NVIDIA GeForce GT 640 Rev. 2 vs NVIDIA GeForce GTX 660M
Comparative analysis of NVIDIA GeForce GT 640 Rev. 2 and NVIDIA GeForce GTX 660M videocards for all known characteristics in the following categories: Essentials, Technical info, Video outputs and ports, Compatibility, dimensions and requirements, API support, Memory, Technologies. Benchmark videocards performance analysis: CompuBench 1.5 Desktop - Face Detection (mPixels/s), CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s), CompuBench 1.5 Desktop - T-Rex (Frames/s), CompuBench 1.5 Desktop - Video Composition (Frames/s), CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s), GFXBench 4.0 - Car Chase Offscreen (Frames), GFXBench 4.0 - Manhattan (Frames), GFXBench 4.0 - T-Rex (Frames), GFXBench 4.0 - Car Chase Offscreen (Fps), GFXBench 4.0 - Manhattan (Fps), GFXBench 4.0 - T-Rex (Fps), PassMark - G3D Mark, PassMark - G2D Mark, Geekbench - OpenCL, 3DMark Fire Strike - Graphics Score.
Differences
Reasons to consider the NVIDIA GeForce GT 640 Rev. 2
- Videocard is newer: launch date 1 year(s) 2 month(s) later
- Around 25% higher core clock speed: 1046 MHz vs 835 MHz
- Around 10% better floating-point performance: 803.3 gflops vs 729.6 gflops
- Around 2% lower typical power consumption: 49 Watt vs 50 Watt
- 2.5x more memory clock speed: 5008 MHz vs 2000 MHz
- 2.1x better performance in GFXBench 4.0 - Car Chase Offscreen (Frames): 2309 vs 1094
- Around 49% better performance in GFXBench 4.0 - Manhattan (Frames): 3354 vs 2253
- Around 1% better performance in GFXBench 4.0 - T-Rex (Frames): 3220 vs 3176
- 2.1x better performance in GFXBench 4.0 - Car Chase Offscreen (Fps): 2309 vs 1094
- Around 49% better performance in GFXBench 4.0 - Manhattan (Fps): 3354 vs 2253
- Around 1% better performance in GFXBench 4.0 - T-Rex (Fps): 3220 vs 3176
| Specifications (specs) | |
| Launch date | 29 May 2013 vs 22 March 2012 |
| Core clock speed | 1046 MHz vs 835 MHz |
| Floating-point performance | 803.3 gflops vs 729.6 gflops |
| Thermal Design Power (TDP) | 49 Watt vs 50 Watt |
| Memory clock speed | 5008 MHz vs 2000 MHz |
| Benchmarks | |
| GFXBench 4.0 - Car Chase Offscreen (Frames) | 2309 vs 1094 |
| GFXBench 4.0 - Manhattan (Frames) | 3354 vs 2253 |
| GFXBench 4.0 - T-Rex (Frames) | 3220 vs 3176 |
| GFXBench 4.0 - Car Chase Offscreen (Fps) | 2309 vs 1094 |
| GFXBench 4.0 - Manhattan (Fps) | 3354 vs 2253 |
| GFXBench 4.0 - T-Rex (Fps) | 3220 vs 3176 |
Reasons to consider the NVIDIA GeForce GTX 660M
- Around 82% higher texture fill rate: 30.4 billion / sec vs 16.74 GTexel / s
- Around 3% better performance in CompuBench 1.5 Desktop - Face Detection (mPixels/s): 10.837 vs 10.475
- 2.3x better performance in CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s): 405.086 vs 173.537
- 34.3x better performance in CompuBench 1.5 Desktop - T-Rex (Frames/s): 1.098 vs 0.032
- 2.5x better performance in CompuBench 1.5 Desktop - Video Composition (Frames/s): 21.798 vs 8.717
- 3.2x better performance in CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s): 33.754 vs 10.454
| Specifications (specs) | |
| Texture fill rate | 30.4 billion / sec vs 16.74 GTexel / s |
| Benchmarks | |
| CompuBench 1.5 Desktop - Face Detection (mPixels/s) | 10.837 vs 10.475 |
| CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s) | 405.086 vs 173.537 |
| CompuBench 1.5 Desktop - T-Rex (Frames/s) | 1.098 vs 0.032 |
| CompuBench 1.5 Desktop - Video Composition (Frames/s) | 21.798 vs 8.717 |
| CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s) | 33.754 vs 10.454 |
Compare benchmarks
GPU 1: NVIDIA GeForce GT 640 Rev. 2
GPU 2: NVIDIA GeForce GTX 660M
| CompuBench 1.5 Desktop - Face Detection (mPixels/s) |
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| CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s) |
