EastCoasthandle
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- Joined
- Apr 21, 2005
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System Name | MY PC |
---|---|
Processor | E8400 @ 3.80Ghz > Q9650 3.60Ghz |
Motherboard | Maximus Formula |
Cooling | D5, 7/16" ID Tubing, Maze4 with Fuzion CPU WB |
Memory | XMS 8500C5D @ 1066MHz |
Video Card(s) | HD 2900 XT 858/900 to 4870 to 5870 (Keep Vreg area clean) |
Storage | 2 |
Display(s) | 24" |
Case | P180 |
Audio Device(s) | X-fi Plantinum |
Power Supply | Silencer 750 |
Software | XP Pro SP3 to Windows 7 |
Benchmark Scores | This varies from one driver to another. |
Source
I am not sure if this is true or not but if it is, does this partly explain the poor DX10 performance from the R600?
I am not sure if this is true or not but if it is, does this partly explain the poor DX10 performance from the R600?
source"WDDM now allows for "virtualized" video memory. Virtualization abstracts video memory so that it is no longer necessary to think about creating a resource in either video or system memory. Just specify what the resource is going to be used for and the system will place the memory in the best place possible. Additionally, virtualization allows for the allocation of more memory than actually exists on the hardware. Memory is then paged into the correct hardware as needed.
sourceDue to the memory virtualization features of WDDM, we do not have a VRAM requirement for WDDM drivers...WDDM: The Windows Vista Display Driver Model. [Microsoft.com]: WDDM is a significant evolution of the graphics driver infrastructure and will not be backwards compatible with XPDM drivers.
The WDDM video driver model is only available on Vista machines; XPDM video driver model is available for both Vista, XP, and Server 2003 machines...
The DirectX team and the video card manufacturers have worked hard to bring the WDDM model to fruition, which brings a more reliable and stable graphics environment. For example:
- WDDM virtualizes their video memory: with this feature, your Avalon app is less likely to run out of video memory and fallback to software.
- A larger portion of the WDDM driver code is run in user mode rather than kernel mode (as opposed to XPDM); if the driver crashes in the kernel, the machine blue screens.
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