GPU Comparison
Side-by-side comparison of specifications and performance
Performance Comparison
NVIDIA GeForce GT 640
31%
31%
AMD Radeon HD 6970
327%
327%
AMD Radeon HD 6970 is approximately 296% faster
Technical Specifications
| Specification | NVIDIA GeForce GT 640 | AMD Radeon HD 6970 |
|---|---|---|
| Graphics ProcessorDifferent | GK107 | Cayman |
| CoresDifferent | 384 | 1536 |
| TMUsDifferent | 32 | 96 |
| ROPsDifferent | 16 | 32 |
| Memory Size | 2 GB | 2 GB |
| Memory TypeDifferent | DDR3 | GDDR5 |
| Bus WidthDifferent | 128 bit | 256 bit |
Graphics Processor
| Feature | NVIDIA GeForce GT 640 | AMD Radeon HD 6970 |
|---|---|---|
| GPU NameDifferent | GK107 | Cayman |
| GPU VariantDifferent | GK107-300-A2 | Cayman XT(215-0807007) |
| ArchitectureDifferent | Kepler | TeraScale 3 |
| Foundry | TSMC | TSMC |
| Process SizeDifferent | 28 nm | 40 nm |
| TransistorsDifferent | 1,270 million | 2,640 million |
| DensityDifferent | 10.8M / mm² | 6.8M / mm² |
| Die SizeDifferent | 118 mm² | 389 mm² |
| Chip PackageDifferent | BGA-908 | N/A |
Graphics Card
| Feature | NVIDIA GeForce GT 640 | AMD Radeon HD 6970 |
|---|---|---|
| Release DateDifferent | Jun 5th, 2012 | Dec 14th, 2010 |
| GenerationDifferent | GeForce 600 | Northern Islands(HD 6900) |
| PredecessorDifferent | GeForce 500 | Evergreen |
| SuccessorDifferent | GeForce 700 | Southern Islands |
| Production | End-of-life | End-of-life |
| Launch PriceDifferent | 99 USD | 369 USD |
| Bus InterfaceDifferent | PCIe 3.0 x16 | PCIe 2.0 x16 |
| ReviewsDifferent | 8 in our database | 80 in our database |
Clock Speeds
| Feature | NVIDIA GeForce GT 640 | AMD Radeon HD 6970 |
|---|---|---|
| GPU ClockDifferent | 902 MHz | 880 MHz |
| Memory ClockDifferent | 891 MHz1782 Mbps effective | 1375 MHz5.5 Gbps effective |
Memory
| Feature | NVIDIA GeForce GT 640 | AMD Radeon HD 6970 |
|---|---|---|
| Memory Size | 2 GB | 2 GB |
| Memory TypeDifferent | DDR3 | GDDR5 |
| Memory BusDifferent | 128 bit | 256 bit |
| BandwidthDifferent | 28.51 GB/s | 176.0 GB/s |
Render Config
| Feature | NVIDIA GeForce GT 640 | AMD Radeon HD 6970 |
|---|---|---|
| Shading UnitsDifferent | 384 | 1536 |
| TMUsDifferent | 32 | 96 |
| ROPsDifferent | 16 | 32 |
| SMX CountDifferent | 2 | N/A |
| L1 CacheDifferent | 16 KB (per SMX) | 8 KB (per CU) |
| L2 CacheDifferent | 256 KB | 512 KB |
| Compute UnitsDifferent | N/A | 24 |
Theoretical Performance
| Feature | NVIDIA GeForce GT 640 | AMD Radeon HD 6970 |
|---|---|---|
| Pixel RateDifferent | 7.216 GPixel/s | 28.16 GPixel/s |
| Texture RateDifferent | 28.86 GTexel/s | 84.48 GTexel/s |
| FP32 (float)Different | 692.7 GFLOPS | 2.703 TFLOPS |
| FP64 (double)Different | 28.86 GFLOPS (1:24) | 675.8 GFLOPS (1:4) |
Board Design
| Feature | NVIDIA GeForce GT 640 | AMD Radeon HD 6970 |
|---|---|---|
| Slot WidthDifferent | Single-slot | Dual-slot |
| LengthDifferent | 145 mm5.7 inches | 286 mm11.3 inches |
| TDPDifferent | 65 W | 250 W |
| Suggested PSUDifferent | 250 W | 600 W |
| OutputsDifferent | 1x DVI1x HDMI 1.4a1x DisplayPort 1.2 | 2x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2 |
| Power ConnectorsDifferent | None | 1x 6-pin + 1x 8-pin |
| Board NumberDifferent | P2011 SKU 0 | 109-C20047-00 |
| HeightDifferent | N/A | 126 mm5 inches |
| WidthDifferent | N/A | 42 mm1.7 inches |
Graphics Features
| Feature | NVIDIA GeForce GT 640 | AMD Radeon HD 6970 |
|---|---|---|
| DirectXDifferent | 12 (11_0) | 11.2 (11_0) |
| OpenGLDifferent | 4.6 | 4.4 |
| OpenCLDifferent | 3.0 | 1.2 |
| VulkanDifferent | 1.2.175 | N/A |
| CUDADifferent | 3.0 | N/A |
| Shader ModelDifferent | 6.5 (5.1) | 5.0 |
Comparison Summary
7
Specifications Compared
8
Feature Categories
49
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
Compare Detailed Specs
NVIDIA GeForce GT 640 vs Radeon HD 4830
Radeon HD 4830 Performance111%
Radeon HD 4830 is 11% faster than NVIDIA GeForce GT 640
Compare Detailed Specs
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
Compare Detailed Specs
NVIDIA GeForce GT 640 vs GeForce GT 640
GeForce GT 640 Performance100%
GeForce GT 640 is 0% slower than NVIDIA GeForce GT 640
Compare Detailed Specs
NVIDIA GeForce GT 640 vs Radeon HD 5670
Radeon HD 5670 Performance93%
Radeon HD 5670 is 7% slower than NVIDIA GeForce GT 640
Compare Detailed Specs
More Comparisons with AMD Radeon HD 6970
Compare AMD Radeon HD 6970 with other GPUs of similar performance
AMD Radeon HD 6970 vs GeForce GTX 1050
GeForce GTX 1050 Performance119%
GeForce GTX 1050 is 19% faster than AMD Radeon HD 6970
Compare Detailed Specs
AMD Radeon HD 6970 vs GeForce GTX 760
GeForce GTX 760 Performance118%
GeForce GTX 760 is 18% faster than AMD Radeon HD 6970
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AMD Radeon HD 6970 vs GeForce GTX 580
GeForce GTX 580 Performance118%
GeForce GTX 580 is 18% faster than AMD Radeon HD 6970
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AMD Radeon HD 6970 vs GeForce GTX 660 Ti
GeForce GTX 660 Ti Performance118%
GeForce GTX 660 Ti is 18% faster than AMD Radeon HD 6970
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AMD Radeon HD 6970 vs Radeon R9 270X
Radeon R9 270X Performance116%
Radeon R9 270X is 16% faster than AMD Radeon HD 6970
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AMD Radeon HD 6970 vs GeForce GTX 950
GeForce GTX 950 Performance113%
GeForce GTX 950 is 13% faster than AMD Radeon HD 6970
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