Intel Core 5 315 vs Intel Core Ultra 7 265HX Comparison
Intel Core 5 315
Core Ultra 7 265HX
PERFORMANCE BENCHMARKS
Analysis: Intel Core 5 315 vs Intel Core Ultra 7 265HX
Head-to-Head Benchmarks
The recorded benchmark data presents a decisive sweep for the Intel Core Ultra 7 265HX. Across all 17 head-to-head comparisons, the 265HX takes the win, with the Core 5 315 failing to claim a single test. The margins vary widely, from a narrow single-thread edge to a crushing three-fold gap in multi-threaded workloads.
The closest result appears in PassMark's single-thread test, where the Core Ultra 7 265HX scores 4500 against the Core 5 315's 4021, a delta of -10.6%. That difference is meaningful but far from the blowouts seen elsewhere. In Cinebench R23 single-core, the gap widens considerably: the 265HX posts 5737 versus 1832 for the 315, a -68.1% margin. The same -68.1% delta repeats across Cinebench R15 single-core (578 vs 184), R20 single-core (2409 vs 769), and R23 multi-core (40642 vs 12981). Cinebench R15 multi-core shows 4096 against 1308, also -68.1%, while R20 multi-core lands at 17069 versus 5452.
The most lopsided result in the entire dataset is PassMark integer math. The Core Ultra 7 265HX scores 126954, while the Core 5 315 manages 31690, a -75% difference. Floating-point math follows closely: 161605 versus 42441, a -73.7% gap. PassMark find prime numbers shows 406 against 112, a -72.4% delta. Data encryption delivers 39472 versus 11119, a -71.8% margin, and random string sorting comes in at 62458 versus 17551, a -71.9% gap. Data compression is similarly one-sided at 511817 versus 146143, a -71.4% difference.
PassMark extended instructions shows a -67.7% delta with scores of 40741 and 13143. Multithread performance lands at 47985 versus 15272, a -68.2% margin, while physics testing produces 2978 against 1163, a -60.9% gap. Even the smallest multi-threaded margin, physics at -60.9%, represents a massive performance chasm.
FAQ
Q: Which CPU wins more benchmarks in the head-to-head comparison?
A: The Intel Core Ultra 7 265HX wins all 17 recorded benchmark comparisons. The Core 5 315 records zero wins across Cinebench R15, R20, R23, and all PassMark tests.
Q: How large is the performance gap in multi-core workloads?
A: The 265HX leads by roughly 68% in Cinebench multi-core tests. R15 multi-core shows 4096 versus 1308, R20 shows 17069 versus 5452, and R23 shows 40642 versus 12981, each with a -68.1% delta.
Q: Is the single-thread gap similar to the multi-thread gap?
A: No. The smallest gap is PassMark single-thread at -10.6% (4500 vs 4021), but Cinebench single-core tests show a much larger -68.1% to -68.2% delta. The 265HX leads in both, but the PassMark test suggests a closer race in lightly threaded scenarios.
Q: What do the average benchmark scores indicate?
A: The Core Ultra 7 265HX has an average benchmark score of 63173, placing it in the 93rd percentile of all CPUs. The Core 5 315 has an average score of 18188, placing it in the 72nd percentile.
Q: How does the Core 5 315 compare to its nearest rivals?
A: The database shows the Core 5 315 sits within 0.1% of the AMD EPYC 9274F (18189) and Intel Core i7-9700 (18180), and 0.1% behind the Intel Core i7-1365U (18177) and AMD Ryzen 7 5700U (18176).
Q: How does the Core Ultra 7 265HX compare to its nearest rivals?
A: It is 0.1% ahead of the Intel Core i7-13790F (63080), 0.2% behind the AMD Ryzen AI 7 450G (63331), 0.5% ahead of the AMD Ryzen AI Embedded P185 (62839), and 0.7% ahead of the Intel Core Ultra 7 255HX (62738).
