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MHNET2022-03-31 13:50:32
Power Supply
MHNET, 2022-03-31 13:50:32

Is it possible to power two Xeon e5-2666 processors from one 4+4 pin power supply connector?

Hello, I want to power two Xeon e5-2666 processors from one power supply - it has one connector to power the processor in 4 + 4 pin, is it possible to power two Xeon e5-2666 processors from this connector (4 pin each), will it burn something from this?

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3 answer(s)
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hint000, 2022-03-31
@hint000

Still, it's not entirely clear what kind of processors you have. There is no such Xeon e5-2666 in the official lists (on the Intel website).
https://ark.intel.com/content/www/ru/ru/ark/produc...
The most similar names are:
E5-2660 (TDP 95W)
E5-2665 (TDP 115W)
E5-2667 (TDP 130W)
E5-2660V2 (TDP 95W)
E5-2667V2 (TDP 130W)
E5-2660V3 (TDP 105W)
E5-2667V3 (TDP 135W)
E5-2660V4 (TDP 105W)
E5-2667V4 (TDP 135W)
As you can see, even the two most cold ones have a TDP of 95W.
Look at the markings on your power supply, how much power it can deliver through the 12V lines.
In the picture for example 12V * 18A = 216W For example, this is enough for two TDP 95W processors and two hard drives, provided that there is no discrete video card. If we take processors with at least a TDP of 105W, then with such a PSU there will be no power left even for hard drives. Well, let's remember the traditional recommendations that the PSU power should be chosen with a margin of 20%..30%, there is no margin at all, so it's hard to talk about the stability of the system. I don’t know what kind of PSU you have, see its characteristics for yourself.
This is only in terms of PSU power. Now about the wires. Burn something will not burn, you can try. But a small number of wires and contacts with which they are connected to the board can cause a noticeable voltage drop (for example, under a heavy load, the voltage on the 12V line will drop to 10.5V), this can lead to a deadlock (it can only be cured by turning off the power) or to a sudden shutdown of the computer . But nothing should burn. In short, for tests, you can try to connect as is, but I do not advise you to seriously work in this mode.
624590182c058884149341.png

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Ricardo Sanchez, 2022-03-31
@yakovlev_13

can. but it is not exactly

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Dmitry, 2022-03-31
@Mikeoldfield

In theory it is possible, but there will be excessive loads on the tracks. They can burn out.

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