NVIDIA GeForce RTX 5080 vs NVIDIA GeForce RTX 4080 SUPER
Transient-aware PSU requirements, ATX compliance, cable safety audit, and power efficiency comparison.
| Specification | NVIDIA GeForce RTX 5080 | NVIDIA GeForce RTX 4080 SUPER |
|---|---|---|
| Performance Tier | Ultra | Ultra |
| Total Board Power (TBP) | 360W | 320W |
| Transient Peak (modeled) | 591W | 461W |
| Minimum Recommended PSU | 800W | 650W |
| PCIe Connector Required | 12v-2x6 | 12v-2x6 |
| Number of Connectors | 1 | 1 |
| ATX 3.1 Required | ✓ Yes | ✓ Yes |
| Daisy-Chain Safe | ✗ No | ✗ No |
| MSRP | $999 | $999 |
| Generation | Blackwell | Ada Lovelace |
PSU Requirement Breakdown
NVIDIA GeForce RTX 5080
⚠ NVIDIA GeForce RTX 5080 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.
NVIDIA GeForce RTX 4080 SUPER
⚠ NVIDIA GeForce RTX 4080 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.
Power Efficiency Verdict
NVIDIA GeForce RTX 4080 SUPER requires less PSU headroom per dollar spent. It needs 650W recommended at $999, versus 800W at $999 for the NVIDIA GeForce RTX 5080.
Both GPUs require ATX 3.1 PSUs with native 12V-2x6 cables. Do not use adapter cables from older 8-pin connectors.
Frequently Asked Questions
Which PSU do I need for NVIDIA GeForce RTX 5080?
NVIDIA GeForce RTX 5080 has a 360W TBP but can spike to 591W during transient loads. We recommend a minimum 800W ATX 3.1 PSU with a native 12V-2x6 connector for safe operation with headroom.
Which PSU do I need for NVIDIA GeForce RTX 4080 SUPER?
NVIDIA GeForce RTX 4080 SUPER has a 320W TBP and transient peak up to 461W. We recommend a minimum 650W ATX 3.1 PSU with a native 12V-2x6 connector for stable operation.
Does NVIDIA GeForce RTX 5080 or NVIDIA GeForce RTX 4080 SUPER need ATX 3.1?
NVIDIA GeForce RTX 5080 requires an ATX 3.1 PSU with a native 12V-2x6 connector. Do not use adapter cables. NVIDIA GeForce RTX 4080 SUPER also requires ATX 3.1 with a 12V-2x6 connector.