Intel Core Ultra 5 250KF Plus vs Intel Core Ultra 7 265T Comparison

The Intel Core Ultra 5 250KF Plus and the Intel Core Ultra 7 265T are both desktop processors from Intel’s Core Ultra Series 2, sharing the same Arrow Lake architecture foundation, but they are configured for entirely different objectives. The 250KF Plus is a high-power, unlocked part with a 125W TDP, while the 265T is a low-power, locked part with a 35W TDP. The benchmark data shows a decisive performance advantage for the 250KF Plus across every single recorded test, with the 265T offering a vastly lower power envelope and integrated graphics. This analysis breaks down the recorded performance metrics, architectural differences, and practical implications of these two processors.

Head-to-Head Benchmarks

The recorded data shows a clean sweep for the Intel Core Ultra 5 250KF Plus, winning all 17 head-to-head benchmark comparisons. The magnitude of the victory varies significantly by workload, ranging from a modest single-thread advantage to a massive lead in memory-intensive tasks.

In the Cinebench suite, the 250KF Plus demonstrates a consistent and substantial lead. In Cinebench R23 multi-core, the 250KF Plus scores 42,718 against the 265T’s 31,558, a delta of 35.4%. This pattern repeats in R20 multi-core (17,941 vs 13,254, 35.4%) and R15 multi-core (4,305 vs 3,180, 35.4%). The single-core results tell a similar story, with the 250KF Plus leading by 35.2% in R15 (607 vs 449), 35.3% in R20 (2,532 vs 1,871), and 35.4% in R23 (6,030 vs 4,455). These consistent deltas indicate that the performance gap is structural, not workload-specific.

The Passmark suite reveals where the largest differences lie. The biggest single delta is in random string sorting, where the 250KF Plus scores 67,209 versus 44,400, a 51.4% advantage. This is followed closely by extended instructions (42,880 vs 28,609, 49.9%) and data compression (553,155 vs 370,158, 49.4%). These three tests suggest that the 250KF Plus has a significant advantage in memory bandwidth or cache efficiency. The data encryption test shows a 39.1% lead (41,292 vs 29,687), while find prime numbers shows 40.4% (452 vs 322).

The smallest recorded advantage for the 250KF Plus is in the Passmark single-thread test, where it scores 4,698 versus 4,338, a delta of only 8.3%. This is a notable finding, as it suggests that the architectural per-core efficiency of the 265T is much closer to the 250KF Plus than the multi-core tests would imply. The floating-point math test shows a 23.1% lead (159,824 vs 129,817), and integer math shows a 17.2% lead (123,030 vs 104,943). The Passmark multi-thread score is 50,146 versus 37,084, a 35.2% delta, and physics shows a 33.1% lead (3,183 vs 2,391).

The average benchmark score for the 250KF Plus is 66,159, placing it in the 93rd percentile of all CPUs. The 265T’s average is 47,697, placing it in the 90th percentile. The nearest rival for the 250KF Plus is the Intel Core 9 273PQE with a delta of 0.1%, and the AMD Ryzen 9 7950X3D at 0.4%. The 265T’s nearest rivals include the AMD Ryzen 9 PRO 5945 at 0.4% and the AMD Ryzen 9 7900X3D at -0.4%.

Where Each One Wins

Based strictly on the recorded data, the Intel Core Ultra 5 250KF Plus wins in every measurable performance category. There is no benchmark in the database where the 265T records a higher score. This means that for any task that relies on CPU compute, the 250KF Plus is the faster processor.

The 250KF Plus shows its largest advantages in tasks that stress memory subsystems and complex instruction sets. The 51.4% lead in random string sorting and 49.9% lead in extended instructions point to a significant edge in handling large, in-memory datasets and SIMD workloads. The 49.4% lead in data compression reinforces this pattern, suggesting the 250KF Plus can move and process data faster. The smaller but still substantial leads in integer math (17.2%) and floating-point math (23.1%) indicate that general arithmetic workloads are also noticeably faster.

The single-thread test is the one area where the two processors are closest. The 8.3% lead for the 250KF Plus is still a win, but it is far smaller than the multi-core deltas. This suggests that for lightly-threaded applications, the 265T is relatively competitive, likely due to the same 5.30 GHz boost clock shared by both processors. However, the 35.4% delta in Cinebench R23 single-core contradicts this interpretation, showing a much larger gap in that specific test.

The 265T’s only advantage in the data is its power consumption. With a 35W TDP versus the 125W TDP of the 250KF Plus, the 265T is designed for systems where heat output and energy draw are primary constraints. The data shows no scenario where this lower power translates into a performance win, but it does indicate a fundamentally different operating envelope.

