RTX 4090 vs RTX 5090
Used graphics cards: UK sold prices and specifications.
A used RTX 5090 sells for £2,093.38 more than a used RTX 4090.Medians of 162 UK sales and 166 UK sales in the last 90 days.
| Model | Target Price | Range of sales, 90 days | Sales | 3-month |
|---|---|---|---|---|
| GeForce RTX 409024GB GDDR6X, 450W, Ada Lovelace£1,452£5,448 | £2,222.67 | £1,452£5,448 | ||
| GeForce RTX 509032GB GDDR7, 575W, Blackwell£1,452£5,448 | £4,316.05 | £1,452£5,448 |
The RTX 5090 has 32GB of video memory against 24GB on the RTX 4090. The RTX 5090 is rated at 575W board power against 450W on the RTX 4090. Per GB of video memory, a used RTX 4090 costs £92.61 and a used RTX 5090 £134.88. The RTX 5090 came out in 2025 and the RTX 4090 in 2022.
Specification
| Specification | RTX 4090 | RTX 5090 |
|---|---|---|
| Brand | Nvidia | Nvidia |
| Family | RTX 40 | RTX 50 |
| Released | 2022 | 2025 |
| Architecture | Ada Lovelace | Blackwell |
| Video memory | 24GB GDDR6X | 32GB GDDR7 |
| Board power | 450W | 575W |
Which to buy used
The RTX 5090 is clearly faster and has 32GB against 24GB, but it draws 575W against 450W and sells for far more. Only workloads that use the extra memory, or 4K with everything turned up, tend to justify the gap.