Radeon RX 6600 XT vs Radeon RX Vega 64
The Radeon RX 6600 XT is a big jump in performance — leading the Radeon RX Vega 64 by roughly 29% in our performance index. The Radeon RX Vega 64, however, delivers more performance per dollar — $101 USD cheaper.
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Radeon RX 6600 XT vs Radeon RX Vega 64: In-Depth Breakdown
Performance: Radeon RX 6600 XT vs Radeon RX Vega 64
The Radeon RX 6600 XT is significantly faster, around 29% ahead of the Radeon RX Vega 64. Both cards sit in the same broad class, well suited to 1080p.
Price & Value
On price, expect to pay $150 USD for the Radeon RX Vega 64 versus $250 USD for the Radeon RX 6600 XT. Despite being slower, the Radeon RX Vega 64 offers the better performance-per-dollar (~30% better value), so budget-focused buyers should weigh it carefully. The Radeon RX Vega 64 is trading below its $499 USD MSRP — a genuine deal. The Radeon RX 6600 XT is trading below its $379 USD MSRP — a genuine deal.
Power & Efficiency
The Radeon RX 6600 XT draws just 160W versus 295W for the Radeon RX Vega 64, and it also delivers more performance per watt — so it runs cooler and quieter and needs less PSU headroom. Its more modern RDNA 2 architecture on a TSMC N7 process is part of why it does more with each watt.
Memory & Bandwidth
The Radeon RX Vega 64's memory is faster — 484 GB/s versus 256 GB/s (2048-bit vs 128-bit bus) — which helps feed the GPU at 4K and with heavy textures.
Generation & Longevity
The Radeon RX 6600 XT is roughly 4 years newer than the Radeon RX Vega 64 (RDNA 2 vs GCN 5.0 (Vega)), so it generally benefits from a more modern architecture and longer driver-support runway.
Which should you buy: Radeon RX 6600 XT or Radeon RX Vega 64?
Choose the Radeon RX 6600 XT if you want the most performance and can absorb the higher price. If you're optimizing for value, the Radeon RX Vega 64 stretches your money further for only slightly lower performance.
Frequently Asked Questions
Is the Radeon RX 6600 XT better than the Radeon RX Vega 64?
Which is better for 4K gaming, the Radeon RX 6600 XT or the Radeon RX Vega 64?
Is the Radeon RX 6600 XT worth the extra $101 USD over the Radeon RX Vega 64?
Which should you buy: Radeon RX 6600 XT or Radeon RX Vega 64?
Technical Specifications Comparison
Architecture & Cores
| Specification | Radeon RX 6600 XT | Radeon RX Vega 64 |
|---|---|---|
| Architecture | RDNA 2 | GCN 5.0 (Vega) |
| Process Node | TSMC N7 | GloFo 14nm |
| CUDA Cores (Stream Processors / Stream Processors) | 2,048 | 4,096✓ |
| Ray Tracing Cores | 32 | — |
Clock Speeds
| Specification | Radeon RX 6600 XT | Radeon RX Vega 64 |
|---|---|---|
| Base Clock | 1,968 MHz✓ | 1,247 MHz |
| Boost Clock | 2,589 MHz✓ | 1,546 MHz |
Memory
| Specification | Radeon RX 6600 XT | Radeon RX Vega 64 |
|---|---|---|
| VRAM Capacity | 8 GB | 8 GB |
| Memory Type | GDDR6 | HBM2 |
| Memory Bus | 128-bit | 2048-bit✓ |
| Memory Speed | 16 Gbps✓ | 1.89 Gbps |
| Bandwidth | 256 GB/s | 483.8 GB/s✓ |
Connectivity & Power
| Specification | Radeon RX 6600 XT | Radeon RX Vega 64 |
|---|---|---|
| Interface | PCIe 4.0 x8 | PCIe 3.0 x16 |
| TDP | 160 W✓ | 295 W |
| Power Connectors | 1x 8-pin | 2x 8-pin |
| Released | Jul 2021 | Aug 2017 |