchmark results on my old build.
CPU: Intel Quad Q9650 @3.8 GHz
MOBO: Gigabyte EP35-DS3R
RAM: 8GB (4 x 2) PC2-6400 @ 840 MHz 5-5-5-16
Until recently, I've had 1GB Radeon 5870.
I was stuck in some games (GTA IV, Gothic 4) at average 25-35 fps on triple monitors 2 x 1680x1050 Eyefinity, no matter what internal game & catalyst 3D gfx settings I chose.
Sometimes I suffered fps drops to 15-20 fps.
GTA IV benchmark @ 5396 x 1050, GFX settings @high,
Radeon 5870 OC @ GPU 900 MHz / Mem 1250 MHz
Average FPS: 32.25
CPU Usage: 67%
System memory usage: 67%
Video memory usage: 95%
Seemed to me like I need more VRAM as there are CPU & memory reserves.
So I upgraded to 2GB Radeon 6970.
Now, surprise:
Radeon 6970, stock clocks, 2GB
Average FPS: 28.58
CPU Usage: 66%
System memory usage: 47%
Video memory usage: 42%
Even less fps !
How is it possible, that I have lot of unused CPU, GPU, VRAM, that game fails to use to improve performance?!
Some more details:
- GTA IV Multithreading works OK on Intel Quad, no core is used @100%, they stay in 50-80 % range.
- When I disable shadows in GTA IV totally, there is 10-15 fps improvement.
- Gothic 4 shows on 6970 exactly same low performance as before - stuck @ 30 fps.
- some other games run now in Eyefinity much better, some don't.
- Radeon 5870 benchmark was made @ 4GB 1080 MHz DDRAM2. Had to reduce DDRAM MHz after I added
another OCZ DDR2 PC2-6400 Reaper CL4 4GB. Old kit overclocked much better.
There must be some bottleneck. Probably has to do with RAM, is there a way to test it ? Some software to log amount of RAM transfers/RAM channels usage?
Do you have any other ideas ?
PS. Sorry for my bad English, is not my native language.
I want to share with you some bizarre benchmark results on my old build.
CPU: Intel Quad Q9650 @3.8 GHz
MOBO: Gigabyte EP35-DS3R
RAM: 8GB (4 x 2) PC2-6400 @ 840 MHz 5-5-5-16
Until recently, I've had 1GB Radeon 5870.
I was stuck in some games (GTA IV, Gothic 4) at average 25-35 fps on triple monitors 2 x 1680x1050 Eyefinity, no matter what internal game & catalyst 3D gfx settings I chose.
Sometimes I suffered fps drops to 15-20 fps.
GTA IV benchmark @ 5396 x 1050, GFX settings @high,
Radeon 5870 OC @ GPU 900 MHz / Mem 1250 MHz
Average FPS: 32.25
CPU Usage: 67%
System memory usage: 67%
Video memory usage: 95%
Seemed to me like I need more VRAM as there are CPU & memory reserves.
So I upgraded to 2GB Radeon 6970.
Now, surprise:
Radeon 6970, stock clocks, 2GB
Average FPS: 28.58
CPU Usage: 66%
System memory usage: 47%
Video memory usage: 42%
Even less fps !
How is it possible, that I have lot of unused CPU, GPU, VRAM, that game fails to use to improve performance?!
Some more details:
- GTA IV Multithreading works OK on Intel Quad, no core is used @100%, they stay in 50-80 % range.
- When I disable shadows in GTA IV totally, there is 10-15 fps improvement.
- Gothic 4 shows on 6970 exactly same low performance as before - stuck @ 30 fps.
- some other games run now in Eyefinity much better, some don't.
- Radeon 5870 benchmark was made @ 4GB 1080 MHz DDRAM2. Had to reduce DDRAM MHz after I added
another OCZ DDR2 PC2-6400 Reaper CL4 4GB. Old kit overclocked much better.
There must be some bottleneck. Probably has to do with RAM, is there a way to test it ? Some software to log amount of RAM transfers/RAM channels usage?
Do you have any other ideas ?
PS. Sorry for my bad English, is not my native language.