Intel Core 5 223PTE vs Intel Core Ultra 7 155UL Comparison

Head-to-Head Benchmarks

The recorded data for this comparison contains no benchmark scores, no win counts, and no average performance figures. Both processors have an empty benchmark result set in the database, and the head-to-head table lists no entries. The percentile versus all CPUs is identical at 50 for each part. This means the quantitative performance picture is incomplete; without measured scores, no direct speed comparison can be drawn from the database. Any statement about which CPU is faster in a specific workload would be speculation, not analysis of recorded data.

What can be compared directly are the structural attributes that influence performance potential. The Intel Core 5 223PTE carries 8 cores and 16 threads, while the Intel Core Ultra 7 155UL carries 12 cores and 14 threads. The Core Ultra 7 has 50% more physical cores, but the Core 5 has more threads. The Core 5's boost clock reaches 5.40 GHz, which is 0.60 GHz higher than the Core Ultra 7's 4.80 GHz boost. The Core 5 also has a higher base clock at 2.30 GHz versus 1.70 GHz. In single-threaded or lightly threaded tasks, the higher boost ceiling of the Core 5 gives it an advantage on paper. In heavily parallel workloads that scale with core count, the Core Ultra 7's extra four cores provide a theoretical edge, though thread count works against it.

The thermal design power figures differ significantly. The Core 5 223PTE is rated at 45 W, while the Core Ultra 7 155UL is rated at 15 W. This is a 30 W difference. The Core Ultra 7 consumes far less power under load, which matters for compact systems and sustained workloads. The Core 5's higher power envelope suggests it can sustain higher clocks for longer, but without thermal throttling data in the database, this remains an inference from the TDP rating.

Cache allocation differs as well. The Core 5 223PTE has an L3 cache of 24 MB shared, while the Core Ultra 7 155UL has 12 MB shared, half the amount. The Core Ultra 7 has a larger L1 cache per core at 112 KB versus 80 KB on the Core 5. L2 cache is identical at 2 MB per core. The larger L3 on the Core 5 benefits workloads that reuse data across cores, while the larger L1 on the Core Ultra 7 helps per-core latency-sensitive operations.

Memory bandwidth is identical at 89.6 GB/s for both, with dual-channel memory buses. The Core 5 supports DDR4 and DDR5, while the Core Ultra 7 supports DDR5 only, with the note that it depends on the motherboard. The Core 5 supports ECC memory, the Core Ultra 7 does not. PCIe connectivity differs: the Core 5 provides Gen 5 with 16 lanes from the CPU, the Core Ultra 7 provides Gen 4 with 8 lanes. This gives the Core 5 a substantial interface advantage for GPUs and NVMe storage.

Where Each One Wins

Based solely on the recorded specifications, the Intel Core 5 223PTE wins in scenarios that favor high clock speeds and larger shared cache. Its 5.40 GHz boost clock is the highest figure in this comparison. Applications with light thread counts, such as older games, legacy software, or single-threaded productivity tools, will see the benefit of that clock advantage. The 24 MB L3 cache also helps when data sets fit into that shared pool, reducing memory traffic. The Core 5's support for DDR4 memory gives it flexibility with existing platforms, and its ECC support makes it viable for error-sensitive computing, such as file servers or workstation builds that require data integrity. The PCIe Gen 5 interface with 16 lanes allows high-bandwidth expansion, which matters for modern graphics cards and fast storage arrays.

The Intel Core Ultra 7 155UL wins in power-constrained environments. Its 15 W TDP is one-third of the Core 5's 45 W rating. Systems with limited cooling, small form factor cases, or fanless designs will favor the lower power draw. The 12 physical cores provide more parallelism for multi-threaded workloads like video encoding, compilation, or rendering, assuming the software can use them effectively. The Arc Xe-LPG 64EU integrated graphics is a more capable iGPU than the UHD Graphics 770 on the Core 5, based on the product positioning in the database. The Core Ultra 7's newer 7 nm process node also suggests better power efficiency per transistor, though the database does not provide transistor counts or die sizes to confirm this. The smaller L3 cache at 12 MB is a drawback, but the larger L1 cache per core helps with certain latency-sensitive patterns.

