GeForce GT 240 Exposes OpenGL 4.0 Extensions

OpenGL 4.0

Zotac GeForce GT 240

I recently received a Zotac GeForce GT 240 and I was surprised to discover that this model of GeForce exposes more OpenGL extensions that a GeForce GTX 2xx (GTX 260 or GTX 280).

My test bed runs with Windows 7 64-bit and the graphics drivers used are the R197.15.

A GTX 2xx exposes 212 OpenGL extensions (the complete list is available HERE).

After a quick inspection, it turns out that these extra extensions are OpenGL 4.0 ones. Check out this post for more details on new OpenGL 4.0 extensions.

Here are the 6 extra OpenGL extensions exposed by the GT 240:

NVIDIA ForceWare 197.41 and GPU Caps Viewer

Why the GT 240 exposes OpenGL 4.0 extensions and not other high end cards such as the GTX 260, GTX 280 or GTX 295 ? I have currently no answer…

Update (2010.04.13)
The difference comes from the GPU architecture: the GeForce GT 240 is a DX10.1 GPU while GTX 2xx are based on a DX10 GPU.

Anyway, the GeForce GT 240 exposes a total of 218 OpenGL extensions. Here are sone additional information from GPU Caps Viewer:
- OpenGL Renderer: GeForce GT 240/PCI/SSE2
- Drivers Version: (3-16-2010) – nvoglv64
- Video Memory Size: 1024 MB
- Video Memory Type: DDR3
- Clocks level #0: Core: 135MHz – Memory: 135MHz – Shader: 270MHz
- Clocks level #1: Core: 405MHz – Memory: 324MHz – Shader: 810MHz
- Clocks level #2: Core: 550MHz – Memory: 790MHz – Shader: 1340MHz
- BIOS String:
- OpenGL Version: 3.3.0
- GLSL (OpenGL Shading Language) Version: 3.30 NVIDIA via Cg compiler
- CUDA Compute Capability: 1.2

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