NVIDIA GeForce RTX 5070 Ti vs AMD Radeon RX 7900 GRE
Transient-aware PSU requirements, ATX compliance, cable safety audit, and power efficiency comparison.
| Specification | NVIDIA GeForce RTX 5070 Ti | AMD Radeon RX 7900 GRE |
|---|---|---|
| Performance Tier | High-End | High-End |
| Total Board Power (TBP) | 300W | 260W |
| Transient Peak (modeled) | 501W | 401W |
| Minimum Recommended PSU | 700W | 550W |
| PCIe Connector Required | 12v-2x6 | 8pin-x2 |
| Number of Connectors | 1 | 2 |
| ATX 3.1 Required | ✓ Yes | ✗ No |
| Daisy-Chain Safe | ✗ No | ✗ No |
| MSRP | $749 | $549 |
| Generation | Blackwell | RDNA 3 |
PSU Requirement Breakdown
NVIDIA GeForce RTX 5070 Ti
⚠ NVIDIA GeForce RTX 5070 Ti 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 GRE
⚠ AMD Radeon RX 7900 GRE 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 5070 Ti requires less PSU headroom per dollar spent. It needs 700W recommended at $749, versus 550W at $549 for the AMD Radeon RX 7900 GRE.
Note: NVIDIA GeForce RTX 5070 Ti 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 5070 Ti?
NVIDIA GeForce RTX 5070 Ti has a 300W TBP but can spike to 501W during transient loads. We recommend a minimum 700W 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 GRE?
AMD Radeon RX 7900 GRE has a 260W TBP and transient peak up to 401W. We recommend a minimum 550W ATX 3.1 PSU for stable operation.
Does NVIDIA GeForce RTX 5070 Ti or AMD Radeon RX 7900 GRE need ATX 3.1?
NVIDIA GeForce RTX 5070 Ti requires an ATX 3.1 PSU with a native 12V-2x6 connector. Do not use adapter cables. AMD Radeon RX 7900 GRE uses 8pin-x2 and does not require ATX 3.1.