GPU Comparison
Side-by-side comparison of specifications and performance
Performance Comparison
NVIDIA GeForce GT 640
50%
50%
AMD Radeon HD 7770 GHz Edition
532%
532%
AMD Radeon HD 7770 GHz Edition is approximately 482% faster
Technical Specifications
| Specification | NVIDIA GeForce GT 640 | AMD Radeon HD 7770 GHz Edition |
|---|---|---|
| Graphics ProcessorDifferent | GK107 | Cape Verde |
| CoresDifferent | 384 | 640 |
| TMUsDifferent | 32 | 40 |
| ROPs | 16 | 16 |
| Memory SizeDifferent | 2 GB | 1024 MB |
| Memory TypeDifferent | DDR3 | GDDR5 |
| Bus Width | 128 bit | 128 bit |
Graphics Processor
| Feature | NVIDIA GeForce GT 640 | AMD Radeon HD 7770 GHz Edition |
|---|---|---|
| GPU NameDifferent | GK107 | Cape Verde |
| GPU VariantDifferent | GK107-300-A2 | Cape Verde XT(215-0825117) |
| ArchitectureDifferent | Kepler | GCN 1.0 |
| Foundry | TSMC | TSMC |
| Process Size | 28 nm | 28 nm |
| TransistorsDifferent | 1,270 million | 1,500 million |
| DensityDifferent | 10.8M / mm² | 12.2M / mm² |
| Die SizeDifferent | 118 mm² | 123 mm² |
| Chip PackageDifferent | BGA-908 | FCBGA-962 |
Graphics Card
| Feature | NVIDIA GeForce GT 640 | AMD Radeon HD 7770 GHz Edition |
|---|---|---|
| Release DateDifferent | Jun 5th, 2012 | Feb 15th, 2012 |
| GenerationDifferent | GeForce 600 | Southern Islands(HD 7700) |
| PredecessorDifferent | GeForce 500 | Northern Islands |
| SuccessorDifferent | GeForce 700 | Sea Islands |
| Production | End-of-life | End-of-life |
| Launch PriceDifferent | 99 USD | 159 USD |
| Bus Interface | PCIe 3.0 x16 | PCIe 3.0 x16 |
| ReviewsDifferent | 8 in our database | 97 in our database |
Clock Speeds
| Feature | NVIDIA GeForce GT 640 | AMD Radeon HD 7770 GHz Edition |
|---|---|---|
| GPU ClockDifferent | 902 MHz | 1000 MHz |
| Memory ClockDifferent | 891 MHz1782 Mbps effective | 1125 MHz4.5 Gbps effective |
Memory
| Feature | NVIDIA GeForce GT 640 | AMD Radeon HD 7770 GHz Edition |
|---|---|---|
| Memory SizeDifferent | 2 GB | 1024 MB |
| Memory TypeDifferent | DDR3 | GDDR5 |
| Memory Bus | 128 bit | 128 bit |
| BandwidthDifferent | 28.51 GB/s | 72.00 GB/s |
Render Config
| Feature | NVIDIA GeForce GT 640 | AMD Radeon HD 7770 GHz Edition |
|---|---|---|
| Shading UnitsDifferent | 384 | 640 |
| TMUsDifferent | 32 | 40 |
| ROPs | 16 | 16 |
| SMX CountDifferent | 2 | N/A |
| L1 CacheDifferent | 16 KB (per SMX) | 16 KB (per CU) |
| L2 Cache | 256 KB | 256 KB |
| Compute UnitsDifferent | N/A | 10 |
Theoretical Performance
| Feature | NVIDIA GeForce GT 640 | AMD Radeon HD 7770 GHz Edition |
|---|---|---|
| Pixel RateDifferent | 7.216 GPixel/s | 16.00 GPixel/s |
| Texture RateDifferent | 28.86 GTexel/s | 40.00 GTexel/s |
| FP32 (float)Different | 692.7 GFLOPS | 1,280.0 GFLOPS |
| FP64 (double)Different | 28.86 GFLOPS (1:24) | 80.00 GFLOPS (1:16) |
Board Design
| Feature | NVIDIA GeForce GT 640 | AMD Radeon HD 7770 GHz Edition |
|---|---|---|
| Slot WidthDifferent | Single-slot | Dual-slot |
| LengthDifferent | 145 mm5.7 inches | 210 mm8.3 inches |
| TDPDifferent | 65 W | 80 W |
| Suggested PSU | 250 W | 250 W |
