GPU Comparison
Side-by-side comparison of specifications and performance
Performance Comparison
NVIDIA GeForce GT 640
33%
33%
AMD Radeon HD 7850
307%
307%
AMD Radeon HD 7850 is approximately 274% faster
Technical Specifications
| Specification | NVIDIA GeForce GT 640 | AMD Radeon HD 7850 |
|---|---|---|
| Graphics ProcessorDifferent | GK107 | Pitcairn |
| CoresDifferent | 384 | 1024 |
| TMUsDifferent | 32 | 64 |
| 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 7850 |
|---|---|---|
| GPU NameDifferent | GK107 | Pitcairn |
| GPU VariantDifferent | GK107-300-A2 | Pitcairn PRO(215-0828062) |
| ArchitectureDifferent | Kepler | GCN 1.0 |
| Foundry | TSMC | TSMC |
| Process Size | 28 nm | 28 nm |
| TransistorsDifferent | 1,270 million | 2,800 million |
| DensityDifferent | 10.8M / mm² | 13.2M / mm² |
| Die SizeDifferent | 118 mm² | 212 mm² |
| Chip PackageDifferent | BGA-908 | FCBGA-1737 |
Graphics Card
| Feature | NVIDIA GeForce GT 640 | AMD Radeon HD 7850 |
|---|---|---|
| Release DateDifferent | Jun 5th, 2012 | Mar 5th, 2012 |
| GenerationDifferent | GeForce 600 | Southern Islands(HD 7800) |
| PredecessorDifferent | GeForce 500 | Northern Islands |
| SuccessorDifferent | GeForce 700 | Sea Islands |
| Production | End-of-life | End-of-life |
| Launch PriceDifferent | 99 USD | 249 USD |
| Bus Interface | PCIe 3.0 x16 | PCIe 3.0 x16 |
| ReviewsDifferent | 8 in our database | 71 in our database |
Clock Speeds
| Feature | NVIDIA GeForce GT 640 | AMD Radeon HD 7850 |
|---|---|---|
| GPU ClockDifferent | 902 MHz | 860 MHz |
| Memory ClockDifferent | 891 MHz1782 Mbps effective | 1200 MHz4.8 Gbps effective |
Memory
| Feature | NVIDIA GeForce GT 640 | AMD Radeon HD 7850 |
|---|---|---|
| Memory Size | 2 GB | 2 GB |
| Memory TypeDifferent | DDR3 | GDDR5 |
| Memory BusDifferent | 128 bit | 256 bit |
| BandwidthDifferent | 28.51 GB/s | 153.6 GB/s |
Render Config
| Feature | NVIDIA GeForce GT 640 | AMD Radeon HD 7850 |
|---|---|---|
| Shading UnitsDifferent | 384 | 1024 |
| TMUsDifferent | 32 | 64 |
| ROPsDifferent | 16 | 32 |
| SMX CountDifferent | 2 | N/A |
| L1 CacheDifferent | 16 KB (per SMX) | 16 KB (per CU) |
| L2 CacheDifferent | 256 KB | 512 KB |
| Compute UnitsDifferent | N/A | 16 |
Theoretical Performance
| Feature | NVIDIA GeForce GT 640 | AMD Radeon HD 7850 |
|---|---|---|
| Pixel RateDifferent | 7.216 GPixel/s | 27.52 GPixel/s |
| Texture RateDifferent | 28.86 GTexel/s | 55.04 GTexel/s |
| FP32 (float)Different | 692.7 GFLOPS | 1.761 TFLOPS |
| FP64 (double)Different | 28.86 GFLOPS (1:24) | 110.1 GFLOPS (1:16) |
Board Design
| Feature | NVIDIA GeForce GT 640 | AMD Radeon HD 7850 |
|---|---|---|
| Slot WidthDifferent | Single-slot | Dual-slot |
| LengthDifferent | 145 mm5.7 inches | 210 mm8.3 inches |
| TDPDifferent | 65 W | 130 W |
| Suggested PSUDifferent | 250 W | 300 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-C40147-00, 109-C40337-00A |
Graphics Features
| Feature | NVIDIA GeForce GT 640 | AMD Radeon HD 7850 |
|---|---|---|
| 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
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
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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
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
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More Comparisons with AMD Radeon HD 7850
Compare AMD Radeon HD 7850 with other GPUs of similar performance
AMD Radeon HD 7850 vs GeForce GTX 950
GeForce GTX 950 Performance120%
GeForce GTX 950 is 20% faster than AMD Radeon HD 7850
Compare Detailed Specs
AMD Radeon HD 7850 vs Radeon RX 560
Radeon RX 560 Performance113%
Radeon RX 560 is 13% faster than AMD Radeon HD 7850
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AMD Radeon HD 7850 vs GeForce GTX 570
GeForce GTX 570 Performance111%
GeForce GTX 570 is 11% faster than AMD Radeon HD 7850
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AMD Radeon HD 7850 vs GeForce GTX 660
GeForce GTX 660 Performance111%
GeForce GTX 660 is 11% faster than AMD Radeon HD 7850
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AMD Radeon HD 7850 vs Radeon R7 370
Radeon R7 370 Performance110%
Radeon R7 370 is 10% faster than AMD Radeon HD 7850
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AMD Radeon HD 7850 vs Radeon HD 6970
Radeon HD 6970 Performance106%
Radeon HD 6970 is 6% faster than AMD Radeon HD 7850
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