GPU Comparison
Side-by-side comparison of specifications and performance
Performance Comparison
AMD Radeon HD 6790
25%
25%
AMD Radeon HD 7990
407%
407%
AMD Radeon HD 7990 is approximately 382% faster
Technical Specifications
| Specification | AMD Radeon HD 6790 | AMD Radeon HD 7990 |
|---|---|---|
| Graphics ProcessorDifferent | Barts | Malta x2 |
| CoresDifferent | 800 | 2048 x2 |
| TMUsDifferent | 40 | 128 x2 |
| ROPsDifferent | 16 | 32 x2 |
| Memory SizeDifferent | 1024 MB | 3 GB x2 |
| Memory Type | GDDR5 | GDDR5 |
| Bus WidthDifferent | 256 bit | 384 bit x2 |
Graphics Processor
| Feature | AMD Radeon HD 6790 | AMD Radeon HD 7990 |
|---|---|---|
| GPU NameDifferent | Barts | Malta |
| GPU VariantDifferent | Barts LE(215-0798002) | Malta XT(215-0849026) |
| ArchitectureDifferent | TeraScale 2 | GCN 1.0 |
| Foundry | TSMC | TSMC |
| Process SizeDifferent | 40 nm | 28 nm |
| TransistorsDifferent | 1,700 million | 4,313 million |
| DensityDifferent | 6.7M / mm² | 11.8M / mm² |
| Die SizeDifferent | 255 mm² | 365 mm² |
| Chip PackageDifferent | HFCBGA-1737 | N/A |
Graphics Card
| Feature | AMD Radeon HD 6790 | AMD Radeon HD 7990 |
|---|---|---|
| Release DateDifferent | Apr 4th, 2011 | Apr 24th, 2013 |
| GenerationDifferent | Northern Islands(HD 6700) | Southern Islands(HD 7900) |
| PredecessorDifferent | Evergreen | Northern Islands |
| SuccessorDifferent | Southern Islands | Sea Islands |
| Production | End-of-life | End-of-life |
| Launch PriceDifferent | 149 USD | 999 USD |
| Bus InterfaceDifferent | PCIe 2.0 x16 | PCIe 3.0 x16 |
| Reviews | 37 in our database | 37 in our database |
Clock Speeds
| Feature | AMD Radeon HD 6790 | AMD Radeon HD 7990 |
|---|---|---|
| GPU ClockDifferent | 840 MHz | N/A |
| Memory ClockDifferent | 1050 MHz4.2 Gbps effective | 1500 MHz6 Gbps effective |
| Base ClockDifferent | N/A | 950 MHz |
| Boost ClockDifferent | N/A | 1000 MHz |
Memory
| Feature | AMD Radeon HD 6790 | AMD Radeon HD 7990 |
|---|---|---|
| Memory SizeDifferent | 1024 MB | 3 GB |
| Memory Type | GDDR5 | GDDR5 |
| Memory BusDifferent | 256 bit | 384 bit |
| BandwidthDifferent | 134.4 GB/s | 288.0 GB/s |
Render Config
| Feature | AMD Radeon HD 6790 | AMD Radeon HD 7990 |
|---|---|---|
| Shading UnitsDifferent | 800 | 2048 |
| TMUsDifferent | 40 | 128 |
| ROPsDifferent | 16 | 32 |
| Compute UnitsDifferent | 10 | 32 |
| L1 CacheDifferent | 8 KB (per CU) | 16 KB (per CU) |
| L2 CacheDifferent | 512 KB | 768 KB |
Theoretical Performance
| Feature | AMD Radeon HD 6790 | AMD Radeon HD 7990 |
|---|---|---|
| Pixel RateDifferent | 13.44 GPixel/s | 32.00 GPixel/s |
| Texture RateDifferent | 33.60 GTexel/s | 128.0 GTexel/s |
| FP32 (float)Different | 1,344.0 GFLOPS | 4.096 TFLOPS |
| FP64 (double)Different | N/A | 1,024.0 GFLOPS (1:4) |
Board Design
| Feature | AMD Radeon HD 6790 | AMD Radeon HD 7990 |
|---|---|---|
| Slot Width | Dual-slot | Dual-slot |
| LengthDifferent | 198 mm7.8 inches | 304 mm12 inches |
| TDPDifferent | 150 W | 375 W |
| Suggested PSUDifferent | 450 W | 750 W |
| OutputsDifferent | 2x DVI1x HDMI 1.3a1x DisplayPort 1.1 | 1x DVI4x mini-DisplayPort 1.2 |
| Power ConnectorsDifferent | 2x 6-pin | 2x 8-pin |
| Board NumberDifferent | C220, 109-C22237-00 | 109-C47637-00A_02 |
| HeightDifferent | N/A | 106 mm4.2 inches |
| WidthDifferent | N/A | 38 mm1.5 inches |
Graphics Features
| Feature | AMD Radeon HD 6790 | AMD Radeon HD 7990 |
|---|---|---|
| DirectXDifferent | 11.2 (11_0) | 12 (11_1) |
| OpenGLDifferent | 4.4 | 4.6 |
| OpenCLDifferent | 1.2 | 2.1 (1.2) |
| VulkanDifferent | N/A | 1.2.175 |
| Shader ModelDifferent | 5.0 | 6.5 (5.1) |
Comparison Summary
7
Specifications Compared
8
Feature Categories
49
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
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AMD Radeon HD 6790 vs Radeon HD 6850
Radeon HD 6850 Performance116%
Radeon HD 6850 is 16% faster than AMD Radeon HD 6790
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AMD Radeon HD 6790 vs GeForce GTX 280
GeForce GTX 280 Performance109%
GeForce GTX 280 is 9% faster than AMD Radeon HD 6790
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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
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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 7990
Compare AMD Radeon HD 7990 with other GPUs of similar performance
AMD Radeon HD 7990 vs Radeon RX 590
Radeon RX 590 Performance115%
Radeon RX 590 is 15% faster than AMD Radeon HD 7990
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AMD Radeon HD 7990 vs Radeon R9 FURY
Radeon R9 FURY Performance112%
Radeon R9 FURY is 12% faster than AMD Radeon HD 7990
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AMD Radeon HD 7990 vs GeForce GTX 980
GeForce GTX 980 Performance111%
GeForce GTX 980 is 11% faster than AMD Radeon HD 7990
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AMD Radeon HD 7990 vs GeForce GTX 1650 SUPER
GeForce GTX 1650 SUPER Performance110%
GeForce GTX 1650 SUPER is 10% faster than AMD Radeon HD 7990
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AMD Radeon HD 7990 vs Radeon RX 6500 XT
Radeon RX 6500 XT Performance109%
Radeon RX 6500 XT is 9% faster than AMD Radeon HD 7990
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AMD Radeon HD 7990 vs Radeon RX 5500 XT
Radeon RX 5500 XT Performance108%
Radeon RX 5500 XT is 8% faster than AMD Radeon HD 7990
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