Intel Core 7 251TE vs Intel Core Ultra 7 256V Comparison

Where Each One Wins

The Intel Core 7 251TE is the clear multi-core and productivity champion, winning 14 of the 17 recorded benchmark comparisons. Its dominance is most pronounced in integer math, where it scores 125739 against 43358 for the Core Ultra 7 256V, a 190% advantage. The Cinebench R23 multi-core test shows the largest single gap: 25518 versus 10399, a 145.4% margin. This processor is built for sustained, heavily threaded workloads such as rendering, compilation, and data processing.

The Intel Core Ultra 7 256V takes only three wins, but they reveal a different strength profile. It leads in PassMark single-thread scoring with 4029 versus 3568, an 11.4% advantage, and also wins the find prime numbers test with 192 against 140, a 27.1% margin. These results indicate that the Lunar Lake chip excels at latency-sensitive, integer-heavy single-thread tasks despite its much lower core count. The 256V also posts a GeekBench single-core score of 1990 and a multi-core score of 8643, tests that the 251TE does not have recorded in the head-to-head dataset.

The workload split is therefore clear. The 251TE dominates all Cinebench versions, both single and multi-core, with deltas ranging from 26.8% (R15 single-core) to 145.4% (R23 multi-core). It also wins data compression by 80.8%, data encryption by 58.4%, floating-point math by 46.1%, multithread by 53.7%, physics by 21.5%, and random string sorting by 76.3%. The 256V counters only in single-thread PassMark and prime number finding, plus its GeekBench entries which are not part of the shared comparison set.

Architecture Differences

The two processors come from fundamentally different design philosophies. The Intel Core 7 251TE is a desktop part on Intel Socket 1700, built on a 10 nm process at Intel's own foundry. It uses the Bartlett Lake codename and carries 24 cores with 32 threads. Its cache hierarchy consists of 80 KB of L1 per core, 1.25 MB of L2 per core, and 36 MB of shared L3. The die size is recorded at 215 mm². This is a high-core-count design aimed at parallel throughput.

The Intel Core Ultra 7 256V is a mobile part on Intel BGA 2833, built on a 3 nm process at TSMC. It uses the Lunar Lake architecture from the Core Ultra Series 2 generation. It has only 8 cores and 8 threads, with no hyperthreading. Its cache is larger per core: 192 KB of L1 per core and 2.5 MB of L2 per core, but the shared L3 is just 12 MB. No die size is recorded for this part.

The process node difference is stark: 10 nm for the 251TE versus 3 nm for the 256V, and the foundries differ as well (Intel versus TSMC). The 251TE supports ECC memory, while the 256V does not. The 251TE supports DDR4 and DDR5 memory with dual-channel bus and a recorded bandwidth of 89.6 GB/s. The 256V's memory support is listed as unknown and dependent on motherboard, though it also uses a dual-channel bus. The 251TE provides PCIe Gen 5 with 16 CPU lanes, while the 256V provides PCIe Gen 5 with only 4 CPU lanes. The 251TE uses integrated UHD Graphics 770, while the 256V uses Arc 140V graphics.

The TDP difference is substantial: 45 watts for the 251TE versus 17 watts for the 256V. The 251TE also carries a launch MSRP of $384, while no launch MSRP is recorded for the 256V. Both have locked multipliers. The 251TE was released on 2025-01-12, while the 256V was released earlier on 2024-09-23.

Head-to-Head Benchmarks

The Cinebench suite reveals the scale of the 251TE's advantage. In R23 multi-core, the 251TE scores 25518 against 10399, a 145.4% lead. The single-core R23 result is also heavily in favor of the 251TE: 3602 versus 1877.5, a 91.9% margin. Even in R15 single-core, where the gap is smallest among Cinebench tests, the 251TE leads 362 to 285.5, a 26.8% advantage. The R20 multi-core result is 10717 versus 6958, a 54% lead, and R20 single-core is 1512 versus 982, also 54%.

PassMark integer math is the single largest delta in the entire dataset. The 251TE posts 125739, more than double the 256V's 43358, a 190% lead. Data compression follows at 334399 versus 184985, an 80.8% margin. Random string sorting shows 39643 versus 22481, a 76.3% lead. Data encryption is 22176 versus 13998, a 58.4% margin. Floating-point math is 85607 versus 58576, a 46.1% lead. The multithread test shows 30022 versus 19530, a 53.7% margin. Physics is 1938 versus 1595, a 21.5% lead. Extended instructions is the closest 251TE win: 16974 versus 15643, just 8.5% ahead.

The 256V's wins are narrower in percentage terms but consistent in nature. PassMark find prime numbers goes to the 256V at 192 versus 140, a 27.1% lead. PassMark single-thread goes to the 256V at 4029 versus 3568, an 11.4% margin. The GeekBench results are recorded only for the 256V in this dataset: 8643 multi-core and 1990 single-core. The 251TE has no GeekBench score in the comparison set, so no direct delta can be computed for those tests.

