Intel Core i3-8145UE vs Intel Core i5-3570S Comparison

# Head-to-Head Benchmarks

The benchmark data presents a remarkably consistent picture: the Intel Core i5-3570S wins every single head-to-head comparison, and it does so by nearly identical margins across all five tested workloads. The most striking finding is the uniformity of the victory—whether the test stresses a single core or all cores, the older desktop chip maintains roughly a 19% advantage.

In Cinebench R15 multicore, the i5-3570S scores 402 against the i3-8145UE's 337, a 19.3% lead. That margin barely shifts in Cinebench R20 multicore, where 1676 versus 1408 yields a 19% difference. The pattern holds in Cinebench R23 multicore: 3991 against 3354, again 19%. This consistency suggests the performance gap is structural rather than workload-dependent.

Single-core results tell the same story. The i5-3570S posts 236 in Cinebench R20 single-core versus 198 for the i3-8145UE, a 19.2% edge. In Cinebench R23 single-core, the scores are 563 and 473, respectively, another 19% gap. The i5-3570S also holds a Geekbench advantage—1793 multicore and 632 single-core—though the i3-8145UE has no comparable Geekbench scores in the data for a direct head-to-head.

What makes this interesting is that the i3-8145UE has a higher boost clock (3.90 GHz versus 3.80 GHz), yet it still loses every single-core test by roughly a fifth. The data implies that clock speed alone does not determine real-world performance—architecture efficiency and core count matter enormously. The i5-3570S's four physical cores give it a fundamental throughput advantage in multicore workloads, while its older Ivy Bridge architecture apparently still delivers competitive single-thread performance despite the newer Whiskey Lake design.

The average benchmark scores reinforce this: the i5-3570S averages 1169 across all tests, while the i3-8145UE averages 1154. Their percentile rankings are identical at 33, placing both in the lower third of all CPUs tracked. In the nearest-rival comparisons, the i5-3570S sits alongside the Core i7-2960XM (exact tie at 1169), AMD Opteron 6220 (0.1% behind), and Core i7-3635QM (0.1% ahead). The i3-8145UE competes with the AMD Opteron 4334 (0.1% behind), AMD Ryzen Embedded R2312 (0.2% behind), and Core i5-4430 (0.4% ahead). Neither chip escapes its mid-pack positioning, but the i5-3570S consistently outperforms its mobile counterpart.

FAQ

Q: Which CPU wins more benchmarks in the head-to-head data?

A: The Intel Core i5-3570S wins all five head-to-head comparisons—Cinebench R15 multicore, R20 multicore, R20 single-core, R23 multicore, and R23 single-core. The i3-8145UE records zero wins in the head-to-head data.

Q: How large is the performance gap between the two CPUs?

A: The i5-3570S leads by 19.3% in Cinebench R15 multicore and by 19% in Cinebench R20 multicore, R23 multicore, and R23 single-core. The single-core R20 gap is 19.2%. Every head-to-head test shows a lead between 19% and 19.3%.

Q: Does the i3-8145UE's higher boost clock help it in single-core tests?

A: No. Despite boosting to 3.90 GHz versus the i5-3570S's 3.80 GHz, the i3-8145UE loses single-core tests by roughly 19%. The data suggests architectural differences and possibly thermal/power constraints outweigh the raw clock advantage.

Q: How do their overall benchmark averages compare?

A: The i5-3570S has an average benchmark score of 1169, while the i3-8145UE averages 1154. Both CPUs rank at the 33rd percentile among all CPUs tracked, indicating similar overall positioning despite the head-to-head disparity.

Q: Are there any benchmarks where the i3-8145UE is competitive?

A: In the head-to-head data, no. However, the i3-8145UE's nearest rivals include the AMD Opteron 4334 (0.1% behind), AMD Ryzen Embedded R2312 (0.2% behind), and Intel Core i5-4430 (0.4% ahead). Its average score of 1154 places it within 15 points of the i5-3570S's 1169, suggesting the gap narrows when considering a broader benchmark suite.

Q: What do the nearest-rival comparisons reveal about each CPU?

A: The i5-3570S matches the Core i7-2960XM exactly (both 1169), sits 0.1% behind the AMD Opteron 6220, and trails the Core i7-3635QM by 0.1%. The i3-8145UE is 0.1% behind the AMD Opteron 4334, 0.2% behind the AMD Ryzen Embedded R2312, and 0.4% ahead of the Core i5-4430.

Architecture Differences

The two CPUs represent fundamentally different design philosophies separated by six years of silicon evolution. The i5-3570S belongs to the Ivy Bridge generation, built on Intel's 22 nm process with a die size of 133 mm². It features four physical cores and four threads, a 3.10 GHz base clock, and a 3.80 GHz boost clock. Its cache hierarchy includes 64 KB of L1 per core, 256 KB of L2 per core, and 6 MB of shared L3 cache.

The i3-8145UE is a Whiskey Lake-U part, manufactured on Intel's 10 nm process. It has two physical cores but four threads via Hyper-Threading, a 2.20 GHz base clock, and a 3.90 GHz boost clock. Its cache layout provides 64 KB of L1 per core, 256 KB of L2 per core, and 4 MB of shared L3. The die size is not listed in the data.

