GPU Comparison
Select up to 2 GPUs to analyze their pricing, performance, and specifications side-by-side.
Market Value Leader
Market comparison is currently pending while we verify the latest benchmarks for Radeon RX 6400 and Radeon RX 6600.
On raw speed the Radeon RX 6600 comes out dramatically faster — about 150% ahead of the Radeon RX 6400.
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Comparable or lower specs
Radeon RX 6600 vs Radeon RX 6400: In-Depth Breakdown
Performance: Radeon RX 6600 vs Radeon RX 6400
The Radeon RX 6600 is dramatically faster, around 150% ahead of the Radeon RX 6400. That gap is enough to move it up a tier: the Radeon RX 6600 is comfortable at 1080p, while the Radeon RX 6400 is better matched to entry-level 1080p. The Radeon RX 6600 packs 1,792 stream processors versus 768 on the Radeon RX 6400. The Radeon RX 6600 also has more RT cores (28 vs 12), strengthening its ray-tracing and AI-upscaling performance.
Power & Efficiency
On power, the Radeon RX 6400 is the gentler choice at 53W versus 132W. The Radeon RX 6600 is more efficient per watt because it's faster, but its higher 132W draw means more heat and a bigger PSU.
VRAM & Future-Proofing
The Radeon RX 6600 carries 8GB versus 4GB on the Radeon RX 6400. The extra 4GB helps at 4K, with high-resolution texture packs, and for content-creation or local-AI workloads that exhaust smaller buffers. The Radeon RX 6600's memory is also faster — 224 GB/s versus 128 GB/s (128-bit vs 64-bit bus) — which helps feed the GPU at 4K and with heavy textures.
Which should you buy: Radeon RX 6400 or Radeon RX 6600?
The Radeon RX 6600 is the faster card by about 150%. With live pricing limited for this pair, base your decision on the spec differences above — particularly VRAM and power draw — and check current stock before buying.
Frequently Asked Questions
Is the Radeon RX 6600 better than the Radeon RX 6400?
Which is better for 4K gaming, the Radeon RX 6400 or the Radeon RX 6600?
Does the Radeon RX 6600 have enough VRAM advantage to matter?
Which is better for ray tracing, the Radeon RX 6600 or the Radeon RX 6400?
Technical Specifications Comparison
Architecture & Cores
| Specification | Radeon RX 6400 | Radeon RX 6600 |
|---|---|---|
| Architecture | RDNA 2 | RDNA 2 |
| Process Node | TSMC N6 | TSMC N7 |
| CUDA Cores (Stream Processors / Stream Processors) | 768 | 1,792✓ |
| Ray Tracing Cores | 12 | 28✓ |
Clock Speeds
| Specification | Radeon RX 6400 | Radeon RX 6600 |
|---|---|---|
| Base Clock | 1,923 MHz✓ | 1,626 MHz |
| Boost Clock | 2,321 MHz | 2,491 MHz✓ |
Memory
| Specification | Radeon RX 6400 | Radeon RX 6600 |
|---|---|---|
| VRAM Capacity | 4 GB | 8 GB✓ |
| Memory Type | GDDR6 | GDDR6 |
| Memory Bus | 64-bit | 128-bit✓ |
| Memory Speed | 16 Gbps✓ | 14 Gbps |
| Bandwidth | 128 GB/s | 224 GB/s✓ |
Connectivity & Power
| Specification | Radeon RX 6400 | Radeon RX 6600 |
|---|---|---|
| Interface | PCIe 4.0 x4 | PCIe 4.0 x8 |
| TDP | 53 W✓ | 132 W |
| Power Connectors | None | 1x 8-pin |
| Released | Jan 2022 | Oct 2021 |
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