| OutputsDifferent | 1x DVI1x HDMI 1.4a1x DisplayPort 1.2 | 1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2 |
| Power ConnectorsDifferent | None | 1x 6-pin |
| Board NumberDifferent | P2011 SKU 0 | 109-C44157-00C, C468 |
Graphics Features
| Feature | NVIDIA GeForce GT 640 | AMD Radeon HD 7770 GHz Edition |
|---|---|---|
| DirectXDifferent | 12 (11_0) | 12 (11_1) |
| OpenGL | 4.6 | 4.6 |
| OpenCLDifferent | 3.0 | 2.1 (1.2) |
| VulkanDifferent | 1.2.175 | 1.2.170 |
| CUDADifferent | 3.0 | N/A |
| Shader Model | 6.5 (5.1) | 6.5 (5.1) |
Comparison Summary
7
Specifications Compared
8
Feature Categories
47
Detailed Features
More Comparisons with NVIDIA GeForce GT 640
Compare NVIDIA GeForce GT 640 with other GPUs of similar performance
NVIDIA GeForce GT 640 vs Radeon HD 4770
Radeon HD 4770 Performance119%
Radeon HD 4770 is 19% faster than NVIDIA GeForce GT 640
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NVIDIA GeForce GT 640 vs Radeon HD 4830
Radeon HD 4830 Performance111%
Radeon HD 4830 is 11% faster than NVIDIA GeForce GT 640
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NVIDIA GeForce GT 640 vs Radeon HD 6670
Radeon HD 6670 Performance108%
Radeon HD 6670 is 8% faster than NVIDIA GeForce GT 640
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NVIDIA GeForce GT 640 vs GeForce 9800 GT
GeForce 9800 GT Performance103%
GeForce 9800 GT is 3% faster than NVIDIA GeForce GT 640
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NVIDIA GeForce GT 640 vs GeForce GT 640
GeForce GT 640 Performance100%
GeForce GT 640 is 0% slower than NVIDIA GeForce GT 640
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NVIDIA GeForce GT 640 vs Radeon HD 5670
Radeon HD 5670 Performance93%
Radeon HD 5670 is 7% slower than NVIDIA GeForce GT 640
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More Comparisons with AMD Radeon HD 7770 GHz Edition
Compare AMD Radeon HD 7770 GHz Edition with other GPUs of similar performance
AMD Radeon HD 7770 GHz Edition vs GeForce GTX 650 Ti
GeForce GTX 650 Ti Performance119%
GeForce GTX 650 Ti is 19% faster than AMD Radeon HD 7770 GHz Edition
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AMD Radeon HD 7770 GHz Edition vs Radeon HD 5850
Radeon HD 5850 Performance117%
Radeon HD 5850 is 17% faster than AMD Radeon HD 7770 GHz Edition
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AMD Radeon HD 7770 GHz Edition vs GeForce GTX 285
GeForce GTX 285 Performance109%
GeForce GTX 285 is 9% faster than AMD Radeon HD 7770 GHz Edition
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AMD Radeon HD 7770 GHz Edition vs Radeon HD 6850
Radeon HD 6850 Performance107%
Radeon HD 6850 is 7% faster than AMD Radeon HD 7770 GHz Edition
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AMD Radeon HD 7770 GHz Edition vs GeForce GTX 280
GeForce GTX 280 Performance100%
GeForce GTX 280 is 0% slower than AMD Radeon HD 7770 GHz Edition
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AMD Radeon HD 7770 GHz Edition vs Radeon HD 7770 GHz Edition
Radeon HD 7770 GHz Edition Performance100%
Radeon HD 7770 GHz Edition is 0% slower than AMD Radeon HD 7770 GHz Edition
Compare Detailed Specs