Radeon RX 780 vs Radeon RX 6400
Radeon RX 780
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Radeon RX 6400
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Performance Spectrum - GPU
About G3D Mark
G3D Mark is a standard benchmark that measures graphics performance in real-world gaming scenarios. It simplifies comparing cards from different brands, where higher scores directly correlate with better fps and smoother gaming experiences.
Value Upgrade Path
This is the official ChipVERSUS Value Rating, comparing raw performance (G3D Mark) per dollar. The Radeon RX 780 is positioned at rank #296 in our cost-efficiency ranking, representing a Lower cost-benefit for your build. Components placed above yours deliver better value for money.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Radeon RX 780
Performance Per Dollar Radeon RX 6400
Performance Comparison
About G3D Mark🏆 Chipversus Verdict
🚀 Performance Leadership
The Radeon RX 6400 is the superior choice for raw performance. It leads with a 0.9% higher G3D Mark score. This advantage makes it significantly better for higher resolutions (1440p/4K) and graphic-intensive titles compared to the Radeon RX 780.
| Insight | Radeon RX 780 | Radeon RX 6400 |
|---|---|---|
| Performance | ❌Lower raw frame rates (-0.9%) | ✅Leading raw performance (+0.9%) |
| Longevity | 🏆Elite Architecture (RDNA 3.0 (2022−2026) / 5nm) | RDNA 2.0 (2020−2025) (6nm) |
| Ecosystem | ✨ FSR 3 / AFMF Support | Supports FSR Upscaling |
| VRAM | ❌ Less VRAM capacity | ✅ More VRAM (+0%) |
| Efficiency | ⚡ Higher Power Consumption | 💡 Excellent Perf/Watt |
| Case Fit | — | 📏 Compact / SFF Friendly |
💎 Value Proposition
The Radeon RX 6400 offers a compelling cost-to-performance ratio. Priced at $139 versus $721 for the Radeon RX 780, it costs 81% less. While it maintains competitive performance, this results in a 423.4% higher cost efficiency score.
| Insight | Radeon RX 780 | Radeon RX 6400 |
|---|---|---|
| Cost Efficiency | ❌Lower cost efficiency | ✅Better overall value (+423.4%) |
| Upfront Cost | ⚠️Higher upfront cost ($721) | ✅More affordable ($139) |
Performance Check
Real-world benchmarks and performance projections based on comprehensive hardware analysis and comparative metrics. Values represent expected performance on High/Ultra settings at 1080p, 1440p, and 4K. Modeled using a Ryzen 7 7800X3D reference profile to minimize specific CPU bottlenecks.
Note: Performance behavior can vary per game. Specific architectures may perform better or worse depending on game engine optimizations and API implementation.
Technical Specifications
Side-by-side comparison of Radeon RX 780 and Radeon RX 6400
Radeon RX 780
The Radeon RX 780 is manufactured by AMD. It was released in September 11 2024. It features the RDNA 3.0 architecture. The core clock ranges from 1295 MHz to 2335 MHz. It has 3840 shading units. The thermal design power (TDP) is 180W. Manufactured using 5 nm process technology. It features 60 dedicated ray tracing cores for enhanced lighting effects. G3D Mark benchmark score: 7,658 points.
Radeon RX 6400
The Radeon RX 6400 is manufactured by AMD. It was released in January 19 2022. It features the RDNA 2.0 architecture. The core clock ranges from 1923 MHz to 2321 MHz. It has 768 shading units. The thermal design power (TDP) is 53W. Manufactured using 6 nm process technology. It features 12 dedicated ray tracing cores for enhanced lighting effects. G3D Mark benchmark score: 7,728 points. Launch price was $159.
Graphics Performance
The Radeon RX 780 scores 7,658 and the Radeon RX 6400 reaches 7,728 in the G3D Mark benchmark — just a 0.9% difference, making them near-identical in rasterization performance. The Radeon RX 780 is built on RDNA 3.0 while the Radeon RX 6400 uses RDNA 2.0, both on 5 nm vs 6 nm. Shader units: 3,840 (Radeon RX 780) vs 768 (Radeon RX 6400). Raw compute: 35.87 TFLOPS (Radeon RX 780) vs 3.565 TFLOPS (Radeon RX 6400). Boost clocks: 2335 MHz vs 2321 MHz. Ray tracing: 60 RT cores (Radeon RX 780) vs 12 (Radeon RX 6400).
