Hi.
I'm having issues with my PC. The important specs are -
The issues revolve around GPU usage and framerates and I'm not sure where the problem lies. Basically, most games will use the GPU at full whack, all the time (unless I turn VSYNC on), but there are some where both the framerate AND the GPU usage drop. I've seen fps get lower than 30 at the same time the GPU is working at less than 40%. Why? Is there a weird bottleneck going on that only affects some things?
I did an experiment... I ran Kombuster (GPU stress test) and Prime95 at the same time with various changes on the CPU and Prime95 side, see results below -
Games - Crysis 3 and Far Cry both use all the GPU all the time. Elite Dangerous (beta) will go lower than 30fps even while using less than 40% GPU.
I thought it might be a power thing, but with the CPU restored to stock it should be using less power and yet the GPU performance gets even worse.
The PC was originally built with an ATI 5870, replaced with the 7950 a year or so ago. I don't recall any such issues with the 5870 but can't be sure.
Any insights appreciated!
I'm having issues with my PC. The important specs are -
Code:
Operating System
Microsoft Windows 7 Home Premium 64-bit SP1
CPU
Intel Core i7 920 @ 2.67GHz (OCed to 4GHz)
Bloomfield 45nm Technology
RAM
6.00 GB Triple-Channel DDR3
Motherboard
Gigabyte Technology Co., Ltd. X58A-UD7 (Socket 1366)
Graphics
ATI Radeon HD 7950
Drives
119GB SAMSUNG SSD 830 Series ATA Device (SSD)
1397GB SAMSUNG HD154UI ATA Device (SATA)
PSU
XFX 650
The issues revolve around GPU usage and framerates and I'm not sure where the problem lies. Basically, most games will use the GPU at full whack, all the time (unless I turn VSYNC on), but there are some where both the framerate AND the GPU usage drop. I've seen fps get lower than 30 at the same time the GPU is working at less than 40%. Why? Is there a weird bottleneck going on that only affects some things?
I did an experiment... I ran Kombuster (GPU stress test) and Prime95 at the same time with various changes on the CPU and Prime95 side, see results below -
Code:
CPU Ghz Prime95 Cores GPU usage %
4 8 49
4 7 94
4 6 (or less) 100
2.67 8 5 - 30 (it chops and changes)
2.67 7 81
2.67 6 94
2.67 5 98
2.67 4 95
2.67 3 100
Games - Crysis 3 and Far Cry both use all the GPU all the time. Elite Dangerous (beta) will go lower than 30fps even while using less than 40% GPU.
I thought it might be a power thing, but with the CPU restored to stock it should be using less power and yet the GPU performance gets even worse.
The PC was originally built with an ATI 5870, replaced with the 7950 a year or so ago. I don't recall any such issues with the 5870 but can't be sure.
Any insights appreciated!
