GPU Comparison
Side-by-side comparison of specifications and performance
Performance Comparison
AMD Radeon RX 6400
114%
114%
AMD Radeon R9 280X
88%
88%
AMD Radeon RX 6400 is approximately 26% faster
Technical Specifications
| Specification | AMD Radeon RX 6400 | AMD Radeon R9 280X |
|---|---|---|
| Graphics ProcessorDifferent | Navi 24 | Tahiti |
| CoresDifferent | 768 | 2048 |
| TMUsDifferent | 48 | 128 |
| ROPs | 32 | 32 |
| Memory SizeDifferent | 4 GB | 3 GB |
| Memory TypeDifferent | GDDR6 | GDDR5 |
| Bus WidthDifferent | 64 bit | 384 bit |
Graphics Processor
| Feature | AMD Radeon RX 6400 | AMD Radeon R9 280X |
|---|---|---|
| GPU NameDifferent | Navi 24 | Tahiti |
| GPU VariantDifferent | Navi 24 XL(215-135000046) | Tahiti XTL(215-0821065) |
| ArchitectureDifferent | RDNA 2.0 | GCN 1.0 |
| Foundry | TSMC | TSMC |
| Process SizeDifferent | 6 nm | 28 nm |
| TransistorsDifferent | 5,400 million | 4,313 million |
| DensityDifferent | 50.5M / mm² | 12.3M / mm² |
| Die SizeDifferent | 107 mm² | 352 mm² |
Graphics Card
| Feature | AMD Radeon RX 6400 | AMD Radeon R9 280X |
|---|---|---|
| Release DateDifferent | Jan 19th, 2022 | Oct 8th, 2013 |
| AvailabilityDifferent | Apr 20th, 2022 | N/A |
| GenerationDifferent | Navi II(RX 6000) | Volcanic Islands(R9 200) |
| PredecessorDifferent | Navi | Sea Islands |
| SuccessorDifferent | Navi III | Pirate Islands |
| ProductionDifferent | Active | End-of-life |
| Launch PriceDifferent | 159 USD | 299 USD |
| Bus InterfaceDifferent | PCIe 4.0 x4 | PCIe 3.0 x16 |
| ReviewsDifferent | N/A | 105 in our database |
Clock Speeds
| Feature | AMD Radeon RX 6400 | AMD Radeon R9 280X |
|---|---|---|
| Base ClockDifferent | 1923 MHz | 850 MHz |
| Game ClockDifferent | 2039 MHz | N/A |
| Boost ClockDifferent | 2321 MHz | 1000 MHz |
| Memory ClockDifferent | 2000 MHz16 Gbps effective | 1500 MHz6 Gbps effective |
Memory
| Feature | AMD Radeon RX 6400 | AMD Radeon R9 280X |
|---|---|---|
| Memory SizeDifferent | 4 GB | 3 GB |
| Memory TypeDifferent | GDDR6 | GDDR5 |
| Memory BusDifferent | 64 bit | 384 bit |
| BandwidthDifferent | 128.0 GB/s | 288.0 GB/s |
Render Config
| Feature | AMD Radeon RX 6400 | AMD Radeon R9 280X |
|---|---|---|
| Shading UnitsDifferent | 768 | 2048 |
| TMUsDifferent | 48 | 128 |
| ROPs | 32 | 32 |
| Compute UnitsDifferent | 12 | 32 |
| RT CoresDifferent | 12 | N/A |
| L0 CacheDifferent | 32 KB per WGP | N/A |
| L1 CacheDifferent | 128 KB per Array | 16 KB (per CU) |
| L2 CacheDifferent | 1024 KB | 768 KB |
| L3 CacheDifferent | 16 MB | N/A |
Theoretical Performance
| Feature | AMD Radeon RX 6400 | AMD Radeon R9 280X |
|---|---|---|
| Pixel RateDifferent | 74.27 GPixel/s | 32.00 GPixel/s |
| Texture RateDifferent | 111.4 GTexel/s | 128.0 GTexel/s |
| FP16 (half)Different | 7.130 TFLOPS (2:1) | N/A |
| FP32 (float)Different | 3.565 TFLOPS | 4.096 TFLOPS |
| FP64 (double)Different | 222.8 GFLOPS (1:16) | 1,024.0 GFLOPS (1:4) |
Board Design
| Feature | AMD Radeon RX 6400 | AMD Radeon R9 280X |
|---|---|---|
| Slot WidthDifferent | Single-slot | Dual-slot |
| TDPDifferent | 53 W | 250 W |
| Suggested PSUDifferent | 250 W | 600 W |
| OutputsDifferent | 1x HDMI 2.11x DisplayPort 1.4a | 2x DVI1x HDMI 1.4a1x DisplayPort 1.2 |
| Power ConnectorsDifferent | None | 1x 6-pin + 1x 8-pin |
| Board NumberDifferent | D634 | C386 |
| LengthDifferent | N/A | 275 mm10.8 inches |
| HeightDifferent | N/A | 109 mm4.3 inches |
| WidthDifferent | N/A | 36 mm1.4 inches |
Graphics Features
| Feature | AMD Radeon RX 6400 | AMD Radeon R9 280X |
|---|---|---|
| DirectXDifferent | 12 Ultimate (12_2) | 12 (11_1) |
| OpenGL | 4.6 | 4.6 |
| OpenCLDifferent | 2.2 | 2.1 (1.2) |
| VulkanDifferent | 1.3 | 1.2.170 |
| Shader ModelDifferent | 6.8 | 6.5 (5.1) |
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
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AMD Radeon RX 6400 vs Radeon R9 390
Radeon R9 390 Performance117%
Radeon R9 390 is 17% faster than AMD Radeon RX 6400
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AMD Radeon RX 6400 vs Radeon RX 570
Radeon RX 570 Performance116%
Radeon RX 570 is 16% faster than AMD Radeon RX 6400
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AMD Radeon RX 6400 vs Radeon R9 290
Radeon R9 290 Performance110%
Radeon R9 290 is 10% faster than AMD Radeon RX 6400
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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 R9 280X
Compare AMD Radeon R9 280X with other GPUs of similar performance
AMD Radeon R9 280X vs GeForce GTX 1650
GeForce GTX 1650 Performance116%
GeForce GTX 1650 is 16% faster than AMD Radeon R9 280X
Compare Detailed Specs
AMD Radeon R9 280X vs Radeon RX 6400
Radeon RX 6400 Performance114%
Radeon RX 6400 is 14% faster than AMD Radeon R9 280X
Compare Detailed Specs
AMD Radeon R9 280X vs Arc A380
Arc A380 Performance113%
Arc A380 is 13% faster than AMD Radeon R9 280X
Compare Detailed Specs
AMD Radeon R9 280X vs GeForce GTX 780
GeForce GTX 780 Performance112%
GeForce GTX 780 is 12% faster than AMD Radeon R9 280X
Compare Detailed Specs
AMD Radeon R9 280X vs Radeon HD 7970 GHz Edition
Radeon HD 7970 GHz Edition Performance102%
Radeon HD 7970 GHz Edition is 2% faster than AMD Radeon R9 280X
Compare Detailed Specs
AMD Radeon R9 280X vs GeForce GTX 590
GeForce GTX 590 Performance101%
GeForce GTX 590 is 1% faster than AMD Radeon R9 280X
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