Intel Core i5-1350P vs Intel Core i9-9900KF Comparison

FAQ

Q: Which CPU has more cores and threads?

A: The Intel Core i5-1350P has 12 cores and 16 threads, while the Intel Core i9-9900KF has 8 cores and 16 threads. The i5-1350P provides 4 additional physical cores.

Q: What is the difference in boost clock speeds?

A: The Intel Core i9-9900KF boosts to 5.00 GHz, which is higher than the i5-1350P's 4.70 GHz boost. However, the i5-1350P has a higher single-core score in every recorded benchmark.

Q: Which processor supports DDR5 memory?

A: The Intel Core i5-1350P supports both DDR4 and DDR5 memory, while the Intel Core i9-9900KF is limited to DDR4 only. Both use dual-channel memory buses.

Q: What is the TDP difference between the two?

A: The Intel Core i5-1350P has a TDP of 28 watts, while the Intel Core i9-9900KF has a TDP of 95 watts. The i5-1350P is rated for significantly lower power draw.

Q: Which CPU has integrated graphics?

A: The Intel Core i5-1350P includes Iris Xe Graphics 80EU, while the Intel Core i9-9900KF has no integrated graphics. The i9-9900KF requires a discrete GPU.

Q: What are the release dates?

A: The Intel Core i5-1350P was released on 2023-01-03, while the Intel Core i9-9900KF was released on 2019-01-07. The i9-9900KF is marked as end-of-life, while the i5-1350P is active.

Architecture Differences

The Intel Core i5-1350P is built on Raptor Lake architecture with a 10 nm process node, while the Intel Core i9-9900KF uses Coffee Lake architecture on a 14 nm process. This generational leap in manufacturing technology is a primary factor in the performance gap. The i5-1350P belongs to the Raptor Lake-P family, designed for mobile platforms, whereas the i9-9900KF is a Coffee Lake Refresh desktop part.

Cache hierarchies differ notably. The i5-1350P allocates 80 KB of L1 cache per core and 2 MB of L2 cache per core, with 12 MB of shared L3 cache. The i9-9900KF provides 64 KB of L1 per core, 256 KB of L2 per core, and 16 MB of shared L3. Despite the i9 having a larger total L3, the i5's per-core L2 allocation is substantially larger.

The i5-1350P supports PCIe Gen 4 with 20 lanes (CPU only), while the i9-9900KF uses PCIe Gen 3 with 16 lanes. The i5-1350P also includes integrated Iris Xe Graphics 80EU, a feature entirely absent from the i9-9900KF. Memory support diverges, with the i5 handling both DDR4 and DDR5, while the i9 is restricted to DDR4. The i9-9900KF has an unlocked multiplier, unlike the i5-1350P.

The i5-1350P's die size is not recorded, but the i9-9900KF measures 180.3 mm². The i5-1350P is a mobile segment processor on Intel BGA 1744 socket, while the i9-9900KF is a desktop processor on Intel Socket 1151. Production status also differs, with the i5 still active and the i9 marked end-of-life.

Where Each One Wins

The Intel Core i5-1350P wins in every recorded head-to-head benchmark, taking all 6 tests in the comparison. Its advantage is consistent across both multi-core and single-core workloads, ranging from 7.8% to 8.1% depending on the test. The i5-1350P's 12-core configuration provides a clear edge in heavily threaded applications like Cinebench R23 multi-core.

The Intel Core i9-9900KF does not win any benchmark in the recorded data. However, it retains strengths outside the benchmark suite: it supports overclocking due to its unlocked multiplier, which the i5-1350P cannot offer. The i9 also has a higher boost clock of 5.00 GHz, which may appeal to users who prioritize raw clock speed in certain legacy workloads not covered here.

For users requiring integrated graphics, the i5-1350P is the only option between the two. The i9-9900KF's lack of iGPU means it cannot function without a discrete graphics card. The i5-1350P also supports newer PCIe Gen 4 connectivity, which is beneficial for fast storage and modern GPUs.

In terms of power efficiency, the i5-1350P's 28-watt TDP is a fraction of the i9-9900KF's 95-watt TDP, making the i5 far more suitable for compact or thermally constrained systems. The i9-9900KF's desktop heritage and higher power envelope suit stationary builds where power draw is less of a concern.

