GPU Comparison
Side-by-side comparison of specifications and performance
Performance Comparison
AMD Radeon RX 6600
200%
200%
AMD Radeon HD 7990
56%
56%
AMD Radeon RX 6600 is approximately 144% faster
Technical Specifications
| Specification | AMD Radeon RX 6600 | AMD Radeon HD 7990 |
|---|---|---|
| Graphics ProcessorDifferent | Navi 23 | Malta x2 |
| CoresDifferent | 1792 | 2048 x2 |
| TMUsDifferent | 112 | 128 x2 |
| ROPsDifferent | 64 | 32 x2 |
| Memory SizeDifferent | 8 GB | 3 GB x2 |
| Memory TypeDifferent | GDDR6 | GDDR5 |
| Bus WidthDifferent | 128 bit | 384 bit x2 |
Graphics Processor
| Feature | AMD Radeon RX 6600 | AMD Radeon HD 7990 |
|---|---|---|
| GPU NameDifferent | Navi 23 | Malta |
| GPU VariantDifferent | Navi 23 XL(215-130000016) | Malta XT(215-0849026) |
| ArchitectureDifferent | RDNA 2.0 | GCN 1.0 |
| Foundry | TSMC | TSMC |
| Process SizeDifferent | 7 nm | 28 nm |
| TransistorsDifferent | 11,060 million | 4,313 million |
| DensityDifferent | 46.7M / mm² | 11.8M / mm² |
| Die SizeDifferent | 237 mm² | 365 mm² |
| Chip PackageDifferent | BGA-1269 | N/A |
Graphics Card
| Feature | AMD Radeon RX 6600 | AMD Radeon HD 7990 |
|---|---|---|
| Release DateDifferent | Oct 13th, 2021 | Apr 24th, 2013 |
| GenerationDifferent | Navi II(RX 6000) | Southern Islands(HD 7900) |
| PredecessorDifferent | Navi | Northern Islands |
| SuccessorDifferent | Navi III | Sea Islands |
| ProductionDifferent | Active | End-of-life |
| Launch PriceDifferent | 329 USD | 999 USD |
| Current PriceDifferent | Amazon/Newegg | N/A |
| Bus InterfaceDifferent | PCIe 4.0 x8 | PCIe 3.0 x16 |
| ReviewsDifferent | 21 in our database | 37 in our database |
Clock Speeds
| Feature | AMD Radeon RX 6600 | AMD Radeon HD 7990 |
|---|---|---|
| Base ClockDifferent | 1626 MHz | 950 MHz |
| Game ClockDifferent | 2044 MHz | N/A |
| Boost ClockDifferent | 2491 MHz | 1000 MHz |
| Memory ClockDifferent | 1750 MHz14 Gbps effective | 1500 MHz6 Gbps effective |
Memory
| Feature | AMD Radeon RX 6600 | AMD Radeon HD 7990 |
|---|---|---|
| Memory SizeDifferent | 8 GB | 3 GB |
| Memory TypeDifferent | GDDR6 | GDDR5 |
| Memory BusDifferent | 128 bit | 384 bit |
| BandwidthDifferent | 224.0 GB/s | 288.0 GB/s |
Render Config
| Feature | AMD Radeon RX 6600 | AMD Radeon HD 7990 |
|---|---|---|
| Shading UnitsDifferent | 1792 | 2048 |
| TMUsDifferent | 112 | 128 |
| ROPsDifferent | 64 | 32 |
| Compute UnitsDifferent | 28 | 32 |
| RT CoresDifferent | 28 | N/A |
| L0 CacheDifferent | 32 KB per WGP | N/A |
| L1 CacheDifferent | 128 KB per Array | 16 KB (per CU) |
| L2 CacheDifferent | 2 MB | 768 KB |
| L3 CacheDifferent | 32 MB | N/A |
Theoretical Performance
| Feature | AMD Radeon RX 6600 | AMD Radeon HD 7990 |
|---|---|---|
| Pixel RateDifferent | 159.4 GPixel/s | 32.00 GPixel/s |
| Texture RateDifferent | 279.0 GTexel/s | 128.0 GTexel/s |
| FP16 (half)Different | 17.86 TFLOPS (2:1) | N/A |
| FP32 (float)Different | 8.928 TFLOPS | 4.096 TFLOPS |
| FP64 (double)Different | 558.0 GFLOPS (1:16) | 1,024.0 GFLOPS (1:4) |
Board Design
| Feature | AMD Radeon RX 6600 | AMD Radeon HD 7990 |
|---|---|---|
| Slot Width | Dual-slot | Dual-slot |
| LengthDifferent | 190 mm7.5 inches | 304 mm12 inches |
| HeightDifferent | 110 mm4.3 inches | 106 mm4.2 inches |
| WidthDifferent | 40 mm1.6 inches | 38 mm1.5 inches |
| TDPDifferent | 132 W | 375 W |
| Suggested PSUDifferent | 300 W | 750 W |
| OutputsDifferent | 1x HDMI 2.13x DisplayPort 1.4a | 1x DVI4x mini-DisplayPort 1.2 |
| Power ConnectorsDifferent | 1x 8-pin | 2x 8-pin |
| Board NumberDifferent | D532 | 109-C47637-00A_02 |
Graphics Features
| Feature | AMD Radeon RX 6600 | AMD Radeon HD 7990 |
|---|---|---|
| DirectXDifferent | 12 Ultimate (12_2) | 12 (11_1) |
| OpenGL | 4.6 | 4.6 |
| OpenCLDifferent | 2.1 | 2.1 (1.2) |
| VulkanDifferent | 1.3 | 1.2.175 |
| Shader ModelDifferent | 6.8 | 6.5 (5.1) |
Comparison Summary
7
Specifications Compared
8
Feature Categories
54
Detailed Features
More Comparisons with AMD Radeon RX 6600
Compare AMD Radeon RX 6600 with other GPUs of similar performance
AMD Radeon RX 6600 vs GeForce RTX 2070 SUPER
GeForce RTX 2070 SUPER Performance118%
GeForce RTX 2070 SUPER is 18% faster than AMD Radeon RX 6600
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AMD Radeon RX 6600 vs GeForce GTX 1080 Ti
GeForce GTX 1080 Ti Performance117%
GeForce GTX 1080 Ti is 17% faster than AMD Radeon RX 6600
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AMD Radeon RX 6600 vs Arc A770
Arc A770 Performance117%
Arc A770 is 17% faster than AMD Radeon RX 6600
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AMD Radeon RX 6600 vs GeForce RTX 3060 12 GB
GeForce RTX 3060 12 GB Performance113%
GeForce RTX 3060 12 GB is 13% faster than AMD Radeon RX 6600
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AMD Radeon RX 6600 vs Radeon RX 6600 XT
Radeon RX 6600 XT Performance111%
Radeon RX 6600 XT is 11% faster than AMD Radeon RX 6600
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AMD Radeon RX 6600 vs Radeon VII
Radeon VII Performance111%
Radeon VII is 11% faster than AMD Radeon RX 6600
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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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