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Motherboard VRM Check

Intel socket

LGA1851 motherboards and processors

LGA1851 covers 13 processors and 14 motherboards in this database, across the B860, Z890 chipsets and from ASUS. Memory is DDR5 only, and boards run from roughly $169 to $649.

Processors
13
Motherboards
14
Heaviest draw
245 W
Intel Core Ultra 9 285K
Capacity range
417–2571 W

Power delivery on LGA1851

The heaviest LGA1851 processor here is the Intel Core Ultra 9 285K at 245 W sustained, which is the number every board on this page is measured against. A board's socket tells you the chip will fit; it says nothing about whether the power stages behind that socket can feed it for ten minutes without heating up.

The useful question on LGA1851 is not which chipset to buy but how many Vcore power stages the specific board has and how big its heatsinks are. Two boards on the same chipset, twenty dollars apart, routinely differ by a factor of two in sustained core current, and that difference is what decides whether your processor holds its clocks.

LGA1851 chipsets

LGA1851 boards by sustained capacity

Best LGA1851 boards

LGA1851 processors by sustained draw

Sorted by the number that decides whether a board copes: package power in a ten-minute all-core load, not the TDP on the box.