Gaming PC specs explained: what matters at 1080p, 1440p and 4K
Which parts make the biggest difference, how much graphics card you need for your screen, and the warning signs in a spec list.
A spec list can look like alphabet soup. The good news is that for gaming, a few parts matter far more than the rest. Start with your screen and the games you play, then work backwards.
1. Graphics card (GPU): the most important part
The graphics card does most of the work in games. Match it to your monitor's resolution and refresh rate. A rough guide as of late 2026:
| Your screen | Look for something like |
|---|---|
| 1080p, 60–144Hz | RTX 5060 or RX 9060 XT class, or an older RTX 3070 / RX 6700 XT |
| 1440p, high refresh rate | RTX 5070 or RX 9070 class, or an older RTX 4070 Super / RTX 3080 |
| 4K | RTX 5080 or RX 9070 XT class and above |
Models change quickly, so compare benchmarks for the games you play. Video memory (VRAM) matters more each year: 8GB is now the minimum, and 12–16GB will last longer at 1440p and above.
2. Processor (CPU)
For gaming, six to eight modern cores are plenty. AMD's "X3D" chips are especially strong in games. The motherboard platform affects upgrades: AMD's AM5 and Intel's newer sockets have more life left than AM4 or older Intel boards.
Intel 13th and 14th generation Core i7 and i9: some of these chips became unstable over time. Ask whether the BIOS has been updated with Intel's 2024 fix, and stress test it carefully.
3. Memory (RAM)
16GB is the minimum for gaming today, and 32GB is comfortable. Two sticks ("dual channel") perform noticeably better than one. Whether a PC uses DDR4 or DDR5 depends on the motherboard, so you can't mix them.
4. Storage
Look for an NVMe SSD of at least 1TB. Modern games are large, and loading from an old hard drive is painfully slow. A hard drive is fine as extra storage, but Windows should be on an SSD.
5. Power supply (PSU): the hidden one
A good power supply protects everything else. Look for a well-known brand with an 80 Plus rating, and enough wattage for the graphics card (check the card maker's recommendation). If a seller can't tell you the make and model, or it's an unbranded unit in an expensive PC, be wary.
6. Cooling and case
Good airflow keeps parts cooler and quieter, and helps them last. A case with a mesh front and several fans usually runs cooler than one with a solid glass front.
Laptops are different
The same graphics card name can perform very differently in two laptops, depending on how much power the laptop gives it. Search for reviews of the exact laptop model, not just the GPU. Check the screen's resolution and refresh rate too, because you can't upgrade it later.
Don't forget Windows
A genuine, activated copy of Windows is worth having. Check Settings → System → Activation when you view the PC. For more checks, read testing a second-hand PC before you buy, then browse computers near you.