GPU Comparison
Side-by-side comparison of specifications and performance
Performance Comparison
NVIDIA GeForce GT 640
93%
93%
AMD Radeon HD 6670
108%
108%
AMD Radeon HD 6670 is approximately 15% faster
Technical Specifications
| Specification | NVIDIA GeForce GT 640 | AMD Radeon HD 6670 |
|---|---|---|
| Graphics ProcessorDifferent | GK107 | Turks |
| CoresDifferent | 384 | 480 |
| TMUsDifferent | 32 | 24 |
| ROPsDifferent | 16 | 8 |
| 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 6670 |
|---|---|---|
| GPU NameDifferent | GK107 | Turks |
| GPU VariantDifferent | GK107-300-A2 | Turks XT(215-0803000) |
| ArchitectureDifferent | Kepler | TeraScale 2 |
| Foundry | TSMC | TSMC |
| Process SizeDifferent | 28 nm | 40 nm |
| TransistorsDifferent | 1,270 million | 716 million |
| DensityDifferent | 10.8M / mm² | 6.1M / mm² |
| Die Size | 118 mm² | 118 mm² |
| Chip PackageDifferent | BGA-908 | FCBGA-962 |
Graphics Card
| Feature | NVIDIA GeForce GT 640 | AMD Radeon HD 6670 |
|---|---|---|
| Release DateDifferent | Jun 5th, 2012 | Apr 19th, 2011 |
| GenerationDifferent | GeForce 600 | Northern Islands(HD 6600) |
| PredecessorDifferent | GeForce 500 | Evergreen |
| SuccessorDifferent | GeForce 700 | Southern Islands |
| Production | End-of-life | End-of-life |
| Launch Price | 99 USD | 99 USD |
| Bus InterfaceDifferent | PCIe 3.0 x16 | PCIe 2.0 x16 |
| ReviewsDifferent | 8 in our database | 35 in our database |
Clock Speeds
| Feature | NVIDIA GeForce GT 640 | AMD Radeon HD 6670 |
|---|---|---|
| GPU ClockDifferent | 902 MHz | 800 MHz |
| Memory ClockDifferent | 891 MHz1782 Mbps effective | 1000 MHz4 Gbps effective |
Memory
| Feature | NVIDIA GeForce GT 640 | AMD Radeon HD 6670 |
|---|---|---|
| Memory SizeDifferent | 2 GB | 1024 MB |
| Memory TypeDifferent | DDR3 | GDDR5 |
| Memory Bus | 128 bit | 128 bit |
| BandwidthDifferent | 28.51 GB/s | 64.00 GB/s |
Render Config
| Feature | NVIDIA GeForce GT 640 | AMD Radeon HD 6670 |
|---|---|---|
| Shading UnitsDifferent | 384 | 480 |
| TMUsDifferent | 32 | 24 |
| ROPsDifferent | 16 | 8 |
| SMX CountDifferent | 2 | N/A |
| L1 CacheDifferent | 16 KB (per SMX) | 8 KB (per CU) |
| L2 Cache | 256 KB | 256 KB |
| Compute UnitsDifferent | N/A | 6 |
Theoretical Performance
| Feature | NVIDIA GeForce GT 640 | AMD Radeon HD 6670 |
|---|---|---|
| Pixel RateDifferent | 7.216 GPixel/s | 6.400 GPixel/s |
| Texture RateDifferent | 28.86 GTexel/s | 19.20 GTexel/s |
| FP32 (float)Different | 692.7 GFLOPS | 768.0 GFLOPS |
| FP64 (double)Different | 28.86 GFLOPS (1:24) | N/A |
Board Design
| Feature | NVIDIA GeForce GT 640 | AMD Radeon HD 6670 |
|---|---|---|
| Slot Width | Single-slot | Single-slot |
| LengthDifferent | 145 mm5.7 inches | 168 mm6.6 inches |
| TDPDifferent | 65 W | 66 W |
| Suggested PSU | 250 W | 250 W |
| OutputsDifferent | 1x DVI1x HDMI 1.4a1x DisplayPort 1.2 | 1x DVI1x HDMI 1.3a1x VGA |
| Power Connectors | None | None |
| Board NumberDifferent | P2011 SKU 0 | 109-C33437-00 |
Graphics Features
| Feature | NVIDIA GeForce GT 640 | AMD Radeon HD 6670 |
|---|---|---|
| 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
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
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
Compare Detailed Specs
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 6670
Compare AMD Radeon HD 6670 with other GPUs of similar performance
AMD Radeon HD 6670 vs GeForce GTS 250
GeForce GTS 250 Performance119%
GeForce GTS 250 is 19% faster than AMD Radeon HD 6670
Compare Detailed Specs
AMD Radeon HD 6670 vs Radeon HD 4850
Radeon HD 4850 Performance116%
Radeon HD 4850 is 16% faster than AMD Radeon HD 6670
Compare Detailed Specs
AMD Radeon HD 6670 vs Radeon HD 4770
Radeon HD 4770 Performance110%
Radeon HD 4770 is 10% faster than AMD Radeon HD 6670
Compare Detailed Specs
AMD Radeon HD 6670 vs Radeon HD 4830
Radeon HD 4830 Performance103%
Radeon HD 4830 is 3% faster than AMD Radeon HD 6670
Compare Detailed Specs
AMD Radeon HD 6670 vs Radeon HD 6670
Radeon HD 6670 Performance100%
Radeon HD 6670 is 0% slower than AMD Radeon HD 6670
Compare Detailed Specs
AMD Radeon HD 6670 vs GeForce 9800 GT
GeForce 9800 GT Performance96%
GeForce 9800 GT is 4% slower than AMD Radeon HD 6670
Compare Detailed Specs