NVIDIA GeForce GTX 660 Rev. 2 vs NVIDIA GeForce GT 640M Mac Edition
Comparative analysis of NVIDIA GeForce GTX 660 Rev. 2 and NVIDIA GeForce GT 640M Mac Edition videocards for all known characteristics in the following categories: Essentials, Technical info, Video outputs and ports, Compatibility, dimensions and requirements, API support, Memory. Benchmark videocards performance analysis: CompuBench 1.5 Desktop - Face Detection (mPixels/s), CompuBench 1.5 Desktop - T-Rex (Frames/s), CompuBench 1.5 Desktop - Ocean Surface Simulation (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).
Differences
Reasons to consider the NVIDIA GeForce GTX 660 Rev. 2
- Videocard is newer: launch date 1 year(s) 7 month(s) later
- Around 32% higher core clock speed: 980 MHz vs 745 MHz
- 3.5x more texture fill rate: 82.56 GTexel / s vs 23.84 GTexel / s
- 2.5x more pipelines: 960 vs 384
- 3.5x better floating-point performance: 1,981 gflops vs 572.2 gflops
- 4x more maximum memory size: 2 GB vs 512 MB
- Around 20% higher memory clock speed: 6008 MHz vs 5000 MHz
- 6x better performance in CompuBench 1.5 Desktop - Face Detection (mPixels/s): 39.216 vs 6.577
- 2.1x better performance in CompuBench 1.5 Desktop - T-Rex (Frames/s): 1.173 vs 0.559
Specifications (specs) | |
Launch date | 13 September 2014 vs 3 February 2013 |
Core clock speed | 980 MHz vs 745 MHz |
Texture fill rate | 82.56 GTexel / s vs 23.84 GTexel / s |
Pipelines | 960 vs 384 |
Floating-point performance | 1,981 gflops vs 572.2 gflops |
Maximum memory size | 2 GB vs 512 MB |
Memory clock speed | 6008 MHz vs 5000 MHz |
Benchmarks | |
CompuBench 1.5 Desktop - Face Detection (mPixels/s) | 39.216 vs 6.577 |
CompuBench 1.5 Desktop - T-Rex (Frames/s) | 1.173 vs 0.559 |
Reasons to consider the NVIDIA GeForce GT 640M Mac Edition
- 4.4x lower typical power consumption: 32 Watt vs 140 Watt
Thermal Design Power (TDP) | 32 Watt vs 140 Watt |
Compare benchmarks
GPU 1: NVIDIA GeForce GTX 660 Rev. 2
GPU 2: NVIDIA GeForce GT 640M Mac Edition
CompuBench 1.5 Desktop - Face Detection (mPixels/s) |
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CompuBench 1.5 Desktop - T-Rex (Frames/s) |
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Name | NVIDIA GeForce GTX 660 Rev. 2 | NVIDIA GeForce GT 640M Mac Edition |
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CompuBench 1.5 Desktop - Face Detection (mPixels/s) | 39.216 | 6.577 |
CompuBench 1.5 Desktop - T-Rex (Frames/s) | 1.173 | 0.559 |
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s) | 226.218 | |
CompuBench 1.5 Desktop - Video Composition (Frames/s) | 11.947 | |
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s) | 12.554 | |
GFXBench 4.0 - Car Chase Offscreen (Frames) | 1706 | |
GFXBench 4.0 - Manhattan (Frames) | 2983 | |
GFXBench 4.0 - T-Rex (Frames) | 5586 | |
GFXBench 4.0 - Car Chase Offscreen (Fps) | 28.9 | |
GFXBench 4.0 - Manhattan (Fps) | 48.1 | |
GFXBench 4.0 - T-Rex (Fps) | 99.8 |
Compare specifications (specs)
NVIDIA GeForce GTX 660 Rev. 2 | NVIDIA GeForce GT 640M Mac Edition | |
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Essentials |
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Architecture | Kepler | Kepler |
Code name | GK104 | GK107 |
Launch date | 13 September 2014 | 3 February 2013 |
Place in performance rating | 1513 | 1514 |
Type | Desktop | Desktop |
Technical info |
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Boost clock speed | 1032 MHz | |
Core clock speed | 980 MHz | 745 MHz |
Floating-point performance | 1,981 gflops | 572.2 gflops |
Manufacturing process technology | 28 nm | 28 nm |
Pipelines | 960 | 384 |
Texture fill rate | 82.56 GTexel / s | 23.84 GTexel / s |
Thermal Design Power (TDP) | 140 Watt | 32 Watt |
Transistor count | 3,540 million | 1,270 million |
Video outputs and ports |
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Display Connectors | 2x DVI, 1x HDMI, 1x DisplayPort | No outputs |
Compatibility, dimensions and requirements |
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Interface | PCIe 3.0 x16 | PCIe 3.0 x16 |
Length | 241 mm | |
Supplementary power connectors | 1x 6-pin | |
API support |
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DirectX | 12.0 (11_0) | 12.0 (11_0) |
OpenGL | 4.6 | 4.6 |
Memory |
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Maximum RAM amount | 2 GB | 512 MB |
Memory bandwidth | 144.2 GB / s | 40 GB / s |
Memory bus width | 192 Bit | 64 Bit |
Memory clock speed | 6008 MHz | 5000 MHz |
Memory type | GDDR5 | GDDR5 |