Core i7-8665UE vs Core i5-3570

The Core i7-8665UE packs 4 cores / 8 threads, matching the Core i5-3570's 4 cores. Boost clocks reach 4.4 GHz on the Core i7-8665UE versus 3.8 GHz on the Core i5-3570 — a 14.6% clock advantage for the Core i7-8665UE (base: 1.7 GHz vs 3.4 GHz). The Core i7-8665UE uses the Whiskey Lake-U (2018−2019) architecture (14 nm), while the Core i5-3570 uses Ivy Bridge (2012−2013) (22 nm). In PassMark, the Core i7-8665UE scores 4,852 against the Core i5-3570's 4,932 — a 1.6% lead for the Core i5-3570. L3 cache: 8 MB (total) on the Core i7-8665UE vs 6 MB (total) on the Core i5-3570.

The Core i7-8665UE uses the FCBGA1528 socket (PCIe 3.0), while the Core i5-3570 uses LGA1155 (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 i5-3570 — 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. Both support VT-x, VT-d virtualization. Both include integrated graphics — UHD Graphics 620 (Core i7-8665UE) and HD 2500 (Core i5-3570) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Core i7-8665UE targets Embedded, Core i5-3570 targets Budget. Direct competitor: Core i5-3570 rivals Ryzen 3 1200.

The Core i7-8665UE launched at $409 MSRP, while the Core i5-3570 debuted at $194. At current prices ($409 vs $35), the Core i5-3570 is $374 cheaper. In terms of value (PassMark points per dollar), the Core i7-8665UE delivers 11.9 pts/$ vs 140.9 pts/$ for the Core i5-3570 — making the Core i5-3570 the 168.9% better value option.