Intel Core 5 315 vs Intel Core Ultra 7 256V Comparison

Intel Core 5 315 and Intel Core Ultra 7 256V are both active mobile processors built on a 3 nm process, but they are engineered for different performance profiles. The benchmark data shows a clear split: the Core Ultra 7 256V dominates in nearly every recorded workload, winning 16 of 17 head-to-head tests, while the Core 5 315 secures a single, but substantial, victory in Cinebench R23 multi-core. The Core Ultra 7 256V delivers higher average benchmark scores, a higher percentile ranking, and a broader performance margin across single-thread, multi-thread, and specialized instruction tests.

Where Each One Wins

The Intel Core Ultra 7 256V is the performance leader across almost the entire benchmark suite. Its wins span Cinebench R15, R20, and R23 single-core tests, Cinebench R15 and R20 multi-core tests, and all nine PassMark workloads recorded in the database. The largest advantage appears in PassMark find prime numbers, where the Core Ultra 7 256V scores 192 against 112, a 41.7% lead. PassMark floating point math shows a 27.5% advantage (58576 versus 42441), and PassMark integer math is 26.9% ahead (43358 versus 31690). These results indicate the Core Ultra 7 256V is better suited for math-heavy, encryption, compression, and general productivity tasks.

The Intel Core 5 315 wins only Cinebench R23 multi-core, scoring 12981 against 10399, a 24.8% margin. This single result suggests that in a specific long-duration multi-core render workload, the Core 5 315 can outperform the Core Ultra 7 256V despite its lower core count and thread count. However, this win stands alone against a large body of Core Ultra 7 256V victories. The Core Ultra 7 256V also leads in PassMark multithread (19530 versus 15272, 21.8% ahead), confirming that its overall multi-threaded performance is stronger, with the R23 result being an outlier rather than a trend.

Architecture Differences

The two processors share a 3 nm process node but come from different foundries and microarchitectures. The Intel Core 5 315 uses the Wildcat Lake codename and is manufactured by Intel, while the Intel Core Ultra 7 256V is part of the Core Ultra Series 2, uses the Lunar Lake architecture, and is manufactured by TSMC. The Core 5 315 has 6 cores and 6 threads, while the Core Ultra 7 256V has 8 cores and 8 threads. Neither processor supports simultaneous multithreading, so thread counts equal core counts.

Cache configurations differ significantly. 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 7 256V lists 192 KB per core for L1, 2.5 MB per core for L2, and 12 MB of shared L3 cache. The Core Ultra 7 256V therefore provides twice the shared L3 capacity (12 MB versus 6 MB) and a per-core L2 allocation that scales with its 8 cores. Memory support also diverges: the Core 5 315 uses DDR5 and LPDDR5X with a single-channel memory bus and a recorded bandwidth of 59.7 GB/s, whereas the Core Ultra 7 256V uses a dual-channel memory bus, with its memory support listed as dependent on the motherboard. The Core Ultra 7 256V also supports PCIe Gen 5 with 4 CPU lanes, while the Core 5 315 supports PCIe Gen 4 with 6 CPU lanes. Integrated graphics differ as well, with the Core 5 315 featuring Intel Xe3 Graphics with 2 Xe cores and the Core Ultra 7 256V featuring Arc 140V. Both processors are mobile parts, lack an unlocked multiplier, and do not support ECC memory.

FAQ

Q: Which processor has the higher clock speed?

A: The Intel Core Ultra 7 256V has a base clock of 2.20 GHz and a boost clock of 4.80 GHz, compared to the Intel Core 5 315's base clock of 1.50 GHz and boost clock of 4.40 GHz.

Q: How do the two processors compare in single-threaded performance?

A: The Intel Core Ultra 7 256V leads in every single-thread test. In Cinebench R23 single-core, it scores 1877.5 versus 1832, a 2.4% advantage. In PassMark single thread, the margin is minimal, 4029 versus 4021, a 0.2% lead.

Q: Is the Intel Core 5 315 better in any multi-core benchmark?

A: Yes, the Intel Core 5 315 wins Cinebench R23 multi-core with a score of 12981 against the Core Ultra 7 256V's 10399, a 24.8% advantage. However, the Core Ultra 7 256V wins Cinebench R15 multi-core (1583.5 versus 1308, 17.4% ahead), Cinebench R20 multi-core (6958 versus 5452, 21.6% ahead), and PassMark multithread (19530 versus 15272, 21.8% ahead).

Q: What are the core and thread counts?

A: The Intel Core 5 315 has 6 cores and 6 threads. The Intel Core Ultra 7 256V has 8 cores and 8 threads. Neither processor uses Hyper-Threading or simultaneous multithreading.

Q: How do the integrated graphics compare?

A: The Intel Core 5 315 uses Intel Xe3 Graphics with 2 Xe cores. The Intel Core Ultra 7 256V uses Arc 140V. The database records no benchmark scores for either integrated GPU, so no performance comparison is possible from the recorded data.

Q: Which processor has the higher average benchmark score?

