4K Gaming PC UK — Custom-Built for Ultra-High Resolution Gaming

4K gaming requires serious GPU power — it's four times the pixel count of 1080p. In 2026, the RTX 5080 and RTX 5090 are the GPUs capable of delivering 4K at high refresh rates with maximum settings. Combine them with DLSS 4 Frame Generation and you have a genuinely future-proof 4K gaming rig.

What GPU Do You Need for 4K Gaming?

  • RTX 5080 (from £1,934): The 4K gaming GPU of choice for most enthusiasts. Delivers 4K at 60–120fps in demanding titles, significantly higher with DLSS 4 Frame Generation enabled. 16GB GDDR7 VRAM handles 4K texture packs and future titles comfortably.
  • RTX 5090 (from £3,957): The absolute fastest gaming GPU available. 4K at 120+ fps in the most demanding titles with settings maxed out. If you're investing in a 4K 144Hz monitor, the RTX 5090 makes full use of it.

DLSS 4 — The Game Changer for 4K Gaming

NVIDIA's DLSS 4 with Frame Generation uses AI to generate additional frames between rendered frames. In practice, this can multiply frame rates by 2–4x in supported games. At 4K, this means:

  • RTX 5080 rendering 40fps natively → DLSS 4 can push this to 80–120fps in the final output
  • RTX 5090 rendering 60fps natively → DLSS 4 can reach 120–240fps

The list of DLSS 4 supported games grows monthly. Most major titles support it in 2026.

CPU for 4K Gaming

At 4K, the GPU is the bottleneck — not the CPU. However, a fast CPU ensures you're not CPU-limited in CPU-heavy open-world games. Our recommendation:

  • Ryzen 7 9800X3D: Best gaming CPU for 4K — the 3D V-Cache eliminates CPU bottlenecks in even the most demanding titles
  • Ryzen 9 9950X: Best for gaming + simultaneous streaming/recording at 4K
  • Core Ultra 9 285K: Intel's top option — excellent for 4K gaming and productivity workloads

Our 4K Gaming PC Builds

4K High Performance — From £1,934

RTX 5080 16GB paired with Ryzen 7 9800X3D or Core Ultra 9 285K. This is the recommended 4K gaming build for 2026 — capable of maxed-out settings at 60–100fps natively, and significantly higher with DLSS 4. Handles every current title at 4K ultra.

Browse RTX 5080 builds from £1,934 →

4K Ultimate — From £3,957

RTX 5090 32GB — the most powerful consumer GPU ever built. Pairs with Ryzen 9 9950X or Core Ultra 9 285K for a system that will remain at the top for years. 32GB GDDR7 VRAM future-proofs you against any coming titles or resolutions.

Browse RTX 5090 builds from £3,957 →

4K Monitor Recommendations

To get the full benefit of a 4K gaming PC, you need a 4K monitor. Look for:

  • 4K 144Hz (ideal): ASUS ROG Swift, LG UltraGear, Samsung Odyssey Neo
  • 4K 60Hz (budget 4K): Any 4K IPS or VA panel — still a major upgrade over 1080p
  • HDR: Mini-LED or OLED panels for true HDR — the RTX 5080/5090 support HDMI 2.1 for full 4K 144Hz HDR

Build Your 4K Gaming PC

From £1,934  ·  3-Year Warranty  ·  Free Next-Day UK Delivery  ·  Always £100 Below eBay

Configure Your 4K Build →

Building for work as well as play? Try the dedicated Intel Workstation Builder or AMD Workstation Builder.

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