AMD Radeon RX 7800 XT vs Intel Arc B570
Transient-aware PSU requirements, ATX compliance, cable safety audit, and power efficiency comparison.
| Specification | AMD Radeon RX 7800 XT | Intel Arc B570 |
|---|---|---|
| Performance Tier | High-End | Mid-Range |
| Total Board Power (TBP) | 263W | 150W |
| Transient Peak (modeled) | 411W | 254W |
| Minimum Recommended PSU | 600W | 450W |
| PCIe Connector Required | 8pin-x2 | 8pin-x1 |
| Number of Connectors | 2 | 1 |
| ATX 3.1 Required | ✗ No | ✗ No |
| Daisy-Chain Safe | ✗ No | ✓ Yes |
| MSRP | $449 | $219 |
| Generation | RDNA 3 | Battlemage |
PSU Requirement Breakdown
AMD Radeon RX 7800 XT
⚠ AMD Radeon RX 7800 XT requires 2 separate 8-pin PCIe power cables. DO NOT daisy-chain — each cable must run directly from the PSU to the GPU.
Intel Arc B570
Power Efficiency Verdict
AMD Radeon RX 7800 XT requires less PSU headroom per dollar spent. It needs 600W recommended at $449, versus 450W at $219 for the Intel Arc B570.
Frequently Asked Questions
Which PSU do I need for AMD Radeon RX 7800 XT?
AMD Radeon RX 7800 XT has a 263W TBP but can spike to 411W during transient loads. We recommend a minimum 600W ATX 3.1 PSU for safe operation with headroom.
Which PSU do I need for Intel Arc B570?
Intel Arc B570 has a 150W TBP and transient peak up to 254W. We recommend a minimum 450W ATX 3.1 PSU for stable operation.
Does AMD Radeon RX 7800 XT or Intel Arc B570 need ATX 3.1?
AMD Radeon RX 7800 XT uses a standard 8pin-x2 connector and does not strictly require ATX 3.1, though an ATX 3.x PSU is still recommended for transient headroom. Intel Arc B570 uses 8pin-x1 and does not require ATX 3.1.