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RTX 3080 vs RX 7700 XT — Used vs New
| Spec | RTX 3080 10GB Used | RX 7700 XT New |
|---|---|---|
| VRAM | 10GB GDDR6X | 12GB GDDR6 |
| TDP | 320W | 263W |
| Architecture | Ampere 2020 | RDNA 3 2023 |
| Upscaling | DLSS 2 | FSR 3 |
| Warranty | None used | 2 to 3 years |
| Fair Price | $180 to $250 | Around $290 |
Performance: RTX 3080 Leads in Rasterization
At 1440p the RTX 3080 10GB leads the RX 7700 XT by 5 to 10 percent in most titles. However the RX 7700 XT has 12GB VRAM versus 10GB — a gap that is starting to matter at 1440p maximum texture settings in 2026.
What to Do After Buying Any Used GPU
- Run FurMark for 20 minutes — watch for temperatures above 90 degrees
- Test for artifacting in games during your return window
- Apply fresh Thermal Grizzly Kryonaut immediately — recovers 8 to 15 degrees on aged cards
- Clean with an electric air duster before re-pasting
The Price Decision
- Used RTX 3080 within $50 of new RX 7700 XT: buy the RX 7700 XT for the warranty
- Used RTX 3080 is $80 or more cheaper: buy the RTX 3080 and re-paste immediately
Shop on Amazon: RTX 3080 — Check Current Used Prices
Shop on Amazon: RX 7700 XT — Check New Price
Shop on Amazon: Thermal Grizzly Kryonaut — Re-Paste Immediately After Purchase
Shop on Amazon: 99% Isopropyl Alcohol — Clean Old Paste
Shop on Amazon: Electric Air Duster — Clean Before Re-Pasting
Shop on Amazon: Fractal Design Focus 2 — Good Airflow Home for Either GPU