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| CompuBench 1.5 Desktop - T-Rex (Frames/s) |
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| CompuBench 1.5 Desktop - Video Composition (Frames/s) |
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| CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s) |
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| GFXBench 4.0 - Car Chase Offscreen (Frames) |
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| GFXBench 4.0 - Manhattan (Frames) |
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| GFXBench 4.0 - T-Rex (Frames) |
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| GFXBench 4.0 - Car Chase Offscreen (Fps) |
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| GFXBench 4.0 - Manhattan (Fps) |
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| GFXBench 4.0 - T-Rex (Fps) |
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| Name | NVIDIA GeForce GT 640 Rev. 2 | NVIDIA GeForce GTX 660M |
|---|---|---|
| CompuBench 1.5 Desktop - Face Detection (mPixels/s) | 10.475 | 10.837 |
| CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s) | 173.537 | 405.086 |
| CompuBench 1.5 Desktop - T-Rex (Frames/s) | 0.032 | 1.098 |
| CompuBench 1.5 Desktop - Video Composition (Frames/s) | 8.717 | 21.798 |
| CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s) | 10.454 | 33.754 |
| GFXBench 4.0 - Car Chase Offscreen (Frames) | 2309 | 1094 |
| GFXBench 4.0 - Manhattan (Frames) | 3354 | 2253 |
| GFXBench 4.0 - T-Rex (Frames) | 3220 | 3176 |
| GFXBench 4.0 - Car Chase Offscreen (Fps) | 2309 | 1094 |
| GFXBench 4.0 - Manhattan (Fps) | 3354 | 2253 |
| GFXBench 4.0 - T-Rex (Fps) | 3220 | 3176 |
| PassMark - G3D Mark | 1449 | |
| PassMark - G2D Mark | 265 | |
| Geekbench - OpenCL | 4031 | |
| 3DMark Fire Strike - Graphics Score | 475 |
Compare specifications (specs)
| NVIDIA GeForce GT 640 Rev. 2 | NVIDIA GeForce GTX 660M | |
|---|---|---|
Essentials |
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| Architecture | Kepler 2.0 | Kepler |
| Code name | GK208 | GK107 |
| Launch date | 29 May 2013 | 22 March 2012 |
| Launch price (MSRP) | $89 | |
| Place in performance rating | 1275 | 1277 |
| Type | Desktop | Laptop |
Technical info |
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| Core clock speed | 1046 MHz | 835 MHz |
| Floating-point performance | 803.3 gflops | 729.6 gflops |
| Manufacturing process technology | 28 nm | 28 nm |
| Pipelines | 384 | 384 |
| Texture fill rate | 16.74 GTexel / s | 30.4 billion / sec |
| Thermal Design Power (TDP) | 49 Watt | 50 Watt |
| Boost clock speed | 950 MHz | |
| CUDA cores | 384 | |
| Transistor count | 1,270 million | |
Video outputs and ports |
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| Display Connectors | 1x DVI, 1x HDMI, 1x VGA | No outputs |
| HDCP | ||
| HDMI | ||
| Maximum VGA resolution | Up to 2048x1536 | |
Compatibility, dimensions and requirements |
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| Interface | PCIe 2.0 x8 | MXM-B (3.0) |
| Length | 145 mm | |
| Supplementary power connectors | None | |
| Bus support | PCI Express 2.0, PCI Express 3.0 | |
| Laptop size | large | |
| SLI options | 2-way | |
API support |
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| DirectX | 12.0 (11_0) | 12 API |
| OpenGL | 4.6 | 4.5 |
| OpenCL | 1.1 | |
Memory |
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| Maximum RAM amount | 1 GB | 1 GB |
| Memory bandwidth | 40.06 GB / s | 64.0 GB / s |
| Memory bus width | 64 Bit | 128bit |
| Memory clock speed | 5008 MHz | 2000 MHz |
| Memory type | GDDR5 | GDDR5 |
| Shared memory | 0 | |
Technologies |
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| 3D Vision | ||
| 3D Vision / 3DTV Play | ||
| Adaptive VSync | ||
| CUDA | ||
| DirectX 11 | DirectX 11 | |
| FXAA | ||
| SLI | ||
| TXAA | ||
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