Intel Core i7-1065G7 vs Intel Core i7-8565U Comparison

Head-to-Head Benchmarks

The data is unambiguous: the Core i7-1065G7 wins every single head-to-head benchmark in the database, 17 wins to zero. There is no workload category where the older Whiskey Lake part manages to pull ahead.

The most dramatic gap appears in the PassMark data encryption test. The i7-1065G7 scores 4552, while the i7-8565U scores 1993, a 56.2% deficit. This suggests the Ice Lake chip has substantially stronger cryptographic acceleration, likely a result of new instruction support that the Whiskey Lake design lacks.

The Cinebench results tell a consistent story of roughly 23% superiority across the board. In Cinebench R23 multicore, the i7-1065G7 scores 6866 against 5258 for the i7-8565U, a 23.4% advantage. Single-core R23 shows the same delta: 969 versus 742, again 23.4%. The R15 and R20 runs confirm this pattern, with multicore deltas of 23.4% in both cases (691 vs 529, and 2883 vs 2208) and single-core deltas of 23.7% and 23.4% respectively.

PassMark integer math shows the i7-1065G7 at 28660 versus 21581 for the i7-8565U, a 24.7% lead. Floating point math follows suit: 16603 versus 12934, a 22.1% advantage. The multithreaded PassMark score is even more lopsided at 26.8%, with 8185 against 5988.

Extended instructions favor the newer chip by 20.5% (5998 vs 4770). Prime number finding shows a 24.1% gap (29 vs 22), and physics simulation is 22.2% better (589 vs 458).

The narrowest margins appear in the lighter workloads. PassMark single-thread is just 7.7% apart, 2295 versus 2118. Random string sorting is the closest test of all, with only a 4.6% difference: 10688 for the i7-1065G7 versus 10200 for the i7-8565U.

Data compression is 13.9% better on the Ice Lake chip, 88300 versus 75995. That is a meaningful gap for anyone doing file archiving or similar workloads.

The overall averages reflect this dominance, though the gap narrows. The i7-8565U carries a 65th percentile ranking across all CPUs with an average benchmark score of 8665. The i7-1065G7 sits at the 64th percentile with an average of 8293. The newer chip's nearest rivals include the Xeon D-2799 (0.2% faster), Xeon Platinum 8268 (0.3% faster), Xeon Gold 5320T (0.3% faster), and Core i5-10210U (0.6% faster). The i7-8565U, by comparison, trades blows with the Core i9-13900E (0.1% faster), Core i5-8365U (0.5% faster), AMD EPYC 7601 (0.5% slower), and Core i7-10510U (1% slower).

FAQ

Q: Is the Core i7-1065G7 faster in every benchmark?

A: Yes. Across all 17 head-to-head tests recorded in the database, the i7-1065G7 wins outright. The i7-8565U does not claim a single victory.

Q: What is the biggest performance gap between the two chips?

A: The PassMark data encryption test shows the largest difference. The i7-1065G7 scores 4552, which is 56.2% ahead of the i7-8565U's 1993.

Q: How close is the single-threaded performance?

A: It is the closest category. PassMark single-thread scores are 2295 for the i7-1065G7 and 2118 for the i7-8565U, a 7.7% gap. The random string sorting test is even tighter at 4.6%.

Q: Which chip has better multi-core performance?

A: The i7-1065G7. Cinebench R23 multicore shows 6866 versus 5258, a 23.4% advantage. PassMark multithread shows a 26.8% lead, 8185 versus 5988.

Q: Are both chips still in production?

A: No. The i7-8565U is listed as end-of-life, while the i7-1065G7 is marked as active.

Q: Do both processors support ECC memory?

A: No. Both the i7-8565U and the i7-1065G7 have ECC memory support listed as false.

Architecture Differences

The two processors come from different architectural generations and manufacturing nodes. The i7-8565U is built on Whiskey Lake, a 14 nm design from Intel, with the codename Whiskey Lake-U. The i7-1065G7 uses the Ice Lake architecture, specifically Ice Lake-U, and moves to Intel's 10 nm process. The die size for the i7-1065G7 is recorded at 123 mm², while no die size is listed for the Whiskey Lake part.

