Pentium G3258 vs Core i7-9700K

The Pentium G3258 packs 2 cores / 2 threads, while the Core i7-9700K offers 8 cores / 8 threads — the Core i7-9700K has 6 more cores. Boost clocks reach 3.2 GHz on the Pentium G3258 versus 4.9 GHz on the Core i7-9700K — a 42% clock advantage for the Core i7-9700K (base: 3.2 GHz vs 3.6 GHz). The Pentium G3258 uses the Haswell (2013−2015) architecture (22 nm), while the Core i7-9700K uses Coffee Lake-R (2018−2019) (14 nm). In PassMark, the Pentium G3258 scores 2,063 against the Core i7-9700K's 14,397 — a 149.9% lead for the Core i7-9700K. L3 cache: 3 MB (total) on the Pentium G3258 vs 12 MB (total) on the Core i7-9700K.

The Pentium G3258 uses the LGA1150 socket (PCIe 3.0), while the Core i7-9700K uses LGA1151 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR3-1333 on the Pentium G3258 versus DDR4-2666 on the Core i7-9700K — the Core i7-9700K supports 28.6% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Core i7-9700K 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. Both provide 16 PCIe lanes.

Both processors feature an unlocked multiplier for overclocking. Virtualization support: VT-x (Pentium G3258) vs VT-x, VT-d (Core i7-9700K). Both include integrated graphics — HD Graphics (Pentium G3258) and UHD Graphics 630 (Core i7-9700K) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Pentium G3258 targets Desktop, Core i7-9700K targets Desktop.

The Pentium G3258 launched at $75 MSRP, while the Core i7-9700K debuted at $385. At current prices ($72 vs $200), the Pentium G3258 is $128 cheaper. In terms of value (PassMark points per dollar), the Pentium G3258 delivers 28.7 pts/$ vs 72.0 pts/$ for the Core i7-9700K — making the Core i7-9700K the 86.1% better value option.