Intel Core 5 223PE vs Intel Core Ultra 5 245K Comparison

Head-to-Head Benchmarks

The benchmark data splits these two desktop processors into distinct performance profiles. The Intel Core Ultra 5 245K dominates the head-to-head comparison with 13 wins across 17 recorded tests, while the Intel Core 5 223PE claims 4 victories. The overall average benchmark score favors the Core Ultra 5 245K at 54053 versus 40585 for the Core 5 223PE, a gap of roughly 33 percent.

The largest single-core win belongs to the Core 5 223PE in Cinebench R23 single-core, where it scores 3734 against 2132 for the Core Ultra 5 245K, a 75.1 percent advantage. Cinebench R15 single-core also goes to the Core 5 223PE with 376 versus 322, a 16.8 percent margin. These results indicate that the Core 5 223PE carries a significant single-thread performance advantage in certain legacy workloads.

The Core Ultra 5 245K answers with broad multi-core superiority. In Cinebench R15 multicore, it scores 3850 against 2666, a 30.8 percent lead. Cinebench R20 multicore shows 15368 versus 11111, a 27.7 percent edge. The PassMark multithread test records 43047 for the Core Ultra 5 245K versus 31124, also a 27.7 percent gap.

Data-intensive workloads show the Core Ultra 5 245K pulling further ahead. PassMark data compression scores 458817 versus 346623, a 24.5 percent lead. Data encryption delivers 33286 versus 18448, a 44.6 percent advantage. Extended instructions score 37617 versus 24672, a 34.4 percent gap. Floating point math shows 130678 versus 76468, a 41.5 percent margin. Prime number finding records 414 versus 159, the largest relative gap at 61.6 percent.

The Core 5 223PE takes PassMark integer math with 99819 versus 98524, a slim 1.3 percent margin. Cinebench R23 multicore also favors the Core 5 223PE with 26455 versus 25066, a 5.5 percent edge. These wins show that the Core 5 223PE is not uniformly slower in multi-threaded work, despite having fewer cores.

PassMark single-thread results favor the Core Ultra 5 245K with 4714 versus 4219, a 10.5 percent advantage. Physics simulation scores 3081 versus 2493, a 19.1 percent lead. Random string sorting records 55098 versus 35798, a 35 percent gap. The Core Ultra 5 245K also reaches the 91st percentile among all CPUs, while the Core 5 223PE sits at the 87th percentile.

Architecture Differences

The two processors come from different Intel product lines built on different manufacturing processes. The Core 5 223PE uses the Bartlett Lake architecture on a 10 nm process fabricated by Intel. The Core Ultra 5 245K uses the Arrow Lake architecture, specifically Arrow Lake-S, on a 3 nm process fabricated by TSMC. The Core Ultra 5 245K integrates 17,800 million transistors on a 243 mm² die; the Core 5 223PE has no recorded transistor count or die size in the database.

Core and thread counts differ substantially. The Core 5 223PE provides 8 cores and 16 threads, while the Core Ultra 5 245K provides 14 cores and 14 threads. The Core 5 223PE relies on simultaneous multithreading to reach 16 threads from 8 cores, whereas the Core Ultra 5 245K does not use multithreading, giving it one thread per core.

Clock speeds show a split. The Core 5 223PE has a base clock of 2.90 GHz and a boost clock of 5.20 GHz. The Core Ultra 5 245K has a base clock of 4.20 GHz and the same 5.20 GHz boost. The Core Ultra 5 245K runs at a higher idle and sustained base frequency, while both top out at the same maximum boost.

Cache hierarchies differ in per-core allocation but match in shared L3. The Core 5 223PE has 80 KB of L1 per core, 2 MB of L2 per core, and 24 MB of shared L3. The Core Ultra 5 245K has 192 KB of L1 per core, 3 MB of L2 per core, and the same 24 MB of shared L3. The Core Ultra 5 245K provides more L1 and L2 per core, which contributes to its single-thread performance in several tests.

Memory support separates the two platforms. The Core 5 223PE supports both DDR4 and DDR5 memory in dual-channel configuration with 89.6 GB/s bandwidth. The Core Ultra 5 245K supports only DDR5, also dual-channel, with 102.4 GB/s bandwidth. Both support ECC memory.

PCIe connectivity differs. The Core 5 223PE provides Gen 5 with 16 lanes from the CPU. The Core Ultra 5 245K provides Gen 5 with 20 lanes from the CPU. Integrated graphics also differ: the Core 5 223PE uses UHD Graphics 730, while the Core Ultra 5 245K uses Arc Xe-LPG Graphics 64EU.