The Verdict

The data is unambiguous: the Intel Core Ultra 5 250KF Plus is the faster processor in every single benchmark recorded. For users seeking maximum compute performance, the 250KF Plus is the clear choice. Its 35.4% lead in Cinebench R23 multi-core and 49.4% lead in data compression are decisive for rendering, content creation, and data processing workloads.

The Intel Core Ultra 7 265T offers no performance advantage in the recorded data, but it is a different class of product. Its 35W TDP makes it suitable for compact or passively cooled systems where the 125W TDP of the 250KF Plus would be impractical. The 265T also includes integrated graphics (Arc Xe-LPG Graphics 64EU), whereas the 250KF Plus has no integrated graphics (N/A). For a system that requires a discrete GPU, the 250KF Plus is necessary; for a system that must run without one, the 265T has that capability.

The 250KF Plus is an unlocked processor with a multiplier unlocked, while the 265T is locked. This means the 250KF Plus can be overclocked, potentially extending its already substantial lead. The 265T cannot be overclocked. The 250KF Plus also supports ECC memory, while the 265T does not, making the former more suitable for error-sensitive workstation tasks.

Picking between these two depends entirely on the system constraints. The data shows that if performance is the goal, the 250KF Plus is the only option. If the goal is a low-power system with integrated graphics, the 265T is the only option. There is no middle ground in the benchmark results.

FAQ

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

A: The Intel Core Ultra 5 250KF Plus scores 42,718, which is 35.4% higher than the Intel Core Ultra 7 265T’s score of 31,558.

Q: Is there any benchmark where the Core Ultra 7 265T wins?

A: No. The recorded data shows the Core Ultra 5 250KF Plus winning all 17 head-to-head benchmark comparisons, with the 265T recording zero wins.

Q: What is the largest performance difference between the two processors?

A: The largest delta is in Passmark random string sorting, where the 250KF Plus leads by 51.4% (67,209 vs 44,400). The extended instructions test shows a 49.9% lead, and data compression shows a 49.4% lead.

Q: How close are the two processors in single-thread performance?

A: In the Passmark single-thread test, the 250KF Plus leads by 8.3% (4,698 vs 4,338). This is the smallest recorded delta between the two. However, in Cinebench R23 single-core, the delta is 35.4% (6,030 vs 4,455).

Q: Do both processors have the same power requirements?

A: No. The Core Ultra 5 250KF Plus has a TDP of 125W, while the Core Ultra 7 265T has a TDP of 35W. This is a significant difference in thermal design power.

Q: Which processor includes integrated graphics?

A: The Intel Core Ultra 7 265T includes Arc Xe-LPG Graphics 64EU. The Intel Core Ultra 5 250KF Plus has no integrated graphics, listed as N/A.

Architecture Differences

Both processors share the same fundamental architecture, built on the Arrow Lake design and manufactured by TSMC on a 3 nm process node. Both have the same transistor count of 17,800 million and the same die size of 243 mm². The core configuration differs, with the 250KF Plus featuring 18 cores and 18 threads, while the 265T features 20 cores and 20 threads. Neither processor uses hyper-threading, as core and thread counts are identical for each.

The cache hierarchy is identical between the two. Both have 192 KB of L1 cache per core, 3 MB of L2 cache per core, and 30 MB of shared L3 cache. This is a notable point: the 265T has more cores but the same L3 cache, which could contribute to the 250KF Plus’s advantage in cache-sensitive workloads. The memory support is DDR5 for both, with dual-channel memory buses. However, the memory bandwidth differs: the 250KF Plus has a recorded bandwidth of 115.2 GB/s, while the 265T has 102.4 GB/s.

The base clock speeds are drastically different. The 250KF Plus has a base clock of 4.20 GHz, while the 265T has a base clock of only 1.50 GHz. Both share the same boost clock of 5.30 GHz. This low base clock on the 265T is a primary reason for its low 35W TDP, but it also means the processor spends more time at lower frequencies under load unless boost is sustained. The 250KF Plus starts at a much higher frequency, contributing to its performance lead.

The PCIe configuration is the same for both: Gen 5 with 20 lanes (CPU only). The socket is also the same, Intel Socket 1851. The 250KF Plus is from the "Arrow Lake Refresh" codename, while the 265T is from "Arrow Lake-S". Both are active production parts, with the 265T released on 2026-01-06 and the 250KF Plus on 2026-03-10. The 250KF Plus has an unlocked multiplier, while the 265T is locked. ECC memory support is present on the 250KF Plus but not on the 265T. The integrated graphics are the most significant feature split, with the 265T including Arc Xe-LPG Graphics 64EU and the 250KF Plus having none.