Intel Core i5-8365UE vs Intel Core i7-3740QM Comparison

FAQ

Q: Which processor has the higher boost clock?

A: The Intel Core i5-8365UE boosts to 4.10 GHz, which is higher than the Intel Core i7-3740QM's 3.70 GHz boost clock. Despite this advantage, the i7-3740QM wins every head-to-head benchmark in the database.

Q: How do the two processors compare in multi-core Cinebench R23 performance?

A: The Intel Core i7-3740QM scores 4859 in Cinebench R23 multicore, while the Intel Core i5-8365UE scores 4710. This gives the i7-3740QM a 3.2% advantage in that test.

Q: What is the difference in TDP between the two chips?

A: The Intel Core i7-3740QM has a TDP of 45 watts, while the Intel Core i5-8365UE has a TDP of 15 watts. The i5-8365UE draws considerably less power, making it more suited for thin-and-light designs.

Q: Do both processors support the same memory type?

A: No. The Intel Core i5-8365UE supports DDR4 memory with a bandwidth of 38.4 GB/s. The database records no specific memory support type for the Intel Core i7-3740QM, though both use dual-channel memory buses.

Q: Which CPU has a higher average benchmark score?

A: The Intel Core i7-3740QM has an average benchmark score of 1378, slightly ahead of the Intel Core i5-8365UE's 1362. Both processors sit at the 36th percentile among all CPUs in the database.

Q: What is the production status of each processor?

A: The Intel Core i5-8365UE is listed as Active in production, while no production status is recorded for the Intel Core i7-3740QM. The i7-3740QM was released in September 2012, and the i5-8365UE was released in April 2019.

Architecture Differences

The two processors come from different eras of Intel's mobile lineup. The Intel Core i7-3740QM is built on the Ivy Bridge architecture, using a 22 nm process node manufactured by Intel. The die packs 1,400 million transistors across a 160 mm² area. The Intel Core i5-8365UE, by contrast, uses the Whiskey Lake architecture (specifically Whiskey Lake-U) on a 14 nm process node. The database records no transistor count or die size for the i5-8365UE, reflecting the different levels of detail available for each part.

Both chips use four cores and eight threads, and both share the same cache structure: 64 KB of L1 cache per core, 256 KB of L2 cache per core, and 6 MB of shared L3 cache. The socket differs, with the i7-3740QM using Intel BGA 1224 and the i5-8365UE using Intel BGA 1528, meaning they are not physically interchangeable in a system.

The integrated graphics also differ. The i7-3740QM carries Intel HD 4000 graphics, while the i5-8365UE features UHD Graphics 620. The newer Whiskey Lake part also brings PCIe Gen 3 support with 16 lanes (CPU only), a feature not recorded for the Ivy Bridge chip. The i5-8365UE supports DDR4 memory with a rated bandwidth of 38.4 GB/s, whereas the i7-3740QM's memory support is not specified in the database, though both use dual-channel memory buses.

The clock behavior is notable. The i5-8365UE has a base clock recorded as 1600.00 MHz, which is an unusual figure compared to the i7-3740QM's 2.70 GHz base clock. The i5-8365UE compensates with a higher boost clock of 4.10 GHz versus 3.70 GHz. Neither processor has an unlocked multiplier. The i5-8365UE has a part number of SRFDU, while no part number is listed for the i7-3740QM.

Head-to-Head Benchmarks

The database records six head-to-head benchmark comparisons, and the Intel Core i7-3740QM wins all six. The margins are consistent, ranging from 3.1% to 4.5%, which suggests the older chip maintains a steady performance edge across different workloads and Cinebench versions.

In Cinebench R15 multicore, the i7-3740QM scores 489 against the i5-8365UE's 474, a 3.2% advantage. The single-core R15 test shows a larger gap: 69 versus 66, a 4.5% delta in favor of the i7-3740QM. This is the largest single margin in the head-to-head set, indicating that the Ivy Bridge chip's per-core performance is particularly strong relative to the Whiskey Lake part in that specific test.

Moving to Cinebench R20, the multicore scores are 2040 for the i7-3740QM and 1978 for the i5-8365UE, again a 3.1% lead. The single-core R20 test shows 288 versus 279, a 3.2% delta. Cinebench R23 follows the same pattern: multicore 4859 versus 4710 (3.2%), and single-core 686 versus 665 (3.2%).

