Intel · Core Ultra 5 · 2026 · LGA1851
The Intel Core Ultra 5 250KF Plus is a desktop processor with 18 cores (6 Performance-cores and 12 Efficiency-cores), released in 2026 at an MSRP of $199. It is part of the Core Ultra 5 lineup, using the 200 Series Plus platform, and fits the LGA1851 socket. Internally, it is built on the "Arrow Lake Refresh" architecture. Only the 6 P-cores support Hyper-Threading, while the 12 E-cores handle a single thread each, together yielding 18 threads: the P-cores tackle latency-sensitive and lightly-threaded work, while the E-cores take on background and highly parallel tasks. The Core Ultra 5 250KF Plus has a base clock of 4 GHz and can boost up to 5.3 GHz depending on workload and thermal headroom. Intel manufactures the "Arrow Lake Refresh" silicon on a Intel 3 process node. The multiplier is unlocked, making overclocking straightforward. This processor supports DDR5 memory. With a TDP of 125W, the Core Ultra 5 250KF Plus sits in a typical power envelope for a modern desktop CPU. This processor has no integrated graphics — a discrete GPU is required. The cache hierarchy consists of 80KB/core of L1, 30MB of L2, and 30MB of L3 cache.
KF variant — no integrated graphics. Otherwise identical to 250K Plus. Listed at retail for under $200.
| Brand | Intel |
|---|---|
| Family | Core Ultra 5 |
| Series | 200 Series Plus |
| Architecture | Arrow Lake Refresh |
| Type | Desktop |
| Launch year | 2026 |
| Cores | 18 (6P + 12E) |
| Threads | 18 |
| Base clock | 4 GHz |
| Boost clock | 5.3 GHz |
| L1 cache | 80KB/core |
| L2 cache | 30MB |
| L3 cache | 30MB |
| TDP | 125W |
| Socket | LGA1851 |
| Process | Intel 3 |
| Memory type | DDR5 |
| Integrated graphics | None |
| Chipsets | Z890, B860, H810 |
| Launch MSRP | $199 |
| Part number | BX80768250KF |
| OEM / tray part number | AT807683B9B4887 |