Could it be because my card only has 256 mb of vram? here is the GPU data from GPU shark
GPU Shark v0.7.3
(C)2013 Geeks3D - www.geeks3d.com
----------------------------------------
Elapsed time: 00:01:13
OpenGL memory - total:256MB, usage:120MB
GPU 1 - NVIDIA Quadro FX 570
- GPU: G84
- Bus ID: 3
- Device ID: 10DE- 40E
- Subvendor: NVIDIA (10DE- 474)
- Driver version:
- NV driver branch:
- OS: Windows XP 32-bit
- Bios version: 60.84.6a.00.11
- GPU memory size: 0MB
- Bus width: 128-bit
- GPU memory location: GPU dedicated
- GPU memory type: DDR2
- GPU temp: 69.0°C (min:69.0°C - max:74.0°C)
- Fan speed: 60.0%
- GPU cores: 16
- TPC: 1 (NV)
- TPC mask: 0001 (NV)
- SM: 1 (NV)
- SP: 16 (NV)
- Performance states: 2
- Performance state P0 (current)
- GPU: 460.0MHz
- Mem: 400.0MHz
- VDDC: 1.200V
- Performance state P12
- GPU: 208.0MHz
- Mem: 100.0MHz
- VDDC: 1.200V
- True current clock speeds / VDDC:
- Core: 459.0MHz
- Mem: 399.0MHz
- VDDC: 1.200V
- GPU and memory usage:
- GPU: 3.0%, max: 74.0%
- GPU memory: 46.7%
- GPU memory controller: 7.0%
- Limiting policies (NVIDIA):
- no limitation