GPU Comparison
Side-by-side comparison of specifications and performance
Performance Comparison
AMD Radeon RX 6400
326%
326%
AMD Radeon HD 6790
31%
31%
AMD Radeon RX 6400 is approximately 295% faster
Technical Specifications
| Specification | AMD Radeon RX 6400 | AMD Radeon HD 6790 |
|---|---|---|
| Graphics ProcessorDifferent | Navi 24 | Barts |
| CoresDifferent | 768 | 800 |
| TMUsDifferent | 48 | 40 |
| ROPsDifferent | 32 | 16 |
| Memory SizeDifferent | 4 GB | 1024 MB |
| Memory TypeDifferent | GDDR6 | GDDR5 |
| Bus WidthDifferent | 64 bit | 256 bit |
Graphics Processor
| Feature | AMD Radeon RX 6400 | AMD Radeon HD 6790 |
|---|---|---|
| GPU NameDifferent | Navi 24 | Barts |
| GPU VariantDifferent | Navi 24 XL(215-135000046) | Barts LE(215-0798002) |
| ArchitectureDifferent | RDNA 2.0 | TeraScale 2 |
| Foundry | TSMC | TSMC |
| Process SizeDifferent | 6 nm | 40 nm |
| TransistorsDifferent | 5,400 million | 1,700 million |
| DensityDifferent | 50.5M / mm² | 6.7M / mm² |
| Die SizeDifferent | 107 mm² | 255 mm² |
| Chip PackageDifferent | N/A | HFCBGA-1737 |
Graphics Card
| Feature | AMD Radeon RX 6400 | AMD Radeon HD 6790 |
|---|---|---|
| Release DateDifferent | Jan 19th, 2022 | Apr 4th, 2011 |
| AvailabilityDifferent | Apr 20th, 2022 | N/A |
| GenerationDifferent | Navi II(RX 6000) | Northern Islands(HD 6700) |
| PredecessorDifferent | Navi | Evergreen |
| SuccessorDifferent | Navi III | Southern Islands |
| ProductionDifferent | Active | End-of-life |
| Launch PriceDifferent | 159 USD | 149 USD |
| Bus InterfaceDifferent | PCIe 4.0 x4 | PCIe 2.0 x16 |
| ReviewsDifferent | N/A | 37 in our database |
Clock Speeds
| Feature | AMD Radeon RX 6400 | AMD Radeon HD 6790 |
|---|---|---|
| Base ClockDifferent | 1923 MHz | N/A |
| Game ClockDifferent | 2039 MHz | N/A |
| Boost ClockDifferent | 2321 MHz | N/A |
| Memory ClockDifferent | 2000 MHz16 Gbps effective | 1050 MHz4.2 Gbps effective |
| GPU ClockDifferent | N/A | 840 MHz |
Memory
| Feature | AMD Radeon RX 6400 | AMD Radeon HD 6790 |
|---|---|---|
| Memory SizeDifferent | 4 GB | 1024 MB |
| Memory TypeDifferent | GDDR6 | GDDR5 |
| Memory BusDifferent | 64 bit | 256 bit |
| BandwidthDifferent | 128.0 GB/s | 134.4 GB/s |
Render Config
| Feature | AMD Radeon RX 6400 | AMD Radeon HD 6790 |
|---|---|---|
| Shading UnitsDifferent | 768 | 800 |
| TMUsDifferent | 48 | 40 |
| ROPsDifferent | 32 | 16 |
| Compute UnitsDifferent | 12 | 10 |
| RT CoresDifferent | 12 | N/A |
| L0 CacheDifferent | 32 KB per WGP | N/A |
| L1 CacheDifferent | 128 KB per Array | 8 KB (per CU) |
| L2 CacheDifferent | 1024 KB | 512 KB |
| L3 CacheDifferent | 16 MB | N/A |
Theoretical Performance
| Feature | AMD Radeon RX 6400 | AMD Radeon HD 6790 |
|---|---|---|
| Pixel RateDifferent | 74.27 GPixel/s | 13.44 GPixel/s |
| Texture RateDifferent | 111.4 GTexel/s | 33.60 GTexel/s |
| FP16 (half)Different | 7.130 TFLOPS (2:1) | N/A |
