GPU Comparison
Select up to 2 GPUs to analyze their pricing, performance, and specifications side-by-side.
Market Value Leader
Only verified data for Radeon RX 6600 XT is available. Benchmarks for other models are currently being processed.
On raw speed the Radeon RX 7900 XTX comes out dramatically faster — about 211% ahead of the Radeon RX 6600 XT.
Maximum Capacity Reached. Remove a model to add another. (2/2)
Radeon RX 7900 XTX vs Radeon RX 6600 XT: In-Depth Breakdown
Performance: Radeon RX 7900 XTX vs Radeon RX 6600 XT
The Radeon RX 7900 XTX is dramatically faster, around 211% ahead of the Radeon RX 6600 XT. That gap is enough to move it up a tier: the Radeon RX 7900 XTX is comfortable at 4K with upscaling and native 1440p, while the Radeon RX 6600 XT is better matched to 1080p. The Radeon RX 7900 XTX packs 6,144 stream processors versus 2,048 on the Radeon RX 6600 XT.
Power & Efficiency
On power, the Radeon RX 6600 XT is the gentler choice at 160W versus 355W. The Radeon RX 7900 XTX is more efficient per watt because it's faster, but its higher 355W draw means more heat and a bigger PSU. Its more modern RDNA 3 architecture on a TSMC N5 process is part of why it does more with each watt.
VRAM & Future-Proofing
The Radeon RX 7900 XTX carries 24GB versus 8GB on the Radeon RX 6600 XT. The extra 16GB helps at 4K, with high-resolution texture packs, and for content-creation or local-AI workloads that exhaust smaller buffers. The Radeon RX 7900 XTX's memory is also faster — 960 GB/s versus 256 GB/s (384-bit vs 128-bit bus) — which helps feed the GPU at 4K and with heavy textures.
Which should you buy: Radeon RX 6600 XT or Radeon RX 7900 XTX?
The Radeon RX 7900 XTX is the faster card by about 211%. 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 7900 XTX better than the Radeon RX 6600 XT?
Which is better for 4K gaming, the Radeon RX 6600 XT or the Radeon RX 7900 XTX?
Does the Radeon RX 7900 XTX have enough VRAM advantage to matter?
Technical Specifications Comparison
Architecture & Cores
| Specification | Radeon RX 6600 XT | Radeon RX 7900 XTX |
|---|---|---|
| Architecture | RDNA 2 | RDNA 3 |
| Process Node | TSMC N7 | TSMC N5 |
| CUDA Cores (Stream Processors / Stream Processors) | 2,048 | 6,144✓ |
| Ray Tracing Cores | 32 | 96✓ |
| Tensor / AI Cores | — | 192 |
Clock Speeds
| Specification | Radeon RX 6600 XT | Radeon RX 7900 XTX |
|---|---|---|
| Base Clock | 1,968 MHz✓ | 1,900 MHz |
| Boost Clock | 2,589 MHz✓ | 2,500 MHz |
Memory
| Specification | Radeon RX 6600 XT | Radeon RX 7900 XTX |
|---|---|---|
| VRAM Capacity | 8 GB | 24 GB✓ |
| Memory Type | GDDR6 | GDDR6 |
| Memory Bus | 128-bit | 384-bit✓ |
| Memory Speed | 16 Gbps | 20 Gbps✓ |
| Bandwidth | 256 GB/s | 960 GB/s✓ |
Connectivity & Power
| Specification | Radeon RX 6600 XT | Radeon RX 7900 XTX |
|---|---|---|
| Interface | PCIe 4.0 x8 | PCIe 4.0 x16 |
| TDP | 160 W✓ | 355 W |
| Power Connectors | 1x 8-pin | 2x 8-pin |
| Released | Jul 2021 | Nov 2022 |
