Intel Core i3-1315UE vs Intel Core i5-8269U Comparison

Head-to-Head Benchmarks

The benchmark data presents an unusually consistent picture: the Intel Core i5-8269U wins every single head-to-head comparison, yet the margins are remarkably thin. Across six Cinebench tests spanning three different versions (R15, R20, and R23), the i5-8269U edges ahead in every instance, with delta percentages ranging from 0.0% to 0.6%. This is not a dominant victory; it is a series of narrow squeezes.

Looking at the multicore results, the pattern is almost monotonous. In Cinebench R15 multicore, the i5-8269U scores 609 against the i3-1315UE's 606, a 0.5% advantage. The R20 multicore test shows a similar story: 2538 versus 2525, again a 0.5% lead. R23 multicore continues the trend with 6044 against 6013, also 0.5% ahead. The single-core results are even tighter. In R15 single-core, both processors produce identical scores of 85, with a delta of 0.0%. The i5-8269U takes a 0.6% lead in R20 single-core (358 vs 356) and a 0.5% margin in R23 single-core (853 vs 849).

The most striking observation is the sheer consistency of the gaps. Every non-identical result lands at either 0.5% or 0.6% in favor of the i5-8269U. There is no single benchmark where one chip dramatically outperforms the other. The i3-1315UE has more cores (6 versus 4) and a higher boost clock (4.50 GHz versus 4.20 GHz), yet it cannot translate those specifications into a benchmark win. The data suggests that whatever architectural or frequency advantages the i3-1315UE possesses, they are almost perfectly offset by other factors, leaving the older i5-8269U with a razor-thin edge across the board.

For context, both processors sit at the 41st percentile among all CPUs, and their average benchmark scores are nearly identical: 1748 for the i5-8269U and 1739 for the i3-1315UE. The nearest rivals for the i5-8269U include the AMD Ryzen 3 PRO 3200GE (1750, -0.1% delta), the Intel Core i7-980X (1746, +0.1%), and the Intel Core i5-6600 (1744, +0.3%). The i3-1315UE's closest competitors are the Intel Core i3-10100 (1742, -0.1%), the AMD Ryzen 3 4300U (1742, -0.2%), and the same Intel Core i5-6600 (1744, -0.3%). The two chips are not just close to each other; they occupy an identical performance tier in the broader CPU landscape.

The Verdict

The data points to a clear, if narrow, conclusion: the Intel Core i5-8269U is the faster processor in every benchmark scenario tested. With 6 wins and 0 losses in head-to-head comparisons, there is no ambiguity in the results. However, the magnitude of these wins is so small—never exceeding 0.6%—that the practical difference for most users would be imperceptible. This is a statistical victory, not a performance revelation.

Who should pick the i5-8269U? The data supports it for anyone who wants the absolute highest Cinebench scores, regardless of how marginal the gain. It holds a slight edge in both single-core and multi-core workloads, which suggests it could be marginally better for rendering, encoding, or any task that scales across cores. The i5-8269U also has a higher base clock (2.60 GHz versus 1.20 GHz), which could contribute to better responsiveness in lightly threaded, bursty workloads, even if the benchmarks do not fully capture that.

Who should pick the i3-1315UE? The benchmark data alone does not justify choosing it over the i5-8269U, since it loses every test. However, the i3-1315UE has a significantly lower TDP (15 watts versus 28 watts), which is a critical factor for battery life and thermal management in mobile devices. If the choice is between a laptop that runs cooler and longer on a charge versus one that scores 0.5% higher in Cinebench, the i3-1315UE could be the more sensible option for many users. The data does not measure power efficiency directly, but the TDP difference is a hard specification that cannot be ignored.

Architecture Differences

The two processors come from different eras of Intel's design philosophy. The i5-8269U is built on Kaby Lake, specifically the Kaby Lake-R refresh, using Intel's 14 nm process node. The i3-1315UE is a Raptor Lake part, built on a 10 nm node. This generational leap means the i3-1315UE has access to newer transistor technology, which typically enables higher efficiency and more complex designs.

The core configurations are fundamentally different. The i5-8269U has 4 cores and 8 threads, a classic homogeneous design. The i3-1315UE has 6 cores and 8 threads, which strongly implies a hybrid architecture (likely a mix of performance and efficiency cores), although the FACT PACK does not explicitly state the core type split. This explains how the i3-1315UE can have more cores but the same thread count: some of its cores likely do not support hyper-threading.

Cache hierarchies also diverge. The i5-8269U features 64 KB of L1 cache per core, 256 KB of L2 per core, and 6 MB of shared L3 cache. The i3-1315UE has larger per-core allocations: 80 KB of L1 per core, 1.25 MB of L2 per core, and 10 MB of shared L3 cache. The i3-1315UE's L2 cache is nearly five times larger per core, and its L3 cache is 66% larger overall. This should theoretically benefit the newer chip, yet the benchmarks do not reflect that advantage.

