Intel Core i5-11600K + AMD Radeon RX 7800 XT
Will they bottleneck? Here’s the verdict at 1440p gaming — and how it shifts with resolution.
Intel Core i5-11600K
6c / 12t · 4.9 GHz · 125W
AMD Radeon RX 7800 XT
16 GB VRAM · 37.3 TFLOPS · 263W
3% CPU-bound. The Intel Core i5-11600K is holding back the AMD Radeon RX 7800 XT.
CPU limits 1440p performance — single-thread headroom is the constraint at this resolution.
GRADE
S
PSU MIN
700W
CONFIDENCE
86%
THE SHORT ANSWER
The Intel Core i5-11600K + AMD Radeon RX 7800 XT pairing is rated Grade S for 1440p gaming with a recommended 700W PSU. Resolution-by-resolution: 1080p: 6% CPU-bound, 1440p: 3% CPU-bound, 4K: 0% CPU-bound. CPU and GPU bottleneck verdicts depend on resolution — a pairing that is CPU-bound at 1080p is often perfectly balanced at 4K because the GPU does more work per frame as pixel count increases.
Engine accuracy: 21.6% MAE on measured FPS · methodology
Plain-English breakdown.
What this pairing actually means when you sit down to play.
The Intel Core i5-11600K + AMD Radeon RX 7800 XT pair is 3% CPU-limited at 1440p. Same pattern at 1080p and 4K. As a build, it grades elite-tier (S).
Expect around 327 FPS in League of Legends and ~89 in the more demanding Starfield — both at 1440p with high or ultra presets. Resolution matters more than most calculators show — the same parts give different verdicts at 1080p, 1440p, and 4K because GPU work scales with pixel count while CPU work is roughly fixed per frame.
If you upgrade the cpu, the Intel Core i9-11900K is an option to consider — check the compatibility notes and historical pricing below before buying. Plan on at least a 700W PSU — that includes headroom for transient spikes on the AMD Radeon RX 7800 XT.
The same pair gives a different answer at 1080p, 1440p, and 4K.
Higher resolutions push work onto the GPU — watch the balance shift.
1080P
6% CPU-bound
1440P
3% CPU-bound
4K
0% CPU-bound
These CPUs would unlock more of the AMD Radeon RX 7800 XT.
Check compatibility before buying. Prices are for the part alone; launch MSRP is historical, not a live offer.
- i9-11900K76Amazon
Same socket (LGA1200)
Check your exact motherboard's CPU support list and required BIOS. Cooler and power support must also match.
Launch MSRP: $539 · current price may differ
- Ultra 5 245K96Amazon
Platform change (LGA1200 → LGA1851)
Requires a motherboard with socket LGA1851. DDR5 memory is required; budget for it if your current RAM is DDR4. Budget separately for the motherboard, memory and any cooler changes.
Launch MSRP: $319 · current price may differ
CPU price only. Total platform cost is not yet priced.
- Ryzen 5 9600X91Amazon
Platform change (LGA1200 → AM5)
Requires a motherboard with socket AM5. DDR5 memory is required; budget for it if your current RAM is DDR4. Budget separately for the motherboard, memory and any cooler changes.
Launch MSRP: $279 · current price may differ
CPU price only. Total platform cost is not yet priced.
- Ultra 7 265K99Amazon
Platform change (LGA1200 → LGA1851)
Requires a motherboard with socket LGA1851. DDR5 memory is required; budget for it if your current RAM is DDR4. Budget separately for the motherboard, memory and any cooler changes.
Launch MSRP: $394 · current price may differ
CPU price only. Total platform cost is not yet priced.
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Expected frame rates in 10 popular games.
At 1440p, high settings — measured where we have benchmarks, modeled otherwise.
- League of Legends327 fps · Estimated · low
- Apex Legends285 fps · Estimated · low
- Forza Horizon 5144 fps · Estimated · low
- The Witcher 3: Wild Hunt147 fps · Estimated · low
- Call of Duty: Warzone116 fps · Estimated · low
- Alan Wake 293 fps · Estimated · low
- Hogwarts Legacy90 fps · Estimated · low
- Starfield89 fps · Estimated · low
Compare similar builds.
Swap one part and see how the verdict moves.
Common questions.
Straight answers for the Intel Core i5-11600K + AMD Radeon RX 7800 XT.
Can the Intel Core i5-11600K run the AMD Radeon RX 7800 XT?
Yes, the Intel Core i5-11600K will run the AMD Radeon RX 7800 XT, but it's the limiting part — at 1440p the pair is 3% CPU-bound, so the Intel Core i5-11600K can't fully feed the AMD Radeon RX 7800 XT and you'll leave some frames on the table (most noticeable at 1080p and high-refresh). The swap suggestions below list CPUs that unlock more of the AMD Radeon RX 7800 XT.
Will the AMD Radeon RX 7800 XT bottleneck the Intel Core i5-11600K?
The Intel Core i5-11600K + AMD Radeon RX 7800 XT pairing is rated Grade S for 1440p gaming with a recommended 700W PSU. Resolution-by-resolution: 1080p: 6% CPU-bound, 1440p: 3% CPU-bound, 4K: 0% CPU-bound. CPU and GPU bottleneck verdicts depend on resolution — a pairing that is CPU-bound at 1080p is often perfectly balanced at 4K because the GPU does more work per frame as pixel count increases.
What PSU do I need for a Intel Core i5-11600K + AMD Radeon RX 7800 XT build?
For a Intel Core i5-11600K (125W TDP) paired with a AMD Radeon RX 7800 XT (263W TDP), we recommend a 700W power supply at minimum. This includes 40% headroom over the parts' combined TDP plus 100W for the motherboard, RAM, fans, and storage.
Run your own combination.
Swap in a different CPU, GPU, resolution, or use case and get a fresh verdict — in under 30 seconds.
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