| FP32 (float)Different | 3.565 TFLOPS | 1,344.0 GFLOPS |
| FP64 (double)Different | 222.8 GFLOPS (1:16) | N/A |
Board Design
| Feature | AMD Radeon RX 6400 | AMD Radeon HD 6790 |
|---|---|---|
| Slot WidthDifferent | Single-slot | Dual-slot |
| TDPDifferent | 53 W | 150 W |
| Suggested PSUDifferent | 250 W | 450 W |
| OutputsDifferent | 1x HDMI 2.11x DisplayPort 1.4a | 2x DVI1x HDMI 1.3a1x DisplayPort 1.1 |
| Power ConnectorsDifferent | None | 2x 6-pin |
| Board NumberDifferent | D634 | C220, 109-C22237-00 |
| LengthDifferent | N/A | 198 mm7.8 inches |
Graphics Features
| Feature | AMD Radeon RX 6400 | AMD Radeon HD 6790 |
|---|---|---|
| DirectXDifferent | 12 Ultimate (12_2) | 11.2 (11_0) |
| OpenGLDifferent | 4.6 | 4.4 |
| OpenCLDifferent | 2.2 | 1.2 |
| VulkanDifferent | 1.3 | N/A |
| Shader ModelDifferent | 6.8 | 5.0 |
Comparison Summary
7
Specifications Compared
8
Feature Categories
53
Detailed Features
More Comparisons with AMD Radeon RX 6400
Compare AMD Radeon RX 6400 with other GPUs of similar performance
AMD Radeon RX 6400 vs GeForce GTX 970
GeForce GTX 970 Performance119%
GeForce GTX 970 is 19% faster than AMD Radeon RX 6400
Compare Detailed Specs
AMD Radeon RX 6400 vs Radeon R9 290X
Radeon R9 290X Performance119%
Radeon R9 290X is 19% faster than AMD Radeon RX 6400
Compare Detailed Specs
AMD Radeon RX 6400 vs Radeon R9 390
Radeon R9 390 Performance117%
Radeon R9 390 is 17% faster than AMD Radeon RX 6400
Compare Detailed Specs
AMD Radeon RX 6400 vs Radeon RX 570
Radeon RX 570 Performance116%
Radeon RX 570 is 16% faster than AMD Radeon RX 6400
Compare Detailed Specs
AMD Radeon RX 6400 vs Radeon R9 290
Radeon R9 290 Performance110%
Radeon R9 290 is 10% faster than AMD Radeon RX 6400
Compare Detailed Specs
AMD Radeon RX 6400 vs Radeon RX 470
Radeon RX 470 Performance108%
Radeon RX 470 is 8% faster than AMD Radeon RX 6400
Compare Detailed Specs
More Comparisons with AMD Radeon HD 6790
Compare AMD Radeon HD 6790 with other GPUs of similar performance
AMD Radeon HD 6790 vs GeForce GTX 285
GeForce GTX 285 Performance119%
GeForce GTX 285 is 19% faster than AMD Radeon HD 6790
Compare Detailed Specs
AMD Radeon HD 6790 vs Radeon HD 6850
Radeon HD 6850 Performance116%
Radeon HD 6850 is 16% faster than AMD Radeon HD 6790
Compare Detailed Specs
AMD Radeon HD 6790 vs GeForce GTX 280
GeForce GTX 280 Performance109%
GeForce GTX 280 is 9% faster than AMD Radeon HD 6790
Compare Detailed Specs
AMD Radeon HD 6790 vs Radeon HD 7770 GHz Edition
Radeon HD 7770 GHz Edition Performance109%
Radeon HD 7770 GHz Edition is 9% faster than AMD Radeon HD 6790
Compare Detailed Specs
AMD Radeon HD 6790 vs GeForce GTX 275
GeForce GTX 275 Performance108%
GeForce GTX 275 is 8% faster than AMD Radeon HD 6790
Compare Detailed Specs
AMD Radeon HD 6790 vs GeForce GTX 460
GeForce GTX 460 Performance106%
GeForce GTX 460 is 6% faster than AMD Radeon HD 6790
Compare Detailed Specs