Intel Core 5 315 vs Intel Core Ultra 7 265H Comparison

Head-to-Head Benchmarks

The recorded data shows a decisive sweep. The Intel Core Ultra 7 265H wins all 17 head-to-head benchmark comparisons against the Intel Core 5 315. The largest margin appears in PassMark's find prime numbers test, where the Core Ultra 7 265H leads by 66.6%. The Core 5 315 scores 112, while the Core Ultra 7 265H posts 335. This particular workload, which stresses integer throughput and core scaling, highlights the structural gap between the two processors.

Multi-threaded workloads consistently show the Core Ultra 7 265H at roughly double the performance of the Core 5 315. In Cinebench R15 multicore, the Core Ultra 7 265H scores 2989 against 1308, a 56.2% deficit for the Core 5 315. Cinebench R20 multicore shows a similar pattern: 12131 versus 5452, a 55.1% gap. PassMark multithread mirrors this with 34027 versus 15272, again a 55.1% difference. The data indicates that the Core Ultra 7 265H delivers nearly 2.2 times the multi-threaded throughput of the Core 5 315 across these tests.

Single-thread performance tells a more nuanced story. The Core Ultra 7 265H still wins every single-core test, but the margins are much smaller. In Cinebench R23 singlecore, the Core Ultra 7 265H scores 2080 versus 1832, an 11.9% lead. PassMark single_thread shows 4334 versus 4021, a 7.2% advantage. Cinebench R15 singlecore shows 307 versus 184, a 40.1% gap. The R15 result is unusually large compared to the other single-thread tests, suggesting that the Core 5 315's low base clock of 1.50 GHz might constrain it in short, bursty workloads that do not allow enough time to reach its 4.40 GHz boost clock. The Core Ultra 7 265H, with a 2.20 GHz base and 5.30 GHz boost, has a higher floor for such tests.

Memory-sensitive workloads also favor the Core Ultra 7 265H substantially. PassMark data compression shows 334711 versus 146143, a 56.3% lead. PassMark data encryption shows 26005 versus 11119, a 57.2% gap. These tests benefit from the Core Ultra 7 265H's dual-channel memory bus and 102.4 GB/s bandwidth, compared to the Core 5 315's single-channel bus and 59.7 GB/s bandwidth. The bandwidth difference of roughly 1.7 times correlates closely with the observed performance deltas in these memory-heavy tasks.

Floating-point and integer math workloads show the Core Ultra 7 265H delivering between 61.1% and 62.9% higher scores. Specifically, PassMark floating point math shows 109123 versus 42441, a 61.1% gap, and integer math shows 85479 versus 31690, a 62.9% gap. PassMark extended instructions shows 26805 versus 13143, a 51% lead. PassMark physics shows 2497 versus 1163, a 53.4% gap. PassMark random string sorting shows 40742 versus 17551, a 56.9% lead. Across every workload category in the database, the Core Ultra 7 265H outperforms the Core 5 315 by a minimum of 7.2% (single-thread) and a maximum of 66.6% (prime number search).

Architecture Differences

The two processors come from different Intel families. The Core 5 315 belongs to the Wildcat Lake generation and uses the "Wildcat Lake" codename. The Core Ultra 7 265H belongs to the Core Ultra Series 2, uses the Arrow Lake architecture, and carries the "Arrow Lake-H" codename. Both use a 3 nm process node, but the foundries differ. Intel fabricates the Core 5 315 in-house, while TSMC fabricates the Core Ultra 7 265H.

Core configuration is a major differentiator. The Core 5 315 has 6 cores and 6 threads, with no hyperthreading. The Core Ultra 7 265H has 16 cores and 16 threads. The Core Ultra 7 265H's core count is 2.67 times higher, which explains much of its multi-threaded advantage. Clock speeds also differ significantly: the Core 5 315 has a 1.50 GHz base clock and 4.40 GHz boost, while the Core Ultra 7 265H has a 2.20 GHz base and 5.30 GHz boost. The Core Ultra 7 265H runs 0.70 GHz higher at base and 0.90 GHz higher at boost.

