Intel Core i5-10400F + NVIDIA GeForce RTX 4070
Will they bottleneck? Here’s the verdict at 1440p gaming — and how it shifts with resolution.
Intel Core i5-10400F
6c / 12t · 4.3 GHz · 65W
NVIDIA GeForce RTX 4070
12 GB VRAM · 29.1 TFLOPS · 200W
6% CPU-bound. The Intel Core i5-10400F is holding back the NVIDIA GeForce RTX 4070.
CPU limits 1440p performance — single-thread headroom is the constraint at this resolution.
GRADE
B
PSU MIN
500W
CONFIDENCE
86%
THE SHORT ANSWER
The Intel Core i5-10400F + NVIDIA GeForce RTX 4070 pairing is rated Grade B for 1440p gaming with a recommended 500W PSU. Resolution-by-resolution: 1080p: 9% CPU-bound, 1440p: 6% CPU-bound, 4K: 2% 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 i5-10400F + NVIDIA GeForce RTX 4070 pair is 6% CPU-limited at 1440p. Same pattern at 1080p and 4K. As a build, it grades solid mid-range (B).
Expect around 265 FPS in League of Legends and ~73 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 AMD Ryzen 5 3600 is the closest higher-tier option — see the swap recommendations below for the FPS lift. Plan on at least a 500W PSU — that includes headroom for transient spikes on the NVIDIA GeForce RTX 4070.
The same pair gives a different answer at 1080p, 1440p, and 4K.
Higher resolutions push work onto the GPU — watch the balance shift.
1080P
9% CPU-bound
1440P
6% CPU-bound
4K
2% CPU-bound
Expected frame rates in 10 popular games.
At 1440p, high settings — measured where we have benchmarks, modeled otherwise.
- League of Legends265 fps · Estimated · low
- Apex Legends232 fps · Estimated · low
- Forza Horizon 5117 fps · Estimated · low
- The Witcher 3: Wild Hunt121 fps · Estimated · low
- Call of Duty: Warzone94 fps · Estimated · low
- Alan Wake 277 fps · Estimated · low
- Hogwarts Legacy74 fps · Estimated · low
- Starfield73 fps · Estimated · low
Compare similar builds.
Swap one part and see how the verdict moves.
These CPUs would unlock more of the NVIDIA GeForce RTX 4070.
A better-matched processor closes the gap — closest tiers first.
Building around the NVIDIA GeForce RTX 4070? Read our tested guide: Best CPU for the NVIDIA GeForce RTX 4070 →
Common questions.
Straight answers for the Intel Core i5-10400F + NVIDIA GeForce RTX 4070.
Can the Intel Core i5-10400F run the NVIDIA GeForce RTX 4070?
Yes, the Intel Core i5-10400F will run the NVIDIA GeForce RTX 4070, but it's the limiting part — at 1440p the pair is 6% CPU-bound, so the Intel Core i5-10400F can't fully feed the NVIDIA GeForce RTX 4070 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 NVIDIA GeForce RTX 4070.
Will the NVIDIA GeForce RTX 4070 bottleneck the Intel Core i5-10400F?
The Intel Core i5-10400F + NVIDIA GeForce RTX 4070 pairing is rated Grade B for 1440p gaming with a recommended 500W PSU. Resolution-by-resolution: 1080p: 9% CPU-bound, 1440p: 6% CPU-bound, 4K: 2% 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 i5-10400F + NVIDIA GeForce RTX 4070 build?
For a Intel Core i5-10400F (65W TDP) paired with a NVIDIA GeForce RTX 4070 (200W TDP), we recommend a 500W 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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