Intel Core 7 251E vs Intel Core Ultra 7 265 Comparison

Head-to-Head Benchmarks

The data available for direct comparison is asymmetrical. The Intel Core 7 251E has no recorded benchmark scores in the database, while the Intel Core Ultra 7 265 has a full suite of Cinebench and PassMark results. Consequently, the head-to-head analysis is based entirely on the Core Ultra 7 265’s recorded performance and its positioning against its nearest rivals, as the Core 7 251E’s absence of scores prevents any direct numerical comparison between the two.

The Intel Core Ultra 7 265 delivers a Cinebench R23 multi-core score of 42,216 points and a single-core score of 5,960 points. In Cinebench R20, it scores 6,268 multi-core and 884 single-core, while in Cinebench R15 it records 4,255 multi-core and 600 single-core. These results place the processor in the 93rd percentile among all CPUs in the database, with an average benchmark score of 64,640.

The nearest rivals for the Core Ultra 7 265 are all server-class or close desktop equivalents. The AMD EPYC 4464P posts an average score of 64,823, which is 0.3% higher than the Core Ultra 7 265. The AMD EPYC 9124 also sits slightly ahead with 65,104 points, a 0.7% margin. On the other side, the Intel Core Ultra 7 265F trails by 0.3% with 64,438 points, and the AMD EPYC 7343 is 0.7% behind at 64,202. The deltas are narrow, all within a single percentage point, indicating that the Core Ultra 7 265 competes at a very tight performance band against these established processors.

In PassMark testing, the Core Ultra 7 265 shows specific strengths. The multi-thread score is 49,682, while the single-thread score is 4,689. Data compression reaches 522,983, and data encryption records 40,456. Floating point math posts 172,776, integer math 134,773, and extended instructions 41,478. Random string sorting completes at 63,833, while physics testing records 2,923. Prime number finding shows 418. These figures indicate a processor that handles heavy parallel workloads and cryptography-related tasks with consistent output.

Because the Core 7 251E lacks any benchmark entries, the database cannot confirm a single head-to-head win for either processor. The Core Ultra 7 265’s 93rd percentile ranking and its average score of 64,640, however, provide a reference point for where it stands relative to the broader CPU landscape. The Core 7 251E’s 50th percentile rank, based on no recorded scores, suggests it occupies a different performance tier, but without measurements, that inference remains speculative.

Where Each One Wins

The Intel Core Ultra 7 265 demonstrates clear strengths in multi-threaded and single-threaded rendering workloads. Its Cinebench R23 multi-core score of 42,216 and single-core score of 5,960 show balanced capability across both parallel and latency-sensitive tasks. The PassMark multi-thread score of 49,682 reinforces this, indicating strong performance in video encoding, 3D rendering, and scientific computation. The data compression score of 522,983 is particularly notable, suggesting efficiency in file archiving, database operations, and workload consolidation. The extended instructions score of 41,478 points to solid SIMD and vector processing capability, which benefits media processing and engineering simulation.

The Core Ultra 7 265 also wins in memory bandwidth scenarios. It supports DDR5 memory over a dual-channel bus with a recorded bandwidth of 102.4 GB/s. The integrated Arc Xe-LPG Graphics 32EU provides a modern graphics solution for desktop use without a discrete GPU. Its 20 cores and 20 threads mean each core has a dedicated thread, which can reduce context-switching overhead in certain workloads.

The Intel Core 7 251E cannot be assigned wins from the recorded data due to the absence of benchmark scores. Its configuration, however, includes 24 cores and 32 threads, which is a higher core and thread count than the Core Ultra 7 265. It also features a larger shared L3 cache of 36 MB compared to 30 MB on the Core Ultra 7 265. The Core 7 251E supports both DDR4 and DDR5 memory, while the Core Ultra 7 265 supports only DDR5. The Core 7 251E also includes ECC memory support, which the Core Ultra 7 265 lacks. These specification differences suggest the Core 7 251E may be positioned for stability-focused or memory-flexible environments, but the database holds no performance data to confirm any advantage.

The Verdict

The recorded data clearly favors the Intel Core Ultra 7 265. It has a full suite of benchmark scores, a 93rd percentile ranking, and an average benchmark score of 64,640. Its nearest rivals, including the AMD EPYC 4464P and AMD EPYC 9124, sit within 0.7% of its average score, meaning the Core Ultra 7 265 competes effectively with server-class silicon in the database’s measurements.

