RTX 5070 Ti vs RTX 5080: Which Should You Buy?
Head-to-head on performance, VRAM, power and value for 2026.
Quick Summary · TL;DR
On our relative performance index the RTX 5080 leads the RTX 5070 Ti by about 13% — a moderate gap. Both carry 16GB of VRAM.
| RTX 5070 Ti | RTX 5080 | |
|---|---|---|
| Performance index | 76/100 | 86/100 |
| VRAM | 16GB | 16GB |
| Board power (TBP) | 300W | 360W |
| Maker PSU guidance | 750W | 850W |
| Our starting PSU class | 750W | 850W |
| Power connector | 16-pin 12V-2x6 | 16-pin 12V-2x6 |
| Generation | RTX 50 | RTX 50 |
Relative gaming index — an estimate of typical performance. Real-world gaps vary by game, resolution and settings.
Which should you buy?
Buy the RTX 5080 if you want the higher frame rate and can find it at a fair price. Choose the RTX 5070 Ti if it is clearly cheaper and its 16GB+ of VRAM and features cover your target resolution. Both are from a similar lineage, so price is the main deciding factor.
Power planning: RTX 5070 Ti PSU · RTX 5080 PSU.
RTX 5070 Ti vs RTX 5080 at each resolution
| Resolution | RTX 5070 Ti | RTX 5080 |
|---|---|---|
| 1080p | Excellent | Excellent |
| 1440p | Excellent | Excellent |
| 4K | Great (10 short of Excellent) | Excellent |
The 10-point gap (76 vs 86) changes the verdict at 4K: that is where the RTX 5080 earns its place. At 1080p and 1440p both get the same rating, so paying for the faster card buys headroom rather than a different experience there.
Power, PSU and efficiency
Reference board power is 300W for the RTX 5070 Ti and 360W for the RTX 5080, a 60W difference. Per 100W that works out to 25.3 index points for the RTX 5070 Ti and 23.9 for the RTX 5080, so the RTX 5070 Ti does more per watt. An existing 750W supply meets the maker guidance for the RTX 5070 Ti but not for the RTX 5080 (850W). Full sizing: RTX 5070 Ti PSU · RTX 5080 PSU.
Ratings use the same index lines as our GPU resolution pages; the index is an editorial tier summary, not a benchmark. PSU figures are the makers’ reference guidance reviewed 12 September 2026.
Sources & verification
Relative indices summarize broad gaming tiers and are not a substitute for game-by-game benchmark averages. Price and driver updates can change the buying recommendation. Last reviewed September 19, 2026.
Frequently asked questions
Is the RTX 5070 Ti better than the RTX 5080?
On our relative index the RTX 5080 is about 13% ahead of the RTX 5070 Ti. Both carry 16GB of VRAM. The smaller the gap, the more other factors like price, VRAM and features should decide it.
Which is better value, the RTX 5070 Ti or the RTX 5080?
Value depends on the price you can find each at. The slower card is usually the smart buy if it is meaningfully cheaper, unless you need the extra VRAM or features of the faster one.
Do the RTX 5070 Ti and RTX 5080 need different power supplies?
The RTX 5070 Ti's maker lists a 750W supply and the RTX 5080's lists 850W; our starting classes are 750W and 850W. If you might move to the RTX 5080 later, size for its 850W now. The RTX 5070 Ti and RTX 5080 can also take a PCIe Gen 5 (12V-2x6) cable; see the connector guide.
Make sure your CPU can keep up with either card using the Bottleneck Estimator, or compare more cards in the GPU comparison hub.