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