GPU Comparison
Select up to 2 GPUs to analyze their pricing, performance, and specifications side-by-side.
Market Value Leader
It's a tight race! Both the Radeon RX 6400 and the Radeon RX 6800 XT offer nearly identical market value.
The Radeon RX 6800 XT is dramatically faster than the Radeon RX 6400, leading by roughly 517% in our performance index. The Radeon RX 6400, however, delivers more performance per dollar — $8,012 BRL cheaper.
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Radeon RX 6800 XT vs Radeon RX 6400: In-Depth Breakdown
Performance: Radeon RX 6800 XT vs Radeon RX 6400
The Radeon RX 6800 XT is dramatically faster, around 517% ahead of the Radeon RX 6400. That gap is enough to move it up a tier: the Radeon RX 6800 XT is comfortable at 1440p, while the Radeon RX 6400 is better matched to entry-level 1080p. The Radeon RX 6800 XT packs 4,608 stream processors versus 768 on the Radeon RX 6400. The Radeon RX 6800 XT also has more RT cores (72 vs 12), strengthening its ray-tracing and AI-upscaling performance.
Price & Value
Right now the Radeon RX 6400 starts at $1,528 BRL against $9,541 BRL for the Radeon RX 6800 XT. Despite being slower, the Radeon RX 6400 offers the better performance-per-dollar, so budget-focused buyers should weigh it carefully. The Radeon RX 6400 still sits about $1,369 BRL above its $159 BRL MSRP. The Radeon RX 6800 XT still sits about $8,892 BRL above its $649 BRL MSRP.
Power & Efficiency
The Radeon RX 6400 pulls less power (53W vs 300W), so it's the easier card to cool and the lighter load on your PSU. The faster Radeon RX 6800 XT draws more overall but extracts more performance from each watt — plan for a sturdier power supply if you pick it.
VRAM & Future-Proofing
With 16GB against 4GB, the Radeon RX 6800 XT has more headroom for 4K textures and memory-hungry creative/AI tasks where the Radeon RX 6400's 4GB can fall short. The Radeon RX 6800 XT's memory is also faster — 512 GB/s versus 128 GB/s (256-bit vs 64-bit bus) — which helps feed the GPU at 4K and with heavy textures.
Generation & Longevity
The Radeon RX 6400 is roughly 2 years newer than the Radeon RX 6800 XT, so it generally benefits from a more modern architecture and longer driver-support runway.
Which should you buy: Radeon RX 6400 or Radeon RX 6800 XT?
Choose the Radeon RX 6800 XT if you want the most performance and can absorb the higher price. If you're optimizing for value, the Radeon RX 6400 stretches your money further for only slightly lower performance.
Frequently Asked Questions
Is the Radeon RX 6800 XT better than the Radeon RX 6400?
Which is better for 4K gaming, the Radeon RX 6400 or the Radeon RX 6800 XT?
Is the Radeon RX 6800 XT worth the extra $8,012 BRL over the Radeon RX 6400?
Does the Radeon RX 6800 XT have enough VRAM advantage to matter?
Which is better for ray tracing, the Radeon RX 6800 XT or the Radeon RX 6400?
Technical Specifications Comparison
Architecture & Cores
| Specification | Radeon RX 6400 | Radeon RX 6800 XT |
|---|---|---|
| Architecture | RDNA 2 | RDNA 2 |
| Process Node | TSMC N6 | TSMC N7 |
| CUDA Cores (Stream Processors / Stream Processors) | 768 | 4,608✓ |
| Ray Tracing Cores | 12 | 72✓ |
Clock Speeds
| Specification | Radeon RX 6400 | Radeon RX 6800 XT |
|---|---|---|
| Base Clock | 1,923 MHz✓ | 1,825 MHz |
| Boost Clock | 2,321 MHz✓ | 2,250 MHz |
Memory
| Specification | Radeon RX 6400 | Radeon RX 6800 XT |
|---|---|---|
| VRAM Capacity | 4 GB | 16 GB✓ |
| Memory Type | GDDR6 | GDDR6 |
| Memory Bus | 64-bit | 256-bit✓ |
| Memory Speed | 16 Gbps | 16 Gbps |
| Bandwidth | 128 GB/s | 512 GB/s✓ |
Connectivity & Power
| Specification | Radeon RX 6400 | Radeon RX 6800 XT |
|---|---|---|
| Interface | PCIe 4.0 x4 | PCIe 4.0 x16 |
| TDP | 53 W✓ | 300 W |
| Power Connectors | None | 2x 8-pin |
| Released | Jan 2022 | Oct 2020 |