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what happens if you put 2 diffrent cpus in a server?

adarw
By adarw
in CPUs, Motherboards, and Memory
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Posted

so lets say i have a server with 2 sockets (i dont) and i wanted to put 2 diffrent xeons in it, would it work? 

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No. They need to be the same model, and for some applications you'd want to match the steppings as well. 

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1 minute ago, BondiBlue said:

No. They need to be the same model, and for some applications you'd want to match the steppings as well. 

what happens if i put 2 diffrent xeon in tho?

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Just now, adarw said:

what happens if i put 2 diffrent xeon in tho?

It won't work. 

Phobos: AMD Ryzen 7 2700, 16GB 3000MHz DDR4, ASRock B450 Steel Legend, 8GB Nvidia GeForce RTX 2070, 2GB Nvidia GeForce GT 1030, 1TB Samsung SSD 980, 450W Corsair CXM, Corsair Carbide 175R, Windows 10 Pro

 

Polaris: Intel Xeon E5-2697 v2, 32GB 1600MHz DDR3, ASRock X79 Extreme6, 12GB Nvidia GeForce RTX 3080, 6GB Nvidia GeForce GTX 1660 Ti, 1TB Crucial MX500, 750W Corsair RM750, Antec SX635, Windows 10 Pro

 

Pluto: Intel Core i7-2600, 32GB 1600MHz DDR3, ASUS P8Z68-V, 4GB XFX AMD Radeon RX 570, 8GB ASUS AMD Radeon RX 570, 1TB Samsung 860 EVO, 3TB Seagate BarraCuda, 750W EVGA BQ, Fractal Design Focus G, Windows 10 Pro for Workstations

 

York (NAS): Intel Core i5-2400, 16GB 1600MHz DDR3, HP Compaq OEM, 240GB Kingston V300 (boot), 3x2TB Seagate BarraCuda, 320W HP PSU, HP Compaq 6200 Pro, TrueNAS CORE (12.0)

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In the past, some motherboards used to work with different cpus as long as their were from the same series/family/generation .. basically the difference being just cpu clocks and cache memory or something like that.  

But even then, it wasn't recommended, you want pairs of same cpu model.

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Assuming the board supported it, it would make more sense to just put in the fastest/newest CPU, and leave the other slot unoccupied, or use a socket terminator in the other socket, whichever the board required, and run it with one CPU. This would get you infinitely more performance than running mismatched CPU's.

 

I suspect, with Big cores/Little cores becoming a thing, that mismatched CPU's might be an actual thing in the future, but this probably isn't going to be the case.

"Don't fall down the hole!" ~James, 2022

 

"If you have a monitor, look at that monitor with your eyeballs." ~ Jake, 2022

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