Core i7-11700K vs Core i9-9900KF
Compare the Core i7-11700K and Core i9-9900KF on real gaming and productivity benchmarks, full specifications, live retailer prices and performance-per-dollar, then jump straight to the cheapest in-stock option.
The short answer
The Core i7-11700K is the faster chip for gaming, with the two closely matched on price-to-performance.
- Core i7-11700K is about 18% faster for gaming at 1080p (gaming index 50.2 vs 42.7).
- Core i7-11700K is roughly 35% faster in multi-core work, an edge in rendering, encoding and compiling.
- Core i9-9900KF is the cheaper chip right now, by roughly 13%.
- Core i7-11700K delivers about 4% more gaming performance per dollar.
- Core i9-9900KF has a lower TDP (95W vs 125W), so it runs cooler and is easier to cool quietly.
Gaming performance
CPU-bound gaming score: a geometric mean of in-game frame rates at 1080p, normalized so the fastest gaming CPU we track = 100.
Does the CPU matter at 1440p or 4K? Much less. At higher resolutions the graphics card sets the frame rate, so the gap between two CPUs shrinks — often to nothing. The 1080p figure above is the demanding case, where the CPU is stressed and the difference actually shows.
Performance per dollar
Gaming index divided by the current lowest price — higher is better value. This moves with the market as prices change day to day.
The Core i7-11700K gives about 4% more gaming performance per dollar at today’s prices.
Full platform cost
A complete-platform price needs a live CPU price and an in-stock compatible motherboard on both sides. We can’t build one for Core i7-11700K and Core i9-9900KF right now, which is common for older sockets like AM4 where we don’t track current boards. The gaming, value and specs comparisons still apply.
Specs head-to-head
Productivity & compute
Efficiency
Gaming performance per watt (gaming index per 100W of TDP) — higher means more frames for the heat and power.
Where to buy
Core i7-11700Kfrom $449.00
| Retailer | Availability | Price | Buy |
|---|---|---|---|
| Amazon | In stock | $449.00 |  |
Core i9-9900KFfrom $399.00
| Retailer | Availability | Price | Buy |
|---|---|---|---|
| Amazon | In stock | $399.00 | |
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