The average benchmark score difference is substantial. The 251TE averages 41650 across its recorded benchmarks, placing it in the 88th percentile of all CPUs. The 256V averages 21112, placing it in the 75th percentile. The nearest rivals for the 251TE are the Intel Core Ultra 7 265H (41621, 0.1% behind), Intel Core i7-14650HX (41576, 0.2% behind), Intel Core i7-12850HX (41779, 0.3% ahead), and Intel Core i7-14700T (41914, 0.6% ahead). The 256V's nearest rivals are the AMD Ryzen 5 7530U (21133, 0.1% ahead), AMD Ryzen 5 5600G (21088, 0.1% behind), Intel Core i3-1220P (21066, 0.2% behind), and Intel Core Ultra 7 155U (21174, 0.3% ahead).

Specification Differences

The core and thread counts are the most obvious divergence: 24 cores and 32 threads for the 251TE versus 8 cores and 8 threads for the 256V. Base clocks differ at 1.40 GHz versus 2.20 GHz, and boost clocks at 5.40 GHz versus 4.80 GHz. The 251TE's higher boost clock helps explain its Cinebench single-core wins despite the 256V's PassMark single-thread victory.

Cache structures are fundamentally different. The 251TE uses 80 KB L1 per core, 1.25 MB L2 per core, and 36 MB shared L3. The 256V uses 192 KB L1 per core, 2.5 MB L2 per core, and 12 MB shared L3. The 256V has more cache per core but far less total L3.

The 251TE supports ECC memory; the 256V does not. The 251TE has 16 PCIe Gen 5 CPU lanes; the 256V has 4. The 251TE uses UHD Graphics 770; the 256V uses Arc 140V. The 251TE is a 45-watt desktop part; the 256V is a 17-watt mobile part. The 251TE uses Intel Socket 1700; the 256V uses Intel BGA 2833. The 251TE is built on 10 nm at Intel; the 256V is built on 3 nm at TSMC. The 251TE has a 215 mm² die; the 256V has no recorded die size. The 251TE has a launch MSRP of $384; the 256V has no recorded launch MSRP.

FAQ

Q: Which processor has more cores?

A: The Intel Core 7 251TE has 24 cores and 32 threads, while the Intel Core Ultra 7 256V has 8 cores and 8 threads.

Q: Which processor has the higher boost clock?

A: The Intel Core 7 251TE boosts to 5.40 GHz, while the Intel Core Ultra 7 256V boosts to 4.80 GHz.

Q: Which processor supports ECC memory?

A: The Intel Core 7 251TE supports ECC memory. The Intel Core Ultra 7 256V does not.

Q: Which processor has a higher average benchmark score?

A: The Intel Core 7 251TE has an average benchmark score of 41650, compared to 21112 for the Intel Core Ultra 7 256V. The 251TE sits in the 88th percentile of all CPUs, while the 256V sits in the 75th percentile.

Q: Which processor wins the PassMark single-thread test?

A: The Intel Core Ultra 7 256V wins PassMark single-thread with a score of 4029, an 11.4% lead over the Intel Core 7 251TE's 3568.

Q: What is the TDP difference between the two?

A: The Intel Core 7 251TE has a TDP of 45 watts, while the Intel Core Ultra 7 256V has a TDP of 17 watts.

The Verdict

The data points to a clear split by intended environment. The Intel Core 7 251TE is the stronger processor for nearly every recorded multi-threaded workload. Its 145.4% lead in Cinebench R23 multi-core, 190% lead in integer math, and 80.8% lead in data compression make it the obvious choice for desktop systems where sustained parallel performance matters. Its 88th percentile ranking and average score of 41650 confirm that it competes with high-end desktop and mobile HX parts. The 45-watt TDP and 16-lane PCIe Gen 5 support fit a desktop motherboard ecosystem.

The Intel Core Ultra 7 256V is the more efficient single-thread performer. Its PassMark single-thread score of 4029 beats the 251TE by 11.4%, and its find prime numbers score leads by 27.1%. Its 17-watt TDP and 3 nm TSMC process indicate a design focused on power efficiency. The 75th percentile ranking and average score of 21112 place it among mid-range mobile processors like the AMD Ryzen 5 7530U and Intel Core Ultra 7 155U. For a workload dominated by single-thread responsiveness in a low-power mobile package, the 256V has a role.

But for raw throughput, the 251TE wins 14 of 17 head-to-head tests, including every Cinebench variant. The 256V cannot match the 251TE in any multi-core test in the shared dataset. The verdict from the recorded measurements is unambiguous: the 251TE is the performance leader, and the 256V is the efficiency-focused alternative with a single-thread edge.