NVIDIA GeForce RTX 4070 Ti SUPER vs AMD Radeon RX 7900 XT
Transient-aware PSU requirements, ATX compliance, cable safety audit, and power efficiency comparison.
| Specification | NVIDIA GeForce RTX 4070 Ti SUPER | AMD Radeon RX 7900 XT |
|---|---|---|
| Performance Tier | High-End | High-End |
| Total Board Power (TBP) | 285W | 315W |
| Transient Peak (modeled) | 411W | 491W |
| Minimum Recommended PSU | 600W | 700W |
| PCIe Connector Required | 12v-2x6 | 8pin-x2 |
| Number of Connectors | 1 | 2 |
| ATX 3.1 Required | ✓ Yes | ✗ No |
| Daisy-Chain Safe | ✗ No | ✗ No |
| MSRP | $799 | $649 |
| Generation | Ada Lovelace | RDNA 3 |
PSU Requirement Breakdown
NVIDIA GeForce RTX 4070 Ti SUPER
⚠ NVIDIA GeForce RTX 4070 Ti SUPER requires an ATX 3.1 PSU with a native 12V-2x6 cable. DO NOT use adapter cables from older 8-pin connectors. If your PSU lacks a native 12V-2x6 port, you must upgrade your PSU.
AMD Radeon RX 7900 XT
⚠ AMD Radeon RX 7900 XT requires 2 separate 8-pin PCIe power cables. DO NOT daisy-chain — each cable must run directly from the PSU to the GPU.
Power Efficiency Verdict
NVIDIA GeForce RTX 4070 Ti SUPER requires less PSU headroom per dollar spent. It needs 600W recommended at $799, versus 700W at $649 for the AMD Radeon RX 7900 XT.
Note: NVIDIA GeForce RTX 4070 Ti SUPER requires an ATX 3.1 PSU with a native 12V-2x6 cable — factor in a possible PSU upgrade cost if you currently own an ATX 2.x unit.
Frequently Asked Questions
Which PSU do I need for NVIDIA GeForce RTX 4070 Ti SUPER?
NVIDIA GeForce RTX 4070 Ti SUPER has a 285W TBP but can spike to 411W during transient loads. We recommend a minimum 600W ATX 3.1 PSU with a native 12V-2x6 connector for safe operation with headroom.
Which PSU do I need for AMD Radeon RX 7900 XT?
AMD Radeon RX 7900 XT has a 315W TBP and transient peak up to 491W. We recommend a minimum 700W ATX 3.1 PSU for stable operation.
Does NVIDIA GeForce RTX 4070 Ti SUPER or AMD Radeon RX 7900 XT need ATX 3.1?
NVIDIA GeForce RTX 4070 Ti SUPER requires an ATX 3.1 PSU with a native 12V-2x6 connector. Do not use adapter cables. AMD Radeon RX 7900 XT uses 8pin-x2 and does not require ATX 3.1.