2440 mhz ram with i5 4670k

Wojchech Kowalski · Jun 17, 2014

I am confused what ram to choose for my
CPU and motherboard
-I5 -4670k
-Asus Z-87-A

I hesitate between G.Skill TridentX DDR3 2x4GB 2400MHz CL10 and G.Skill DDR3 2x4GB 1600MHZ RIPJAWS X CL9

My friend told me that I should choose 1600mhz because it runs at 1.5V which is recommended for the CPU.
From the other side I read that 2400mhz is fine and should be slightly better then 1600mhz. The difference in price between them is ~10$, so if 2400mhz won't damage CPU I rather choose them over "ripjaws".
I don't know if this matters but I am not going to overclock CPU or memory.

What would you recommend and why?

Pibee · Jun 17, 2014

Your MB supports: 4 x DIMM, Max. 32GB, DDR3 3000(O.C.)/2933(O.C.)/2800(O.C.)/2666(O.C.)/2600(O.C.)/2500(O.C.)/2400(O.C.)/2200(O.C.)/2133(O.C.)/2000(O.C.)/1866(O.C.)/1800(O.C.)/1600/1333 MHz Non-ECC, Un-buffered Memory

The 2400mhz will be fine however you'll have to enable the XMP when installed otherwise they will run at 1600... enjoy

SethJPC · Jun 17, 2014

Unfortunately Haswell only supports native speeds of 1333 and 1600mhz meaning it will most probably downclock your RAM down to 1600mhz, as before mentioned you will have to enable xmp (anything above 1600mhz is considered overclocking).
What voltage do the Trident sticks run at? If they are over 1.5v your friend is right but it will not damage the CPU, the RAM will be lowered in voltage until it is 1.5v thus reducing its speed too, 1600mhz RAM is fine for the average user.

Tradesman1 · Jun 17, 2014

2400 is fine as is 1.65 and the Tridents are great sticks, I've got a 32GB set of the 2400 sticks (Tridents in my Z97 right now, and have the 2666 Tridents in my Z87 (both with 4770Ks (waiting on the 46-4790K release for my Z97 rig) - the Z87 is in sig

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