The core microarchitecture differs substantially. The i7-8565U belongs to the Core i7 (Whiskey Lake) generation, while the i7-1065G7 belongs to the Core i7 (Sunny Cove-U) generation. Sunny Cove is a newer microarchitecture design that introduces significant IPC improvements over the older Whiskey Lake cores.

Cache layouts differ at the L1 level. The i7-8565U has 64 KB of L1 cache per core, while the i7-1065G7 has 80 KB per core. Both chips share 256 KB of L2 per core and 8 MB of shared L3 cache.

The integrated graphics solutions are different tiers. The i7-8565U ships with UHD Graphics 620, while the i7-1065G7 ships with Iris Plus. The Iris Plus solution is the more capable graphics engine, which is relevant for users relying on integrated graphics for light gaming or media work.

Memory support diverges as well. The i7-8565U supports both DDR3 and DDR4 memory, while the i7-1065G7 is limited to DDR4. The newer chip has a significantly higher memory bandwidth rating of 51.2 GB/s, compared to 38.4 GB/s for the Whiskey Lake part. Both use dual-channel memory buses.

PCI Express support also differs. The i7-8565U lists Gen 3 with 16 lanes (CPU only), while the i7-1065G7 simply lists Gen 3 without a lane count in the database.

The sockets are different physical packages: Intel BGA 1528 for the i7-8565U and Intel BGA 1526 for the i7-1065G7. These are not interchangeable, so platform choice matters.

Specification Differences

Both processors share the same core and thread counts: 4 cores and 8 threads. Both have a 15 W TDP, target the mobile market segment, and have locked multipliers.

Clock speeds are a notable point of difference, and here the older chip actually holds the edge on paper. The i7-8565U has a base clock of 1800 MHz and a boost clock of 4.60 GHz. The i7-1065G7 runs a 1300 MHz base clock and boosts to 3.90 GHz. Despite the lower clocks, the Ice Lake chip wins every benchmark, which points to a substantial IPC advantage from the newer architecture.

The process node differs: 14 nm for the i7-8565U versus 10 nm for the i7-1065G7. The die size is recorded only for the i7-1065G7 at 123 mm².

Memory bandwidth is 38.4 GB/s for the i7-8565U and 51.2 GB/s for the i7-1065G7. Memory support includes DDR3 and DDR4 for the older chip, while the newer one supports only DDR4.

The integrated graphics are UHD Graphics 620 versus Iris Plus. PCIe is Gen 3 with 16 lanes for the i7-8565U, while the i7-1065G7 is listed as Gen 3 without a lane count.

Release timing differs by roughly ten months. The i7-8565U launched on 2018-09-30 with a launch MSRP of $409. The i7-1065G7 launched on 2019-07-31 with no launch MSRP recorded in the database.

Production status is split: the i7-8565U is end-of-life, while the i7-1065G7 remains active.

The part numbers are SRFFW for the i7-8565U and SRG0N for the i7-1065G7.

The Verdict

The data supports a clear recommendation for the Core i7-1065G7 in nearly every scenario. It wins all 17 head-to-head benchmarks, often by substantial margins. The 23.4% Cinebench multicore advantage and the 56.2% encryption lead are too large to ignore for any compute-focused workload.

The i7-8565U retains one practical edge: its higher boost clock of 4.60 GHz versus 3.90 GHz. The database shows this does not translate into benchmark wins, but the clock advantage could matter in short, lightly threaded bursts where the older chip's higher frequency ceiling is the deciding factor. The single-thread tests are indeed the closest category, with only a 7.7% gap in PassMark single-thread scores.

Users on a Whiskey Lake platform should not expect the i7-8565U to match the newer chip. The i7-1065G7 delivers superior results across rendering, encryption, math workloads, and general multithreaded performance. The active production status of the i7-1065G7 also makes it the more forward-looking option.

The i7-8565U is the choice for anyone already invested in a BGA 1528 platform who cannot change sockets, or for workloads that specifically favor higher clock speeds over architectural efficiency. The recorded data, however, suggests those workloads would be rare. The i7-1065G7 is the stronger processor by nearly every measurable metric in the database.