A4-4000 vs Core i5-10400F

The A4-4000 packs 2 cores / 2 threads, while the Core i5-10400F offers 6 cores / 12 threads — the Core i5-10400F has 4 more cores. Boost clocks reach 3.2 GHz on the A4-4000 versus 4.3 GHz on the Core i5-10400F — a 29.3% clock advantage for the Core i5-10400F (base: 3 GHz vs 2.9 GHz). The A4-4000 uses the Richland (2013−2014) architecture (32 nm), while the Core i5-10400F uses Comet Lake (2020−2025) (14 nm). In PassMark, the A4-4000 scores 1,152 against the Core i5-10400F's 13,029 — a 167.5% lead for the Core i5-10400F. Geekbench 6 single-core — the metric most relevant to gaming — records 348 vs 1,454, a 122.8% lead for the Core i5-10400F that directly translates to higher frame rates. L3 cache: 0 kB on the A4-4000 vs 12 MB (total) on the Core i5-10400F.

The A4-4000 uses the FM2 socket (PCIe 3.0), while the Core i5-10400F uses LGA1200 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR3-1333 on the A4-4000 versus DDR4-2666 on the Core i5-10400F — the Core i5-10400F supports 28.6% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Core i5-10400F supports up to 128 GB of RAM compared to 32 GB — 120% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 8 (A4-4000) vs 16 (Core i5-10400F) — the Core i5-10400F offers 8 more lanes for additional GPUs or NVMe drives. Chipset compatibility: A55,A75,A85X,A88X (A4-4000) and H410,B460,H470,Z490,H510,B560,H570,Z590 (Core i5-10400F).

Neither processor supports overclocking. Virtualization support: AMD-V (A4-4000) vs VT-x, VT-d (Core i5-10400F). The A4-4000 includes integrated graphics (Radeon HD 7480D), while the Core i5-10400F requires a dedicated GPU. Primary use case: A4-4000 targets Budget Desktop, Core i5-10400F targets Gaming. Direct competitor: A4-4000 rivals Celeron G1610; Core i5-10400F rivals Ryzen 5 3600.