Intel Core i5-14401E vs Intel Core i9-9900X Comparison

# Head-to-Head Benchmarks

The Intel Core i9-9900X and Intel Core i5-14401E produce remarkably close results across the Cinebench suite, with the older 10-core Skylake-X part edging out the newer 6-core Raptor Lake chip in every single test. The margins are consistently thin — never exceeding 1.2% — which makes the head-to-head data more about architectural efficiency versus raw core count than any decisive performance gap.

In Cinebench R15 multicore, the i9-9900X scores 1851 against 1830 for the i5-14401E, a 1.1% advantage. The single-core R15 result follows the same pattern: 261 versus 258, a 1.2% lead for the i9-9900X. That single-core margin is the largest delta of any benchmark in the comparison, hinting that the i9-9900X's higher 3.50 GHz base clock and 4.50 GHz boost clock carry more weight than the i5-14401E's 2.50 GHz base and 4.70 GHz boost in lightly threaded workloads.

Moving to Cinebench R20, the i9-9900X again wins multicore with 7713 points to the i5-14401E's 7627, a 1.1% gap. The single-core R20 result shows 1088 versus 1076, also a 1.1% difference. The consistency across R15, R20, and R23 is striking — the deltaPct holds at 1.1% for every multicore test and hovers between 1.1% and 1.2% for single-core runs. This suggests the i9-9900X's 10 cores and 20 threads deliver a slight throughput advantage over the i5-14401E's 6 cores and 12 threads, even though the newer architecture is more efficient per core.

Cinebench R23 multicore puts the i9-9900X at 18365 points versus 18161 for the i5-14401E, again a 1.1% win. The R23 single-core test shows 2592 against 2564, with the same 1.1% delta. Notably, the i5-14401E does not have a Geekbench entry in the head-to-head data, while the i9-9900X has standalone Geekbench scores of 9109 multicore and 1429 single-core. Without a direct Geekbench comparison, the Cinebench suite remains the only complete cross-platform picture.

The i9-9900X wins all six head-to-head benchmarks. That clean sweep, however, comes with a caveat: the average benchmark score for the i9-9900X is 5301, while the i5-14401E averages 5253. Both processors sit at the 60th percentile among all CPUs, meaning they occupy the same tier in the overall performance distribution. The i9-9900X's nearest rivals — the AMD Ryzen Threadripper 1920X at 5306, the AMD EPYC 7281 at 5315, the Intel Core i9-10900KF at 5316, and the Intel Core i9-13900TE at 5342 — all score within 0.8% of it. The i5-14401E's rivals are similarly clustered: the Intel Xeon E5-2699A v4 at 5259, the Intel Core i7-11700B at 5241, the Intel Core i9-10850K at 5240, and the Intel Core i5-13400T at 5210. These rival clusters confirm that both chips sit in the same performance band, despite their architectural differences.

# FAQ

Q: Which processor wins more benchmarks in the head-to-head comparison?

A: The Intel Core i9-9900X wins all six head-to-head benchmarks against the Intel Core i5-14401E. The largest margin is 1.2% in Cinebench R15 single-core, while all other tests show a 1.1% delta.

Q: How much faster is the i9-9900X in multi-core workloads?

A: In Cinebench R23 multicore, the i9-9900X scores 18365 versus 18161 for the i5-14401E, a 1.1% advantage. The R20 multicore test shows 7713 against 7627, also 1.1% ahead.

Q: Does the i5-14401E beat the i9-9900X in any single-core test?

A: No. The i9-9900X leads in every single-core test: 261 versus 258 in R15, 1088 versus 1076 in R20, and 2592 versus 2564 in R23. The margins range from 1.1% to 1.2%.

Q: What are the average benchmark scores for both processors?

A: The i9-9900X has an average benchmark score of 5301, while the i5-14401E averages 5253. Both rank at the 60th percentile among all CPUs.

Q: Does the i5-14401E support more memory types than the i9-9900X?

A: Yes. The i5-14401E supports DDR4 and DDR5, while the i9-9900X supports only DDR4. The i5-14401E also supports ECC memory, which the i9-9900X does not.

Q: Which processor has a higher boost clock?

A: The i5-14401E boosts to 4.70 GHz, while the i9-9900X boosts to 4.50 GHz. However, the i9-9900X has a higher base clock at 3.50 GHz versus 2.50 GHz for the i5-14401E.

# Where Each One Wins

The i9-9900X wins across every benchmark in this comparison, but the use-case split is more nuanced than a simple sweep suggests. For multi-threaded productivity, the i9-9900X's 10 cores and 20 threads give it a consistent edge. Cinebench R23 multicore shows 18365 points, and the R20 multicore result of 7713 reinforces its strength in rendering and video encoding workloads that scale with core count. The 1.1% margin over the i5-14401E is small, but it holds uniformly across R15, R20, and R23, indicating that the extra cores translate into real throughput gains even when the newer architecture is more efficient per thread.