A: The Intel Core Ultra 7 256V has an average benchmark score of 21112, compared to 18188 for the Intel Core 5 315. The Core Ultra 7 256V also ranks in the 75th percentile of all CPUs, while the Core 5 315 ranks in the 72nd percentile.

Specification Differences

The following specifications differ between the two processors. The Intel Core 5 315 has 6 cores, while the Intel Core Ultra 7 256V has 8 cores. Thread counts follow the same pattern: 6 threads versus 8 threads. Base clocks are 1.50 GHz for the Core 5 315 and 2.20 GHz for the Core Ultra 7 256V. Boost clocks are 4.40 GHz and 4.80 GHz respectively. TDP is 15 W for the Core 5 315 and 17 W for the Core Ultra 7 256V. Sockets differ: Intel BGA 1516 for the Core 5 315 and Intel BGA 2833 for the Core Ultra 7 256V. The Core 5 315 uses the Wildcat Lake codename, while the Core Ultra 7 256V uses Lunar Lake. The foundries differ, with Intel producing the Core 5 315 and TSMC producing the Core Ultra 7 256V. L1 cache is listed as 192 KB total for the Core 5 315 and 192 KB per core for the Core Ultra 7 256V. L2 cache is 2.5 MB total for the Core 5 315 and 2.5 MB per core for the Core Ultra 7 256V. L3 cache is 6 MB shared for the Core 5 315 and 12 MB shared for the Core Ultra 7 256V. Memory support for the Core 5 315 is DDR5 and LPDDR5X, while the Core Ultra 7 256V's support depends on the motherboard. Memory buses are single-channel for the Core 5 315 and dual-channel for the Core Ultra 7 256V. Memory bandwidth is recorded only for the Core 5 315 at 59.7 GB/s. PCIe support is Gen 4 with 6 CPU lanes for the Core 5 315 and Gen 5 with 4 CPU lanes for the Core Ultra 7 256V. Integrated graphics are Intel Xe3 Graphics (2 Xe) for the Core 5 315 and Arc 140V for the Core Ultra 7 256V. Release dates are April 2026 for the Core 5 315 and September 2024 for the Core Ultra 7 256V. The Core 5 315 has a launch MSRP of $340, while the Core Ultra 7 256V has no recorded launch MSRP.

Head-to-Head Benchmarks

The head-to-head data is heavily weighted toward the Intel Core Ultra 7 256V, which wins 16 of 17 comparisons. In Cinebench R15 multi-core, the Core Ultra 7 256V scores 1583.5 against 1308, a 17.4% lead. In Cinebench R15 single-core, the margin is much larger: 285.5 versus 184, a 35.6% advantage. Cinebench R20 multi-core shows the Core Ultra 7 256V ahead by 21.6% (6958 versus 5452), and Cinebench R20 single-core shows a 21.7% lead (982 versus 769). Cinebench R23 single-core is close, with the Core Ultra 7 256V at 1877.5 and the Core 5 315 at 1832, a 2.4% difference. The one Core 5 315 win, Cinebench R23 multi-core, sees the Core 5 315 at 12981 against 10399, a 24.8% margin.

PassMark results follow the same pattern. Data compression favors the Core Ultra 7 256V, 184985 versus 146143, a 21% lead. Data encryption shows a 20.6% advantage (13998 versus 11119). Extended instructions are 16% ahead (15643 versus 13143). Find prime numbers delivers the largest relative margin, 192 versus 112, a 41.7% lead. Floating point math is 27.5% ahead (58576 versus 42441), and integer math is 26.9% ahead (43358 versus 31690). PassMark multithread shows a 21.8% lead (19530 versus 15272). Physics is 27.1% ahead (1595 versus 1163). Random string sorting is 21.9% ahead (22481 versus 17551). PassMark single thread is nearly identical, with the Core Ultra 7 256V at 4029 and the Core 5 315 at 4021, a 0.2% margin.

The Verdict

The benchmark data indicates that the Intel Core Ultra 7 256V is the stronger processor for nearly all workloads. Its 8 cores, 8 threads, higher base and boost clocks, dual-channel memory bus, and larger shared L3 cache contribute to wins in 16 of 17 head-to-head tests. The processor leads in single-core performance, multi-core performance outside of Cinebench R23, and every PassMark workload recorded. Its average benchmark score of 21112 and 75th percentile ranking place it ahead of the Core 5 315's 18188 average and 72nd percentile ranking. The Core Ultra 7 256V also sits among rivals like the AMD Ryzen 5 7530U and Intel Core Ultra 7 155U, with average scores within 0.3% of its own.

The Intel Core 5 315 is the choice only for scenarios where Cinebench R23 multi-core performance is the primary consideration, as it holds a 24.8% advantage there. Otherwise, the data consistently favors the Core Ultra 7 256V. The Core 5 315's single win does not offset the Core Ultra 7 256V's broader dominance across render, math, encryption, compression, and multithread tests. The Core Ultra 7 256V is the recommended pick from the recorded benchmark data for general mobile computing, productivity, and compute-heavy tasks.