The Core Ultra 7 also wins on platform modernity with Intel Socket 1851 and DDR5-only memory support. This pairs with a newer generation (Ultra 7, Meteor Lake-PS) compared to the Core 5's Bartlett Lake generation. The Core Ultra 7's release date of 2024-04-07 predates the Core 5's 2026-03-08, so the Core 5 is the newer product in the database, but the Core Ultra 7's architecture is more advanced in process node.

FAQ

Q: Which CPU has more cores and threads?

A: The Intel Core Ultra 7 155UL has 12 cores and 14 threads. The Intel Core 5 223PTE has 8 cores and 16 threads. The Core Ultra 7 has more physical cores, but the Core 5 has more threads.

Q: What are the boost clock differences?

A: The Intel Core 5 223PTE boosts to 5.40 GHz. The Intel Core Ultra 7 155UL boosts to 4.80 GHz. The Core 5 has a 0.60 GHz higher boost clock.

Q: Do both CPUs support the same memory?

A: No. The Intel Core 5 223PTE supports DDR4 and DDR5. The Intel Core Ultra 7 155UL supports DDR5 only, and the database notes it depends on the motherboard. Both have dual-channel memory buses and identical memory bandwidth of 89.6 GB/s.

Q: Is ECC memory supported?

A: The Intel Core 5 223PTE supports ECC memory. The Intel Core Ultra 7 155UL does not support ECC memory.

Q: What are the TDP ratings?

A: The Intel Core 5 223PTE has a TDP of 45 W. The Intel Core Ultra 7 155UL has a TDP of 15 W.

Q: Which socket does each use?

A: The Intel Core 5 223PTE uses Intel Socket 1700. The Intel Core Ultra 7 155UL uses Intel Socket 1851.

Specification Differences

The two processors differ in several core specification fields. The Intel Core 5 223PTE has 8 cores and 16 threads, a base clock of 2.30 GHz, a boost clock of 5.40 GHz, and a TDP of 45 W. The Intel Core Ultra 7 155UL has 12 cores and 14 threads, a base clock of 1.70 GHz, a boost clock of 4.80 GHz, and a TDP of 15 W.

The L1 cache per core is 80 KB on the Core 5 and 112 KB on the Core Ultra 7. L2 cache per core is 2 MB on both. L3 cache is 24 MB shared on the Core 5 and 12 MB shared on the Core Ultra 7.

Memory support differs: the Core 5 accepts DDR4 and DDR5, the Core Ultra 7 accepts DDR5 only. Memory bandwidth is the same at 89.6 GB/s. The Core 5 has ECC memory support, the Core Ultra 7 does not. PCIe capability differs: the Core 5 has Gen 5 with 16 lanes from the CPU, the Core Ultra 7 has Gen 4 with 8 lanes.

Integrated graphics differ: the Core 5 uses UHD Graphics 770, the Core Ultra 7 uses Arc Xe-LPG 64EU. The sockets differ: Intel Socket 1700 for the Core 5, Intel Socket 1851 for the Core Ultra 7. The launch MSRP for the Core 5 is $232. The launch MSRP for the Core Ultra 7 is $426.

The release dates differ: the Core 5 released on 2026-03-08, the Core Ultra 7 released on 2024-04-07. Both have locked multipliers and active production status. Part numbers are SA4QL for the Core 5 and SRN97 for the Core Ultra 7.

Architecture Differences

The architectural split is clear from the database fields. The Intel Core 5 223PTE is built on the Bartlett Lake codename, part of the Core 5 generation, fabricated on a 10 nm process node at Intel's foundry. The Intel Core Ultra 7 155UL uses the Meteor Lake architecture, specifically the Meteor Lake-PS codename, part of the Core Ultra Series 1 generation, fabricated on a 7 nm process node at Intel's foundry. The 7 nm node is smaller than the 10 nm node, which typically allows higher transistor density and better power efficiency, though the database provides no transistor counts or die sizes to quantify this.

