Core i5-1335U vs Core i7-10870H

The Core i5-1335U packs 10 cores / 12 threads, while the Core i7-10870H offers 8 cores / 16 threads — the Core i5-1335U has 2 more cores. Boost clocks reach 4.6 GHz on the Core i5-1335U versus 4.8 GHz on the Core i7-10870H — a 4.3% clock advantage for the Core i7-10870H (base: 1.3 GHz vs 2.2 GHz). The Core i5-1335U uses the Raptor Lake-U (2023) architecture (Intel 7 nm), while the Core i7-10870H uses Comet Lake-H (2020) (14 nm). In PassMark, the Core i5-1335U scores 14,093 against the Core i7-10870H's 14,087 — a 0% lead for the Core i5-1335U. Cinebench R23 multi-core: 8,977 vs 9,594 (6.6% advantage for the Core i7-10870H). Geekbench 6 single-core — the metric most relevant to gaming — records 2,389 vs 1,228, a 64.2% lead for the Core i5-1335U that directly translates to higher frame rates. Multi-core Geekbench: 9,456 vs 6,822 (32.4% advantage for the Core i5-1335U). Both processors carry 12 MB (total) of L3 cache.

The Core i5-1335U uses the FCBGA1744 socket (PCIe 3.0), while the Core i7-10870H uses BGA1440 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches LPDDR5-6400 on the Core i5-1335U versus DDR4-2933 on the Core i7-10870H — the Core i5-1335U supports 22.2% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Core i7-10870H supports up to 128 GB of RAM compared to 96 GB — 28.6% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 20 (Core i5-1335U) vs 16 (Core i7-10870H) — the Core i5-1335U offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: SoC (Core i5-1335U) and WM490,HM470,QM480 (Core i7-10870H).

Neither processor supports overclocking. Both support VT-x, VT-d, EPT virtualization. Both include integrated graphics — Iris Xe Graphics (80 EU) (Core i5-1335U) and UHD Graphics 630 (Core i7-10870H) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Core i5-1335U targets Productivity, Core i7-10870H targets Gaming. Direct competitor: Core i5-1335U rivals Ryzen 5 7535U; Core i7-10870H rivals Ryzen 7 4800H.