Intel Core 7 251TE vs Intel Core i5-14400F Comparison

Head-to-Head Benchmarks

The benchmark comparison between the Intel Core 7 251TE and the Intel Core i5-14400F shows a clear overall winner, but with a few notable exceptions. The Core 7 251TE takes 14 of the 17 recorded benchmark wins, while the i5-14400F claims 3. The average benchmark scores reinforce this separation: the Core 7 251TE posts 41650 versus 32279 for the i5-14400F, a gap that places the two processors 5 percentile points apart in the global ranking (88th versus 83rd).

The most dramatic difference appears in integer math. The Core 7 251TE scores 125739 against 81524 for the i5-14400F, a 54.2% advantage. Prime number finding shows an even larger relative gap at 62.8% (140 versus 86), though the absolute scores are modest. Floating point math follows a similar pattern, with the Core 7 251TE at 85607 and the i5-14400F at 61319, a 39.6% delta. These three workloads indicate that the Core 7 251TE has a substantial throughput advantage in compute-heavy tasks.

Data encryption also favors the Core 7 251TE decisively. Its score of 22176 beats the i5-14400F's 16949 by 30.8%. Physics performance shows a 27.2% lead (1938 versus 1523), and random string sorting favors the Core 7 251TE by 21.3% (39643 versus 32680). Multithreaded workloads across Cinebench versions are consistent: R15, R20, and R23 multicore tests all show a 17.9% advantage for the Core 7 251TE, with scores of 2572 versus 2181, 10717 versus 9090, and 25518 versus 21645 respectively. PassMark multithread mirrors this at 30022 versus 25470, also a 17.9% delta.

Single-core Cinebench results follow the same pattern. R15 single-core gives the Core 7 251TE a 17.9% lead (362 versus 307), R20 shows 17.8% (1512 versus 1283), and R23 shows 17.9% (3602 versus 3055). Data compression is closer: the Core 7 251TE wins with 334399 versus 315521, a 6% margin.

The i5-14400F does win two distinct workloads. PassMark single-thread (and its duplicate singlethread entry) shows the i5-14400F ahead at 3701 versus 3568, a 3.6% edge. This is notable because the Cinebench single-core tests tell the opposite story. The other i5-14400F win is extended instructions, where it scores 19937 against 16974 for the Core 7 251TE, a 14.9% advantage. This is the largest percentage win for either processor in any test, and it shows that the Core 7 251TE is not universally dominant.

Architecture Differences

The two processors share a socket and a process node. Both use Intel Socket 1700, both are built on a 10 nm process by Intel, and both have a die size of 215 mm². The similarities end there. The Core 7 251TE is built on Bartlett Lake architecture and belongs to the Core 7 generation, while the i5-14400F uses Raptor Lake architecture, with the codename Raptor Lake-R and a Core 14th Gen series designation.

Core counts differ substantially. The Core 7 251TE has 24 cores and 32 threads, while the i5-14400F has 10 cores and 16 threads. This 14-core, 16-thread difference explains much of the multicore benchmark gap. Cache configuration also diverges. Both processors use 80 KB of L1 per core and 1.25 MB of L2 per core, but the shared L3 cache is 36 MB on the Core 7 251TE versus 20 MB on the i5-14400F. The larger L3 cache gives the Core 7 251TE more on-die storage for frequently accessed data.

Clock speeds tell a more complicated story. The Core 7 251TE has a base clock of 1.40 GHz and a boost clock of 5.40 GHz. The i5-14400F has a higher base clock of 2.50 GHz but a lower boost clock of 4.70 GHz. The Core 7 251TE's lower base clock likely helps keep its TDP at 45 watts, while the i5-14400F is rated at 65 watts. Despite the lower base clock, the Core 7 251TE reaches higher boost frequencies.

Memory support is similar on the surface: both support DDR4 and DDR5, both use a dual-channel memory bus, and both support ECC memory. The Core 7 251TE has a recorded memory bandwidth of 89.6 GB/s, while the i5-14400F has no bandwidth figure in the database. Both use PCIe Gen 5 with 16 lanes from the CPU.

Integrated graphics create a clear separation. The Core 7 251TE includes UHD Graphics 770, while the i5-14400F has no integrated graphics (listed as N/A). This means the i5-14400F requires a discrete GPU for any display output, while the Core 7 251TE can operate with its iGPU. Both processors have locked multipliers, so neither supports unlocked overclocking.

Release timing and part identifiers also differ. The Core 7 251TE was released on 2025-01-12, while the i5-14400F was released on 2024-01-07. The part numbers are SRQAXQ5ZG for the Core 7 251TE and SRN3RSRN47 for the i5-14400F.

FAQ

Q: Which processor has more cores and threads?

