GPU Comparison
Side-by-side comparison of specifications and performance
Performance Comparison
NVIDIA GeForce GT 640
19%
19%
AMD Radeon HD 7970 GHz Edition
532%
532%
AMD Radeon HD 7970 GHz Edition is approximately 513% faster
Technical Specifications
| Specification | NVIDIA GeForce GT 640 | AMD Radeon HD 7970 GHz Edition |
|---|---|---|
| Graphics ProcessorDifferent | GK107 | Tahiti |
| CoresDifferent | 384 | 2048 |
| TMUsDifferent | 32 | 128 |
| ROPsDifferent | 16 | 32 |
| Memory SizeDifferent | 2 GB | 3 GB |
| Memory TypeDifferent | DDR3 | GDDR5 |
| Bus WidthDifferent | 128 bit | 384 bit |
Graphics Processor
| Feature | NVIDIA GeForce GT 640 | AMD Radeon HD 7970 GHz Edition |
|---|---|---|
| GPU NameDifferent | GK107 | Tahiti |
| GPU VariantDifferent | GK107-300-A2 | Tahiti XT2(215-0821065) |
| ArchitectureDifferent | Kepler | GCN 1.0 |
| Foundry | TSMC | TSMC |
| Process Size | 28 nm | 28 nm |
| TransistorsDifferent | 1,270 million | 4,313 million |
| DensityDifferent | 10.8M / mm² | 12.3M / mm² |
| Die SizeDifferent | 118 mm² | 352 mm² |
| Chip PackageDifferent | BGA-908 | N/A |
Graphics Card
| Feature | NVIDIA GeForce GT 640 | AMD Radeon HD 7970 GHz Edition |
|---|---|---|
| Release DateDifferent | Jun 5th, 2012 | Jun 22nd, 2012 |
| GenerationDifferent | GeForce 600 | Southern Islands(HD 7900) |
| PredecessorDifferent | GeForce 500 | Northern Islands |
| SuccessorDifferent | GeForce 700 | Sea Islands |
| Production | End-of-life | End-of-life |
| Launch PriceDifferent | 99 USD | 499 USD |
| Bus Interface | PCIe 3.0 x16 | PCIe 3.0 x16 |
| ReviewsDifferent | 8 in our database | 191 in our database |
Clock Speeds
| Feature | NVIDIA GeForce GT 640 | AMD Radeon HD 7970 GHz Edition |
|---|---|---|
| GPU ClockDifferent | 902 MHz | N/A |
| Memory ClockDifferent | 891 MHz1782 Mbps effective | 1500 MHz6 Gbps effective |
| Base ClockDifferent | N/A | 1000 MHz |
| Boost ClockDifferent | N/A | 1050 MHz |
Memory
| Feature | NVIDIA GeForce GT 640 | AMD Radeon HD 7970 GHz Edition |
|---|---|---|
| Memory SizeDifferent | 2 GB | 3 GB |
| Memory TypeDifferent | DDR3 | GDDR5 |
| Memory BusDifferent | 128 bit | 384 bit |
| BandwidthDifferent | 28.51 GB/s | 288.0 GB/s |
Render Config
| Feature | NVIDIA GeForce GT 640 | AMD Radeon HD 7970 GHz Edition |
|---|---|---|
| Shading UnitsDifferent | 384 | 2048 |
| TMUsDifferent | 32 | 128 |
| ROPsDifferent | 16 | 32 |
| SMX CountDifferent | 2 | N/A |
| L1 CacheDifferent | 16 KB (per SMX) | 16 KB (per CU) |
| L2 CacheDifferent | 256 KB | 768 KB |
| Compute UnitsDifferent | N/A | 32 |
Theoretical Performance
| Feature | NVIDIA GeForce GT 640 | AMD Radeon HD 7970 GHz Edition |
|---|---|---|
| Pixel RateDifferent | 7.216 GPixel/s | 33.60 GPixel/s |
| Texture RateDifferent | 28.86 GTexel/s | 134.4 GTexel/s |
| FP32 (float)Different | 692.7 GFLOPS | 4.301 TFLOPS |
| FP64 (double)Different | 28.86 GFLOPS (1:24) | 1,075.2 GFLOPS (1:4) |
Board Design
| Feature | NVIDIA GeForce GT 640 | AMD Radeon HD 7970 GHz Edition |
|---|---|---|
| Slot WidthDifferent | Single-slot | Dual-slot |
| LengthDifferent | 145 mm5.7 inches | 275 mm10.8 inches |
| TDPDifferent | 65 W | 300 W |
| Suggested PSUDifferent | 250 W | 700 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 + 1x 8-pin |
| Board NumberDifferent | P2011 SKU 0 | 109-C38637-00 |
| HeightDifferent | N/A | 111 mm4.4 inches |
| WidthDifferent | N/A | 38 mm1.5 inches |
Graphics Features
| Feature | NVIDIA GeForce GT 640 | AMD Radeon HD 7970 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
51
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 7970 GHz Edition
Compare AMD Radeon HD 7970 GHz Edition with other GPUs of similar performance
AMD Radeon HD 7970 GHz Edition vs GeForce GTX 1650
GeForce GTX 1650 Performance115%
GeForce GTX 1650 is 15% faster than AMD Radeon HD 7970 GHz Edition
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AMD Radeon HD 7970 GHz Edition vs Radeon RX 6400
Radeon RX 6400 Performance112%
Radeon RX 6400 is 12% faster than AMD Radeon HD 7970 GHz Edition
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AMD Radeon HD 7970 GHz Edition vs Arc A380
Arc A380 Performance111%
Arc A380 is 11% faster than AMD Radeon HD 7970 GHz Edition
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AMD Radeon HD 7970 GHz Edition vs GeForce GTX 780
GeForce GTX 780 Performance111%
GeForce GTX 780 is 11% faster than AMD Radeon HD 7970 GHz Edition
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AMD Radeon HD 7970 GHz Edition vs Radeon HD 7970 GHz Edition
Radeon HD 7970 GHz Edition Performance100%
Radeon HD 7970 GHz Edition is 0% slower than AMD Radeon HD 7970 GHz Edition
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AMD Radeon HD 7970 GHz Edition vs GeForce GTX 590
GeForce GTX 590 Performance100%
GeForce GTX 590 is 0% slower than AMD Radeon HD 7970 GHz Edition
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