Core i7-13700K vs A8-3870K

The Core i7-13700K packs 16 cores / 24 threads, while the A8-3870K offers 4 cores / 4 threads — the Core i7-13700K has 12 more cores. Boost clocks reach 5.4 GHz on the Core i7-13700K versus 3 GHz on the A8-3870K — a 57.1% clock advantage for the Core i7-13700K (base: 3.4 GHz vs 3 GHz). The Core i7-13700K uses the Raptor Lake, Raptor Cove, Gracemont (2022) architecture (Intel 7 nm), while the A8-3870K uses Llano (2011−2012) (32 nm). In PassMark, the Core i7-13700K scores 45,784 against the A8-3870K's 2,360 — a 180.4% lead for the Core i7-13700K. Geekbench 6 single-core — the metric most relevant to gaming — records 2,846 vs 380, a 152.9% lead for the Core i7-13700K that directly translates to higher frame rates. L3 cache: 30 MB (total) on the Core i7-13700K vs 0 kB on the A8-3870K.

The Core i7-13700K uses the LGA1700 socket (PCIe 5.0), while the A8-3870K uses FM1 (PCIe 2.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR5-5600 on the Core i7-13700K versus DDR3-1866 on the A8-3870K — 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 32 GB — 142.9% more capacity for professional workloads. Both feature 2-channel memory with ECC support. Both provide 20 PCIe lanes. Chipset compatibility: Intel Z790,Intel H770,Intel B760,Intel Z690,Intel H670,Intel B660,Intel H610 (Core i7-13700K) and A55,A75 (A8-3870K).

Both processors feature an unlocked multiplier for overclocking. Virtualization support: true (Core i7-13700K) vs AMD-V (A8-3870K). Both include integrated graphics — Intel UHD Graphics 770 (Core i7-13700K) and Radeon HD 6550D (A8-3870K) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: A8-3870K targets Budget Gaming Desktop. Direct competitor: Core i7-13700K rivals Ryzen 9 7900X; A8-3870K rivals Core i3-2125.