GPU Comparison
Side-by-side comparison of specifications and performance
Performance Comparison
AMD Radeon HD 6790
39%
39%
AMD Radeon R9 285
254%
254%
AMD Radeon R9 285 is approximately 215% faster
Technical Specifications
| Specification | AMD Radeon HD 6790 | AMD Radeon R9 285 |
|---|---|---|
| Graphics ProcessorDifferent | Barts | Tonga |
| CoresDifferent | 800 | 1792 |
| TMUsDifferent | 40 | 112 |
| ROPsDifferent | 16 | 32 |
| Memory SizeDifferent | 1024 MB | 2 GB |
| Memory Type | GDDR5 | GDDR5 |
| Bus Width | 256 bit | 256 bit |
Graphics Processor
| Feature | AMD Radeon HD 6790 | AMD Radeon R9 285 |
|---|---|---|
| GPU NameDifferent | Barts | Tonga |
| GPU VariantDifferent | Barts LE(215-0798002) | Tonga PRO(215-0851128) |
| ArchitectureDifferent | TeraScale 2 | GCN 3.0 |
| Foundry | TSMC | TSMC |
| Process SizeDifferent | 40 nm | 28 nm |
| TransistorsDifferent | 1,700 million | 5,000 million |
| DensityDifferent | 6.7M / mm² | 13.7M / mm² |
| Die SizeDifferent | 255 mm² | 366 mm² |
| Chip PackageDifferent | HFCBGA-1737 | N/A |
Graphics Card
| Feature | AMD Radeon HD 6790 | AMD Radeon R9 285 |
|---|---|---|
| Release DateDifferent | Apr 4th, 2011 | Sep 2nd, 2014 |
| GenerationDifferent | Northern Islands(HD 6700) | Volcanic Islands(R9 200) |
| PredecessorDifferent | Evergreen | Sea Islands |
| SuccessorDifferent | Southern Islands | Pirate Islands |
| Production | End-of-life | End-of-life |
| Launch PriceDifferent | 149 USD | 249 USD |
| Bus InterfaceDifferent | PCIe 2.0 x16 | PCIe 3.0 x16 |
| ReviewsDifferent | 37 in our database | 59 in our database |
Clock Speeds
| Feature | AMD Radeon HD 6790 | AMD Radeon R9 285 |
|---|---|---|
| GPU ClockDifferent | 840 MHz | 918 MHz |
| Memory ClockDifferent | 1050 MHz4.2 Gbps effective | 1375 MHz5.5 Gbps effective |
Memory
| Feature | AMD Radeon HD 6790 | AMD Radeon R9 285 |
|---|---|---|
| Memory SizeDifferent | 1024 MB | 2 GB |
| Memory Type | GDDR5 | GDDR5 |
| Memory Bus | 256 bit | 256 bit |
| BandwidthDifferent | 134.4 GB/s | 176.0 GB/s |
Render Config
| Feature | AMD Radeon HD 6790 | AMD Radeon R9 285 |
|---|---|---|
| Shading UnitsDifferent | 800 | 1792 |
| TMUsDifferent | 40 | 112 |
| ROPsDifferent | 16 | 32 |
| Compute UnitsDifferent | 10 | 28 |
| L1 CacheDifferent | 8 KB (per CU) | 16 KB (per CU) |
| L2 Cache | 512 KB | 512 KB |
Theoretical Performance
| Feature | AMD Radeon HD 6790 | AMD Radeon R9 285 |
|---|---|---|
| Pixel RateDifferent | 13.44 GPixel/s | 29.38 GPixel/s |
| Texture RateDifferent | 33.60 GTexel/s | 102.8 GTexel/s |
| FP32 (float)Different | 1,344.0 GFLOPS | 3.290 TFLOPS |
| FP16 (half)Different | N/A | 3.290 TFLOPS (1:1) |
| FP64 (double)Different | N/A | 205.6 GFLOPS (1:16) |
Board Design
| Feature | AMD Radeon HD 6790 | AMD Radeon R9 285 |
|---|---|---|
| Slot Width | Dual-slot | Dual-slot |
| LengthDifferent | 198 mm7.8 inches | 221 mm8.7 inches |
| TDPDifferent | 150 W | 190 W |
| Suggested PSU | 450 W | 450 W |
| OutputsDifferent | 2x DVI1x HDMI 1.3a1x DisplayPort 1.1 | 2x DVI1x HDMI 1.4a1x DisplayPort 1.2 |
| Power Connectors | 2x 6-pin | 2x 6-pin |
| Board NumberDifferent | C220, 109-C22237-00 | C766 |
| HeightDifferent | N/A | 109 mm4.3 inches |
| WidthDifferent | N/A | 36 mm1.4 inches |
Graphics Features
| Feature | AMD Radeon HD 6790 | AMD Radeon R9 285 |
|---|---|---|
| DirectXDifferent | 11.2 (11_0) | 12 (12_0) |
| OpenGLDifferent | 4.4 | 4.6 |
| OpenCLDifferent | 1.2 | 2.1 |
| VulkanDifferent | N/A | 1.2.170 |
| Shader ModelDifferent | 5.0 | 6.5 |
Comparison Summary
7
Specifications Compared
8
Feature Categories
48
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
Compare Detailed Specs
AMD Radeon HD 6790 vs GeForce GTX 460
GeForce GTX 460 Performance106%
GeForce GTX 460 is 6% faster than AMD Radeon HD 6790
Compare Detailed Specs
More Comparisons with AMD Radeon R9 285
Compare AMD Radeon R9 285 with other GPUs of similar performance
AMD Radeon R9 285 vs Radeon HD 7970 GHz Edition
Radeon HD 7970 GHz Edition Performance114%
Radeon HD 7970 GHz Edition is 14% faster than AMD Radeon R9 285
Compare Detailed Specs
AMD Radeon R9 285 vs GeForce GTX 590
GeForce GTX 590 Performance114%
GeForce GTX 590 is 14% faster than AMD Radeon R9 285
Compare Detailed Specs
AMD Radeon R9 285 vs Radeon R9 280X
Radeon R9 280X Performance112%
Radeon R9 280X is 12% faster than AMD Radeon R9 285
Compare Detailed Specs
AMD Radeon R9 285 vs Radeon HD 6990
Radeon HD 6990 Performance110%
Radeon HD 6990 is 10% faster than AMD Radeon R9 285
Compare Detailed Specs
AMD Radeon R9 285 vs GeForce GTX 1050 Ti
GeForce GTX 1050 Ti Performance104%
GeForce GTX 1050 Ti is 4% faster than AMD Radeon R9 285
Compare Detailed Specs
AMD Radeon R9 285 vs GeForce GTX 680
GeForce GTX 680 Performance102%
GeForce GTX 680 is 2% faster than AMD Radeon R9 285
Compare Detailed Specs