Intel Core i7-1165G7 vs Intel Core i7-8565U Comparison

Head-to-Head Benchmarks

The recorded data is unambiguous: across all 17 head-to-head comparisons, the Intel Core i7-1165G7 wins every single test. The most striking margin appears in passmark_data_encryption, where the 1165G7 scores 5561 against the 8565U's 1993, a 179% advantage. That is the single largest gap in the entire dataset.

In the Cinebench suite, the 1165G7 maintains a remarkably consistent lead. Cinebench R15 multicore shows 835 versus 529, a 57.8% delta. The single-core version of the same test shows 117 versus 74, a 58.1% delta. Cinebench R20 multicore repeats the pattern: 3483 against 2208, a 57.7% delta, while R20 single-core lands at 491 versus 311, a 57.9% delta. Cinebench R23 multicore and single-core both show exactly 57.7% deltas, with scores of 8293 versus 5258 and 1170 versus 742 respectively. The consistency of these deltas across different Cinebench versions suggests a fundamental performance advantage rather than a test-specific artifact.

PassMark results tell a similar story but with more variance. The smallest win is in passmark_random_string_sorting, where the 1165G7 scores 12698 versus 10200, a 24.5% delta. PassMark single-thread shows 2763 versus 2118, a 30.5% delta. Data compression shows 103497 versus 75995, a 36.2% delta. The gap widens in floating-point math (19830 versus 12934, 53.3% delta), extended instructions (7323 versus 4770, 53.5% delta), and integer math (33349 versus 21581, 54.5% delta). Physics tests show 712 versus 458, a 55.5% delta. Multithread performance reaches 9958 versus 5988, a 66.3% delta. The prime number calculation test shows the second-largest gap: 46 versus 22, a 109.1% delta.

The average benchmark scores in the database put the 1165G7 at 9235 and the 8565U at 8665. Both CPUs sit at the 65th percentile among all CPUs in the database, which is notable: despite the 1165G7 winning every head-to-head test, the aggregate percentile ranking is identical. This suggests the 8565U's overall position is buoyed by its behavior across a broader range of workloads not captured in the head-to-head set.

The nearest rivals for the 1165G7, based on average score, are the Intel Xeon Gold 5320 (9234, 0% delta), Intel Core i5-10300H (9243, -0.1% delta), Intel Xeon Platinum 8280M (9260, -0.3% delta), and AMD Ryzen Threadripper 3960X (9284, -0.5% delta). For the 8565U, the nearest rivals are the Intel Core i9-13900E (8676, -0.1% delta), Intel Core i5-8365U (8708, -0.5% delta), AMD EPYC 7601 (8619, 0.5% delta), and Intel Core i7-10510U (8580, 1% delta). The rival sets are entirely different, which reflects the performance tier each CPU occupies.

The Verdict

The data points to a clear conclusion: the Intel Core i7-1165G7 is the superior processor in every measured category. For workloads that stress encryption, the 1165G7 is in a different class, delivering nearly three times the throughput of the 8565U. For multithreaded rendering tasks, the Cinebench R23 multicore score of 8293 versus 5258 represents a 57.7% advantage, which translates to noticeably shorter render times.

The 8565U, however, should not be dismissed entirely. Its average benchmark score of 8665 still places it in the 65th percentile of all CPUs, and its nearest rivals include the Intel Core i9-13900E, a far newer part, with only a 0.1% delta. The 8565U also carries a lower TDP of 15 watts compared to the 1165G7's 28 watts. For fanless or passively cooled ultraportable designs, that power envelope difference could be decisive, even though the database does not record thermals or sustained power behavior.

Who should pick which? Strictly from the recorded data, anyone prioritizing raw compute performance in single-threaded or multithreaded workloads should choose the 1165G7. The 24.5% to 179% deltas across all tests leave no ambiguity. The 8565U makes sense only in scenarios where the 15-watt TDP is a hard constraint and the performance gap is acceptable. The database does not record battery life, chassis thermals, or acoustic behavior, so those factors cannot be weighed here.

Architecture Differences

The two processors come from different architectural generations and manufacturing nodes. The 1165G7 is built on Tiger Lake, specifically the Tiger Lake-U codename, using Intel's 10 nm process with a die size of 144 mm². The 8565U is a Whiskey Lake part, specifically Whiskey Lake-U, built on Intel's 14 nm process with no die size recorded in the database.

Core and thread counts are identical: both have 4 cores and 8 threads. The cache hierarchy differs substantially. The 1165G7 has 80 KB of L1 cache per core, 1.25 MB of L2 cache per core, and 12 MB of shared L3 cache. The 8565U has 64 KB of L1 per core, 256 KB of L2 per core, and 8 MB of shared L3 cache. That is a 25% larger L1, a 5x larger L2 per core, and 50% more L3 for the 1165G7.

The memory support differs as well. The 1165G7 supports DDR4 and LPDDR4X, while the 8565U supports DDR3 and DDR4. The 8565U has a recorded memory bandwidth of 38.4 GB/s; the 1165G7 has no bandwidth figure in the database. Both use dual-channel memory buses.

The PCIe implementation is a significant architectural divergence. The 1165G7 offers PCIe Gen 4 with 4 lanes (CPU only), while the 8565U offers PCIe Gen 3 with 16 lanes (CPU only). The 1165G7's newer PCIe generation provides higher per-lane bandwidth, though the 8565U has four times the lane count.

Integrated graphics differ as well. The 1165G7 pairs with Iris Xe-LP Graphics G7 with 96 execution units, while the 8565U ships with UHD Graphics 620. The database does not include graphics benchmarks, so the practical impact of the 96 EU Iris Xe solution versus the older UHD 620 cannot be quantified here.

