Arc B580 vs Radeon RX 6700 XT
Performance-wise the Radeon RX 6700 XT is out front, noticeably faster, roughly 9% up on the Arc B580. Value tips toward the Arc B580, though: $106 GBP cheaper for what you get.
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Radeon RX 6700 XT vs Arc B580: In-Depth Breakdown
Performance: Radeon RX 6700 XT vs Arc B580
The Radeon RX 6700 XT is noticeably faster, around 9% ahead of the Arc B580. Both cards sit in the same broad class, well suited to 1080p.
Price & Value
Right now the Arc B580 starts at $260 GBP against $366 GBP for the Radeon RX 6700 XT. Despite being slower, the Arc B580 offers the better performance-per-dollar (~29% better value), so budget-focused buyers should weigh it carefully. The Radeon RX 6700 XT is trading below its $479 GBP MSRP — a genuine deal.
Power & Efficiency
The Arc B580 sips power at 190W next to the Radeon RX 6700 XT's 230W, and still leads on performance-per-watt — quieter, cooler, and gentler on your PSU. Its more modern Battlemage architecture on a TSMC N5 process is part of why it does more with each watt.
Generation & Longevity
The Arc B580 is roughly 3 years newer than the Radeon RX 6700 XT (Battlemage vs RDNA 2), so it generally benefits from a more modern architecture and longer driver-support runway.
Features & Ecosystem
Beyond raw numbers, the Arc B580 brings Intel XeSS upscaling and AV1 encoding, while the Radeon RX 6700 XT offers AMD FSR upscaling and strong rasterization value. If you lean on upscaling or ray tracing, that ecosystem difference can matter as much as the frame-rate gap.
Which should you buy: Arc B580 or Radeon RX 6700 XT?
Choose the Radeon RX 6700 XT if you want the most performance and can absorb the higher price. If you're optimizing for value, the Arc B580 stretches your money further for only slightly lower performance.
Frequently Asked Questions
Is the Radeon RX 6700 XT better than the Arc B580?
Which is better for 4K gaming, the Arc B580 or the Radeon RX 6700 XT?
Is the Radeon RX 6700 XT worth the extra $106 GBP over the Arc B580?
Which should you buy: Arc B580 or Radeon RX 6700 XT?
Technical Specifications Comparison
Architecture & Cores
| Specification | Arc B580 | Radeon RX 6700 XT |
|---|---|---|
| Architecture | Battlemage | RDNA 2 |
| Process Node | TSMC N5 | TSMC N7 |
| CUDA Cores (Shading Units / Stream Processors) | 2,560 | 2,560 |
| Ray Tracing Cores | 20 | 40✓ |
| Tensor / AI Cores | 160 | — |
Clock Speeds
| Specification | Arc B580 | Radeon RX 6700 XT |
|---|---|---|
| Base Clock | 2,670 MHz✓ | 2,321 MHz |
| Boost Clock | 2,850 MHz✓ | 2,581 MHz |
Memory
| Specification | Arc B580 | Radeon RX 6700 XT |
|---|---|---|
| VRAM Capacity | 12 GB | 12 GB |
| Memory Type | GDDR6 | GDDR6 |
| Memory Bus | 192-bit | 192-bit |
| Memory Speed | 19 Gbps✓ | 16 Gbps |
| Bandwidth | 456 GB/s✓ | 384 GB/s |
Connectivity & Power
| Specification | Arc B580 | Radeon RX 6700 XT |
|---|---|---|
| Interface | PCIe 4.0 x8 | PCIe 4.0 x16 |
| TDP | 190 W✓ | 230 W |
| Power Connectors | 1x 8-pin | 1x 6-pin + 1x 8-pin |
| Released | Dec 2024 | Mar 2021 |
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