GPU Comparison
Select up to 2 GPUs to analyze their pricing, performance, and specifications side-by-side.
Market Value Leader
Radeon RX 7900 XTX is the clear winner, offering 3788.5% better value than Radeon RX 6600.
The Radeon RX 7900 XTX is dramatically faster than the Radeon RX 6600, leading by roughly 273% in our performance index. It is also the stronger value pick here, so it's the easy recommendation if your budget allows.
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Comparable or lower specs
Radeon RX 7900 XTX vs Radeon RX 6600: In-Depth Breakdown
Performance: Radeon RX 7900 XTX vs Radeon RX 6600
The Radeon RX 7900 XTX is dramatically faster, around 273% ahead of the Radeon RX 6600. 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 is better matched to 1080p. The Radeon RX 7900 XTX packs 6,144 stream processors versus 1,792 on the Radeon RX 6600.
Price & Value
Right now the Radeon RX 7900 XTX starts at $180 BRL against $1,870 BRL for the Radeon RX 6600. Because it's both faster and competitively priced, the Radeon RX 7900 XTX wins on performance-per-dollar by about 3788%. The Radeon RX 7900 XTX is trading below its $999 BRL MSRP — a genuine deal. The Radeon RX 6600 still sits about $1,540 BRL above its $330 BRL MSRP.
Power & Efficiency
The Radeon RX 6600 pulls less power (132W vs 355W), so it's the easier card to cool and the lighter load on your PSU. The faster Radeon RX 7900 XTX draws more overall but extracts more performance from each watt — plan for a sturdier power supply if you pick it. Its more modern RDNA 3 architecture on a TSMC N5 process is part of why it does more with each watt.
VRAM & Future-Proofing
With 24GB against 8GB, the Radeon RX 7900 XTX has more headroom for 4K textures and memory-hungry creative/AI tasks where the Radeon RX 6600's 8GB can fall short. The Radeon RX 7900 XTX's memory is also faster — 960 GB/s versus 224 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 or Radeon RX 7900 XTX?
The Radeon RX 7900 XTX is the all-round winner here — it's faster and the better value, so buy it if it fits your budget. Only consider the Radeon RX 6600 if you find it at a steep discount.
Frequently Asked Questions
Is the Radeon RX 7900 XTX better than the Radeon RX 6600?
Which is better for 4K gaming, the Radeon RX 6600 or the Radeon RX 7900 XTX?
Is the Radeon RX 6600 worth the extra $1,690 BRL over 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 | Radeon RX 7900 XTX |
|---|---|---|
| Architecture | RDNA 2 | RDNA 3 |
| Process Node | TSMC N7 | TSMC N5 |
| CUDA Cores (Stream Processors / Stream Processors) | 1,792 | 6,144✓ |
| Ray Tracing Cores | 28 | 96✓ |
| Tensor / AI Cores | — | 192 |
Clock Speeds
| Specification | Radeon RX 6600 | Radeon RX 7900 XTX |
|---|---|---|
| Base Clock | 1,626 MHz | 1,900 MHz✓ |
| Boost Clock | 2,491 MHz | 2,500 MHz✓ |
Memory
| Specification | Radeon RX 6600 | Radeon RX 7900 XTX |
|---|---|---|
| VRAM Capacity | 8 GB | 24 GB✓ |
| Memory Type | GDDR6 | GDDR6 |
| Memory Bus | 128-bit | 384-bit✓ |
| Memory Speed | 14 Gbps | 20 Gbps✓ |
| Bandwidth | 224 GB/s | 960 GB/s✓ |
Connectivity & Power
| Specification | Radeon RX 6600 | Radeon RX 7900 XTX |
|---|---|---|
| Interface | PCIe 4.0 x8 | PCIe 4.0 x16 |
| TDP | 132 W✓ | 355 W |
| Power Connectors | 1x 8-pin | 2x 8-pin |
| Released | Oct 2021 | Nov 2022 |
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