Intel Core 9 273PE vs Intel Core i5-14400 Comparison

Head-to-Head Benchmarks

The benchmark data shows a dominant performance profile for the Intel Core 9 273PE. Across the 17 recorded comparisons, the Core 9 273PE takes 15 wins, while the Intel Core i5-14400 manages only 2. The margin is not close in most workloads. In Cinebench R15, R20, and R23, both multi-core and single-core tests show a consistent 46.8% to 46.9% advantage for the Core 9 273PE. For example, in Cinebench R23 multi-core, the Core 9 273PE scores 31288 against 21315 for the i5-14400. The single-core R23 result follows the same pattern: 4417 versus 3009.

PassMark results reinforce the same story in compute-heavy tasks. The Core 9 273PE leads by 75.3% in floating point math (107884 versus 61549) and by 70% in integer math (139410 versus 82017). Prime number finding shows the largest relative gap at 153.8% (203 versus 80), and physics simulation shows a 123.5% delta (3120 versus 1396). Data compression favors the Core 9 273PE by 28.9% (405885 versus 314995), and data encryption by 35.8% (22719 versus 16731). The multithread PassMark score sits at 36810 for the Core 9 273PE against 25080 for the i5-14400, a 46.8% lead.

The only losses for the Core 9 273PE appear in PassMark single-thread tests. The i5-14400 records 3741 in both passmark_single_thread and passmark_singlethread, while the Core 9 273PE records 3650. That is a 2.4% deficit. It is a narrow margin, but it is the one area where the i5-14400 posts a higher score. Importantly, the Cinebench single-core results tell the opposite story, with the Core 9 273PE ahead by 46.9% in R15, R20, and R23. The discrepancy between PassMark and Cinebench single-thread measurements suggests the i5-14400 has an edge in certain legacy or specific instruction patterns, but the Core 9 273PE dominates in the Cinebench rendering workload.

Overall, the average benchmark score for the Core 9 273PE is 49845, compared to 32115 for the i5-14400. The Core 9 273PE sits at the 90th percentile among all CPUs, while the i5-14400 sits at the 82nd percentile. In the nearest rival comparison, the Core 9 273PE is effectively tied with the AMD Ryzen AI Max+ 388 (delta 0.1%), and it is 0.9% ahead of the Intel Core i5-14600KF. The i5-14400, by contrast, sits right next to the Intel Core i7-12800H (delta 0%) and the Intel Core i7-13705H (delta 0.1%). That places the two processors in different competitive tiers entirely.

Architecture Differences

The internal design of these two Intel parts diverges significantly. The Intel Core 9 273PE is built on Bartlett Lake and uses a 10 nm process node. The Intel Core i5-14400 uses Raptor Lake-R, also on a 10 nm node, but the architecture is a different generation. The Core 9 273PE belongs to the "Core 9 (Bartlett Lake)" generation, while the i5-14400 belongs to "Core i5 (Raptor Lake Refresh)". Both are produced by Intel and both fit the Intel Socket 1700.

The core and thread counts differ. The Core 9 273PE has 12 cores and 24 threads. The i5-14400 has 10 cores and 16 threads. That difference in thread count is a major factor in the multi-threaded benchmark results. Cache configuration also differs. Both chips use 80 KB of L1 per core, but the L2 cache is 2 MB per core on the Core 9 273PE versus 1.25 MB per core on the i5-14400. The shared L3 cache is 36 MB on the Core 9 273PE versus 20 MB on the i5-14400. The larger cache hierarchy on the Core 9 273PE helps explain its advantage in data-heavy workloads like compression and encryption.

Clock speeds move in opposite directions depending on the metric. The i5-14400 has a higher base clock at 2.50 GHz versus 2.30 GHz for the Core 9 273PE. The boost clock, however, goes strongly to the Core 9 273PE at 5.70 GHz versus 4.70 GHz for the i5-14400. Both processors have a 65 W TDP. Neither has an unlocked multiplier. Both support DDR4 and DDR5 memory, dual-channel memory buses, and ECC memory. The memory bandwidth field is listed for the Core 9 273PE at 89.6 GB/s, while the i5-14400 has no recorded bandwidth figure. Both use PCIe Gen 5 with 16 lanes from the CPU and both integrate UHD Graphics 730.

The die size is recorded for the i5-14400 at 215 mm², but no die size is listed for the Core 9 273PE. Release dates differ, with the i5-14400 released in January 2024 and the Core 9 273PE released in March 2026. The production status for both is Active.

Where Each One Wins

The Intel Core 9 273PE wins in essentially every rendering, compute, and multi-threaded workload recorded. Cinebench R15, R20, and R23 all show a consistent 46.8% to 46.9% advantage in both single-core and multi-core. PassMark tests for encryption, compression, extended instructions, prime numbers, floating point math, integer math, physics, random string sorting, and multithread all go to the Core 9 273PE. The margins range from 24.3% in extended instructions to 153.8% in prime number finding. This makes the Core 9 273PE the clear choice for CPU-heavy productivity, rendering, scientific computing, and any task that scales with threads or cache.