A: The Intel Core 7 251TE has 24 cores and 32 threads, while the Intel Core i5-14400F has 10 cores and 16 threads.

Q: How do the clock speeds compare?

A: The Core 7 251TE has a base clock of 1.40 GHz and a boost clock of 5.40 GHz. The i5-14400F has a base clock of 2.50 GHz and a boost clock of 4.70 GHz.

Q: Does the i5-14400F have integrated graphics?

A: No. The i5-14400F lists integrated graphics as N/A, so it requires a discrete GPU. The Core 7 251TE includes UHD Graphics 770.

Q: Which processor has more L3 cache?

A: The Core 7 251TE has 36 MB of shared L3 cache, while the i5-14400F has 20 MB of shared L3 cache.

Q: What is the largest benchmark margin between the two?

A: The largest margin is in prime number finding, where the Core 7 251TE leads by 62.8% (140 versus 86). The largest win for the i5-14400F is extended instructions, where it leads by 14.9% (19937 versus 16974).

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

A: Yes. Both support ECC memory and both use PCIe Gen 5 with 16 lanes from the CPU. Both also support DDR4 and DDR5 memory on a dual-channel bus.

Specification Differences

The following fields differ between the two processors:

• Cores: Core 7 251TE has 24, i5-14400F has 10
• Threads: Core 7 251TE has 32, i5-14400F has 16
• Base clock: Core 7 251TE at 1.40 GHz, i5-14400F at 2.50 GHz
• Boost clock: Core 7 251TE at 5.40 GHz, i5-14400F at 4.70 GHz
• TDP: Core 7 251TE at 45 watts, i5-14400F at 65 watts
• Architecture: Bartlett Lake versus Raptor Lake
• Codename: Bartlett Lake versus Raptor Lake-R
• Generation: Core 7 (Bartlett Lake) versus Core i5 (Raptor Lake Refresh)
• L3 cache: 36 MB shared versus 20 MB shared
• Memory bandwidth: 89.6 GB/s recorded for Core 7 251TE, no figure for i5-14400F
• Integrated graphics: UHD Graphics 770 versus N/A
• Release date: 2025-01-12 versus 2024-01-07
• Part number: SRQAXQ5ZG versus SRN3RSRN47
• Series: null versus Core 14th Gen

Fields that are identical include the Intel Socket 1700, 10 nm process node, Intel foundry, 215 mm² die size, 80 KB L1 per core, 1.25 MB L2 per core, DDR4 and DDR5 memory support, dual-channel memory bus, ECC memory support, PCIe Gen 5 with 16 lanes, Desktop market segment, Active production status, and locked multiplier.

Where Each One Wins

The Core 7 251TE is the stronger processor for multithreaded and compute-heavy workloads. Its 17.9% lead across all three Cinebench multicore tests and PassMark multithread indicates consistent scaling from its 24 cores and 32 threads. The 54.2% advantage in integer math and 39.6% lead in floating point math make it well suited for number-crunching tasks, rendering, and scientific computing. The 30.8% encryption lead and 27.2% physics advantage reinforce this positioning. The larger 36 MB L3 cache likely contributes to these wins, especially in workloads that benefit from large shared caches. The 45-watt TDP with a 5.40 GHz boost clock also means the Core 7 251TE can reach high frequencies without a high base power draw. The integrated UHD Graphics 770 provides display output capability that the i5-14400F lacks entirely.

The i5-14400F wins in two specific areas. PassMark single-thread performance shows a 3.6% edge (3701 versus 3568), even though Cinebench single-core tests favor the Core 7 251TE by 17.9%. This suggests the i5-14400F has a single-thread advantage in certain workloads or benchmark methodologies, likely related to its higher 2.50 GHz base clock. The extended instructions win is more decisive: 19937 versus 16974, a 14.9% margin. This indicates the i5-14400F handles vectorized or specialized instruction sets more efficiently despite having fewer cores and a smaller cache. Its lower launch MSRP of $196 versus $384 for the Core 7 251TE makes it the more accessible option, though the higher 65-watt TDP means it draws more power at the base level.

For workloads dominated by data compression, the Core 7 251TE still wins by 6%, but this is its smallest multicore margin. The i5-14400F's closest multicore competition comes in this area, indicating that its 10 cores and 16 threads handle compression efficiently relative to its core count. The Core 7 251TE's wins in random string sorting (21.3%) and multithread (17.9%) round out a comprehensive multicore sweep.

The data positions the Core 7 251TE as the higher-performing processor in the majority of recorded tests, with an average benchmark score 29% higher than the i5-14400F (41650 versus 32279). The i5-14400F's wins in single-thread PassMark and extended instructions show it is not without merit, particularly for workloads that favor its instruction handling or lighter thread counts. The 14.9% extended instructions win is the largest swing in the entire comparison, and it belongs to the i5-14400F.