Intel Core 5 315 vs Intel Core Ultra 5 245T Comparison

Where Each One Wins

The benchmark record is unambiguous: the Intel Core Ultra 5 245T wins every single one of the 17 recorded head-to-head comparisons against the Intel Core 5 315. There are no contests where the Core 5 315 takes the lead, so the use-case split is entirely one-sided. The Core Ultra 5 245T dominates across every category measured, including single-threaded workloads, multi-threaded rendering, integer math, floating-point math, encryption, compression, and prime-number finding.

The largest gaps appear in computationally intensive tasks. The Core Ultra 5 245T is 65.4% ahead in the PassMark find prime numbers test, 64.3% ahead in integer math, and 60.9% ahead in floating-point math. These are workloads that scale with core count and raw execution resources, and the Core Ultra 5 245T uses its larger core configuration to full effect. For data encryption, the Core Ultra 5 245T leads by 53%, and for data compression it leads by 48.5%. The smallest advantage is in PassMark single-thread performance, where the Core Ultra 5 245T is only 7.9% ahead, indicating that the per-core architecture of the Core 5 315 is relatively close in lightly threaded scenarios.

In Cinebench tests, the Core Ultra 5 245T consistently holds a 50.5% advantage across R15, R20, and R23, in both single-core and multi-core runs. This suggests that the architectural efficiency of the Arrow Lake design translates into a broad, uniform performance lead rather than a narrow specialty. The Core 5 315 still delivers usable results, but it does not win any recorded workload category. The database percentile scores reflect this: the Core Ultra 5 245T sits at the 86th percentile of all CPUs, while the Core 5 315 sits at the 72nd percentile. The average benchmark score for the Core Ultra 5 245T is 38,194, roughly 110% higher than the Core 5 315's average of 18,188.

For users prioritizing power efficiency or mobility, the Core 5 315 has a lower thermal design point, but the recorded data does not include any power or efficiency benchmarks that would flip a single performance win in its favor. The conclusion from the data is straightforward: the Core Ultra 5 245T is the stronger performer in every measured category.

Architecture Differences

The two processors come from different Intel design lineages. The Core 5 315 uses the Wildcat Lake codename and is built on a 3 nm process at Intel's own foundry. It is a mobile segment part with 6 cores and 6 threads. The Core Ultra 5 245T belongs to the Arrow Lake family, specifically Arrow Lake-S, and it is also built on a 3 nm process, but the foundry is TSMC. It is a desktop segment part with 14 cores and 14 threads. Neither processor has an unlocked multiplier, so overclocking is not supported for either.

The core organization differs significantly. The Core 5 315 has a single type of core, 6 total, with no hyper-threading, resulting in 6 threads. The Core Ultra 5 245T has 14 physical cores and 14 threads, again without hyper-threading. The cache hierarchy also diverges. The Core 5 315 has 192 KB of L1 cache, 2.5 MB of L2 cache, and 6 MB of shared L3 cache. The Core Ultra 5 245T lists 192 KB of L1 per core and 3 MB of L2 per core, with 24 MB of shared L3 cache. The per-core L2 allocation on the Core Ultra 5 245T means the total L2 is substantially larger, and the shared L3 is four times the size of the Core 5 315's L3.

Memory support differs as well. The Core 5 315 supports both DDR5 and LPDDR5X memory, while the Core Ultra 5 245T supports only DDR5. The memory bus is single-channel on the Core 5 315 versus dual-channel on the Core Ultra 5 245T. Recorded memory bandwidth is 59.7 GB/s for the Core 5 315 and 102.4 GB/s for the Core Ultra 5 245T. ECC memory is not supported on the Core 5 315 but is supported on the Core Ultra 5 245T.

The integrated graphics differ by generation and configuration. The Core 5 315 uses Intel Xe3 Graphics with 2 Xe cores. The Core Ultra 5 245T uses Arc Xe-LPG Graphics with 64 execution units. PCIe support also varies: the Core 5 315 provides Gen 4 with 6 CPU lanes, while the Core Ultra 5 245T provides Gen 5 with 20 CPU lanes. The sockets are different, BGA 1516 for the Core 5 315 and Socket 1851 for the Core Ultra 5 245T. The Core Ultra 5 245T has a listed transistor count of 17,800 million and a die size of 243 mm², while the Core 5 315 does not have recorded transistor or die size data.

Release dates place the Core Ultra 5 245T earlier, with a launch in January 2025, while the Core 5 315 launched in April 2026. Both are listed as active production parts.