Cache hierarchy shows structural differences. The Core 5 315 has 192 KB L1 cache and 2.5 MB L2 cache, with 6 MB shared L3. The Core Ultra 7 265H lists 192 KB L1 per core and 3 MB L2 per core, with 24 MB shared L3. The L3 cache is 4 times larger on the Core Ultra 7 265H. The L2 description differs: the Core 5 315 lists a total L2 of 2.5 MB, while the Core Ultra 7 265H lists per-core L2 of 3 MB. Given 16 cores, the Core Ultra 7 265H's total L2 is substantially larger, though the database does not provide a total L2 figure for either processor.

Memory support is similar in type but not in width. Both support DDR5 and LPDDR5X. The Core 5 315 uses a single-channel memory bus with 59.7 GB/s bandwidth. The Core Ultra 7 265H uses a dual-channel bus with 102.4 GB/s bandwidth. ECC memory support also differs: the Core 5 315 does not support ECC, while the Core Ultra 7 265H does.

PCIe capabilities differ by generation and lane count. The Core 5 315 provides Gen 4 with 6 CPU lanes. The Core Ultra 7 265H provides Gen 5 with 8 CPU lanes. Integrated graphics also differ. The Core 5 315 includes Intel Xe3 Graphics with 2 Xe cores. The Core Ultra 7 265H includes Arc Graphics 140T. The database does not provide benchmark scores for the integrated GPUs, so direct comparison of graphics performance is not possible from this data.

Sockets differ: the Core 5 315 uses Intel BGA 1516, while the Core Ultra 7 265H uses Intel BGA 2049. Thermal design power also differs, with the Core 5 315 rated at 15 W and the Core Ultra 7 265H at 28 W. The Core Ultra 7 265H uses nearly double the power budget, consistent with its higher core count and clock speeds. Release dates place the Core Ultra 7 265H earlier, released on 2025-01-12, while the Core 5 315 arrived on 2026-04-15.

FAQ

Q: Which processor has better multi-threaded performance?

A: The Intel Core Ultra 7 265H wins every multi-threaded benchmark in the database. Its lead over the Core 5 315 ranges from 34.9% in Cinebench R23 multicore (19940 versus 12981) to 66.6% in PassMark find prime numbers (335 versus 112). Most multi-thread tests show a gap between 53% and 63%.

Q: Is the single-thread performance gap as large as the multi-thread gap?

A: No. The single-thread gap is much smaller. In Cinebench R23 singlecore, the Core Ultra 7 265H leads by 11.9% (2080 versus 1832). PassMark single_thread shows a 7.2% lead (4334 versus 4021). The only large single-thread margin is Cinebench R15 singlecore, where the Core Ultra 7 265H leads by 40.1% (307 versus 184).

Q: What explains the Core Ultra 7 265H's large lead in memory-intensive tests?

A: The Core Ultra 7 265H has a dual-channel memory bus with 102.4 GB/s bandwidth, while the Core 5 315 has a single-channel bus with 59.7 GB/s. In PassMark data compression, the Core Ultra 7 265H scores 334711 versus 146143, a 56.3% gap. Data encryption shows 26005 versus 11119, a 57.2% gap.

Q: How do the core counts compare?

A: The Core 5 315 has 6 cores and 6 threads. The Core Ultra 7 265H has 16 cores and 16 threads. Neither processor supports additional threads beyond its core count. The Core Ultra 7 265H's 16 cores are 2.67 times the Core 5 315's 6 cores.

Q: Which processor has more L3 cache?

A: The Core Ultra 7 265H has 24 MB shared L3 cache. The Core 5 315 has 6 MB shared L3 cache. The Core Ultra 7 265H's L3 is 4 times larger.

Q: Do both processors use the same manufacturing process?

A: Both use a 3 nm process node. However, the foundry differs. Intel fabricates the Core 5 315, while TSMC fabricates the Core Ultra 7 265H.

