GPU Comparison
Side-by-side comparison of specifications and performance
Performance Comparison
AMD Radeon RX 6400
195%
195%
AMD Radeon HD 7850
51%
51%
AMD Radeon RX 6400 is approximately 144% faster
Technical Specifications
| Specification | AMD Radeon RX 6400 | AMD Radeon HD 7850 |
|---|---|---|
| Graphics ProcessorDifferent | Navi 24 | Pitcairn |
| CoresDifferent | 768 | 1024 |
| TMUsDifferent | 48 | 64 |
| ROPs | 32 | 32 |
| Memory SizeDifferent | 4 GB | 2 GB |
| Memory TypeDifferent | GDDR6 | GDDR5 |
| Bus WidthDifferent | 64 bit | 256 bit |
Graphics Processor
| Feature | AMD Radeon RX 6400 | AMD Radeon HD 7850 |
|---|---|---|
| GPU NameDifferent | Navi 24 | Pitcairn |
| GPU VariantDifferent | Navi 24 XL(215-135000046) | Pitcairn PRO(215-0828062) |
| ArchitectureDifferent | RDNA 2.0 | GCN 1.0 |
| Foundry | TSMC | TSMC |
| Process SizeDifferent | 6 nm | 28 nm |
| TransistorsDifferent | 5,400 million | 2,800 million |
| DensityDifferent | 50.5M / mm² | 13.2M / mm² |
| Die SizeDifferent | 107 mm² | 212 mm² |
| Chip PackageDifferent | N/A | FCBGA-1737 |
Graphics Card
| Feature | AMD Radeon RX 6400 | AMD Radeon HD 7850 |
|---|---|---|
| Release DateDifferent | Jan 19th, 2022 | Mar 5th, 2012 |
| AvailabilityDifferent | Apr 20th, 2022 | N/A |
| GenerationDifferent | Navi II(RX 6000) | Southern Islands(HD 7800) |
| PredecessorDifferent | Navi | Northern Islands |
| SuccessorDifferent | Navi III | Sea Islands |
| ProductionDifferent | Active | End-of-life |
| Launch PriceDifferent | 159 USD | 249 USD |
| Bus InterfaceDifferent | PCIe 4.0 x4 | PCIe 3.0 x16 |
| ReviewsDifferent | N/A | 71 in our database |
Clock Speeds
| Feature | AMD Radeon RX 6400 | AMD Radeon HD 7850 |
|---|---|---|
| Base ClockDifferent | 1923 MHz | N/A |
| Game ClockDifferent | 2039 MHz | N/A |
| Boost ClockDifferent | 2321 MHz | N/A |
| Memory ClockDifferent | 2000 MHz16 Gbps effective | 1200 MHz4.8 Gbps effective |
| GPU ClockDifferent | N/A | 860 MHz |
Memory
| Feature | AMD Radeon RX 6400 | AMD Radeon HD 7850 |
|---|---|---|
| Memory SizeDifferent | 4 GB | 2 GB |
| Memory TypeDifferent | GDDR6 | GDDR5 |
| Memory BusDifferent | 64 bit | 256 bit |
| BandwidthDifferent | 128.0 GB/s | 153.6 GB/s |
Render Config
| Feature | AMD Radeon RX 6400 | AMD Radeon HD 7850 |
|---|---|---|
| Shading UnitsDifferent | 768 | 1024 |
| TMUsDifferent | 48 | 64 |
| ROPs | 32 | 32 |
| Compute UnitsDifferent | 12 | 16 |
| 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 | 512 KB |
| L3 CacheDifferent | 16 MB | N/A |
Theoretical Performance
| Feature | AMD Radeon RX 6400 | AMD Radeon HD 7850 |
|---|---|---|
| Pixel RateDifferent | 74.27 GPixel/s | 27.52 GPixel/s |
| Texture RateDifferent | 111.4 GTexel/s | 55.04 GTexel/s |
| FP16 (half)Different | 7.130 TFLOPS (2:1) | N/A |
| FP32 (float)Different | 3.565 TFLOPS | 1.761 TFLOPS |
| FP64 (double)Different | 222.8 GFLOPS (1:16) | 110.1 GFLOPS (1:16) |
Board Design
| Feature | AMD Radeon RX 6400 | AMD Radeon HD 7850 |
|---|---|---|
| Slot WidthDifferent | Single-slot | Dual-slot |
| TDPDifferent | 53 W | 130 W |
| Suggested PSUDifferent | 250 W | 300 W |
| OutputsDifferent | 1x HDMI 2.11x DisplayPort 1.4a | 1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2 |
| Power ConnectorsDifferent | None | 1x 6-pin |
| Board NumberDifferent | D634 | 109-C40147-00, 109-C40337-00A |
| LengthDifferent | N/A | 210 mm8.3 inches |
Graphics Features
| Feature | AMD Radeon RX 6400 | AMD Radeon HD 7850 |
|---|---|---|
| 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
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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
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More Comparisons with AMD Radeon HD 7850
Compare AMD Radeon HD 7850 with other GPUs of similar performance
AMD Radeon HD 7850 vs GeForce GTX 950
GeForce GTX 950 Performance120%
GeForce GTX 950 is 20% faster than AMD Radeon HD 7850
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AMD Radeon HD 7850 vs Radeon RX 560
Radeon RX 560 Performance113%
Radeon RX 560 is 13% faster than AMD Radeon HD 7850
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AMD Radeon HD 7850 vs GeForce GTX 570
GeForce GTX 570 Performance111%
GeForce GTX 570 is 11% faster than AMD Radeon HD 7850
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AMD Radeon HD 7850 vs GeForce GTX 660
GeForce GTX 660 Performance111%
GeForce GTX 660 is 11% faster than AMD Radeon HD 7850
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AMD Radeon HD 7850 vs Radeon R7 370
Radeon R7 370 Performance110%
Radeon R7 370 is 10% faster than AMD Radeon HD 7850
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AMD Radeon HD 7850 vs Radeon HD 6970
Radeon HD 6970 Performance106%
Radeon HD 6970 is 6% faster than AMD Radeon HD 7850
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