GPU Comparison
Side-by-side comparison of specifications and performance
Performance Comparison
AMD Radeon HD 6990
475%
475%
AMD Radeon HD 6670
21%
21%
AMD Radeon HD 6990 is approximately 454% faster
Technical Specifications
| Specification | AMD Radeon HD 6990 | AMD Radeon HD 6670 |
|---|---|---|
| Graphics ProcessorDifferent | Antilles x2 | Turks |
| CoresDifferent | 1536 x2 | 480 |
| TMUsDifferent | 96 x2 | 24 |
| ROPsDifferent | 32 x2 | 8 |
| Memory SizeDifferent | 2 GB x2 | 1024 MB |
| Memory Type | GDDR5 | GDDR5 |
| Bus WidthDifferent | 256 bit x2 | 128 bit |
Graphics Processor
| Feature | AMD Radeon HD 6990 | AMD Radeon HD 6670 |
|---|---|---|
| GPU NameDifferent | Antilles | Turks |
| GPU VariantDifferent | Antilles XT(215-0807027) | Turks XT(215-0803000) |
| ArchitectureDifferent | TeraScale 3 | TeraScale 2 |
| Foundry | TSMC | TSMC |
| Process Size | 40 nm | 40 nm |
| TransistorsDifferent | 2,640 million | 716 million |
| DensityDifferent | 6.8M / mm² | 6.1M / mm² |
| Die SizeDifferent | 389 mm² | 118 mm² |
| Chip PackageDifferent | N/A | FCBGA-962 |
Graphics Card
| Feature | AMD Radeon HD 6990 | AMD Radeon HD 6670 |
|---|---|---|
| Release DateDifferent | Mar 8th, 2011 | Apr 19th, 2011 |
| GenerationDifferent | Northern Islands(HD 6900) | Northern Islands(HD 6600) |
| Predecessor | Evergreen | Evergreen |
| Successor | Southern Islands | Southern Islands |
| Production | End-of-life | End-of-life |
| Launch PriceDifferent | 699 USD | 99 USD |
| Bus Interface | PCIe 2.0 x16 | PCIe 2.0 x16 |
| ReviewsDifferent | 47 in our database | 35 in our database |
Clock Speeds
| Feature | AMD Radeon HD 6990 | AMD Radeon HD 6670 |
|---|---|---|
| GPU ClockDifferent | 830 MHz | 800 MHz |
| Memory ClockDifferent | 1250 MHz5 Gbps effective | 1000 MHz4 Gbps effective |
Memory
| Feature | AMD Radeon HD 6990 | AMD Radeon HD 6670 |
|---|---|---|
| Memory SizeDifferent | 2 GB | 1024 MB |
| Memory Type | GDDR5 | GDDR5 |
| Memory BusDifferent | 256 bit | 128 bit |
| BandwidthDifferent | 160.0 GB/s | 64.00 GB/s |
Render Config
| Feature | AMD Radeon HD 6990 | AMD Radeon HD 6670 |
|---|---|---|
| Shading UnitsDifferent | 1536 | 480 |
| TMUsDifferent | 96 | 24 |
| ROPsDifferent | 32 | 8 |
| Compute UnitsDifferent | 24 | 6 |
| L1 Cache | 8 KB (per CU) | 8 KB (per CU) |
| L2 CacheDifferent | 512 KB | 256 KB |
Theoretical Performance
| Feature | AMD Radeon HD 6990 | AMD Radeon HD 6670 |
|---|---|---|
| Pixel RateDifferent | 26.56 GPixel/s | 6.400 GPixel/s |
| Texture RateDifferent | 79.68 GTexel/s | 19.20 GTexel/s |
| FP32 (float)Different | 2.550 TFLOPS | 768.0 GFLOPS |
| FP64 (double)Different | 637.4 GFLOPS (1:4) | N/A |
Board Design
| Feature | AMD Radeon HD 6990 | AMD Radeon HD 6670 |
|---|---|---|
| Slot WidthDifferent | Dual-slot | Single-slot |
| LengthDifferent | 310 mm12.2 inches | 168 mm6.6 inches |
| HeightDifferent | 115 mm4.5 inches | N/A |
| WidthDifferent | 40 mm1.6 inches | N/A |
| TDPDifferent | 375 W | 66 W |
| Suggested PSUDifferent | 750 W | 250 W |
| OutputsDifferent | 1x DVI4x mini-DisplayPort 1.2 | 1x DVI1x HDMI 1.3a1x VGA |
| Power ConnectorsDifferent | 2x 8-pin | None |
| Board NumberDifferent | 109-C20647-00 | 109-C33437-00 |
Graphics Features
| Feature | AMD Radeon HD 6990 | AMD Radeon HD 6670 |
|---|---|---|
| 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 6670
Compare AMD Radeon HD 6670 with other GPUs of similar performance
AMD Radeon HD 6670 vs GeForce GTS 250
GeForce GTS 250 Performance119%
GeForce GTS 250 is 19% faster than AMD Radeon HD 6670
Compare Detailed Specs
AMD Radeon HD 6670 vs Radeon HD 4850
Radeon HD 4850 Performance116%
Radeon HD 4850 is 16% faster than AMD Radeon HD 6670
Compare Detailed Specs
AMD Radeon HD 6670 vs Radeon HD 4770
Radeon HD 4770 Performance110%
Radeon HD 4770 is 10% faster than AMD Radeon HD 6670
Compare Detailed Specs
AMD Radeon HD 6670 vs Radeon HD 4830
Radeon HD 4830 Performance103%
Radeon HD 4830 is 3% faster than AMD Radeon HD 6670
Compare Detailed Specs
AMD Radeon HD 6670 vs Radeon HD 6670
Radeon HD 6670 Performance100%
Radeon HD 6670 is 0% slower than AMD Radeon HD 6670
Compare Detailed Specs
AMD Radeon HD 6670 vs GeForce 9800 GT
GeForce 9800 GT Performance96%
GeForce 9800 GT is 4% slower than AMD Radeon HD 6670
Compare Detailed Specs