Core i7-8665UE vs Core i5-4440

The Core i7-8665UE packs 4 cores / 8 threads, matching the Core i5-4440's 4 cores. Boost clocks reach 4.4 GHz on the Core i7-8665UE versus 3.3 GHz on the Core i5-4440 — a 28.6% clock advantage for the Core i7-8665UE (base: 1.7 GHz vs 3.1 GHz). The Core i7-8665UE uses the Whiskey Lake-U (2018−2019) architecture (14 nm), while the Core i5-4440 uses Haswell (2013−2015) (22 nm). In PassMark, the Core i7-8665UE scores 4,852 against the Core i5-4440's 4,788 — a 1.3% lead for the Core i7-8665UE. L3 cache: 8 MB (total) on the Core i7-8665UE vs 6 MB (total) on the Core i5-4440.

The Core i7-8665UE uses the FCBGA1528 socket (PCIe 3.0), while the Core i5-4440 uses LGA1150 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR4-2400 on the Core i7-8665UE versus DDR3-1600 on the Core i5-4440 — the Core i7-8665UE supports 28.6% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Core i7-8665UE supports up to 64 GB of RAM compared to 32 GB — 66.7% more capacity for professional workloads. Both feature 2-channel memory with ECC support. Both provide 16 PCIe lanes.

Neither processor supports overclocking. Virtualization support: VT-x, VT-d (Core i7-8665UE) vs VT-x, VT-d, EPT (Core i5-4440). Both include integrated graphics — UHD Graphics 620 (Core i7-8665UE) and HD Graphics 4600 (Core i5-4440) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Core i7-8665UE targets Embedded, Core i5-4440 targets Budget. Direct competitor: Core i5-4440 rivals Ryzen 3 1200.

The Core i7-8665UE launched at $409 MSRP, while the Core i5-4440 debuted at $184. At current prices ($409 vs $101), the Core i5-4440 is $308 cheaper. In terms of value (PassMark points per dollar), the Core i7-8665UE delivers 11.9 pts/$ vs 47.4 pts/$ for the Core i5-4440 — making the Core i5-4440 the 119.9% better value option.