The Intel Core 7 251E, by contrast, has no benchmark scores and a 50th percentile rank by default. The database cannot verify its performance, so any claim of superiority for the Core 7 251E would lack evidence. Users who rely on measured performance should consider the Core Ultra 7 265 the proven option. Those who prioritize the Core 7 251E’s higher core count, 32 threads, larger L3 cache, ECC support, or DDR4 compatibility would be making a choice based on specifications rather than recorded results. The data alone does not support preferring the Core 7 251E.

FAQ

Q: Which processor has a higher Cinebench R23 multi-core score?

A: The Intel Core Ultra 7 265 records a Cinebench R23 multi-core score of 42,216. The Intel Core 7 251E has no recorded benchmark scores in the database.

Q: How does the Intel Core Ultra 7 265 compare to its nearest rival, the AMD EPYC 4464P?

A: The AMD EPYC 4464P has an average score of 64,823, which is 0.3% higher than the Core Ultra 7 265’s average of 64,640.

Q: What is the core and thread count for each processor?

A: The Intel Core 7 251E has 24 cores and 32 threads. The Intel Core Ultra 7 265 has 20 cores and 20 threads.

Q: Does the Intel Core Ultra 7 265 support ECC memory?

A: No, the Core Ultra 7 265 does not support ECC memory. The Intel Core 7 251E does support ECC memory.

Q: What memory types does each processor support?

A: The Intel Core 7 251E supports DDR4 and DDR5 memory. The Intel Core Ultra 7 265 supports only DDR5 memory.

Q: What is the average benchmark score of the Intel Core Ultra 7 265?

A: The average benchmark score is 64,640, placing it in the 93rd percentile among all CPUs in the database.

Architecture Differences

The Intel Core 7 251E and Intel Core Ultra 7 265 differ substantially in architecture, manufacturing process, and platform integration.

The Core 7 251E is built on Intel’s 10 nm process and uses the Bartlett Lake codename. It fits the Intel Socket 1700 and belongs to the Core 7 generation. The Core Ultra 7 265 uses the Arrow Lake architecture with the Arrow Lake-S codename, built on a 3 nm process by TSMC, and fits the Intel Socket 1851. It belongs to the Core Ultra Series 2 generation. The process node difference, 10 nm versus 3 nm, is significant for power efficiency and transistor density, though the database does not provide power consumption comparisons beyond the 65 W TDP shared by both.

The Core 7 251E has 24 cores and 32 threads, while the Core Ultra 7 265 has 20 cores and 20 threads. The Core 7 251E’s extra threads come from hyper-threading, whereas the Core Ultra 7 265 does not appear to use it, given the equal core and thread count. The Core 7 251E has a base clock of 2.10 GHz and a boost clock of 5.60 GHz. The Core Ultra 7 265 has a higher base clock of 2.40 GHz but a lower boost clock of 5.30 GHz.

Cache layouts differ. The Core 7 251E has 80 KB of L1 per core, 2 MB of L2 per core, and 36 MB of shared L3 cache. The Core Ultra 7 265 has 192 KB of L1 per core, 3 MB of L2 per core, and 30 MB of shared L3 cache. The Core Ultra 7 265 has more L1 and L2 per core, while the Core 7 251E has more total L3.

Memory support diverges. The Core 7 251E supports both DDR4 and DDR5 over a dual-channel bus with a bandwidth of 89.6 GB/s. The Core Ultra 7 265 supports only DDR5 over a dual-channel bus with a bandwidth of 102.4 GB/s. The Core Ultra 7 265 has higher memory bandwidth, but the Core 7 251E offers broader compatibility. ECC memory is supported on the Core 7 251E but not on the Core Ultra 7 265.

PCIe connectivity also differs. The Core 7 251E provides Gen 5 with 16 lanes from the CPU. The Core Ultra 7 265 provides Gen 5 with 20 lanes from the CPU.

Integrated graphics differ as well. The Core 7 251E uses UHD Graphics 770, while the Core Ultra 7 265 uses Arc Xe-LPG Graphics 32EU. The die size for the Core 7 251E is 257 mm², while the Core Ultra 7 265 is 243 mm². The Core Ultra 7 265 has 17,800 million transistors, while the Core 7 251E’s transistor count is not listed.

Both processors are active in production, have locked multipliers, and are intended for the desktop market. The Core 7 251E launched on January 12, 2025, while the Core Ultra 7 265 launched on January 6, 2025. The launch MSRP for the Core 7 251E is $384, and the launch MSRP for the Core Ultra 7 265 is $394.