GPU Comparison
Side-by-side comparison of specifications and performance
Performance Comparison
AMD Radeon HD 7990
160%
160%
AMD Radeon R9 285
62%
62%
AMD Radeon HD 7990 is approximately 98% faster
Technical Specifications
| Specification | AMD Radeon HD 7990 | AMD Radeon R9 285 |
|---|---|---|
| Graphics ProcessorDifferent | Malta x2 | Tonga |
| CoresDifferent | 2048 x2 | 1792 |
| TMUsDifferent | 128 x2 | 112 |
| ROPsDifferent | 32 x2 | 32 |
| Memory SizeDifferent | 3 GB x2 | 2 GB |
| Memory Type | GDDR5 | GDDR5 |
| Bus WidthDifferent | 384 bit x2 | 256 bit |
Graphics Processor
| Feature | AMD Radeon HD 7990 | AMD Radeon R9 285 |
|---|---|---|
| GPU NameDifferent | Malta | Tonga |
| GPU VariantDifferent | Malta XT(215-0849026) | Tonga PRO(215-0851128) |
| ArchitectureDifferent | GCN 1.0 | GCN 3.0 |
| Foundry | TSMC | TSMC |
| Process Size | 28 nm | 28 nm |
| TransistorsDifferent | 4,313 million | 5,000 million |
| DensityDifferent | 11.8M / mm² | 13.7M / mm² |
| Die SizeDifferent | 365 mm² | 366 mm² |
Graphics Card
| Feature | AMD Radeon HD 7990 | AMD Radeon R9 285 |
|---|---|---|
| Release DateDifferent | Apr 24th, 2013 | Sep 2nd, 2014 |
| GenerationDifferent | Southern Islands(HD 7900) | Volcanic Islands(R9 200) |
| PredecessorDifferent | Northern Islands | Sea Islands |
| SuccessorDifferent | Sea Islands | Pirate Islands |
| Production | End-of-life | End-of-life |
| Launch PriceDifferent | 999 USD | 249 USD |
| Bus Interface | PCIe 3.0 x16 | PCIe 3.0 x16 |
| ReviewsDifferent | 37 in our database | 59 in our database |
Clock Speeds
| Feature | AMD Radeon HD 7990 | AMD Radeon R9 285 |
|---|---|---|
| Base ClockDifferent | 950 MHz | N/A |
| Boost ClockDifferent | 1000 MHz | N/A |
| Memory ClockDifferent | 1500 MHz6 Gbps effective | 1375 MHz5.5 Gbps effective |
| GPU ClockDifferent | N/A | 918 MHz |
Memory
| Feature | AMD Radeon HD 7990 | AMD Radeon R9 285 |
|---|---|---|
| Memory SizeDifferent | 3 GB | 2 GB |
| Memory Type | GDDR5 | GDDR5 |
| Memory BusDifferent | 384 bit | 256 bit |
| BandwidthDifferent | 288.0 GB/s | 176.0 GB/s |
Render Config
| Feature | AMD Radeon HD 7990 | AMD Radeon R9 285 |
|---|---|---|
| Shading UnitsDifferent | 2048 | 1792 |
| TMUsDifferent | 128 | 112 |
| ROPs | 32 | 32 |
| Compute UnitsDifferent | 32 | 28 |
| L1 Cache | 16 KB (per CU) | 16 KB (per CU) |
| L2 CacheDifferent | 768 KB | 512 KB |
Theoretical Performance
| Feature | AMD Radeon HD 7990 | AMD Radeon R9 285 |
|---|---|---|
| Pixel RateDifferent | 32.00 GPixel/s | 29.38 GPixel/s |
| Texture RateDifferent | 128.0 GTexel/s | 102.8 GTexel/s |
| FP32 (float)Different | 4.096 TFLOPS | 3.290 TFLOPS |
| FP64 (double)Different | 1,024.0 GFLOPS (1:4) | 205.6 GFLOPS (1:16) |
| FP16 (half)Different | N/A | 3.290 TFLOPS (1:1) |
Board Design
| Feature | AMD Radeon HD 7990 | AMD Radeon R9 285 |
|---|---|---|
| Slot Width | Dual-slot | Dual-slot |
| LengthDifferent | 304 mm12 inches | 221 mm8.7 inches |
| HeightDifferent | 106 mm4.2 inches | 109 mm4.3 inches |
| WidthDifferent | 38 mm1.5 inches | 36 mm1.4 inches |
| TDPDifferent | 375 W | 190 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-C47637-00A_02 | C766 |
Graphics Features
| Feature | AMD Radeon HD 7990 | AMD Radeon R9 285 |
|---|---|---|
| DirectXDifferent | 12 (11_1) | 12 (12_0) |
| OpenGL | 4.6 | 4.6 |
| OpenCLDifferent | 2.1 (1.2) | 2.1 |
| VulkanDifferent | 1.2.175 | 1.2.170 |
| Shader ModelDifferent | 6.5 (5.1) | 6.5 |
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 R9 285
Compare AMD Radeon R9 285 with other GPUs of similar performance
AMD Radeon R9 285 vs Radeon HD 7970 GHz Edition
Radeon HD 7970 GHz Edition Performance114%
Radeon HD 7970 GHz Edition is 14% faster than AMD Radeon R9 285
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AMD Radeon R9 285 vs GeForce GTX 590
GeForce GTX 590 Performance114%
GeForce GTX 590 is 14% faster than AMD Radeon R9 285
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AMD Radeon R9 285 vs Radeon R9 280X
Radeon R9 280X Performance112%
Radeon R9 280X is 12% faster than AMD Radeon R9 285
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AMD Radeon R9 285 vs Radeon HD 6990
Radeon HD 6990 Performance110%
Radeon HD 6990 is 10% faster than AMD Radeon R9 285
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AMD Radeon R9 285 vs GeForce GTX 1050 Ti
GeForce GTX 1050 Ti Performance104%
GeForce GTX 1050 Ti is 4% faster than AMD Radeon R9 285
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AMD Radeon R9 285 vs GeForce GTX 680
GeForce GTX 680 Performance102%
GeForce GTX 680 is 2% faster than AMD Radeon R9 285
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