For single-threaded tasks, the i9-9900X also leads, but the margin is equally slim. The R15 single-core score of 261 versus 258 and the R20 single-core score of 1088 versus 1076 show that the older Skylake-X design still holds its own in lightly threaded applications like legacy software or basic office tasks. The i5-14401E's higher boost clock of 4.70 GHz does not overcome the i9-9900X's higher base clock of 3.50 GHz in these tests.

However, the i5-14401E wins in areas not captured by the Cinebench suite. It supports DDR5 memory, which can offer higher bandwidth in memory-sensitive workloads, and it includes integrated UHD Graphics 730 — the i9-9900X has no integrated graphics at all. For a system that needs a display output without a discrete GPU, the i5-14401E is the practical choice. It also supports ECC memory, making it viable for entry-level server or workstation builds where data integrity is critical.

The i5-14401E's 65 W TDP versus the i9-9900X's 165 W TDP is another differentiator. The lower power envelope makes the i5-14401E suitable for compact builds or systems with modest cooling, while the i9-9900X demands a more substantial cooling solution. The i5-14401E also uses the Intel Socket 1700 platform with PCIe Gen 5 support (16 lanes), whereas the i9-9900X uses the older Socket 2066 with PCIe Gen 3 (44 lanes). For users needing many PCIe lanes for multiple GPUs or expansion cards, the i9-9900X's 44 lanes is a clear advantage, despite the older generation.

# Specification Differences

The two processors differ across nearly every core specification. The i9-9900X has 10 cores and 20 threads, while the i5-14401E has 6 cores and 12 threads. Base clocks are 3.50 GHz for the i9-9900X and 2.50 GHz for the i5-14401E; boost clocks are 4.50 GHz and 4.70 GHz, respectively. TDP is a major gap: 165 W for the i9-9900X versus 65 W for the i5-14401E.

Cache layouts diverge as well. The i9-9900X uses 64 KB L1 per core, 1 MB L2 per core, and 19.25 MB shared L3. The i5-14401E has 80 KB L1 per core, 1.25 MB L2 per core, and 20 MB shared L3. The i5-14401E also has a listed die size of 215 mm², while the i9-9900X has no die size figure.

Memory support differs fundamentally. The i9-9900X supports DDR4 with a quad-channel memory bus and 85.3 GB/s memory bandwidth, but no ECC. The i5-14401E supports DDR4 and DDR5 with a dual-channel memory bus, and it has ECC support. The memory bandwidth for the i5-14401E is not listed.

PCIe capabilities also differ. The i9-9900X offers PCIe Gen 3 with 44 lanes (CPU only). The i5-14401E offers PCIe Gen 5 with 16 lanes (CPU only). The i5-14401E includes integrated UHD Graphics 730, while the i9-9900X has no integrated graphics.

The i9-9900X has an unlocked multiplier, whereas the i5-14401E's multiplier is locked. The i9-9900X has a launch MSRP of $989. The i5-14401E has no launch MSRP listed. The i9-9900X is end-of-life and was released on 2018-10-18; the i5-14401E is active and was released on 2024-06-30. The i9-9900X's part number is SREZ7, and the i5-14401E's is Q49JSRNJS.

# Architecture Differences

The architectural split between these two CPUs is a study in generational evolution. The i9-9900X is built on Intel's Skylake-X architecture, using a 14 nm process node. It belongs to the Core i9 X-Series 9th Gen family. The i5-14401E uses Raptor Lake-R architecture on a 10 nm process node, part of the Core 14th Gen (Raptor Lake Refresh) series. Both are manufactured by Intel, but the process node difference — 14 nm versus 10 nm — explains much of the efficiency gap, even though the newer chip has fewer cores.

The i9-9900X's Skylake-X design prioritizes core count and memory bandwidth. Its quad-channel DDR4 memory controller feeds 10 cores with 85.3 GB/s of bandwidth, and its 44 PCIe Gen 3 lanes allow extensive expansion. The L3 cache is 19.25 MB shared across all cores, and each core gets 64 KB L1 and 1 MB L2. This layout is typical of high-end desktop (HEDT) parts aimed at multi-threaded workloads.

The i5-14401E's Raptor Lake-R architecture is a more modern, efficiency-focused design. It uses a 10 nm process, which allows higher clock speeds at lower power — the 65 W TDP is less than half the i9-9900X's 165 W. Each core has 80 KB L1 and 1.25 MB L2, and the shared L3 is 20 MB. The dual-channel memory controller supports both DDR4 and DDR5, with ECC capability. PCIe Gen 5 support on 16 lanes provides high-bandwidth connectivity for modern GPUs and NVMe drives, though with fewer total lanes than the i9-9900X.

The i5-14401E includes integrated UHD Graphics 730, a feature entirely absent from the i9-9900X. This makes the i5-14401E a self-contained platform for basic display output. The i9-9900X requires a discrete GPU for any video output.

The i9-9900X's unlocked multiplier is a feature for enthusiasts, allowing overclocking. The i5-14401E's locked multiplier means it runs at stock speeds only. The i9-9900X is end-of-life, while the i5-14401E remains an active product. The newer chip's smaller process node and more modern architecture deliver comparable performance to the older HEDT part, but with far lower power draw and additional modern features like DDR5 and ECC support.