Core i7-870 vs Core i7-4600M

The Core i7-870 packs 4 cores / 8 threads, while the Core i7-4600M offers 2 cores / 4 threads — the Core i7-870 has 2 more cores. Boost clocks reach 3.6 GHz on the Core i7-870 versus 3.6 GHz on the Core i7-4600M — identical boost frequencies (base: 2.93 GHz vs 2.9 GHz). The Core i7-870 uses the Lynnfield (2009−2010) architecture (45 nm), while the Core i7-4600M uses Haswell (2013−2015) (22 nm). In PassMark, the Core i7-870 scores 3,164 against the Core i7-4600M's 3,204 — a 1.3% lead for the Core i7-4600M. Geekbench 6 single-core — the metric most relevant to gaming — records 476 vs 1,025, a 73.2% lead for the Core i7-4600M that directly translates to higher frame rates. Multi-core Geekbench: 1,541 vs 2,132 (32.2% advantage for the Core i7-4600M). L3 cache: 8 MB (total) on the Core i7-870 vs 4 MB (total) on the Core i7-4600M.

The Core i7-870 uses the LGA1156 socket (PCIe 2.0), while the Core i7-4600M uses PGA946 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR3-1333 on the Core i7-870 versus DDR3L 1600 MHz on the Core i7-4600M — the Core i7-4600M supports 200% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Core i7-4600M supports up to 32 GB of RAM compared to 16 GB — 66.7% more capacity for professional workloads. Both feature 2-channel memory with ECC support. Both provide 16 PCIe lanes. Chipset compatibility: P55,H55,H57,Q57 (Core i7-870) and Intel HM86,Intel HM87,Intel QM87 (Core i7-4600M).

Neither processor supports overclocking. Virtualization support: VT-x, VT-d (Core i7-870) vs true (Core i7-4600M). The Core i7-4600M includes integrated graphics (Intel HD Graphics 4600), while the Core i7-870 requires a dedicated GPU. Primary use case: Core i7-870 targets Legacy Desktop, Core i7-4600M targets Mobile.