Core Ultra 5 135U vs Core i5-11500B

The Core Ultra 5 135U packs 12 cores / 14 threads, while the Core i5-11500B offers 6 cores / 12 threads — the Core Ultra 5 135U has 6 more cores. Boost clocks reach 4.4 GHz on the Core Ultra 5 135U versus 4.6 GHz on the Core i5-11500B — a 4.4% clock advantage for the Core i5-11500B (base: 1.6 GHz vs 3.3 GHz). The Core Ultra 5 135U uses the Meteor Lake-P (2023) architecture (7 nm), while the Core i5-11500B uses Tiger Lake-H (2021) (10 nm). In PassMark, the Core Ultra 5 135U scores 16,900 against the Core i5-11500B's 17,075 — a 1% lead for the Core i5-11500B. L3 cache: 12 MB (total) on the Core Ultra 5 135U vs 12 MB on the Core i5-11500B.

The Core Ultra 5 135U uses the FCBGA2049 socket (PCIe 5.0), while the Core i5-11500B uses FCBGA1787 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR5-5600 on the Core Ultra 5 135U versus DDR4-3200 on the Core i5-11500B — the Core Ultra 5 135U supports 22.2% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Core i5-11500B supports up to 128 GB of RAM compared to 96 GB — 28.6% more capacity for professional workloads. Both feature 2-channel memory with ECC support. Both provide 20 PCIe lanes.

Only the Core i5-11500B supports AVX-512 instructions — important for machine learning and scientific applications. Virtualization support: Yes (Core Ultra 5 135U) vs VT-x, VT-d (Core i5-11500B). Both include integrated graphics — Intel Arc Graphics (Core Ultra 5 135U) and UHD Graphics 32EU (Core i5-11500B) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Core i5-11500B targets Desktop / Mini PC.