GPU Comparison
Side-by-side comparison of specifications and performance
Performance Comparison
AMD Radeon RX 6400
85%
85%
AMD Radeon R9 390
128%
128%
AMD Radeon R9 390 is approximately 43% faster
Technical Specifications
| Specification | AMD Radeon RX 6400 | AMD Radeon R9 390 |
|---|---|---|
| Graphics ProcessorDifferent | Navi 24 | Grenada |
| CoresDifferent | 768 | 2560 |
| TMUsDifferent | 48 | 160 |
| ROPsDifferent | 32 | 64 |
| Memory SizeDifferent | 4 GB | 8 GB |
| Memory TypeDifferent | GDDR6 | GDDR5 |
| Bus WidthDifferent | 64 bit | 512 bit |
Graphics Processor
| Feature | AMD Radeon RX 6400 | AMD Radeon R9 390 |
|---|---|---|
| GPU NameDifferent | Navi 24 | Grenada |
| GPU VariantDifferent | Navi 24 XL(215-135000046) | Grenada PRO(215-0880030) |
| ArchitectureDifferent | RDNA 2.0 | GCN 2.0 |
| Foundry | TSMC | TSMC |
| Process SizeDifferent | 6 nm | 28 nm |
| TransistorsDifferent | 5,400 million | 6,200 million |
| DensityDifferent | 50.5M / mm² | 14.2M / mm² |
| Die SizeDifferent | 107 mm² | 438 mm² |
Graphics Card
| Feature | AMD Radeon RX 6400 | AMD Radeon R9 390 |
|---|---|---|
| Release DateDifferent | Jan 19th, 2022 | Jun 18th, 2015 |
| AvailabilityDifferent | Apr 20th, 2022 | N/A |
| GenerationDifferent | Navi II(RX 6000) | Pirate Islands(R9 300) |
| PredecessorDifferent | Navi | Volcanic Islands |
| SuccessorDifferent | Navi III | Arctic Islands |
| ProductionDifferent | Active | End-of-life |
| Launch PriceDifferent | 159 USD | 329 USD |
| Bus InterfaceDifferent | PCIe 4.0 x4 | PCIe 3.0 x16 |
| ReviewsDifferent | N/A | 35 in our database |
Clock Speeds
| Feature | AMD Radeon RX 6400 | AMD Radeon R9 390 |
|---|---|---|
| Base ClockDifferent | 1923 MHz | N/A |
| Game ClockDifferent | 2039 MHz | N/A |
| Boost ClockDifferent | 2321 MHz | N/A |
| Memory ClockDifferent | 2000 MHz16 Gbps effective | 1500 MHz6 Gbps effective |
| GPU ClockDifferent | N/A | 1000 MHz |
Memory
| Feature | AMD Radeon RX 6400 | AMD Radeon R9 390 |
|---|---|---|
| Memory SizeDifferent | 4 GB | 8 GB |
| Memory TypeDifferent | GDDR6 | GDDR5 |
| Memory BusDifferent | 64 bit | 512 bit |
| BandwidthDifferent | 128.0 GB/s | 384.0 GB/s |
Render Config
| Feature | AMD Radeon RX 6400 | AMD Radeon R9 390 |
|---|---|---|
| Shading UnitsDifferent | 768 | 2560 |
| TMUsDifferent | 48 | 160 |
| ROPsDifferent | 32 | 64 |
| Compute UnitsDifferent | 12 | 40 |
| RT CoresDifferent | 12 | N/A |
| L0 CacheDifferent | 32 KB per WGP | N/A |
| L1 CacheDifferent | 128 KB per Array | 16 KB (per CU) |
| L2 Cache | 1024 KB | 1024 KB |
| L3 CacheDifferent | 16 MB | N/A |
Theoretical Performance
| Feature | AMD Radeon RX 6400 | AMD Radeon R9 390 |
|---|---|---|
| Pixel RateDifferent | 74.27 GPixel/s | 64.00 GPixel/s |
| Texture RateDifferent | 111.4 GTexel/s | 160.0 GTexel/s |
| FP16 (half)Different | 7.130 TFLOPS (2:1) | N/A |
| FP32 (float)Different | 3.565 TFLOPS | 5.120 TFLOPS |
| FP64 (double)Different | 222.8 GFLOPS (1:16) | 640.0 GFLOPS (1:8) |
Board Design
| Feature | AMD Radeon RX 6400 | AMD Radeon R9 390 |
|---|---|---|
| Slot WidthDifferent | Single-slot | Dual-slot |
| TDPDifferent | 53 W | 275 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 | 109-C67157-00_02, C679 |
| 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 390 |
|---|---|---|
| DirectXDifferent | 12 Ultimate (12_2) | 12 (12_0) |
| OpenGL | 4.6 | 4.6 |
| OpenCLDifferent | 2.2 | 2.1 |
| VulkanDifferent | 1.3 | 1.2.170 |
| Shader ModelDifferent | 6.8 | 6.5 |
Comparison Summary
7
Specifications Compared
8
Feature Categories
54
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
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 R9 390
Compare AMD Radeon R9 390 with other GPUs of similar performance
AMD Radeon R9 390 vs Radeon R9 FURY
Radeon R9 FURY Performance120%
Radeon R9 FURY is 20% faster than AMD Radeon R9 390
Compare Detailed Specs
AMD Radeon R9 390 vs GeForce GTX 980
GeForce GTX 980 Performance118%
GeForce GTX 980 is 18% faster than AMD Radeon R9 390
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AMD Radeon R9 390 vs GeForce GTX 1650 SUPER
GeForce GTX 1650 SUPER Performance117%
GeForce GTX 1650 SUPER is 17% faster than AMD Radeon R9 390
Compare Detailed Specs
AMD Radeon R9 390 vs Radeon RX 6500 XT
Radeon RX 6500 XT Performance116%
Radeon RX 6500 XT is 16% faster than AMD Radeon R9 390
Compare Detailed Specs
AMD Radeon R9 390 vs Radeon RX 5500 XT
Radeon RX 5500 XT Performance115%
Radeon RX 5500 XT is 15% faster than AMD Radeon R9 390
Compare Detailed Specs
AMD Radeon R9 390 vs Radeon RX 580
Radeon RX 580 Performance114%
Radeon RX 580 is 14% faster than AMD Radeon R9 390
Compare Detailed Specs