The persistence of the 3.2% margin across R20 and R23 multicore and single-core tests suggests a consistent architectural efficiency advantage for the i7-3740QM, despite its older process node and lower boost clock. The i5-8365UE's higher 4.10 GHz boost clock does not translate into a benchmark win in any recorded test. The i7-3740QM also holds a slight edge in average benchmark score: 1378 versus 1362.

The i7-3740QM's nearest rivals in the database include the AMD Ryzen 3 PRO 1200 (average score 1379, delta 0%), the AMD Ryzen 3 PRO 2300U (1379, delta -0.1%), and the AMD Opteron 6366 HE (1379, delta -0.1%). The i5-8365UE's nearest rivals include the Intel Core i5-6500T (1362, delta 0%), the Intel Core i7-3820QM (1366, delta -0.3%), and the Intel Xeon D-1521 (1367, delta -0.4%). Both chips sit at the 36th percentile of all CPUs in the database, indicating they occupy a similar overall performance tier despite the head-to-head differences.

Specification Differences

| Specification | Intel Core i7-3740QM | Intel Core i5-8365UE |

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

| Base clock | 2.70 GHz | 1600.00 MHz |

| Boost clock | 3.70 GHz | 4.10 GHz |

| TDP | 45 W | 15 W |

| Socket | Intel BGA 1224 | Intel BGA 1528 |

| Architecture | Ivy Bridge | Whiskey Lake |

| Codename | Ivy Bridge | Whiskey Lake-U |

| Process node | 22 nm | 14 nm |

| Transistors | 1,400 million | Not recorded |

| Die size | 160 mm² | Not recorded |

| Memory support | Not recorded | DDR4 |

| Memory bandwidth | Not recorded | 38.4 GB/s |

| PCIe | Not recorded | Gen 3, 16 Lanes (CPU only) |

| Integrated graphics | Intel HD 4000 | UHD Graphics 620 |

| Production status | Not recorded | Active |

| Release date | 2012-09-02 | 2019-04-15 |

| Launch MSRP | Not recorded | $297 |

| Part number | Not recorded | SRFDU |

Both processors share the same core count (4), thread count (8), L1 cache (64 KB per core), L2 cache (256 KB per core), L3 cache (6 MB shared), memory bus (dual-channel), ECC support (false for both), market segment (mobile), and unlocked multiplier status (false for both).

Where Each One Wins

The Intel Core i7-3740QM wins in every benchmark category recorded in the database. It leads in Cinebench R15, R20, and R23, both single-core and multicore. The margins are meaningful but not overwhelming: a 3.2% advantage in most tests, with a 4.5% edge in R15 single-core. This makes the i7-3740QM the stronger choice for any workload represented by these Cinebench tests, whether single-threaded or multi-threaded. Its higher TDP of 45 watts likely contributes to sustained performance, as the chip has more thermal headroom to maintain clocks under load.

The Intel Core i5-8365UE does not win any recorded benchmark, but it has clear advantages in other dimensions. Its TDP of 15 watts is one-third that of the i7-3740QM, making it far more suitable for fanless or low-power designs, longer battery life, and compact laptops. It also supports DDR4 memory with 38.4 GB/s bandwidth, which the older chip's entry does not record. The i5-8365UE has a higher boost clock of 4.10 GHz, which may help in bursty, short-duration workloads even if it does not translate into a Cinebench win. Its UHD Graphics 620 is a newer integrated GPU than the i7-3740QM's HD 4000, and the Whiskey Lake part brings PCIe Gen 3 support with 16 lanes.

In practical terms, the i7-3740QM is the pick for raw compute performance in the recorded benchmarks, particularly for sustained multi-core rendering workloads. The i5-8365UE is the pick for power-sensitive mobile designs where the 15-watt TDP, newer memory support, and active production status matter more than the small benchmark deficit. The i5-8365UE also carries a recorded launch MSRP of $297, while no launch price is recorded for the i7-3740QM.

Both processors sit at the 36th percentile among all CPUs, so the head-to-head differences are relatively small in the broader context of the database. The i7-3740QM's average benchmark score of 1378 places it just above the i5-8365UE's 1362, and each chip's nearest rivals cluster within a fraction of a percent of their average scores. The performance gap between these two is consistent but modest, and the choice between them depends heavily on platform requirements, power budgets, and the importance of newer features like DDR4 support and PCIe Gen 3.