GPU Comparison
Side-by-side comparison of specifications and performance
Performance Comparison
AMD Radeon HD 7990
146%
146%
AMD Radeon HD 6990
68%
68%
AMD Radeon HD 7990 is approximately 78% faster
Technical Specifications
| Specification | AMD Radeon HD 7990 | AMD Radeon HD 6990 |
|---|---|---|
| Graphics ProcessorDifferent | Malta x2 | Antilles x2 |
| CoresDifferent | 2048 x2 | 1536 x2 |
| TMUsDifferent | 128 x2 | 96 x2 |
| ROPs | 32 x2 | 32 x2 |
| Memory SizeDifferent | 3 GB x2 | 2 GB x2 |
| Memory Type | GDDR5 | GDDR5 |
| Bus WidthDifferent | 384 bit x2 | 256 bit x2 |
Graphics Processor
| Feature | AMD Radeon HD 7990 | AMD Radeon HD 6990 |
|---|---|---|
| GPU NameDifferent | Malta | Antilles |
| GPU VariantDifferent | Malta XT(215-0849026) | Antilles XT(215-0807027) |
| ArchitectureDifferent | GCN 1.0 | TeraScale 3 |
| Foundry | TSMC | TSMC |
| Process SizeDifferent | 28 nm | 40 nm |
| TransistorsDifferent | 4,313 million | 2,640 million |
| DensityDifferent | 11.8M / mm² | 6.8M / mm² |
| Die SizeDifferent | 365 mm² | 389 mm² |
Graphics Card
| Feature | AMD Radeon HD 7990 | AMD Radeon HD 6990 |
|---|---|---|
| Release DateDifferent | Apr 24th, 2013 | Mar 8th, 2011 |
| GenerationDifferent | Southern Islands(HD 7900) | Northern Islands(HD 6900) |
| PredecessorDifferent | Northern Islands | Evergreen |
| SuccessorDifferent | Sea Islands | Southern Islands |
| Production | End-of-life | End-of-life |
| Launch PriceDifferent | 999 USD | 699 USD |
| Bus InterfaceDifferent | PCIe 3.0 x16 | PCIe 2.0 x16 |
| ReviewsDifferent | 37 in our database | 47 in our database |
Clock Speeds
| Feature | AMD Radeon HD 7990 | AMD Radeon HD 6990 |
|---|---|---|
| Base ClockDifferent | 950 MHz | N/A |
| Boost ClockDifferent | 1000 MHz | N/A |
| Memory ClockDifferent | 1500 MHz6 Gbps effective | 1250 MHz5 Gbps effective |
| GPU ClockDifferent | N/A | 830 MHz |
Memory
| Feature | AMD Radeon HD 7990 | AMD Radeon HD 6990 |
|---|---|---|
| Memory SizeDifferent | 3 GB | 2 GB |
| Memory Type | GDDR5 | GDDR5 |
| Memory BusDifferent | 384 bit | 256 bit |
| BandwidthDifferent | 288.0 GB/s | 160.0 GB/s |
Render Config
| Feature | AMD Radeon HD 7990 | AMD Radeon HD 6990 |
|---|---|---|
| Shading UnitsDifferent | 2048 | 1536 |
| TMUsDifferent | 128 | 96 |
| ROPs | 32 | 32 |
| Compute UnitsDifferent | 32 | 24 |
| L1 CacheDifferent | 16 KB (per CU) | 8 KB (per CU) |
| L2 CacheDifferent | 768 KB | 512 KB |
Theoretical Performance
| Feature | AMD Radeon HD 7990 | AMD Radeon HD 6990 |
|---|---|---|
| Pixel RateDifferent | 32.00 GPixel/s | 26.56 GPixel/s |
| Texture RateDifferent | 128.0 GTexel/s | 79.68 GTexel/s |
| FP32 (float)Different | 4.096 TFLOPS | 2.550 TFLOPS |
| FP64 (double)Different | 1,024.0 GFLOPS (1:4) | 637.4 GFLOPS (1:4) |
Board Design
| Feature | AMD Radeon HD 7990 | AMD Radeon HD 6990 |
|---|---|---|
| Slot Width | Dual-slot | Dual-slot |
| LengthDifferent | 304 mm12 inches | 310 mm12.2 inches |
| HeightDifferent | 106 mm4.2 inches | 115 mm4.5 inches |
| WidthDifferent | 38 mm1.5 inches | 40 mm1.6 inches |
| TDP | 375 W | 375 W |
| Suggested PSU | 750 W | 750 W |
| Outputs | 1x DVI4x mini-DisplayPort 1.2 | 1x DVI4x mini-DisplayPort 1.2 |
| Power Connectors | 2x 8-pin | 2x 8-pin |
| Board NumberDifferent | 109-C47637-00A_02 | 109-C20647-00 |
Graphics Features
| Feature | AMD Radeon HD 7990 | 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 | 1.2.175 | N/A |
| Shader ModelDifferent | 6.5 (5.1) | 5.0 |
Comparison Summary
7
Specifications Compared
8
Feature Categories
48
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 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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