GPU Comparison
Side-by-side comparison of specifications and performance
Performance Comparison
AMD Radeon HD 7990
694%
694%
AMD Radeon HD 6670
14%
14%
AMD Radeon HD 7990 is approximately 680% faster
Technical Specifications
| Specification | AMD Radeon HD 7990 | AMD Radeon HD 6670 |
|---|---|---|
| Graphics ProcessorDifferent | Malta x2 | Turks |
| CoresDifferent | 2048 x2 | 480 |
| TMUsDifferent | 128 x2 | 24 |
| ROPsDifferent | 32 x2 | 8 |
| Memory SizeDifferent | 3 GB x2 | 1024 MB |
| Memory Type | GDDR5 | GDDR5 |
| Bus WidthDifferent | 384 bit x2 | 128 bit |
Graphics Processor
| Feature | AMD Radeon HD 7990 | AMD Radeon HD 6670 |
|---|---|---|
| GPU NameDifferent | Malta | Turks |
| GPU VariantDifferent | Malta XT(215-0849026) | Turks XT(215-0803000) |
| ArchitectureDifferent | GCN 1.0 | TeraScale 2 |
| Foundry | TSMC | TSMC |
| Process SizeDifferent | 28 nm | 40 nm |
| TransistorsDifferent | 4,313 million | 716 million |
| DensityDifferent | 11.8M / mm² | 6.1M / mm² |
| Die SizeDifferent | 365 mm² | 118 mm² |
| Chip PackageDifferent | N/A | FCBGA-962 |
Graphics Card
| Feature | AMD Radeon HD 7990 | AMD Radeon HD 6670 |
|---|---|---|
| Release DateDifferent | Apr 24th, 2013 | Apr 19th, 2011 |
| GenerationDifferent | Southern Islands(HD 7900) | Northern Islands(HD 6600) |
| PredecessorDifferent | Northern Islands | Evergreen |
| SuccessorDifferent | Sea Islands | Southern Islands |
| Production | End-of-life | End-of-life |
| Launch PriceDifferent | 999 USD | 99 USD |
| Bus InterfaceDifferent | PCIe 3.0 x16 | PCIe 2.0 x16 |
| ReviewsDifferent | 37 in our database | 35 in our database |
Clock Speeds
| Feature | AMD Radeon HD 7990 | AMD Radeon HD 6670 |
|---|---|---|
| Base ClockDifferent | 950 MHz | N/A |
| Boost ClockDifferent | 1000 MHz | N/A |
| Memory ClockDifferent | 1500 MHz6 Gbps effective | 1000 MHz4 Gbps effective |
| GPU ClockDifferent | N/A | 800 MHz |
Memory
| Feature | AMD Radeon HD 7990 | AMD Radeon HD 6670 |
|---|---|---|
| Memory SizeDifferent | 3 GB | 1024 MB |
| Memory Type | GDDR5 | GDDR5 |
| Memory BusDifferent | 384 bit | 128 bit |
| BandwidthDifferent | 288.0 GB/s | 64.00 GB/s |
Render Config
| Feature | AMD Radeon HD 7990 | AMD Radeon HD 6670 |
|---|---|---|
| Shading UnitsDifferent | 2048 | 480 |
| TMUsDifferent | 128 | 24 |
| ROPsDifferent | 32 | 8 |
| Compute UnitsDifferent | 32 | 6 |
| L1 CacheDifferent | 16 KB (per CU) | 8 KB (per CU) |
| L2 CacheDifferent | 768 KB | 256 KB |
Theoretical Performance
| Feature | AMD Radeon HD 7990 | AMD Radeon HD 6670 |
|---|---|---|
| Pixel RateDifferent | 32.00 GPixel/s | 6.400 GPixel/s |
| Texture RateDifferent | 128.0 GTexel/s | 19.20 GTexel/s |
| FP32 (float)Different | 4.096 TFLOPS | 768.0 GFLOPS |
| FP64 (double)Different | 1,024.0 GFLOPS (1:4) | N/A |
Board Design
| Feature | AMD Radeon HD 7990 | AMD Radeon HD 6670 |
|---|---|---|
| Slot WidthDifferent | Dual-slot | Single-slot |
| LengthDifferent | 304 mm12 inches | 168 mm6.6 inches |
| HeightDifferent | 106 mm4.2 inches | N/A |
| WidthDifferent | 38 mm1.5 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-C47637-00A_02 | 109-C33437-00 |
Graphics Features
| Feature | AMD Radeon HD 7990 | AMD Radeon HD 6670 |
|---|---|---|
| DirectXDifferent | 12 (11_1) | 11.2 (11_0) |
| OpenGLDifferent | 4.6 | 4.4 |
| OpenCLDifferent | 2.1 (1.2) | 1.2 |
| VulkanDifferent | 1.2.175 | N/A |
| Shader ModelDifferent | 6.5 (5.1) | 5.0 |
Comparison Summary
7
Specifications Compared
8
Feature Categories
49
Detailed Features
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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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
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AMD Radeon HD 6670 vs Radeon HD 4850
Radeon HD 4850 Performance116%
Radeon HD 4850 is 16% faster than AMD Radeon HD 6670
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AMD Radeon HD 6670 vs Radeon HD 4770
Radeon HD 4770 Performance110%
Radeon HD 4770 is 10% faster than AMD Radeon HD 6670
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AMD Radeon HD 6670 vs Radeon HD 4830
Radeon HD 4830 Performance103%
Radeon HD 4830 is 3% faster than AMD Radeon HD 6670
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AMD Radeon HD 6670 vs Radeon HD 6670
Radeon HD 6670 Performance100%
Radeon HD 6670 is 0% slower than AMD Radeon HD 6670
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AMD Radeon HD 6670 vs GeForce 9800 GT
GeForce 9800 GT Performance96%
GeForce 9800 GT is 4% slower than AMD Radeon HD 6670
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