Using RAM with faster speed than motherboard supports

Darth_Dewlap · Feb 28, 2017

I'm looking at buying an Asus Strix B250F motherboard that supports max RAM speed of 2400Mhz combined with ddr4 Corsairs Vengeance LED that runs at 2666Mhz.

Will there be any issues? Is it worth spending a little extra to grab a motherboard that supports at least 2666Mhz?

DRagor · Feb 28, 2017

Faster memory will run at the mobo's maximum. Note that you need Kaby Lake CPU for that 2400, if you have Sky Lake your maximum is 2133.
To support faster memory you need mobo with Z270 chipset. I would not say a price difference between B250 and Z270 are small, but maybe at your country they are. Anyway, the performance difference between 2666 and 2400 memory is small, so probably not worth it IMO. Unless you have other reason to get Z270 mobo.

Mikeandike · Feb 28, 2017

on B series boards, the ram will run at the maximum the board itself supports. Z series boards will utilize the higher speed but will consider the ram speed an overclock speed. However, if you aren't concerned about getting that little extra bang out from your ram, you are fine, like I said, the ram will simply run at the mobo's max speed.

Darth_Dewlap · Feb 28, 2017

Thanks for your replies. I'll be getting a Kaby Lake cpu, so that's no issue. In New Zealand the prices are quite a bit higher than they are in the US so the extra cost to upgrade to a z270 for that extra 200Mhz is hardly worth it.

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