The base clock figures in the database are unusual: the 1165G7 records a base clock of 2.80 GHz and a boost of 4.70 GHz, while the 8565U records a base clock of 1800.00 GHz (presumably a data entry artifact, as that value is physically implausible) and a boost of 4.60 GHz. The TDP difference is clear: 28 watts for the 1165G7, 15 watts for the 8565U. The 1165G7 uses socket Intel BGA 1449; the 8565U uses Intel BGA 1528. Both are end-of-life in production status. The 1165G7 launched in September 2020 with a launch MSRP of $426. The 8565U launched in September 2018 with a launch MSRP of $409.

FAQ

Q: Which CPU wins in single-threaded performance?

A: The Intel Core i7-1165G7 wins every single-threaded test. Cinebench R23 single-core shows 1170 versus 742 (57.7% delta), and PassMark single-thread shows 2763 versus 2118 (30.5% delta).

Q: How large is the gap in encryption workloads?

A: The largest gap in the entire dataset is in passmark_data_encryption. The 1165G7 scores 5561, the 8565U scores 1993, a 179% delta. That means the 1165G7 delivers nearly three times the encryption throughput.

Q: Do both CPUs have the same core and thread counts?

A: Yes. Both the Intel Core i7-1165G7 and the Intel Core i7-8565U have 4 cores and 8 threads. The performance difference comes from architectural improvements, cache sizes, clock speeds, and process node, not from core count.

Q: What are the TDP values?

A: The 1165G7 has a TDP of 28 watts. The 8565U has a TDP of 15 watts. The lower TDP of the 8565U may be relevant for power-constrained designs, though the database does not record sustained power behavior.

Q: Are there any benchmarks where the 8565U wins?

A: No. The head-to-head dataset contains 17 tests, and the 1165G7 wins all 17. The winsB field records 0 for the 8565U.

Q: How do the average scores compare to their nearest rivals?

A: The 1165G7's average score of 9235 is essentially tied with the Intel Xeon Gold 5320 (9234, 0% delta) and slightly below the Intel Core i5-10300H (9243, -0.1% delta). The 8565U's average of 8665 is 0.1% below the Intel Core i9-13900E and 0.5% below the Intel Core i5-8365U.

Where Each One Wins

The Intel Core i7-1165G7 wins in every recorded benchmark category. The most decisive wins are in encryption (179% delta), prime number finding (109.1% delta), and multithreaded PassMark (66.3% delta). For workloads like data encryption, database processing, or compilation that stress integer and encryption units, the 1165G7 is the clear choice. For rendering tasks measured by Cinebench R23 multicore, the 57.7% delta means the 1165G7 completes the same workload in roughly two-thirds of the time.

The Intel Core i7-8565U does not win any recorded benchmark. Its only distinguishing advantage in the database is its lower TDP of 15 watts compared to 28 watts. For systems where power draw is the primary constraint, such as passively cooled thin-and-light laptops, the 8565U may be the only viable option despite its lower performance. The database shows no other category where the 8565U takes a lead.

For single-threaded responsiveness, the 1165G7's boost clock of 4.70 GHz versus the 8565U's 4.60 GHz, combined with its architectural advantages, produces a 30.5% delta in PassMark single-thread. For memory-intensive workloads, the 1165G7's larger caches (12 MB L3 versus 8 MB, 1.25 MB L2 per core versus 256 KB) likely explain some of its data compression advantage (36.2% delta), though the database does not include memory latency or bandwidth measurements for the 1165G7.

Specification Differences

| Specification | Intel Core i7-1165G7 | Intel Core i7-8565U |

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

| Base clock | 2.80 GHz | 1800.00 (recorded value) |

| Boost clock | 4.70 GHz | 4.60 GHz |

| TDP | 28 watts | 15 watts |

| Socket | Intel BGA 1449 | Intel BGA 1528 |

| Architecture | Tiger Lake | Whiskey Lake |

| Codename | Tiger Lake-U | Whiskey Lake-U |

| Generation | Core i7 (Willow Cove-U) | Core i7 (Whiskey Lake) |

| Process node | 10 nm | 14 nm |

| Die size | 144 mm² | not recorded |

| L1 cache (per core) | 80 KB | 64 KB |

| L2 cache (per core) | 1.25 MB | 256 KB |

| L3 cache (shared) | 12 MB | 8 MB |

| Memory support | DDR4, LPDDR4X | DDR3, DDR4 |

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

| PCIe | Gen 4, 4 lanes (CPU only) | Gen 3, 16 lanes (CPU only) |

| Integrated graphics | Iris Xe-LP Graphics G7 96EU | UHD Graphics 620 |

| Release date | September 2020 | September 2018 |

| Launch MSRP | $426 | $409 |

| Part number | SRK02 | SREJPSRFFW |

The base clock entry for the 8565U in the database reads "1800.00" which, taken literally, would be an implausibly high frequency. The boost clock of 4.60 GHz is recorded separately and is plausible. Given the 15-watt TDP and the Whiskey Lake architecture, the actual base clock is likely far lower, but the database does not provide a corrected value. The 1165G7's base clock of 2.80 GHz and boost of 4.70 GHz are internally consistent with a 28-watt TDP.

Both CPUs share identical core counts (4), thread counts (8), dual-channel memory buses, ECC memory support (false for both), market segment (Mobile), production status (End-of-life), and multiplier lock status (unlocked, false for both). The foundry for both is Intel. Neither has recorded transistor counts or vCache3d data in the database.