Where Each One Wins
The Intel Core Ultra 7 265HX dominates every measured workload category. Cinebench results across R15, R20, and R23 confirm superiority in both single-core and multi-core rendering tasks. PassMark tests covering integer math, floating-point math, data compression, encryption, extended instructions, prime number finding, random string sorting, physics, multithread, and single-thread all favor the 265HX.
The Core 5 315 has no benchmark wins in the recorded data. Its closest performance comes in PassMark single-thread, where it trails by just 10.6%, a margin that suggests it can remain competitive in certain lightly threaded applications despite the overall deficit. In every other test, the gap exceeds 60%, making the 315 unsuitable for workloads where the 265HX is available.
For users prioritizing raw compute throughput, the 265HX is the only choice supported by the data. The 315's performance profile aligns with lower-end mobile use cases, but the benchmark results do not identify any specific task where it outperforms the 265HX.
Specification Differences
The two processors differ substantially in core configuration. The Core 5 315 has 6 cores and 6 threads, while the Core Ultra 7 265HX has 20 cores and 20 threads. Base clocks differ as well: the 315 runs at 1.50 GHz, while the 265HX runs at 2.60 GHz. Boost clocks are 4.40 GHz for the 315 and 5.30 GHz for the 265HX.
Thermal design power differs by a wide margin. The 315 has a TDP of 15 watts, while the 265HX has a TDP of 55 watts. Sockets are incompatible: the 315 uses Intel BGA 1516, and the 265HX uses Intel BGA 2114.
Cache configurations also diverge. The 315 has 192 KB of L1 cache, 2.5 MB of L2 cache, and 6 MB of shared L3 cache. The 265HX has 192 KB of L1 cache per core, 3 MB of L2 cache per core, and 30 MB of shared L3 cache.
Memory support shows the 315 accepting DDR5 and LPDDR5X with a single-channel bus and 59.7 GB/s bandwidth. The 265HX supports DDR5 with a dual-channel bus and 102.4 GB/s bandwidth. Neither supports ECC memory.
PCIe capabilities differ as well: the 315 offers Gen 4 with 6 CPU-only lanes, while the 265HX offers Gen 5 with 20 CPU-only lanes. Integrated graphics differ, with the 315 using Intel Xe3 Graphics (2 Xe) and the 265HX using Arc Xe-LPG Graphics 64EU.
The 265HX has an unlocked multiplier, while the 315 does not. The 315 has a launch MSRP of $340, while the 265HX has no recorded launch MSRP. Release dates place the 315 at April 2026 and the 265HX at January 2025.
Architecture Differences
The Core 5 315 is built on the Wildcat Lake codename within the Core 5 generation, while the Core Ultra 7 265HX uses the Arrow Lake-HX codename within the Core Ultra Series 2 generation. Both use a 3 nm process node, but the foundries differ: the 315 is fabricated by Intel, while the 265HX is fabricated by TSMC.
The 265HX carries a transistor count of 17,800 million on a 243 mm² die. The 315 has no recorded transistor count or die size in the database.
Cache organization reflects architectural choices. The 315 uses a shared 6 MB L3 pool with 2.5 MB of L2, while the 265HX scales to 30 MB of shared L3 with 3 MB of L2 per core. The per-core L2 allocation on the 265HX suggests a design tuned for high-throughput multi-core execution, consistent with its 20-core configuration.
The 265HX also includes a broader feature set on the memory and I/O side. Its dual-channel memory bus and Gen 5 PCIe support with 20 lanes provide substantially more bandwidth headroom than the 315's single-channel bus and Gen 4, 6-lane configuration. The integrated graphics differ in architecture, with the 315 using Xe3 and the 265HX using Arc Xe-LPG.
The production status for both is active, and both target the mobile market segment. The 265HX's unlocked multiplier and larger core count position it as a high-end mobile part, while the 315's lower TDP and smaller core count align with efficiency-focused designs. The benchmark data confirms that architectural differences translate directly into the observed performance spread.