GPU Comparison
Side-by-side comparison of specifications and performance
Performance Comparison
AMD Radeon RX 6400
205%
205%
AMD Radeon HD 6950
49%
49%
AMD Radeon RX 6400 is approximately 156% faster
Technical Specifications
| Specification | AMD Radeon RX 6400 | AMD Radeon HD 6950 |
|---|---|---|
| Graphics ProcessorDifferent | Navi 24 | Cayman |
| CoresDifferent | 768 | 1408 |
| TMUsDifferent | 48 | 88 |
| 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 6950 |
|---|---|---|
| GPU NameDifferent | Navi 24 | Cayman |
| GPU VariantDifferent | Navi 24 XL(215-135000046) | Cayman PRO(215-0807019) |
| ArchitectureDifferent | RDNA 2.0 | TeraScale 3 |
| Foundry | TSMC | TSMC |
| Process SizeDifferent | 6 nm | 40 nm |
| TransistorsDifferent | 5,400 million | 2,640 million |
| DensityDifferent | 50.5M / mm² | 6.8M / mm² |
| Die SizeDifferent | 107 mm² | 389 mm² |
Graphics Card
| Feature | AMD Radeon RX 6400 | AMD Radeon HD 6950 |
|---|---|---|
| Release DateDifferent | Jan 19th, 2022 | Dec 14th, 2010 |
| AvailabilityDifferent | Apr 20th, 2022 | N/A |
| GenerationDifferent | Navi II(RX 6000) | Northern Islands(HD 6900) |
| PredecessorDifferent | Navi | Evergreen |
| SuccessorDifferent | Navi III | Southern Islands |
| ProductionDifferent | Active | End-of-life |
| Launch PriceDifferent | 159 USD | 299 USD |
| Bus InterfaceDifferent | PCIe 4.0 x4 | PCIe 2.0 x16 |
| ReviewsDifferent | N/A | 111 in our database |
Clock Speeds
| Feature | AMD Radeon RX 6400 | AMD Radeon HD 6950 |
|---|---|---|
| Base ClockDifferent | 1923 MHz | N/A |
| Game ClockDifferent | 2039 MHz | N/A |
| Boost ClockDifferent | 2321 MHz | N/A |
| Memory ClockDifferent | 2000 MHz16 Gbps effective | 1250 MHz5 Gbps effective |
| GPU ClockDifferent | N/A | 800 MHz |
Memory
| Feature | AMD Radeon RX 6400 | AMD Radeon HD 6950 |
|---|---|---|
| Memory SizeDifferent | 4 GB | 2 GB |
| Memory TypeDifferent | GDDR6 | GDDR5 |
| Memory BusDifferent | 64 bit | 256 bit |
| BandwidthDifferent | 128.0 GB/s | 160.0 GB/s |
Render Config
| Feature | AMD Radeon RX 6400 | AMD Radeon HD 6950 |
|---|---|---|
| Shading UnitsDifferent | 768 | 1408 |
| TMUsDifferent | 48 | 88 |
| ROPs | 32 | 32 |
| Compute UnitsDifferent | 12 | 22 |
| 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 6950 |
|---|---|---|
| Pixel RateDifferent | 74.27 GPixel/s | 25.60 GPixel/s |
| Texture RateDifferent | 111.4 GTexel/s | 70.40 GTexel/s |
| FP16 (half)Different | 7.130 TFLOPS (2:1) | N/A |
| FP32 (float)Different | 3.565 TFLOPS | 2.253 TFLOPS |
| FP64 (double)Different | 222.8 GFLOPS (1:16) | 563.2 GFLOPS (1:4) |
Board Design
| Feature | AMD Radeon RX 6400 | AMD Radeon HD 6950 |
|---|---|---|
| Slot WidthDifferent | Single-slot | Dual-slot |
| TDPDifferent | 53 W | 200 W |
| Suggested PSUDifferent | 250 W | 550 W |
| OutputsDifferent | 1x HDMI 2.11x DisplayPort 1.4a | 2x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2 |
| Power ConnectorsDifferent | None | 2x 6-pin |
| Board NumberDifferent | D634 | 109-C21647-00 |
| LengthDifferent | N/A | 286 mm11.3 inches |
| HeightDifferent | N/A | 126 mm5 inches |
| WidthDifferent | N/A | 42 mm1.7 inches |
Graphics Features
| Feature | AMD Radeon RX 6400 | AMD Radeon HD 6950 |
|---|---|---|
| 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
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
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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 6950
Compare AMD Radeon HD 6950 with other GPUs of similar performance
AMD Radeon HD 6950 vs Radeon RX 560
Radeon RX 560 Performance119%
Radeon RX 560 is 19% faster than AMD Radeon HD 6950
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AMD Radeon HD 6950 vs GeForce GTX 570
GeForce GTX 570 Performance117%
GeForce GTX 570 is 17% faster than AMD Radeon HD 6950
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AMD Radeon HD 6950 vs GeForce GTX 660
GeForce GTX 660 Performance117%
GeForce GTX 660 is 17% faster than AMD Radeon HD 6950
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AMD Radeon HD 6950 vs Radeon R7 370
Radeon R7 370 Performance116%
Radeon R7 370 is 16% faster than AMD Radeon HD 6950
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AMD Radeon HD 6950 vs Radeon HD 6970
Radeon HD 6970 Performance112%
Radeon HD 6970 is 12% faster than AMD Radeon HD 6950
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AMD Radeon HD 6950 vs GeForce GTX 480
GeForce GTX 480 Performance107%
GeForce GTX 480 is 7% faster than AMD Radeon HD 6950
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