The integrated graphics differ as well. The i5-8269U uses Iris Pro Plus, while the i3-1315UE has UHD Graphics 64EU. The FACT PACK does not include graphics benchmarks, so no performance comparison is possible. The socket changes from Intel BGA 1356 to Intel BGA 1744, and the die size for the i3-1315UE is not listed, while the i5-8269U measures 123 mm².

Specification Differences

The most glaring difference is the base clock. The i5-8269U runs at 2.60 GHz, while the i3-1315UE has a base clock of 1.20 GHz. That is a 1.40 GHz gap in favor of the older chip. Yet the boost clocks tell a different story: the i3-1315UE boosts to 4.50 GHz, exceeding the i5-8269U's 4.20 GHz. The i5-8269U's ability to win benchmarks despite a lower boost clock suggests its sustained all-core performance is superior, or that the i3-1315UE's boost is not sustainable under load.

TDP is another major differentiator. The i5-8269U has a 28-watt TDP, while the i3-1315UE is rated at just 15 watts. This 13-watt difference is substantial for mobile devices, implying the i3-1315UE generates less heat and requires less cooling. The i5-8269U's higher TDP likely contributes to its benchmark edge, as it can draw more power to maintain higher clocks under sustained loads.

Memory support differs: the i5-8269U supports only DDR4, while the i3-1315UE supports both DDR4 and DDR5. The i3-1315UE also has a dual-channel memory bus, while the i5-8269U's memory bus is not specified. The i3-1315UE supports PCIe Gen 4 with 8 lanes (CPU only), while the i5-8269U's PCIe capabilities are not listed. Both processors have ECC memory disabled, are not multiplier-unlocked, and are classified as active production mobile parts. The release dates are separated by nearly five years: April 2018 for the i5-8269U and January 2023 for the i3-1315UE.

FAQ

Q: Which processor has a higher average benchmark score?

A: The Intel Core i5-8269U has an average benchmark score of 1748, while the Intel Core i3-1315UE scores 1739. The i5-8269U is 9 points ahead, which is roughly a 0.5% difference.

Q: Does the i3-1315UE win any benchmark tests?

A: No. In the head-to-head comparison across six Cinebench tests (R15, R20, and R23 for both single-core and multi-core), the i3-1315UE wins 0 tests. The i5-8269U wins all 6.

Q: How do the core counts differ between the two processors?

A: The i5-8269U has 4 cores and 8 threads. The i3-1315UE has 6 cores and 8 threads. Despite having more cores, the i3-1315UE does not have more threads, indicating a different core design.

Q: What is the TDP difference?

A: The i5-8269U has a TDP of 28 watts. The i3-1315UE has a TDP of 15 watts. The i3-1315UE is designed for significantly lower power consumption.

Q: Which processor has a larger L3 cache?

A: The i3-1315UE has 10 MB of shared L3 cache. The i5-8269U has 6 MB of shared L3 cache. The i3-1315UE has 4 MB more L3 cache.

Q: Do both processors support the same memory types?

A: No. The i5-8269U supports only DDR4 memory. The i3-1315UE supports both DDR4 and DDR5 memory.

Where Each One Wins

The i5-8269U wins in every benchmark category measured, but the margins are so slim that its victories are more symbolic than substantive. In Cinebench R15 multicore, it leads by 3 points (609 vs 606). In R20 multicore, it leads by 13 points (2538 vs 2525). In R23 multicore, it leads by 31 points (6044 vs 6013). These are consistent, but small, advantages. The i5-8269U also wins single-core tests by similarly narrow margins: 0 points in R15, 2 points in R20, and 4 points in R23.

The i3-1315UE does not win any benchmark, but it wins in other ways that are not captured by Cinebench scores. Its 15-watt TDP makes it a better fit for fanless or passively cooled designs, or for laptops where battery life is paramount. Its support for DDR5 memory and PCIe Gen 4 means it can be paired with faster storage and newer memory technologies, which could improve real-world responsiveness in tasks that are not purely CPU-bound. Its larger L3 cache (10 MB vs 6 MB) and larger per-core L2 cache could also provide benefits in workloads that exhibit high cache locality, even if Cinebench does not reveal this.

In practical terms, the i5-8269U is the choice for raw compute performance, however marginal. The i3-1315UE is the choice for a modern, power-efficient platform with newer I/O and memory standards. The benchmark data says the i5-8269U is faster; the specification sheet says the i3-1315UE is more efficient and more modern. Neither chip is a clear winner for all users, but for pure Cinebench performance, the i5-8269U takes the crown by a hair.