GPU Comparison
Side-by-side comparison of specifications and performance
Performance Comparison
AMD Radeon HD 6990
279%
279%
AMD Radeon HD 6790
36%
36%
AMD Radeon HD 6990 is approximately 243% faster
Technical Specifications
| Specification | AMD Radeon HD 6990 | AMD Radeon HD 6790 |
|---|---|---|
| Graphics ProcessorDifferent | Antilles x2 | Barts |
| CoresDifferent | 1536 x2 | 800 |
| TMUsDifferent | 96 x2 | 40 |
| ROPsDifferent | 32 x2 | 16 |
| Memory SizeDifferent | 2 GB x2 | 1024 MB |
| Memory Type | GDDR5 | GDDR5 |
| Bus WidthDifferent | 256 bit x2 | 256 bit |
Graphics Processor
| Feature | AMD Radeon HD 6990 | AMD Radeon HD 6790 |
|---|---|---|
| GPU NameDifferent | Antilles | Barts |
| GPU VariantDifferent | Antilles XT(215-0807027) | Barts LE(215-0798002) |
| ArchitectureDifferent | TeraScale 3 | TeraScale 2 |
| Foundry | TSMC | TSMC |
| Process Size | 40 nm | 40 nm |
| TransistorsDifferent | 2,640 million | 1,700 million |
| DensityDifferent | 6.8M / mm² | 6.7M / mm² |
| Die SizeDifferent | 389 mm² | 255 mm² |
| Chip PackageDifferent | N/A | HFCBGA-1737 |
Graphics Card
| Feature | AMD Radeon HD 6990 | AMD Radeon HD 6790 |
|---|---|---|
| Release DateDifferent | Mar 8th, 2011 | Apr 4th, 2011 |
| GenerationDifferent | Northern Islands(HD 6900) | Northern Islands(HD 6700) |
| Predecessor | Evergreen | Evergreen |
| Successor | Southern Islands | Southern Islands |
| Production | End-of-life | End-of-life |
| Launch PriceDifferent | 699 USD | 149 USD |
| Bus Interface | PCIe 2.0 x16 | PCIe 2.0 x16 |
| ReviewsDifferent | 47 in our database | 37 in our database |
Clock Speeds
| Feature | AMD Radeon HD 6990 | AMD Radeon HD 6790 |
|---|---|---|
| GPU ClockDifferent | 830 MHz | 840 MHz |
| Memory ClockDifferent | 1250 MHz5 Gbps effective | 1050 MHz4.2 Gbps effective |
Memory
| Feature | AMD Radeon HD 6990 | AMD Radeon HD 6790 |
|---|---|---|
| Memory SizeDifferent | 2 GB | 1024 MB |
| Memory Type | GDDR5 | GDDR5 |
| Memory Bus | 256 bit | 256 bit |
| BandwidthDifferent | 160.0 GB/s | 134.4 GB/s |
Render Config
| Feature | AMD Radeon HD 6990 | AMD Radeon HD 6790 |
|---|---|---|
| Shading UnitsDifferent | 1536 | 800 |
| TMUsDifferent | 96 | 40 |
| ROPsDifferent | 32 | 16 |
| Compute UnitsDifferent | 24 | 10 |
| L1 Cache | 8 KB (per CU) | 8 KB (per CU) |
| L2 Cache | 512 KB | 512 KB |
Theoretical Performance
| Feature | AMD Radeon HD 6990 | AMD Radeon HD 6790 |
|---|---|---|
| Pixel RateDifferent | 26.56 GPixel/s | 13.44 GPixel/s |
| Texture RateDifferent | 79.68 GTexel/s | 33.60 GTexel/s |
| FP32 (float)Different | 2.550 TFLOPS | 1,344.0 GFLOPS |
| FP64 (double)Different | 637.4 GFLOPS (1:4) | N/A |
Board Design
| Feature | AMD Radeon HD 6990 | AMD Radeon HD 6790 |
|---|---|---|
| Slot Width | Dual-slot | Dual-slot |
| LengthDifferent | 310 mm12.2 inches | 198 mm7.8 inches |
| HeightDifferent | 115 mm4.5 inches | N/A |
| WidthDifferent | 40 mm1.6 inches | N/A |
| TDPDifferent | 375 W | 150 W |
| Suggested PSUDifferent | 750 W | 450 W |
| OutputsDifferent | 1x DVI4x mini-DisplayPort 1.2 | 2x DVI1x HDMI 1.3a1x DisplayPort 1.1 |
| Power ConnectorsDifferent | 2x 8-pin | 2x 6-pin |
| Board NumberDifferent | 109-C20647-00 | C220, 109-C22237-00 |
Graphics Features
| Feature | AMD Radeon HD 6990 | AMD Radeon HD 6790 |
|---|---|---|
| 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
47
Detailed Features
More Comparisons with AMD Radeon HD 6990
Compare AMD Radeon HD 6990 with other GPUs of similar performance
AMD Radeon HD 6990 vs GeForce GTX 1650
GeForce GTX 1650 Performance119%
GeForce GTX 1650 is 19% faster than AMD Radeon HD 6990
Compare Detailed Specs
AMD Radeon HD 6990 vs Radeon RX 6400
Radeon RX 6400 Performance117%
Radeon RX 6400 is 17% faster than AMD Radeon HD 6990
Compare Detailed Specs
AMD Radeon HD 6990 vs Arc A380
Arc A380 Performance115%
Arc A380 is 15% faster than AMD Radeon HD 6990
Compare Detailed Specs
AMD Radeon HD 6990 vs GeForce GTX 780
GeForce GTX 780 Performance115%
GeForce GTX 780 is 15% faster than AMD Radeon HD 6990
Compare Detailed Specs
AMD Radeon HD 6990 vs Radeon HD 7970 GHz Edition
Radeon HD 7970 GHz Edition Performance104%
Radeon HD 7970 GHz Edition is 4% faster than AMD Radeon HD 6990
Compare Detailed Specs
AMD Radeon HD 6990 vs GeForce GTX 590
GeForce GTX 590 Performance104%
GeForce GTX 590 is 4% faster than AMD Radeon HD 6990
Compare Detailed Specs
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