Intel Core 5 315 vs Intel Core Ultra 7 265 Comparison
Intel Core 5 315
Core Ultra 7 265
PERFORMANCE BENCHMARKS
Analysis: Intel Core 5 315 vs Intel Core Ultra 7 265
Where Each One Wins
The benchmark split is unambiguous: the Intel Core Ultra 7 265 wins all 17 recorded head-to-head comparisons. The Intel Core 5 315 does not hold a single victory in any test category, including single-threaded workloads where its higher boost clock might suggest competitiveness. This is not a close contest; it is a complete sweep by the desktop-oriented part.
The largest margins appear in compute-heavy integer and floating-point workloads. The Core Ultra 7 265 leads by 76.5% in PassMark integer math and by 75.4% in floating-point math. These are the widest deltas in the entire benchmark set, indicating that the 20-core design scales aggressively when all cores are saturated. The Core 5 315, with only 6 cores and 6 threads, cannot match this parallel throughput.
The smallest gap is in single-threaded performance. The Core Ultra 7 265 still wins, but by 14.2% in both PassMark single-thread tests and by 13% in Cinebench R20 single-core. This suggests that while the Core 5 315 has a respectable single-core design, the Core Ultra 7 265's higher boost clock of 5.30 GHz versus 4.40 GHz provides a decisive edge even in lightly threaded tasks.
For mobile workloads, the Core 5 315 holds its own in terms of power envelope. Its 15W TDP is substantially lower than the Core Ultra 7 265's 65W, which positions it for thin-and-light systems. However, the performance data shows that any task requiring sustained multi-core execution will favor the desktop part. The Core 5 315's percentile rank of 72 versus the Core Ultra 7 265's 93 places them in different performance tiers entirely.
Architecture Differences
The two processors diverge fundamentally in their design targets. The Core 5 315 uses the Wildcat Lake codename and is built on a 3nm process node at Intel's own foundry. The Core Ultra 7 265 uses the Arrow Lake-S architecture, also on a 3nm node, but manufactured by TSMC. This foundry difference is notable for yield and process maturity, though the database records no direct performance impact from this factor alone.
Core counts tell the primary story. The Core 5 315 offers 6 cores and 6 threads, with no hyperthreading. The Core Ultra 7 265 offers 20 cores and 20 threads, also without hyperthreading but with a much larger physical core array. The cache hierarchy reflects this: the Core 5 315 has 192 KB of L1, 2.5 MB of L2, and 6 MB of shared L3. The Core Ultra 7 265 has 192 KB of L1 per core, 3 MB of L2 per core, and 30 MB of shared L3. The L3 cache difference alone, 30 MB versus 6 MB, explains much of the multi-core scaling advantage.
Memory architecture also separates them. The Core 5 315 supports both DDR5 and LPDDR5X with a single-channel memory bus and 59.7 GB/s bandwidth. The Core Ultra 7 265 supports DDR5 only but with a dual-channel bus and 102.4 GB/s bandwidth. The bandwidth gap, 102.4 GB/s versus 59.7 GB/s, directly impacts data-heavy workloads such as compression and encryption, where the Core Ultra 7 265 leads by over 72%.
PCIe connectivity differs as well. The Core 5 315 uses Gen 4 with 6 CPU lanes, while the Core Ultra 7 265 uses Gen 5 with 20 CPU lanes. This positions the Core Ultra 7 265 for discrete GPUs and high-speed storage, while the Core 5 315 suits integrated-only mobile designs. Integrated graphics also differ: the Core 5 315 uses Intel Xe3 Graphics with 2 Xe cores, while the Core Ultra 7 265 uses Arc Xe-LPG Graphics with 32 execution units.
Head-to-Head Benchmarks
The Cinebench R23 multi-core test delivers the most dramatic separation. The Core Ultra 7 265 scores 42,216 against the Core 5 315's 12,981, a 69.3% advantage. This is a 3.25x raw score difference, directly attributable to the 20-core versus 6-core configuration. The Cinebench R15 multi-core test shows a similar pattern: 4,255 versus 1,308, also a 69.3% delta.
Single-core Cinebench results narrow the gap but do not change the outcome. In Cinebench R23 single-core, the Core Ultra 7 265 scores 5,960 versus 1,832, a 69.3% lead. In Cinebench R20 single-core, the scores are 884 versus 769, a 13% lead. The R20 delta is the smallest in the entire Cinebench suite, suggesting that the Core 5 315's single-core efficiency is comparatively strong but still insufficient.
PassMark integer math shows the largest absolute disparity. The Core Ultra 7 265 scores 134,773 versus 31,690, a 76.5% lead. Floating-point math follows at 172,776 versus 42,441, a 75.4% lead. Data compression shows 522,983 versus 146,143, a 72.1% lead. Data encryption shows 40,456 versus 11,119, a 72.5% lead. Extended instructions show 41,478 versus 13,143, a 68.3% lead.
