RTX 4090 vs RTX 5080
Used graphics cards: UK sold prices and specifications.
A used RTX 4090 sells for £922.68 more than a used RTX 5080.Medians of 162 UK sales and 216 UK sales in the last 90 days.
| Model | Target Price | Range of sales, 90 days | Sales | 3-month | New from |
|---|---|---|---|---|---|
| GeForce RTX 409024GB GDDR6X, 450W, Ada Lovelace£852£2,822 | £2,222.67 | £852£2,822 | |||
| GeForce RTX 508016GB GDDR7, 360W, Blackwell£852£2,822 | £1,299.99 | £852£2,822 |
The RTX 4090 has 24GB of video memory against 16GB on the RTX 5080. The RTX 4090 is rated at 450W board power against 360W on the RTX 5080. Per GB of video memory, a used RTX 4090 costs £92.61 and a used RTX 5080 £81.25. The RTX 5080 came out in 2025 and the RTX 4090 in 2022.
Specification
| Specification | RTX 4090 | RTX 5080 |
|---|---|---|
| Brand | Nvidia | Nvidia |
| Family | RTX 40 | RTX 50 |
| Released | 2022 | 2025 |
| Architecture | Ada Lovelace | Blackwell |
| Video memory | 24GB GDDR6X | 16GB GDDR7 |
| Board power | 450W | 360W |
Which to buy used
The RTX 4090 is generally the faster card and has 24GB against 16GB. The RTX 5080 is newer, draws less power, supports DLSS 4 multi frame generation and is more likely to have warranty left. Check the power connector carefully on any used RTX 4090.