Head-to-Head Benchmarks

The recorded head-to-head results show a complete sweep. In Cinebench R15 multi-core, the Core Ultra 5 245T scores 2,641 against the Core 5 315's 1,308, a 50.5% advantage. The single-core R15 result is 372 versus 184, also a 50.5% gap. Cinebench R20 multi-core shows 11,007 versus 5,452, again 50.5% ahead, and R20 single-core is 1,553 versus 769, 50.5% ahead. Cinebench R23 multi-core delivers 26,208 versus 12,981, and R23 single-core delivers 3,699 versus 1,832, both with the same 50.5% delta.

The PassMark suite shows a wider spread of deltas. Data compression scores 283,812 for the Core Ultra 5 245T versus 146,143 for the Core 5 315, a 48.5% lead. Data encryption is 23,656 versus 11,119, a 53% lead. Extended instructions are 22,071 versus 13,143, a 40.5% lead. Find prime numbers is the most lopsided result: 324 versus 112, a 65.4% lead. Floating-point math is 108,499 versus 42,441, a 60.9% lead. Integer math is 88,676 versus 31,690, a 64.3% lead. Multithreaded performance is 30,833 versus 15,272, a 50.5% lead. Physics is 2,278 versus 1,163, a 48.9% lead. Random string sorting is 34,931 versus 17,551, a 49.8% lead. Single-thread performance is 4,367 versus 4,021, a 7.9% lead, the narrowest margin of any recorded test.

The pattern is consistent. For heavily parallel workloads, the Core Ultra 5 245T's extra cores and larger cache yield leads of roughly 50% to 65%. For single-threaded workloads, the lead shrinks to under 10%, suggesting that the two architectures have similar per-core efficiency but diverge sharply when more execution resources come into play.

Specification Differences

The two processors differ on nearly every recorded specification. The Core 5 315 has 6 cores and 6 threads, while the Core Ultra 5 245T has 14 cores and 14 threads. Base clocks are 1.50 GHz for the Core 5 315 and 2.20 GHz for the Core Ultra 5 245T. Boost clocks are 4.40 GHz and 5.10 GHz, respectively. Thermal design points are 15 W versus 65 W.

Cache configurations diverge: the Core 5 315 has 192 KB L1, 2.5 MB L2, and 6 MB shared L3, while the Core Ultra 5 245T has 192 KB L1 per core, 3 MB L2 per core, and 24 MB shared L3. Memory support is DDR5 and LPDDR5X for the Core 5 315 versus DDR5 only for the Core Ultra 5 245T. Memory bus width is single-channel versus dual-channel. Memory bandwidth is 59.7 GB/s versus 102.4 GB/s. ECC support is absent on the Core 5 315 and present on the Core Ultra 5 245T.

PCIe capabilities are Gen 4 with 6 lanes on the Core 5 315 versus Gen 5 with 20 lanes on the Core Ultra 5 245T. Integrated graphics are Intel Xe3 Graphics with 2 Xe cores versus Arc Xe-LPG Graphics with 64 execution units. Market segment is mobile versus desktop. Socket is BGA 1516 versus Socket 1851. The Core Ultra 5 245T also has a recorded transistor count of 17,800 million and a die size of 243 mm², while the Core 5 315 does not list those figures. The Core Ultra 5 245T launched in January 2025 with a launch MSRP of $270. The Core 5 315 launched in April 2026 with a launch MSRP of $340.

The process node is 3 nm for both, but the foundry is Intel for the Core 5 315 and TSMC for the Core Ultra 5 245T. Neither part has an unlocked multiplier. The Core 5 315 has part number SAEFC, and the Core Ultra 5 245T has part number SRVFF.

FAQ

Q: Which processor has more cores?

A: The Intel Core Ultra 5 245T has 14 cores and 14 threads. The Intel Core 5 315 has 6 cores and 6 threads.

Q: What is the single-thread performance difference?

A: In PassMark single-thread testing, the Core Ultra 5 245T scores 4,367 versus 4,021 for the Core 5 315, a 7.9% lead. Cinebench R23 single-core shows a larger gap: 3,699 versus 1,832, which is a 50.5% difference.

Q: Do both processors support ECC memory?

A: No. The Core Ultra 5 245T supports ECC memory, while the Core 5 315 does not.

Q: Which processor has higher memory bandwidth?

A: The Core Ultra 5 245T has a dual-channel memory bus with 102.4 GB/s bandwidth. The Core 5 315 has a single-channel bus with 59.7 GB/s bandwidth.

Q: Are both processors built on the same process node?

A: Yes, both use a 3 nm process. However, the Core 5 315 is manufactured by Intel, while the Core Ultra 5 245T is manufactured by TSMC.

Q: What is the average benchmark score for each?

A: The Core Ultra 5 245T has an average benchmark score of 38,194 and sits at the 86th percentile of all CPUs. The Core 5 315 has an average benchmark score of 18,188 and sits at the 72nd percentile.