Power and platform requirements diverge. The Core 5 223PE has a TDP of 65 watts and uses Intel Socket 1700. The Core Ultra 5 245K has a TDP of 125 watts and uses Intel Socket 1851. The Core Ultra 5 245K has an unlocked multiplier, while the Core 5 223PE does not. Release dates place the Core 5 223PE in the database as released in 2026 and the Core Ultra 5 245K as released in 2024.

Where Each One Wins

The Core Ultra 5 245K wins in most throughput-oriented workloads. Its PassMark multithread score of 43047 versus 31124 indicates stronger overall parallel processing capability. Data compression, encryption, extended instructions, floating point math, and prime number finding all favor the Core Ultra 5 245K by wide margins. Physics simulation and random string sorting also fall in its favor. The higher base clock of 4.20 GHz and the larger L1 and L2 caches per core support these results.

The Core 5 223PE wins in a smaller set of specific tasks. Cinebench R23 single-core shows a 75.1 percent advantage, indicating that the older architecture retains an edge in certain single-threaded rendering workloads. Cinebench R15 single-core also favors it by 16.8 percent. Cinebench R23 multicore goes to the Core 5 223PE with a 5.5 percent margin despite the Core Ultra 5 245K having more cores. PassMark integer math goes to the Core 5 223PE by 1.3 percent.

The split suggests that the Core 5 223PE performs best in workloads that favor its specific instruction handling and single-core execution paths, particularly older Cinebench versions. The Core Ultra 5 245K performs best in modern multi-threaded applications, data processing, and general compute tasks that scale across its 14 cores.

Socket compatibility matters for platform choice. The Core 5 223PE uses Intel Socket 1700, which supports DDR4 and DDR5 memory. The Core Ultra 5 245K uses Intel Socket 1851 and requires DDR5. The Core Ultra 5 245K also offers more PCIe lanes, 20 versus 16, both at Gen 5.

FAQ

Q: Which processor has the higher average benchmark score?

A: The Intel Core Ultra 5 245K has an average benchmark score of 54053, while the Intel Core 5 223PE scores 40585.

Q: How do the core counts compare?

A: The Core 5 223PE has 8 cores and 16 threads, while the Core Ultra 5 245K has 14 cores and 14 threads.

Q: Which CPU wins in Cinebench R23 single-core?

A: The Intel Core 5 223PE wins with a score of 3734 against 2132 for the Core Ultra 5 245K, a 75.1 percent advantage.

Q: Does the Core Ultra 5 245K support DDR4 memory?

A: No, the Core Ultra 5 245K supports only DDR5. The Core 5 223PE supports both DDR4 and DDR5.

Q: What are the TDP values for each processor?

A: The Core 5 223PE has a TDP of 65 watts, and the Core Ultra 5 245K has a TDP of 125 watts.

Q: Which processor has an unlocked multiplier?

A: The Intel Core Ultra 5 245K has an unlocked multiplier. The Core 5 223PE does not.

The Verdict

The data shows two processors with opposite strengths. The Intel Core Ultra 5 245K wins 13 of 17 head-to-head tests and holds a 33 percent higher average benchmark score. It leads in data compression, encryption, floating point math, physics, multithread performance, and single-thread PassMark results. It reaches the 91st percentile among all CPUs, offers 14 cores, a 4.20 GHz base clock, 102.4 GB/s memory bandwidth, and 20 PCIe Gen 5 lanes. It uses a 3 nm TSMC process, has 17,800 million transistors, and includes an unlocked multiplier.

The Intel Core 5 223PE wins 4 tests, including Cinebench R15 single-core, Cinebench R23 single-core, Cinebench R23 multicore, and PassMark integer math. Its 75.1 percent lead in Cinebench R23 single-core is the largest margin in either direction across the entire benchmark set. It draws 65 watts, fits Intel Socket 1700, supports DDR4 and DDR5, and carries an 87th percentile ranking.

The choice depends on workload priorities. The Core Ultra 5 245K is the stronger all-around processor for multi-threaded compute, data processing, and modern application performance. The Core 5 223PE offers a specific single-core advantage in Cinebench R23 and R15 workloads and a lower TDP for power-conscious builds. Both processors support ECC memory and share the same 5.20 GHz boost clock. The Core Ultra 5 245K is the higher-performing part in the majority of recorded benchmarks, while the Core 5 223PE holds distinct wins in a narrow set of tasks.