The core configurations reflect different design philosophies. The Core 5 uses 8 cores and 16 threads, indicating hyper-threading support. The Core Ultra 7 uses 12 cores and 14 threads, which suggests a mix of performance and efficiency cores without full thread doubling on all cores. The Core Ultra 7's 12-core count with only 14 threads points to a hybrid architecture where some cores lack hyper-threading. The Core 5's 8 cores with 16 threads indicate a more traditional symmetric design.

Cache architecture differs in capacity and allocation. The Core 5 has a larger 24 MB L3 cache, which is shared across all cores. The Core Ultra 7 has a smaller 12 MB L3 cache but a larger 112 KB L1 per core. The L2 cache is the same at 2 MB per core. The larger L3 on the Core 5 suits data-heavy workloads with high reuse, while the larger L1 on the Core Ultra 7 helps per-core performance in latency-critical paths.

Feature support diverges. The Core 5 supports ECC memory, which the Core Ultra 7 does not. The Core 5 supports DDR4 and DDR5 memory; the Core Ultra 7 supports DDR5 only. The Core 5 provides PCIe Gen 5 with 16 CPU lanes; the Core Ultra 7 provides PCIe Gen 4 with 8 CPU lanes. The integrated graphics differ: UHD Graphics 770 on the Core 5 versus Arc Xe-LPG 64EU on the Core Ultra 7. The Arc solution is positioned as a more advanced iGPU in the database, while the UHD Graphics 770 is a conventional Intel die.

The platform generation differs. The Core 5 uses Intel Socket 1700, which is associated with older Intel platforms. The Core Ultra 7 uses Intel Socket 1851, which is a newer socket. The Core Ultra 7's release date of 2024-04-07 is earlier than the Core 5's 2026-03-08, so the Core 5 is the newer product despite using an older process node and socket.

The Verdict

The data shows two CPUs with opposite strengths. The Intel Core 5 223PTE is a high-clock, high-power part with a larger shared cache, ECC support, DDR4 compatibility, and PCIe Gen 5 connectivity. It suits builders who need raw single-thread performance, memory flexibility, and error-correcting memory for reliability-focused workloads. Its 45 W TDP means it requires adequate cooling, but the 5.40 GHz boost clock provides the highest clock speed in this comparison.

The Intel Core Ultra 7 155UL is a low-power, high-core-count part with a smaller process node and a more advanced integrated GPU. Its 15 W TDP makes it ideal for compact or passively cooled systems where power draw is a primary constraint. The 12 physical cores provide more parallel throughput for multi-threaded tasks, but the lower thread count of 14 limits some heavily threaded workloads. The Arc Xe-LPG 64EU iGPU is a stronger integrated graphics solution than UHD Graphics 770, which matters for systems without a discrete GPU. The lack of ECC support and the DDR5-only memory requirement narrow its use cases.

The choice between the two depends on the workload profile. For a desktop system that prioritizes clock speed, large cache, ECC reliability, and PCIe Gen 5 expansion, the Core 5 223PTE is the better fit. For a low-power system that needs many cores, a modern process node, and a capable iGPU, the Core Ultra 7 155UL is the better fit. The Core 5 has a lower launch MSRP at $232, while the Core Ultra 7 has a higher launch MSRP at $426. The Core Ultra 7's higher price is paired with a newer architecture and lower power consumption, but the Core 5 offers more threads, a higher boost clock, and twice the L3 cache.

Without benchmark scores, the database cannot resolve the performance question empirically. The specification sheets provide a clear directional picture: the Core 5 wins on clocks, cache, memory flexibility, and PCIe bandwidth; the Core Ultra 7 wins on core count, power efficiency, process node, and integrated graphics. Users who value the former set of traits should select the Core 5 223PTE. Users who value the latter set should select the Core Ultra 7 155UL. The 30 W TDP difference is the most consequential gap for system design, as it dictates cooling and power delivery requirements. The socket difference also locks each CPU to its own platform, so the motherboard choice will often decide the matter.