Core i7-11390H vs Core i5-10400T

The Core i7-11390H packs 4 cores / 8 threads, while the Core i5-10400T offers 6 cores / 12 threads — the Core i5-10400T has 2 more cores. Boost clocks reach 5 GHz on the Core i7-11390H versus 3.6 GHz on the Core i5-10400T — a 32.6% clock advantage for the Core i7-11390H (base: 2.9 GHz vs 2 GHz). The Core i7-11390H is built on the Tiger Lake-H35 (2021) architecture. In PassMark, the Core i7-11390H scores 9,798 against the Core i5-10400T's 9,789 — a 0.1% lead for the Core i7-11390H. Geekbench 6 single-core — the metric most relevant to gaming — records 1,948 vs 1,272, a 42% lead for the Core i7-11390H that directly translates to higher frame rates. L3 cache: 12 MB (total) on the Core i7-11390H vs 12 MB Intel® Smart Cache on the Core i5-10400T.

The Core i7-11390H uses the FCBGA1449 socket (PCIe 4.0), while the Core i5-10400T uses LGA1200 (PCIe 3.0) — making them incompatible on the same motherboard. Both support up to DDR4-3200 memory speed. The Core i5-10400T supports up to 128 GB of RAM compared to 64 GB — 66.7% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 20 (Core i7-11390H) vs 16 (Core i5-10400T) — the Core i7-11390H offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: HM570,QC570,WM590 (Core i7-11390H) and H410,B460,H470,Z490,H510,B560,H570,Z590 (Core i5-10400T).

Neither processor supports overclocking. Only the Core i7-11390H supports AVX-512 instructions — important for machine learning and scientific applications. Both support VT-x, VT-d, EPT virtualization. Both include integrated graphics — Iris Xe Graphics 96EU (Core i7-11390H) and UHD Graphics 630 (Core i5-10400T) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Core i7-11390H targets Thin & Light Gaming Laptop, Core i5-10400T targets Low Power Desktop. Direct competitor: Core i7-11390H rivals Ryzen 7 5800U; Core i5-10400T rivals Ryzen 5 3400GE.