GPU Comparison
Side-by-side comparison of specifications and performance
Performance Comparison
AMD Radeon HD 6990
135%
135%
AMD Radeon R9 270X
74%
74%
AMD Radeon HD 6990 is approximately 61% faster
Technical Specifications
| Specification | AMD Radeon HD 6990 | AMD Radeon R9 270X |
|---|---|---|
| Graphics ProcessorDifferent | Antilles x2 | Curacao |
| CoresDifferent | 1536 x2 | 1280 |
| TMUsDifferent | 96 x2 | 80 |
| ROPsDifferent | 32 x2 | 32 |
| Memory SizeDifferent | 2 GB x2 | 2 GB |
| Memory Type | GDDR5 | GDDR5 |
| Bus WidthDifferent | 256 bit x2 | 256 bit |
Graphics Processor
| Feature | AMD Radeon HD 6990 | AMD Radeon R9 270X |
|---|---|---|
| GPU NameDifferent | Antilles | Curacao |
| GPU VariantDifferent | Antilles XT(215-0807027) | Curacao XT(215-0848004) |
| ArchitectureDifferent | TeraScale 3 | GCN 1.0 |
| Foundry | TSMC | TSMC |
| Process SizeDifferent | 40 nm | 28 nm |
| TransistorsDifferent | 2,640 million | 2,800 million |
| DensityDifferent | 6.8M / mm² | 13.2M / mm² |
| Die SizeDifferent | 389 mm² | 212 mm² |
| Chip PackageDifferent | N/A | FCBGA-1737 |
Graphics Card
| Feature | AMD Radeon HD 6990 | AMD Radeon R9 270X |
|---|---|---|
| Release DateDifferent | Mar 8th, 2011 | Oct 8th, 2013 |
| GenerationDifferent | Northern Islands(HD 6900) | Volcanic Islands(R9 200) |
| PredecessorDifferent | Evergreen | Sea Islands |
| SuccessorDifferent | Southern Islands | Pirate Islands |
| Production | End-of-life | End-of-life |
| Launch PriceDifferent | 699 USD | 199 USD |
| Bus InterfaceDifferent | PCIe 2.0 x16 | PCIe 3.0 x16 |
| ReviewsDifferent | 47 in our database | 90 in our database |
Clock Speeds
| Feature | AMD Radeon HD 6990 | AMD Radeon R9 270X |
|---|---|---|
| GPU ClockDifferent | 830 MHz | N/A |
| Memory ClockDifferent | 1250 MHz5 Gbps effective | 1400 MHz5.6 Gbps effective |
| Base ClockDifferent | N/A | 1000 MHz |
| Boost ClockDifferent | N/A | 1050 MHz |
Memory
| Feature | AMD Radeon HD 6990 | AMD Radeon R9 270X |
|---|---|---|
| Memory Size | 2 GB | 2 GB |
| Memory Type | GDDR5 | GDDR5 |
| Memory Bus | 256 bit | 256 bit |
| BandwidthDifferent | 160.0 GB/s | 179.2 GB/s |
Render Config
| Feature | AMD Radeon HD 6990 | AMD Radeon R9 270X |
|---|---|---|
| Shading UnitsDifferent | 1536 | 1280 |
| TMUsDifferent | 96 | 80 |
| ROPs | 32 | 32 |
| Compute UnitsDifferent | 24 | 20 |
| L1 CacheDifferent | 8 KB (per CU) | 16 KB (per CU) |
| L2 Cache | 512 KB | 512 KB |
Theoretical Performance
| Feature | AMD Radeon HD 6990 | AMD Radeon R9 270X |
|---|---|---|
| Pixel RateDifferent | 26.56 GPixel/s | 33.60 GPixel/s |
| Texture RateDifferent | 79.68 GTexel/s | 84.00 GTexel/s |
| FP32 (float)Different | 2.550 TFLOPS | 2.688 TFLOPS |
| FP64 (double)Different | 637.4 GFLOPS (1:4) | 168.0 GFLOPS (1:16) |
Board Design
| Feature | AMD Radeon HD 6990 | AMD Radeon R9 270X |
|---|---|---|
| Slot Width | Dual-slot | Dual-slot |
| LengthDifferent | 310 mm12.2 inches | 241 mm9.5 inches |
| HeightDifferent | 115 mm4.5 inches | 109 mm4.3 inches |
| WidthDifferent | 40 mm1.6 inches | 36 mm1.4 inches |
| TDPDifferent | 375 W | 180 W |
| Suggested PSUDifferent | 750 W | 450 W |
| OutputsDifferent | 1x DVI4x mini-DisplayPort 1.2 | 2x DVI1x HDMI 1.4a1x DisplayPort 1.2 |
| Power ConnectorsDifferent | 2x 8-pin | 2x 6-pin |
| Board NumberDifferent | 109-C20647-00 | C631, 109-C63257-00A_02, 109-C63257-12_02 |
Graphics Features
| Feature | AMD Radeon HD 6990 | AMD Radeon R9 270X |
|---|---|---|
| DirectXDifferent | 11.2 (11_0) | 12 (11_1) |
| OpenGLDifferent | 4.4 | 4.6 |
| OpenCLDifferent | 1.2 | 2.1 (1.2) |
| VulkanDifferent | N/A | 1.2.170 |
| 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 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
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AMD Radeon HD 6990 vs Radeon RX 6400
Radeon RX 6400 Performance117%
Radeon RX 6400 is 17% faster than AMD Radeon HD 6990
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AMD Radeon HD 6990 vs Arc A380
Arc A380 Performance115%
Arc A380 is 15% faster than AMD Radeon HD 6990
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AMD Radeon HD 6990 vs GeForce GTX 780
GeForce GTX 780 Performance115%
GeForce GTX 780 is 15% faster than AMD Radeon HD 6990
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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
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AMD Radeon HD 6990 vs GeForce GTX 590
GeForce GTX 590 Performance104%
GeForce GTX 590 is 4% faster than AMD Radeon HD 6990
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More Comparisons with AMD Radeon R9 270X
Compare AMD Radeon R9 270X with other GPUs of similar performance
AMD Radeon R9 270X vs GeForce GTX 960
GeForce GTX 960 Performance119%
GeForce GTX 960 is 19% faster than AMD Radeon R9 270X
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AMD Radeon R9 270X vs GeForce GTX 670
GeForce GTX 670 Performance116%
GeForce GTX 670 is 16% faster than AMD Radeon R9 270X
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AMD Radeon R9 270X vs Radeon HD 5970
Radeon HD 5970 Performance105%
Radeon HD 5970 is 5% faster than AMD Radeon R9 270X
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AMD Radeon R9 270X vs GeForce GTX 1630
GeForce GTX 1630 Performance105%
GeForce GTX 1630 is 5% faster than AMD Radeon R9 270X
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AMD Radeon R9 270X vs GeForce GTX 1050
GeForce GTX 1050 Performance103%
GeForce GTX 1050 is 3% faster than AMD Radeon R9 270X
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AMD Radeon R9 270X vs GeForce GTX 760
GeForce GTX 760 Performance102%
GeForce GTX 760 is 2% faster than AMD Radeon R9 270X
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