NVIDIA GeForce RTX 4080 SUPER vs NVIDIA GeForce RTX 5080 SUPER
Transient-aware PSU requirements, ATX compliance, cable safety audit, and power efficiency comparison.
| Specification | NVIDIA GeForce RTX 4080 SUPER | NVIDIA GeForce RTX 5080 SUPER |
|---|---|---|
| Performance Tier | Ultra | Ultra |
| Total Board Power (TBP) | 320W | 415W |
| Transient Peak (modeled) | 461W | 591W |
| Minimum Recommended PSU | 650W | 800W |
| 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 | $1099 |
| Generation | Ada Lovelace | Blackwell |
PSU Requirement Breakdown
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.
NVIDIA GeForce RTX 5080 SUPER
⚠ NVIDIA GeForce RTX 5080 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 $1099 for the NVIDIA GeForce RTX 5080 SUPER.
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 4080 SUPER?
NVIDIA GeForce RTX 4080 SUPER has a 320W TBP but can spike to 461W during transient loads. We recommend a minimum 650W ATX 3.1 PSU with a native 12V-2x6 connector for safe operation with headroom.
Which PSU do I need for NVIDIA GeForce RTX 5080 SUPER?
NVIDIA GeForce RTX 5080 SUPER has a 415W TBP and transient peak up to 591W. We recommend a minimum 800W ATX 3.1 PSU with a native 12V-2x6 connector for stable operation.
Does NVIDIA GeForce RTX 4080 SUPER or NVIDIA GeForce RTX 5080 SUPER need ATX 3.1?
NVIDIA GeForce RTX 4080 SUPER requires an ATX 3.1 PSU with a native 12V-2x6 connector. Do not use adapter cables. NVIDIA GeForce RTX 5080 SUPER also requires ATX 3.1 with a 12V-2x6 connector.