| Feature | Radeon RX 780 | Radeon RX 6400 |
|---|---|---|
| G3D Mark Score | 7,658 | 7,728 |
| Architecture | RDNA 3.0 | RDNA 2.0 |
| Process Node | 5 nm | 6 nm |
| Shading Units | 3840+400% | 768 |
| Compute (TFLOPS) | 35.87 TFLOPS+906% | 3.565 TFLOPS |
| Boost Clock | 2335 MHz | 2321 MHz |
| ROPs | 96+200% | 32 |
| TMUs | 240+400% | 48 |
| L1 Cache | 768 KB+200% | 256 KB |
| L2 Cache | 4 MB+300% | 1 MB |
| Ray Tracing Cores | 60+400% | 12 |
Advanced Features (DLSS/FSR)
Both cards support modern Frame Generation technology, allowing them to insert intermediate frames to smoothen motion and boost perceived FPS in supported games.
| Feature | Radeon RX 780 | Radeon RX 6400 |
|---|---|---|
| Upscaling Tech | FSR 3 (Native) | FSR 3 (Native) |
| Frame Generation | FSR 3 / AFMF (Driver) | FSR 3 / AFMF (Driver) |
| Ray Reconstruction | No | No |
| Low Latency | AMD Anti-Lag | AMD Anti-Lag |
Video Memory (VRAM)
Both cards feature 4 GB of video memory. Bus width: System vs 64-bit. L2 Cache: 4 MB (Radeon RX 780) vs 1 MB (Radeon RX 6400) — the Radeon RX 780 has significantly larger on-die cache to reduce VRAM reliance.
| Feature | Radeon RX 780 | Radeon RX 6400 |
|---|---|---|
| VRAM Capacity | 4 GB | 4 GB |
| Memory Type | Shared | GDDR6 |
| Memory Bandwidth | System | 128 GB/s |
| Bus Width | System | 64-bit |
| L2 Cache | 4 MB+300% | 1 MB |
Display & API Support
DirectX support: 12 (12_2) (Radeon RX 780) vs 12.2 (Radeon RX 6400). Vulkan: 1.4 vs 1.3. OpenGL: 4.6 vs 4.6. Maximum simultaneous displays: 4 vs 2.
| Feature | Radeon RX 780 | Radeon RX 6400 |
|---|---|---|
| DirectX | 12 (12_2) | 12.2+2% |
| Vulkan | 1.4+8% | 1.3 |
| OpenGL | 4.6 | 4.6 |
| Max Displays | 4+100% | 2 |
Media & Encoding
Hardware encoder: RDNA 3 Dual Media Engine (Radeon RX 780) vs None (Radeon RX 6400). Decoder: VCN 4.0 vs VCN 3.0 (Limited). Supported codecs: H.264,HEVC,VP9,AV1 (Radeon RX 780) vs MPEG-2,H.264 (Decode),HEVC (Decode) (Radeon RX 6400).
| Feature | Radeon RX 780 | Radeon RX 6400 |
|---|---|---|
| Encoder | RDNA 3 Dual Media Engine | None |
| Decoder | VCN 4.0 | VCN 3.0 (Limited) |
| Codecs | H.264,HEVC,VP9,AV1 | MPEG-2,H.264 (Decode),HEVC (Decode) |
Power & Dimensions
The Radeon RX 780 draws 180W versus the Radeon RX 6400's 53W — a 109% difference. The Radeon RX 6400 is more power-efficient. Recommended PSU: 350W (Radeon RX 780) vs 350W (Radeon RX 6400). Power connectors: PCIe-powered vs None. Typical load temperature: 85°C vs 75°C.
| Feature | Radeon RX 780 | Radeon RX 6400 |
|---|---|---|
| TDP | 180W | 53W-71% |
| Recommended PSU | 350W | 350W |
| Power Connector | PCIe-powered | None |
| Length | — | 172mm |
| Height | — | 112mm |
| Slots | 0-100% | 1 |
| Temp (Load) | 85°C | 75°C-12% |
| Perf/Watt | 42.5 | 145.8+243% |
Value Analysis
The Radeon RX 780 launched at $499 MSRP and currently averages $721, while the Radeon RX 6400 launched at $159 and now averages $139. The Radeon RX 6400 costs 80.7% less ($582 savings) at current market prices. Performance per dollar (G3D Mark / price): 10.6 (Radeon RX 780) vs 55.6 (Radeon RX 6400) — the Radeon RX 6400 offers 424.5% better value. The Radeon RX 780 is the newer GPU (2024 vs 2022).
| Feature | Radeon RX 780 | Radeon RX 6400 |
|---|---|---|
| MSRP | $499 | $159-68% |
| Avg Price (30d) | $721 | $139-81% |
| Performance per Dollar | 10.6 | 55.6+425% |
| Codename | Navi 32 | Navi 24 |
| Release | September 11 2024 | January 19 2022 |
| Ranking | #131 | #330 |
Top Performing GPUs
The most powerful gpus ranked by G3D Mark benchmark scores.
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