Core i7-870 vs Core i7-13700K

The Core i7-870 packs 4 cores / 8 threads, while the Core i7-13700K offers 16 cores / 24 threads — the Core i7-13700K has 12 more cores. Boost clocks reach 3.6 GHz on the Core i7-870 versus 5.4 GHz on the Core i7-13700K — a 40% clock advantage for the Core i7-13700K (base: 2.93 GHz vs 3.4 GHz). The Core i7-870 uses the Lynnfield (2009−2010) architecture (45 nm), while the Core i7-13700K uses Raptor Lake, Raptor Cove, Gracemont (2022) (Intel 7 nm). In PassMark, the Core i7-870 scores 3,164 against the Core i7-13700K's 45,784 — a 174.1% lead for the Core i7-13700K. Geekbench 6 single-core — the metric most relevant to gaming — records 476 vs 2,846, a 142.7% lead for the Core i7-13700K that directly translates to higher frame rates. Multi-core Geekbench: 1,541 vs 18,980 (170% advantage for the Core i7-13700K). L3 cache: 8 MB (total) on the Core i7-870 vs 30 MB (total) on the Core i7-13700K.

The Core i7-870 uses the LGA1156 socket (PCIe 2.0), while the Core i7-13700K uses LGA1700 (PCIe 5.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR3-1333 on the Core i7-870 versus DDR5-5600 on the Core i7-13700K — the Core i7-13700K supports 50% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Core i7-13700K supports up to 192 GB of RAM compared to 16 GB — 169.2% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 16 (Core i7-870) vs 20 (Core i7-13700K) — the Core i7-13700K offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: P55,H55,H57,Q57 (Core i7-870) and Intel Z790,Intel H770,Intel B760,Intel Z690,Intel H670,Intel B660,Intel H610 (Core i7-13700K).

Only the Core i7-13700K has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Virtualization support: VT-x, VT-d (Core i7-870) vs true (Core i7-13700K). The Core i7-13700K includes integrated graphics (Intel UHD Graphics 770), while the Core i7-870 requires a dedicated GPU. Primary use case: Core i7-870 targets Legacy Desktop. Direct competitor: Core i7-13700K rivals Ryzen 9 7900X.

The Core i7-870 launched at $300 MSRP, while the Core i7-13700K debuted at $409. At current prices ($80 vs $400), the Core i7-870 is $320 cheaper. In terms of value (PassMark points per dollar), the Core i7-870 delivers 39.5 pts/$ vs 114.5 pts/$ for the Core i7-13700K — making the Core i7-13700K the 97.3% better value option.