FPSVersusGeForce GTX 660 vs Radeon HD 6950
Performance score
GeForce GTX 660 and Radeon HD 6950 are almost equally fast (under 3% apart) — choose by price, socket and platform.
The score is our own estimate from the specs (core count, clock, architecture), not FPS from benchmarks. 100 = the fastest card in our database.
Real tests
What the test measures
Blender is a popular free 3D graphics program. The test makes the device render three ready-made 3D scenes (light, shadows, reflections) and counts how many render passes it finishes per minute. The higher the number, the faster the device handles heavy work: 3D, video editing, photo processing. On a CPU the test loads all cores at once, so it shows the chip's full power; on a graphics card it shows its compute strength.
GPU rendering (Blender)
Median of real test runs on users' computers. It does not show FPS in games. Data updated: 31.10.2026.
Overview
| GeForce GTX 660 | Radeon HD 6950 | |
|---|---|---|
| Score (0–100) | 3.88 | 3.86 |
| Ranking position | 239 | 240 |
| Power efficiency (0–100) | 13.29 | no data |
| Manufacturer | NVIDIA | AMD |
| Type | Desktop | Desktop |
| Architecture | Kepler | TeraScale |
Specifications
| GeForce GTX 660 | Radeon HD 6950 | |
|---|---|---|
| Shader cores | 960 | 1408 |
| Base clock | 980 MHz | no data |
| Boost clock | 1033 MHz | 800 MHz |
| FP32 TFLOPS (calculated) | 1.98 | 2.25 |
| Hardware ray tracing | no | no |
Video memory
| GeForce GTX 660 | Radeon HD 6950 | |
|---|---|---|
| VRAM | 2 GB | 2 GB |
| Memory type | GDDR5 | GDDR5 |
| Memory bus | 192 bit | 256 bit |
| Memory bandwidth | 144 GB/s | 160 GB/s |
Power and connection
| GeForce GTX 660 | Radeon HD 6950 | |
|---|---|---|
| Board power | 140 W | no data |
Pros and cons
GeForce GTX 660
- no notable advantages
Radeon HD 6950
- higher memory bandwidth: 160 vs 144 GB/s
Other comparisons
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Questions and comments
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