Memory support marks a clear generational divide. The i5-3570S uses DDR3 memory on a dual-channel bus, while the i3-8145UE supports DDR4 with a listed memory bandwidth of 38.4 GB/s. Both CPUs offer PCIe Gen 3 with 16 lanes from the CPU, and neither supports ECC memory.

The integrated graphics differ significantly. The i5-3570S pairs with Intel HD 2500, whereas the i3-8145UE includes UHD Graphics 620. The i5-3570S targets the desktop segment with an Intel Socket 1155, while the i3-8145UE is a mobile part soldered to Intel BGA 1528. Their power envelopes reflect this: the i5-3570S carries a 65 W TDP, while the i3-8145UE sips at 15 W.

The production status also differs. The i3-8145UE is listed as "Active," while the i5-3570S has no production status listed. The i5-3570S launched on 2012-05-31, and the i3-8145UE followed on 2018-09-30. Neither CPU has a multiplier unlocked, and neither has a launch MSRP in the data.

The Verdict

The data points to a clear but nuanced conclusion. For raw compute performance, the i5-3570S is the superior chip—it wins every head-to-head benchmark by approximately 19%, regardless of whether the workload is single-threaded or multi-threaded. The four physical cores provide a structural advantage that the i3-8145UE's two cores with Hyper-Threading cannot overcome, even when the newer chip boosts 100 MHz higher.

However, the verdict is not simply "the i5-3570S is better." The i3-8145UE operates at a 15 W TDP versus 65 W, making it dramatically more power-efficient. It supports DDR4 memory with a specified 38.4 GB/s bandwidth, includes a newer integrated graphics solution, and remains in active production. The i5-3570S, by contrast, is a desktop part from 2012 with no listed production status.

The average benchmark scores tell a more nuanced story than the head-to-head results. The i5-3570S averages 1169 across all benchmarks, while the i3-8145UE averages 1154—a difference of just 1.3%. Both sit at the 33rd percentile of all CPUs. This suggests that in a broader test suite beyond the five Cinebench runs, the two chips would be far closer. The head-to-head data may reflect workloads that favor the i5-3570S's core count, while other tests could narrow the gap.

The nearest-rival comparisons reinforce this ambivalence. The i5-3570S trades blows with the Core i7-2960XM (exact tie), AMD Opteron 6220 (0.1% behind), and Core i7-3635QM (0.1% ahead). The i3-8145UE sits within 0.6% of three different rivals. Neither chip distinguishes itself meaningfully from its peers.

Specification Differences

| Specification | Intel Core i5-3570S | Intel Core i3-8145UE |

|---|---|---|

| Cores | 4 | 2 |

| Threads | 4 | 4 |

| Base Clock | 3.10 GHz | 2.20 GHz |

| Boost Clock | 3.80 GHz | 3.90 GHz |

| TDP | 65 W | 15 W |

| Socket | Intel Socket 1155 | Intel BGA 1528 |

| Architecture | Ivy Bridge | Whiskey Lake |

| Codename | Ivy Bridge | Whiskey Lake-U |

| Process Node | 22 nm | 10 nm |

| Die Size | 133 mm² | Not listed |

| L3 Cache | 6 MB (shared) | 4 MB (shared) |

| Memory Support | DDR3 | DDR4 |

| Memory Bandwidth | Not listed | 38.4 GB/s |

| Integrated Graphics | Intel HD 2500 | UHD Graphics 620 |

| Market Segment | Desktop | Mobile |

| Production Status | Not listed | Active |

| Release Date | 2012-05-31 | 2018-09-30 |

| Part Number | SR0T9 | SRFDT |

Fields that match include manufacturer (Intel), L1 cache (64 KB per core), L2 cache (256 KB per core), memory bus (dual-channel), ECC support (false for both), PCIe (Gen 3, 16 lanes CPU only), multiplier unlock (false for both), and foundry (Intel).

Where Each One Wins

The i5-3570S claims victory in every measured benchmark category, but the nature of those wins points to specific use cases. Its 19% advantage in Cinebench R15, R20, and R23 multicore tests indicates superior performance in heavily threaded workloads such as video encoding, 3D rendering, and scientific computing. The four physical cores allow it to process parallel tasks more efficiently than the i3-8145UE's two cores with Hyper-Threading. Its single-core wins, though smaller in absolute terms, still show a 19% edge that would benefit everyday responsiveness in lightly threaded applications.

The i3-8145UE, despite losing every head-to-head test, wins in categories not captured by raw benchmark scores. Its 15 W TDP makes it suitable for fanless or passively cooled mobile systems where the 65 W i5-3570S would be impractical. The DDR4 memory support and 38.4 GB/s bandwidth enable faster memory operations in supported platforms. Its UHD Graphics 620 likely provides better integrated graphics performance than the aging HD 2500, though the data does not include graphics benchmarks. The active production status means it remains available for new designs, whereas the i5-3570S has no such status.

The use-case split is therefore clear. The i5-3570S suits desktop builds prioritizing compute performance, particularly for multithreaded workloads where its four cores shine. The i3-8145UE fits compact, power-constrained mobile devices where efficiency and modern platform features matter more than raw throughput. The data shows the i5-3570S is the faster CPU in every tested scenario, but the i3-8145UE's advantages in power consumption, memory technology, and production availability make it the logical choice for a different class of system. Neither chip dominates the other across all dimensions—the benchmark results favor the i5-3570S, while the platform attributes favor the i3-8145UE.