DDR4 Memory Low Timings Vs High

tolagarf

Member
So I've noticed that new DDR4 memory modules are being sold now with very fast CL timings, all the way down to 2400 MHz CL10 @ 1.35v (Corsair) and I'm wondering if there's any real difference between CL10 to CL15 when it comes to gaming.

My current modules are Corsair 2800 MHz CL16 @ 1.25v, and there is no way in hell these will run either 2666 or 2800 MHz on a 100 MHz BCLK. 2400 MHz CL15 they do fine at stock volts. If I want them to run 2800 MHz I'm forced to run a 125 MHz strap with a 127.1 MHz BCLK (yes this is weird, but the BIOS insist on this), but this will also increase my CPU voltage to 1.2v on stock speeds which is freaking insane. I did manage to get it down to about 0.944v on adaptive voltage. Never been able to get it completely stable with this setting though as I'll get random crashes, but not hard reboots.

Hence I was considering buying those 2400 MHz CL10 modules to get more FPS during gaming, but I'm just not sold on it will actually do a difference at all :)
 
Timings do not make much of a difference really, programs are make to not care much about the extra latency really, almost everything prefers the additional bandwidth.

What is your motherboard and CPU, as a lot of skylake motherboards have issues getting faster memory to run well without a BIOS update.
 
Oh sorry I should have listed my specs:

i7 5930K
ASUS Sabertooth X99 BIOS v1901
Corsair DDR4 4x4 GB CMK16GX4M4A2800C16

I haven't updated the BIOS version in quite some time though, as I've been reading bad things in general about the lastest versions.
 
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