The PassMark single-thread test is the closest contest on record. The Core Ultra 7 265 scores 4,689 versus 4,021, a 14.2% lead. This is the only benchmark where the delta falls below 15%. Find prime numbers shows 418 versus 112, a 73.2% lead. Random string sorting shows 63,833 versus 17,551, a 72.5% lead. Physics shows 2,923 versus 1,163, a 60.2% lead, the smallest PassMark delta but still a decisive win.
Specification Differences
The two processors differ in nearly every spec field. The Core 5 315 has 6 cores and 6 threads; the Core Ultra 7 265 has 20 cores and 20 threads. Base clocks are 1.50 GHz versus 2.40 GHz. Boost clocks are 4.40 GHz versus 5.30 GHz. TDP is 15W versus 65W. Sockets are Intel BGA 1516 versus Intel Socket 1851. Codename is Wildcat Lake versus Arrow Lake-S.
The Core 5 315 lists no transistor count or die size, while the Core Ultra 7 265 records 17,800 million transistors on a 243 mm² die. Process node is 3 nm for both, but the foundries differ: Intel for the Core 5 315, TSMC for the Core Ultra 7 265. Cache differs per-level: L1 is 192 KB versus 192 KB per core, L2 is 2.5 MB versus 3 MB per core, and L3 is 6 MB shared versus 30 MB shared.
Memory support differs: the Core 5 315 supports DDR5 and LPDDR5X with single-channel bus and 59.7 GB/s bandwidth; the Core Ultra 7 265 supports DDR5 only with dual-channel bus and 102.4 GB/s bandwidth. PCIe is Gen 4 with 6 lanes versus Gen 5 with 20 lanes. Integrated graphics are Intel Xe3 Graphics (2 Xe) versus Arc Xe-LPG Graphics 32EU. Market segment is Mobile versus Desktop. Release dates are 2026-04-15 versus 2025-01-06. Launch MSRP is $340 for the Core 5 315 and $394 for the Core Ultra 7 265.
FAQ
Q: Which processor has more cores?
A: The Intel Core Ultra 7 265 has 20 cores and 20 threads, while the Intel Core 5 315 has 6 cores and 6 threads.
Q: What is the biggest benchmark margin between the two?
A: The largest delta is 76.5% in PassMark integer math, where the Core Ultra 7 265 scores 134,773 versus the Core 5 315's 31,690.
Q: Do the processors use the same process node?
A: Yes, both use a 3nm process node, but the Core 5 315 is made by Intel while the Core Ultra 7 265 is made by TSMC.
Q: Which processor has higher single-thread performance?
A: The Core Ultra 7 265 leads in all single-thread tests. In PassMark single-thread, it scores 4,689 versus 4,021, a 14.2% advantage.
Q: What memory bandwidth does each support?
A: The Core 5 315 supports 59.7 GB/s with a single-channel bus, while the Core Ultra 7 265 supports 102.4 GB/s with a dual-channel bus.
Q: How do their average benchmark scores compare?
A: The Core Ultra 7 265 has an average benchmark score of 64,640, while the Core 5 315 averages 18,188. The Core Ultra 7 265 sits at the 93rd percentile versus the Core 5 315's 72nd percentile.
The Verdict
The data directs a clear choice for any multi-threaded workload. The Intel Core Ultra 7 265 outperforms the Intel Core 5 315 in every recorded benchmark, with margins ranging from 13% to 76.5%. Its 20-core configuration, 30 MB of L3 cache, dual-channel memory, and 5.30 GHz boost clock create a performance profile that the 6-core Core 5 315 cannot approach. The average benchmark score of 64,640 versus 18,188 places them in entirely different performance classes.
The Core 5 315's only advantages are contextual. Its 15W TDP versus 65W makes it suitable for mobile platforms with limited cooling. Its support for LPDDR5X memory and single-channel bus targets low-power designs. Its launch MSRP of $340 is lower than the Core Ultra 7 265's $394, and its release date is later. But in raw performance, the database records zero wins for the Core 5 315 across all 17 head-to-head tests.
For users prioritizing compute throughput, rendering, compression, or encryption, the Core Ultra 7 265 is the only rational choice from this data. Its percentile rank of 93 versus 72 indicates it sits near the top of the CPU distribution, while the Core 5 315 sits in the upper-middle range. The Core 5 315 serves a different purpose: mobile efficiency with acceptable single-core performance. The Core Ultra 7 265 serves desktop performance with no compromises on core count, cache, or memory bandwidth.
The verdict is straightforward. The Core Ultra 7 265 wins every performance metric in the database. The Core 5 315 wins on power consumption and mobile form factor. Choose accordingly based on workload type, not on any performance expectation from the Core 5 315.