NVIDIA GeForce 840A vs NVIDIA GeForce GTX 745 OEM
Comparative analysis of NVIDIA GeForce 840A and NVIDIA GeForce GTX 745 OEM 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: PassMark - G3D Mark, PassMark - G2D Mark, Geekbench - OpenCL, GFXBench 4.0 - Car Chase Offscreen (Frames), GFXBench 4.0 - Car Chase Offscreen (Fps), GFXBench 4.0 - Manhattan (Frames), GFXBench 4.0 - Manhattan (Fps), GFXBench 4.0 - T-Rex (Frames), GFXBench 4.0 - T-Rex (Fps), 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), 3DMark Fire Strike - Graphics Score.
Differences
Reasons to consider the NVIDIA GeForce 840A
- Around 9% better floating-point performance: 863.2 gflops vs 793.3 gflops
- Around 67% lower typical power consumption: 33 Watt vs 55 Watt
- Around 11% higher memory clock speed: 2002 MHz vs 1800 MHz
- Around 28% better performance in GFXBench 4.0 - Manhattan (Frames): 2314 vs 1813
- Around 28% better performance in GFXBench 4.0 - Manhattan (Fps): 2314 vs 1813
| Specifications (specs) | |
| Floating-point performance | 863.2 gflops vs 793.3 gflops |
| Thermal Design Power (TDP) | 33 Watt vs 55 Watt |
| Memory clock speed | 2002 MHz vs 1800 MHz |
| Benchmarks | |
| GFXBench 4.0 - Manhattan (Frames) | 2314 vs 1813 |
| GFXBench 4.0 - Manhattan (Fps) | 2314 vs 1813 |
Reasons to consider the NVIDIA GeForce GTX 745 OEM
- Around 38% higher texture fill rate: 24.79 GTexel / s vs 17.98 GTexel / s
- 4x more maximum memory size: 4 GB vs 1 GB
- Around 90% better performance in PassMark - G3D Mark: 2137 vs 1123
- 2.1x better performance in PassMark - G2D Mark: 472 vs 221
- Around 9% better performance in Geekbench - OpenCL: 6120 vs 5596
- Around 33% better performance in GFXBench 4.0 - Car Chase Offscreen (Frames): 2918 vs 2188
- Around 33% better performance in GFXBench 4.0 - Car Chase Offscreen (Fps): 2918 vs 2188
- Around 6% better performance in GFXBench 4.0 - T-Rex (Frames): 3309 vs 3117
- Around 6% better performance in GFXBench 4.0 - T-Rex (Fps): 3309 vs 3117
| Specifications (specs) | |
| Core clock speed | 1033 MHz vs 1029 MHz |
| Texture fill rate | 24.79 GTexel / s vs 17.98 GTexel / s |
| Maximum memory size | 4 GB vs 1 GB |
| Benchmarks | |
| PassMark - G3D Mark | 2137 vs 1123 |
| PassMark - G2D Mark | 472 vs 221 |
| Geekbench - OpenCL | 6120 vs 5596 |
| GFXBench 4.0 - Car Chase Offscreen (Frames) | 2918 vs 2188 |
| GFXBench 4.0 - Car Chase Offscreen (Fps) | 2918 vs 2188 |
| GFXBench 4.0 - T-Rex (Frames) | 3309 vs 3117 |
| GFXBench 4.0 - T-Rex (Fps) | 3309 vs 3117 |
Compare benchmarks
GPU 1: NVIDIA GeForce 840A
GPU 2: NVIDIA GeForce GTX 745 OEM
| PassMark - G3D Mark |
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| PassMark - G2D Mark |
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| Geekbench - OpenCL |
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| GFXBench 4.0 - Car Chase Offscreen (Frames) |
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| GFXBench 4.0 - Car Chase Offscreen (Fps) |
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| GFXBench 4.0 - Manhattan (Frames) |
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| GFXBench 4.0 - Manhattan (Fps) |
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| GFXBench 4.0 - T-Rex (Frames) |
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| GFXBench 4.0 - T-Rex (Fps) |
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| Name | NVIDIA GeForce 840A | NVIDIA GeForce GTX 745 OEM |
|---|---|---|
| PassMark - G3D Mark | 1123 | 2137 |
| PassMark - G2D Mark | 221 | 472 |
| Geekbench - OpenCL | 5596 | 6120 |
| GFXBench 4.0 - Car Chase Offscreen (Frames) | 2188 | 2918 |
| GFXBench 4.0 - Car Chase Offscreen (Fps) | 2188 | 2918 |
| GFXBench 4.0 - Manhattan (Frames) | 2314 | 1813 |
| GFXBench 4.0 - Manhattan (Fps) | 2314 | 1813 |
| GFXBench 4.0 - T-Rex (Frames) | 3117 | 3309 |
| GFXBench 4.0 - T-Rex (Fps) | 3117 | 3309 |
| CompuBench 1.5 Desktop - Face Detection (mPixels/s) | 24.117 | |
| CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s) | 335.835 | |
| CompuBench 1.5 Desktop - T-Rex (Frames/s) | 1.651 | |
| CompuBench 1.5 Desktop - Video Composition (Frames/s) | 27.096 | |
| CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s) | 97.126 | |
| 3DMark Fire Strike - Graphics Score | 655 |
Compare specifications (specs)
| NVIDIA GeForce 840A | NVIDIA GeForce GTX 745 OEM | |
|---|---|---|
Essentials |
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| Architecture | Maxwell | Maxwell |
| Code name | GM108 | GM107 |
| Launch date | 17 March 2014 | 18 February 2014 |
| Place in performance rating | 1003 | 1004 |
| Type | Desktop | Desktop |
Technical info |
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| Boost clock speed | 1124 MHz | |
| Core clock speed | 1029 MHz | 1033 MHz |
| Floating-point performance | 863.2 gflops | 793.3 gflops |
| Manufacturing process technology | 28 nm | 28 nm |
| Pipelines | 384 | 384 |
| Texture fill rate | 17.98 GTexel / s | 24.79 GTexel / s |
| Thermal Design Power (TDP) | 33 Watt | 55 Watt |
| Transistor count | 1,870 million | |
Video outputs and ports |
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| Display Connectors | No outputs | 1x DVI, 1x HDMI, 1x VGA |
Compatibility, dimensions and requirements |
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| Interface | PCIe 3.0 x8 | PCIe 3.0 x16 |
| Length | 145 mm | |
| Supplementary power connectors | None | |
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 | 1 GB | 4 GB |
| Memory bandwidth | 16.02 GB / s | 28.8 GB / s |
| Memory bus width | 64 Bit | 128 Bit |
| Memory clock speed | 2002 MHz | 1800 MHz |
| Memory type | DDR3 | DDR3 |
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