Specification Differences

| Specification | Intel Core i5-1350P | Intel Core i9-9900KF |

|----------------|---------------------|----------------------|

| Cores | 12 | 8 |

| Threads | 16 | 16 |

| Base Clock | 1900.00 MHz | 3600.00 MHz |

| Boost Clock | 4.70 GHz | 5.00 GHz |

| TDP | 28 W | 95 W |

| Socket | Intel BGA 1744 | Intel Socket 1151 |

| Architecture | Raptor Lake | Coffee Lake |

| Process Node | 10 nm | 14 nm |

| L1 Cache | 80 KB (per core) | 64 KB (per core) |

| L2 Cache | 2 MB (per core) | 256 KB (per core) |

| L3 Cache | 12 MB (shared) | 16 MB (shared) |

| Memory Support | DDR4, DDR5 | DDR4 |

| Memory Bandwidth | Not recorded | 42.7 GB/s |

| PCIe | Gen 4, 20 Lanes (CPU only) | Gen 3, 16 Lanes (CPU only) |

| Integrated Graphics | Iris Xe Graphics 80EU | None |

| Market Segment | Mobile | Desktop |

| Production Status | Active | End-of-life |

| Release Date | 2023-01-03 | 2019-01-07 |

| Launch MSRP | $320 | $488 |

| Multiplier Unlocked | No | Yes |

The i5-1350P has 4 more cores but a lower base clock (1900 MHz vs 3600 MHz) and a lower boost clock (4.70 vs 5.00 GHz). The i9-9900KF has a larger L3 cache and higher memory bandwidth when measured, but the i5 supports newer memory standards and PCIe versions. The i5 includes iGPU, while the i9 does not.

Head-to-Head Benchmarks

The Intel Core i5-1350P dominates the entire benchmark suite. In Cinebench R15 multi-core, the i5 scores 1664 against the i9's 1541, an 8% advantage. Single-core R15 shows a 7.8% lead (234 vs 217). These margins carry through every subsequent test.

Cinebench R20 multi-core results show the i5 at 6935 and the i9 at 6422, again an 8% difference. Single-core R20 gives the i5 an 8.1% lead (979 vs 906). The pattern continues in Cinebench R23, where multi-core scores are 16514 (i5) versus 15292 (i9), an 8% gap, and single-core scores are 2331 versus 2158, also an 8% difference.

The i9-9900KF does have additional Geekbench scores in its individual benchmark list (8970 multi-core and 1706 single-core), but these have no direct comparison in the head-to-head data. The i5-1350P's average benchmark score is 4776, placing it at the 59th percentile of all CPUs, while the i9-9900KF averages 4652 at the 58th percentile.

The i5-1350P's nearest rivals include the Intel Xeon W-1290E (4775 avg, 0% delta), AMD EPYC 7252 (4772 avg, 0.1% delta), Intel Xeon E-2386G (4799 avg, -0.5% delta), and AMD Ryzen 9 3950X (4807 avg, -0.6% delta). The i9-9900KF's rivals include the Intel Core i9-10900F (4664 avg, -0.3% delta), i9-11900T (4685 avg, -0.7% delta), i9-10900 (4614 avg, 0.8% delta), and i9-10900E (4708 avg, -1.2% delta).

The Verdict

The benchmark data is unambiguous: the Intel Core i5-1350P outperforms the Intel Core i9-9900KF in every recorded test, with a consistent 8% margin across multi-core workloads and a 7.8% to 8.1% margin in single-core tests. The i5 achieves this with 12 cores versus 8, newer architecture, and a dramatically lower 28-watt TDP compared to 95 watts.

Users who prioritize multi-threaded productivity, such as video rendering or compilation, should choose the i5-1350P based on its higher scores in all Cinebench multi-core tests. Those who value single-core responsiveness will also find the i5 superior, as it leads in every single-core benchmark despite the i9's higher boost clock.

The i5-1350P also offers modern platform features: DDR5 support, PCIe Gen 4, integrated Iris Xe graphics, and an active production status. The i9-9900KF is end-of-life, limited to DDR4 and PCIe Gen 3, and requires a separate GPU. Its only advantage in the recorded specifications is a larger L3 cache, higher base and boost clocks, and an unlocked multiplier for overclocking.

For a new system, the data clearly favors the i5-1350P. For an existing Socket 1151 platform, the i9-9900KF could still be a reasonable upgrade, but its 58th percentile ranking versus the i5's 59th percentile shows the i5 holds a slight overall edge. The i9-9900KF's launch MSRP was $488, while the i5-1350P launched at $320, though pricing comparisons are not part of this analysis.

The verdict is straightforward: the mobile-designed i5-1350P outruns the desktop i9-9900KF across all measured workloads, with better efficiency and modern features. The i9-9900KF remains viable only for those who specifically need its overclocking capability or already own a compatible 1151 motherboard.