Celeron 4305U vs Core i7-9700K

The Celeron 4305U 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 2.2 GHz on the Celeron 4305U versus 4.9 GHz on the Core i7-9700K — a 76.1% clock advantage for the Core i7-9700K (base: 2.2 GHz vs 3.6 GHz). The Celeron 4305U uses the Whiskey Lake-U (2018−2019) architecture (14 nm), while the Core i7-9700K uses Coffee Lake-R (2018−2019) (14 nm). In PassMark, the Celeron 4305U scores 1,562 against the Core i7-9700K's 14,397 — a 160.8% lead for the Core i7-9700K. L3 cache: 2 MB (total) on the Celeron 4305U vs 12 MB (total) on the Core i7-9700K.

The Celeron 4305U uses the FCBGA1528 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 2133 on the Celeron 4305U versus DDR4-2666 on the Core i7-9700K — the Celeron 4305U supports 199.3% 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 64 — 66.7% more capacity for professional workloads. Both feature 2-channel memory with ECC support. Both provide 16 PCIe lanes. Chipset compatibility: Whiskey Lake-U (Celeron 4305U) and Intel 300 series (Core i7-9700K).

Only the Core i7-9700K has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Virtualization support: true (Celeron 4305U) vs VT-x, VT-d (Core i7-9700K). Both include integrated graphics — Intel UHD Graphics 610 (Celeron 4305U) and UHD Graphics 630 (Core i7-9700K) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Celeron 4305U targets Budget, Core i7-9700K targets Desktop. Direct competitor: Celeron 4305U rivals Pentium Gold 5405U.

The Celeron 4305U launched at $107 MSRP, while the Core i7-9700K debuted at $385.