NVIDIA GeForce GT 645 OEM vs AMD Radeon HD 7770 GHz Edition
Comparative analysis of NVIDIA GeForce GT 645 OEM and AMD Radeon HD 7770 GHz Edition 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: PassMark - G2D Mark, PassMark - G3D Mark, GFXBench 4.0 - T-Rex (Frames), GFXBench 4.0 - T-Rex (Fps), Geekbench - OpenCL, 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 - Car Chase Offscreen (Fps), GFXBench 4.0 - Manhattan (Fps), 3DMark Fire Strike - Graphics Score.
Differences
Reasons to consider the NVIDIA GeForce GT 645 OEM
- Videocard is newer: launch date 2 month(s) later
- Around 23% lower typical power consumption: 102 Watt vs 125 Watt
- 3.4x more memory clock speed: 3828 MHz vs 1125 MHz
| Launch date | 24 April 2012 vs 15 February 2012 |
| Thermal Design Power (TDP) | 102 Watt vs 125 Watt |
| Memory clock speed | 3828 MHz vs 1125 MHz |
Reasons to consider the AMD Radeon HD 7770 GHz Edition
- Around 8% higher texture fill rate: 40 GTexel / s vs 37.2 GTexel / s
- 2.2x more pipelines: 640 vs 288
- Around 43% better floating-point performance: 1,280 gflops vs 894.0 gflops
- A newer manufacturing process allows for a more powerful, yet cooler running videocard: 28 nm vs 40 nm
- Around 4% better performance in PassMark - G2D Mark: 461 vs 443
- Around 8% better performance in PassMark - G3D Mark: 2172 vs 2006
- 7.6x better performance in GFXBench 4.0 - T-Rex (Frames): 14630 vs 1914
- 7.6x better performance in GFXBench 4.0 - T-Rex (Fps): 14630 vs 1914
| Specifications (specs) | |
| Texture fill rate | 40 GTexel / s vs 37.2 GTexel / s |
| Pipelines | 640 vs 288 |
| Floating-point performance | 1,280 gflops vs 894.0 gflops |
| Manufacturing process technology | 28 nm vs 40 nm |
| Benchmarks | |
| PassMark - G2D Mark | 461 vs 443 |
| PassMark - G3D Mark | 2172 vs 2006 |
| GFXBench 4.0 - T-Rex (Frames) | 14630 vs 1914 |
| GFXBench 4.0 - T-Rex (Fps) | 14630 vs 1914 |
Compare benchmarks
GPU 1: NVIDIA GeForce GT 645 OEM
GPU 2: AMD Radeon HD 7770 GHz Edition
| PassMark - G2D Mark |
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| PassMark - G3D Mark |
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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 GT 645 OEM | AMD Radeon HD 7770 GHz Edition |
|---|---|---|
| PassMark - G2D Mark | 443 | 461 |
| PassMark - G3D Mark | 2006 | 2172 |
| GFXBench 4.0 - T-Rex (Frames) | 1914 | 14630 |
| GFXBench 4.0 - T-Rex (Fps) | 1914 | 14630 |
| Geekbench - OpenCL | 14263 | |
| CompuBench 1.5 Desktop - Face Detection (mPixels/s) | 33.836 | |
| CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s) | 506.712 | |
| CompuBench 1.5 Desktop - T-Rex (Frames/s) | 3.01 | |
| CompuBench 1.5 Desktop - Video Composition (Frames/s) | 49.787 | |
| CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s) | 153.657 | |
| GFXBench 4.0 - Car Chase Offscreen (Frames) | 3707 | |
| GFXBench 4.0 - Manhattan (Frames) | 4524 | |
| GFXBench 4.0 - Car Chase Offscreen (Fps) | 3707 | |
| GFXBench 4.0 - Manhattan (Fps) | 4524 | |
| 3DMark Fire Strike - Graphics Score | 711 |
Compare specifications (specs)
| NVIDIA GeForce GT 645 OEM | AMD Radeon HD 7770 GHz Edition | |
|---|---|---|
Essentials |
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| Architecture | Fermi 2.0 | GCN 1.0 |
| Code name | GF114 | Cape Verde |
| Launch date | 24 April 2012 | 15 February 2012 |
| Place in performance rating | 569 | 570 |
| Type | Desktop | Desktop |
| Design | AMD Radeon HD 7000 Series | |
| Launch price (MSRP) | $159 | |
Technical info |
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| Core clock speed | 776 MHz | |
| Floating-point performance | 894.0 gflops | 1,280 gflops |
| Manufacturing process technology | 40 nm | 28 nm |
| Pipelines | 288 | 640 |
| Texture fill rate | 37.2 GTexel / s | 40 GTexel / s |
| Thermal Design Power (TDP) | 102 Watt | 125 Watt |
| Transistor count | 1,950 million | 1,500 million |
| Boost clock speed | 1000 MHz | |
| Stream Processors | 640 | |
Video outputs and ports |
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| Display Connectors | 2x DVI, 1x mini-HDMI | 1x DVI, 1x HDMI, 2x mini-DisplayPort |
| DisplayPort support | ||
| Dual-link DVI support | ||
| Eyefinity | ||
| HDMI | ||
| VGA | ||
Compatibility, dimensions and requirements |
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| Interface | PCIe 2.0 x16 | PCIe 3.0 x16 |
| Length | 210 mm | 210 mm |
| Bus support | PCIe 2.1 x16 | |
| Supplementary power connectors | 1x 6-pin | |
API support |
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| DirectX | 12.0 (11_0) | 11 |
| OpenGL | 4.6 | 4.5 |
Memory |
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| Maximum RAM amount | 1 GB | 1 GB |
| Memory bandwidth | 91.9 GB / s | 72 GB/s |
| Memory bus width | 192 Bit | 128 Bit |
| Memory clock speed | 3828 MHz | 1125 MHz |
| Memory type | GDDR5 | GDDR5 |
Technologies |
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| AMD Eyefinity | ||
| CrossFire | ||
| FreeSync | ||
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