GPU Comparison
Side-by-side comparison of specifications and performance
Performance Comparison
AMD Radeon HD 6790
485%
485%
AMD Radeon HD 6450
21%
21%
AMD Radeon HD 6790 is approximately 464% faster
Technical Specifications
| Specification | AMD Radeon HD 6790 | AMD Radeon HD 6450 |
|---|---|---|
| Graphics ProcessorDifferent | Barts | Caicos |
| CoresDifferent | 800 | 160 |
| TMUsDifferent | 40 | 8 |
| ROPsDifferent | 16 | 4 |
| Memory SizeDifferent | 1024 MB | 512 MB |
| Memory TypeDifferent | GDDR5 | GDDR3 |
| Bus WidthDifferent | 256 bit | 64 bit |
Graphics Processor
| Feature | AMD Radeon HD 6790 | AMD Radeon HD 6450 |
|---|---|---|
| GPU NameDifferent | Barts | Caicos |
| GPU VariantDifferent | Barts LE(215-0798002) | Caicos PRO |
| Architecture | TeraScale 2 | TeraScale 2 |
| Foundry | TSMC | TSMC |
| Process Size | 40 nm | 40 nm |
| TransistorsDifferent | 1,700 million | 370 million |
| DensityDifferent | 6.7M / mm² | 5.5M / mm² |
| Die SizeDifferent | 255 mm² | 67 mm² |
| Chip PackageDifferent | HFCBGA-1737 | FCBGA-631 |
Graphics Card
| Feature | AMD Radeon HD 6790 | AMD Radeon HD 6450 |
|---|---|---|
| Release DateDifferent | Apr 4th, 2011 | Apr 7th, 2011 |
| GenerationDifferent | Northern Islands(HD 6700) | Northern Islands(HD 6400) |
| Predecessor | Evergreen | Evergreen |
| Successor | Southern Islands | Southern Islands |
| Production | End-of-life | End-of-life |
| Launch PriceDifferent | 149 USD | 55 USD |
| Bus Interface | PCIe 2.0 x16 | PCIe 2.0 x16 |
| ReviewsDifferent | 37 in our database | 14 in our database |
Clock Speeds
| Feature | AMD Radeon HD 6790 | AMD Radeon HD 6450 |
|---|---|---|
| GPU ClockDifferent | 840 MHz | 625 MHz |
| Memory ClockDifferent | 1050 MHz4.2 Gbps effective | 500 MHz1000 Mbps effective |
Memory
| Feature | AMD Radeon HD 6790 | AMD Radeon HD 6450 |
|---|---|---|
| Memory SizeDifferent | 1024 MB | 512 MB |
| Memory TypeDifferent | GDDR5 | GDDR3 |
| Memory BusDifferent | 256 bit | 64 bit |
| BandwidthDifferent | 134.4 GB/s | 8.000 GB/s |
Render Config
| Feature | AMD Radeon HD 6790 | AMD Radeon HD 6450 |
|---|---|---|
| Shading UnitsDifferent | 800 | 160 |
| TMUsDifferent | 40 | 8 |
| ROPsDifferent | 16 | 4 |
| Compute UnitsDifferent | 10 | 2 |
| L1 Cache | 8 KB (per CU) | 8 KB (per CU) |
| L2 CacheDifferent | 512 KB | 128 KB |
Theoretical Performance
| Feature | AMD Radeon HD 6790 | AMD Radeon HD 6450 |
|---|---|---|
| Pixel RateDifferent | 13.44 GPixel/s | 2.500 GPixel/s |
| Texture RateDifferent | 33.60 GTexel/s | 5.000 GTexel/s |
| FP32 (float)Different | 1,344.0 GFLOPS | 200.0 GFLOPS |
Board Design
| Feature | AMD Radeon HD 6790 | AMD Radeon HD 6450 |
|---|---|---|
| Slot WidthDifferent | Dual-slot | Single-slot |
| LengthDifferent | 198 mm7.8 inches | 168 mm6.6 inches |
| TDPDifferent | 150 W | 18 W |
| Suggested PSUDifferent | 450 W | 200 W |
| OutputsDifferent | 2x DVI1x HDMI 1.3a1x DisplayPort 1.1 | 1x DVI1x HDMI 1.3a1x VGA |
| Power ConnectorsDifferent | 2x 6-pin | None |
| Board NumberDifferent | C220, 109-C22237-00 | 109-C26037-00A |
Graphics Features
| Feature | AMD Radeon HD 6790 | AMD Radeon HD 6450 |
|---|---|---|
| DirectX | 11.2 (11_0) | 11.2 (11_0) |
| OpenGL | 4.4 | 4.4 |
| OpenCL | 1.2 | 1.2 |
| Vulkan | N/A | N/A |
| Shader Model | 5.0 | 5.0 |
Comparison Summary
7
Specifications Compared
8
Feature Categories
44
Detailed Features
More Comparisons with AMD Radeon HD 6790
Compare AMD Radeon HD 6790 with other GPUs of similar performance
AMD Radeon HD 6790 vs GeForce GTX 285
GeForce GTX 285 Performance119%
GeForce GTX 285 is 19% faster than AMD Radeon HD 6790
Compare Detailed Specs
AMD Radeon HD 6790 vs Radeon HD 6850
Radeon HD 6850 Performance116%
Radeon HD 6850 is 16% faster than AMD Radeon HD 6790
Compare Detailed Specs
AMD Radeon HD 6790 vs GeForce GTX 280
GeForce GTX 280 Performance109%
GeForce GTX 280 is 9% faster than AMD Radeon HD 6790
Compare Detailed Specs
AMD Radeon HD 6790 vs Radeon HD 7770 GHz Edition
Radeon HD 7770 GHz Edition Performance109%
Radeon HD 7770 GHz Edition is 9% faster than AMD Radeon HD 6790
Compare Detailed Specs
AMD Radeon HD 6790 vs GeForce GTX 275
GeForce GTX 275 Performance108%
GeForce GTX 275 is 8% faster than AMD Radeon HD 6790
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AMD Radeon HD 6790 vs GeForce GTX 460
GeForce GTX 460 Performance106%
GeForce GTX 460 is 6% faster than AMD Radeon HD 6790
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More Comparisons with AMD Radeon HD 6450
Compare AMD Radeon HD 6450 with other GPUs of similar performance
AMD Radeon HD 6450 vs GeForce GT 520
GeForce GT 520 Performance106%
GeForce GT 520 is 6% faster than AMD Radeon HD 6450
Compare Detailed Specs
AMD Radeon HD 6450 vs Radeon HD 6450
Radeon HD 6450 Performance100%
Radeon HD 6450 is 0% slower than AMD Radeon HD 6450
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AMD Radeon HD 6450 vs Radeon HD 5450
Radeon HD 5450 Performance85%
Radeon HD 5450 is 15% slower than AMD Radeon HD 6450
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AMD Radeon HD 6450 vs Radeon HD 6450
Radeon HD 6450 Performance100%
Radeon HD 6450 is 0% slower than AMD Radeon HD 6450
Compare Detailed Specs
AMD Radeon HD 6450 vs Radeon HD 6450
Radeon HD 6450 Performance100%
Radeon HD 6450 is 0% slower than AMD Radeon HD 6450
Compare Detailed Specs