NVIDIA GeForce GT 640 Rev. 2 vs NVIDIA GeForce GT 745M
Comparative analysis of NVIDIA GeForce GT 640 Rev. 2 and NVIDIA GeForce GT 745M 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 month(s) later
- Around 25% higher core clock speed: 1046 MHz vs 837 MHz
- Around 25% better floating-point performance: 803.3 gflops vs 642.8 gflops
- 2.8x more memory clock speed: 5008 MHz vs 1800 MHz
- Around 7% better performance in CompuBench 1.5 Desktop - Video Composition (Frames/s): 8.717 vs 8.184
- Around 2% better performance in GFXBench 4.0 - Car Chase Offscreen (Frames): 2309 vs 2255
- Around 7% better performance in GFXBench 4.0 - Manhattan (Frames): 3354 vs 3133
- Around 2% better performance in GFXBench 4.0 - Car Chase Offscreen (Fps): 2309 vs 2255
- Around 7% better performance in GFXBench 4.0 - Manhattan (Fps): 3354 vs 3133
| Specifications (specs) | |
| Launch date | 29 May 2013 vs 1 April 2013 |
| Core clock speed | 1046 MHz vs 837 MHz |
| Floating-point performance | 803.3 gflops vs 642.8 gflops |
| Memory clock speed | 5008 MHz vs 1800 MHz |
| Benchmarks | |
| CompuBench 1.5 Desktop - Video Composition (Frames/s) | 8.717 vs 8.184 |
| GFXBench 4.0 - Car Chase Offscreen (Frames) | 2309 vs 2255 |
| GFXBench 4.0 - Manhattan (Frames) | 3354 vs 3133 |
| GFXBench 4.0 - Car Chase Offscreen (Fps) | 2309 vs 2255 |
| GFXBench 4.0 - Manhattan (Fps) | 3354 vs 3133 |
Reasons to consider the NVIDIA GeForce GT 745M
- Around 60% higher texture fill rate: 26.78 GTexel / s vs 16.74 GTexel / s
- Around 9% lower typical power consumption: 45 Watt vs 49 Watt
- 2x more maximum memory size: 2 GB vs 1 GB
- Around 17% better performance in CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s): 202.905 vs 173.537
- 20.6x better performance in CompuBench 1.5 Desktop - T-Rex (Frames/s): 0.66 vs 0.032
- Around 85% better performance in CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s): 19.323 vs 10.454
- Around 4% better performance in GFXBench 4.0 - T-Rex (Frames): 3352 vs 3220
- Around 4% better performance in GFXBench 4.0 - T-Rex (Fps): 3352 vs 3220
| Specifications (specs) | |
| Texture fill rate | 26.78 GTexel / s vs 16.74 GTexel / s |
| Thermal Design Power (TDP) | 45 Watt vs 49 Watt |
| Maximum memory size | 2 GB vs 1 GB |
| Benchmarks | |
| CompuBench 1.5 Desktop - Face Detection (mPixels/s) | 10.489 vs 10.475 |
| CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s) | 202.905 vs 173.537 |
| CompuBench 1.5 Desktop - T-Rex (Frames/s) | 0.66 vs 0.032 |
| CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s) | 19.323 vs 10.454 |
| GFXBench 4.0 - T-Rex (Frames) | 3352 vs 3220 |
| GFXBench 4.0 - T-Rex (Fps) | 3352 vs 3220 |
Compare benchmarks
GPU 1: NVIDIA GeForce GT 640 Rev. 2
GPU 2: NVIDIA GeForce GT 745M
| 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 GT 745M |
|---|---|---|
| CompuBench 1.5 Desktop - Face Detection (mPixels/s) | 10.475 | 10.489 |
| CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s) | 173.537 | 202.905 |
| CompuBench 1.5 Desktop - T-Rex (Frames/s) | 0.032 | 0.66 |
| CompuBench 1.5 Desktop - Video Composition (Frames/s) | 8.717 | 8.184 |
| CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s) | 10.454 | 19.323 |
| GFXBench 4.0 - Car Chase Offscreen (Frames) | 2309 | 2255 |
| GFXBench 4.0 - Manhattan (Frames) | 3354 | 3133 |
| GFXBench 4.0 - T-Rex (Frames) | 3220 | 3352 |
| GFXBench 4.0 - Car Chase Offscreen (Fps) | 2309 | 2255 |
| GFXBench 4.0 - Manhattan (Fps) | 3354 | 3133 |
| GFXBench 4.0 - T-Rex (Fps) | 3220 | 3352 |
| PassMark - G3D Mark | 1095 | |
| PassMark - G2D Mark | 180 | |
| Geekbench - OpenCL | 3468 | |
| 3DMark Fire Strike - Graphics Score | 0 |
Compare specifications (specs)
| NVIDIA GeForce GT 640 Rev. 2 | NVIDIA GeForce GT 745M | |
|---|---|---|
Essentials |
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| Architecture | Kepler 2.0 | Kepler |
| Code name | GK208 | GK107 |
| Launch date | 29 May 2013 | 1 April 2013 |
| Launch price (MSRP) | $89 | |
| Place in performance rating | 1272 | 1274 |
| Type | Desktop | Laptop |
Technical info |
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| Core clock speed | 1046 MHz | 837 MHz |
| Floating-point performance | 803.3 gflops | 642.8 gflops |
| Manufacturing process technology | 28 nm | 28 nm |
| Pipelines | 384 | 384 |
| Texture fill rate | 16.74 GTexel / s | 26.78 GTexel / s |
| Thermal Design Power (TDP) | 49 Watt | 45 Watt |
| Transistor count | 1,270 million | |
Video outputs and ports |
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| Display Connectors | 1x DVI, 1x HDMI, 1x VGA | No outputs |
| 7.1 channel HD audio on HDMI | ||
| DisplayPort Multimode (DP++) support | Up to 3840x2160 | |
| eDP 1.2 signal support | Up to 3840x2160 | |
| HDCP content protection | ||
| HDMI | ||
| LVDS signal support | Up to 1920x1200 | |
| TrueHD and DTS-HD audio bitstreaming | ||
| VGA аnalog display support | Up to 2048x1536 | |
Compatibility, dimensions and requirements |
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| Interface | PCIe 2.0 x8 | PCIe 3.0 x16 |
| Length | 145 mm | |
| Supplementary power connectors | None | |
| Bus support | PCI Express 3.0 | |
| Laptop size | medium sized | |
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 | 2 GB |
| Memory bandwidth | 40.06 GB / s | 28.8 GB / s |
| Memory bus width | 64 Bit | 128 Bit |
| Memory clock speed | 5008 MHz | 1800 MHz |
| Memory type | GDDR5 | DDR3, GDDR5 |
| Shared memory | 0 | |
| Standard memory configuration | DDR3 / GDDR5 | |
Technologies |
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| 3D Vision | ||
| 3D Vision / 3DTV Play | ||
| Blu-Ray 3D Support | ||
| CUDA | ||
| Direct Compute | ||
| FXAA | ||
| H.264, VC1, MPEG2 1080p video decoder | ||
| Optimus | ||
Navigation
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