The Intel Core i5-14400 wins only in the PassMark single-thread tests, with a 2.4% margin. That is a narrow victory and it does not appear in the Cinebench single-core tests. The i5-14400 also has a higher base clock, which may contribute to its single-thread PassMark result. For workloads that are lightly threaded and sensitive to base frequency behavior in the PassMark suite, the i5-14400 holds a small edge. But it is a minor and isolated win compared to the broad dominance of the Core 9 273PE.

The percentile data reinforces the split. The Core 9 273PE sits at the 90th percentile among all CPUs, while the i5-14400 sits at the 82nd. The nearest rivals for the Core 9 273PE include the AMD Ryzen AI Max+ 388 and the Intel Core i5-14600KF, both within 1% of its average score. The i5-14400 sits near the Intel Core i7-12800H and Intel Core i7-13705H, all within 0.2%. That puts the i5-14400 in the company of mobile and older desktop parts, while the Core 9 273PE competes with high-end desktop and premium APU silicon.

Specification Differences

The two processors differ in several recorded fields. Core count: 12 versus 10. Thread count: 24 versus 16. Base clock: 2.30 GHz versus 2.50 GHz. Boost clock: 5.70 GHz versus 4.70 GHz. L2 cache: 2 MB per core versus 1.25 MB per core. L3 cache: 36 MB shared versus 20 MB shared. Memory bandwidth: 89.6 GB/s for the Core 9 273PE, not recorded for the i5-14400. Die size: 215 mm² for the i5-14400, not recorded for the Core 9 273PE. Release date: March 2026 versus January 2024. Architecture and codename also differ: Bartlett Lake versus Raptor Lake-R. The launch MSRP for the Core 9 273PE is $549. The launch MSRP for the i5-14400 is $221.

Shared specifications include the 10 nm process node, Intel as the foundry, 65 W TDP, Intel Socket 1700, DDR4 and DDR5 memory support, dual-channel memory bus, ECC support, PCIe Gen 5 with 16 lanes, UHD Graphics 730 integrated graphics, and a locked multiplier. Both are desktop market parts with Active production status. Both have 80 KB L1 cache per core. The part numbers are SA4QD for the Core 9 273PE and SRN3QSRN46 for the i5-14400.

FAQ

Q: Which processor has more cores and threads?

A: The Intel Core 9 273PE has 12 cores and 24 threads. The Intel Core i5-14400 has 10 cores and 16 threads.

Q: How large is the L3 cache difference?

A: The Core 9 273PE has 36 MB of shared L3 cache. The i5-14400 has 20 MB of shared L3 cache.

Q: Which processor has the higher boost clock?

A: The Core 9 273PE boosts to 5.70 GHz. The i5-14400 boosts to 4.70 GHz. The i5-14400 has the higher base clock at 2.50 GHz versus 2.30 GHz.

Q: Do both processors support ECC memory and PCIe Gen 5?

A: Yes. Both support ECC memory, dual-channel DDR4 and DDR5, and PCIe Gen 5 with 16 lanes from the CPU.

Q: Which processor scored better in Cinebench R23 multi-core?

A: The Core 9 273PE scored 31288, which is 46.8% higher than the i5-14400 score of 21315.

Q: In which benchmark did the i5-14400 outperform the Core 9 273PE?

A: The i5-14400 recorded 3741 in PassMark single-thread tests, 2.4% higher than the Core 9 273PE score of 3650.

The Verdict

The recorded data points to a clear performance hierarchy. The Intel Core 9 273PE delivers substantially higher scores across rendering, encryption, compression, math, physics, and multithreaded workloads. Its 46.8% average lead in Cinebench tests and its strong PassMark results place it in the 90th percentile of all CPUs. The i5-14400, at the 82nd percentile, is a competent mid-range desktop part, but it is not in the same performance class.

The i5-14400 does have a few mitigating factors. It carries a lower launch MSRP of $221 against $549 for the Core 9 273PE. It also wins the PassMark single-thread test by 2.4%, and it has a higher base clock. For users whose workloads are dominated by the specific instruction patterns measured in PassMark single-thread, the i5-14400 offers a small advantage. But the Cinebench single-core results contradict that, showing the Core 9 273PE ahead by 46.9%.

The choice depends on workload and budget context. The data shows the Core 9 273PE as the stronger processor for multi-threaded productivity, rendering, and compute-heavy tasks. The i5-14400 is the more modest part, with a narrower feature set and lower benchmark averages. The nearest rival data confirms the separation: the Core 9 273PE trades blows with the AMD Ryzen AI Max+ 388 and Intel Core i5-14600KF, while the i5-14400 sits alongside the Intel Core i7-12800H and Intel Core i7-13705H. For anyone building around Socket 1700 and prioritizing raw compute, the Core 9 273PE is the superior choice. For lighter workloads, the i5-14400 remains a functional desktop processor, but its benchmark profile is clearly below the Core 9 273PE in almost every recorded test.