Specification Differences

The following fields differ between the two processors:

• Cores: 6 (Core 5 315) versus 16 (Core Ultra 7 265H)
• Threads: 6 (Core 5 315) versus 16 (Core Ultra 7 265H)
• Base Clock: 1.50 GHz (Core 5 315) versus 2.20 GHz (Core Ultra 7 265H)
• Boost Clock: 4.40 GHz (Core 5 315) versus 5.30 GHz (Core Ultra 7 265H)
• TDP: 15 W (Core 5 315) versus 28 W (Core Ultra 7 265H)
• Socket: Intel BGA 1516 (Core 5 315) versus Intel BGA 2049 (Core Ultra 7 265H)
• Architecture: Wildcat Lake (Core 5 315) versus Arrow Lake (Core Ultra 7 265H)
• Codename: Wildcat Lake (Core 5 315) versus Arrow Lake-H (Core Ultra 7 265H)
• Generation: Core 5 (Wildcat Lake) versus Ultra 7 (Arrow Lake-H)
• Foundry: Intel (Core 5 315) versus TSMC (Core Ultra 7 265H)
• L1 Cache: 192 KB (Core 5 315) versus 192 KB per core (Core Ultra 7 265H)
• L2 Cache: 2.5 MB (Core 5 315) versus 3 MB per core (Core Ultra 7 265H)
• L3 Cache: 6 MB shared (Core 5 315) versus 24 MB shared (Core Ultra 7 265H)
• Memory Bus: Single-channel (Core 5 315) versus Dual-channel (Core Ultra 7 265H)
• Memory Bandwidth: 59.7 GB/s (Core 5 315) versus 102.4 GB/s (Core Ultra 7 265H)
• ECC Memory: false (Core 5 315) versus true (Core Ultra 7 265H)
• PCIe: Gen 4, 6 Lanes (Core 5 315) versus Gen 5, 8 Lanes (Core Ultra 7 265H)
• Integrated Graphics: Intel Xe3 Graphics (2 Xe) (Core 5 315) versus Arc Graphics 140T (Core Ultra 7 265H)
• Release Date: 2026-04-15 (Core 5 315) versus 2025-01-12 (Core Ultra 7 265H)
• Launch MSRP: $340 (Core 5 315) versus not provided (Core Ultra 7 265H)
• Part Number: SAEFC (Core 5 315) versus SRQAQ (Core Ultra 7 265H)

The Verdict

The benchmark data shows a clear hierarchy. The Intel Core Ultra 7 265H outperforms the Intel Core 5 315 in every recorded test, with overall average benchmark scores of 41621 versus 18188. The Core Ultra 7 265H sits at the 88th percentile of all CPUs in the database, while the Core 5 315 sits at the 72nd percentile. The Core Ultra 7 265H's nearest rivals include the Intel Core i7-14650HX (0.1% higher average score) and the AMD Ryzen 9 5900X (0.6% lower). The Core 5 315's nearest rivals include the AMD EPYC 9274F (0% delta) and the Intel Core i7-9700 (0% delta).

For workloads that scale with core count, memory bandwidth, or sustained throughput, the Core Ultra 7 265H is the only rational choice from this data. Its 16 cores, dual-channel memory, 24 MB L3 cache, and higher clock speeds combine to deliver roughly double the multi-threaded performance across most tests. The 28 W TDP reflects the additional power required for that performance.

The Core 5 315's case rests on efficiency and platform simplicity. Its 15 W TDP is nearly half that of the Core Ultra 7 265H. Its single-channel memory bus and 6 PCIe Gen 4 lanes indicate a lower-cost platform design. However, the benchmark data does not show any workload where the Core 5 315 matches or exceeds the Core Ultra 7 265H. Even in single-threaded tasks, where the gap narrows to 7.2% in PassMark, the Core Ultra 7 265H retains the lead.

The release timeline matters for platform planning. The Core Ultra 7 265H arrived on 2025-01-12, making it the earlier product. The Core 5 315 arrived on 2026-04-15. The Core 5 315's $340 launch MSRP is recorded, while the Core Ultra 7 265H's launch MSRP is not in the database. The performance data indicates that the Core Ultra 7 265H justifies its position as the higher-tier part, with the Core 5 315 positioned as a lower-power, lower-performance alternative for the same mobile market segment.