Talk:LGA 3647

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Association square/narrow[edit]

I assume P0 is square and P1 is narrow. Can someone add this to the article and reference this to some official naming reference?

Update: I just added the terms (narrow and square) to the article. But maybe someone can add a reliable reference that shows that P0 is square or that P1 is narrow? Thanks.

I know it's correct, because I have an LGA-3647 motherboard where in the documentation it says it's a P0 socket and the cover lid of the CPU has "Square" written on it.

--80.219.27.211 (talk) 10:54, 17 November 2020 (UTC)[reply]

YOU ARE WRONG ON THIS!

(and a sample of 1 unit you base your information is not sufficient)

The P0 and P1 is the keying of the socket base where the pins are, and that must be matched with the notches on the CPU itself, otherwise it will not fit - in order to prevent populating a processor which is not supported by the board circuitry and BIOS. Also, the P0 and P1 have a little bit difference in the heatsink mounting screws (both the screw pitch changes, and the guiding pins are mirrored!), which is presumably made to support a significant difference in TDP's of the regular CPU's vs the Phi-X200 (approximately 135W vs 230W). It is definitely not related to the narrow/square ILM option, which is a completely different thing. Most P1 Xeon Phi systems had a narrow-like heatsink mounting, while the normal P0 processor line comes in both narrow and square fashion, based on what model of the board is (may have a slight relation to single/dual socket choice). I do own a 7250phi/P1 system, for which I have adopted the P0 components, and it was a pain.

78.108.102.159 (talk) 20:41, 14 February 2021 (UTC)[reply]