Memory to 4000mhz

For the life of me I cannot get my 2 x 16 gb sticks of Trident Z CL19 4000mhz to run @ XMP 4000mhz, the best I can get is 3700mhz @ CL19.

Bios is the latest 1002.

I've tried starting from scratch (no cpu overclock) after a clear cmos and set xmp and manuall timings then worked my way up to 3700mhz but anything above this speed and the pc bootloops (doesnt even try to load windows), I think its doing memory training but fails and after a couple of restarts it asks me to press F1 to load the bios. I also raised voltage on the sticks to 1.4v and vccio / sa to 1.225 but doesnt do a thing.

So with the sticks @ 3700mhz I have tightened the timings to CL16-16-16-36 (tRFC at 440) and these pass all benchmarks, H.265 benchmark is what I use for stability testing, if I try CL15 then I get a blue screen 30 seconds into the run.

Thinking that I may have a weak CPU I got a mate to test my cpu and memory on his rig and it has no issue booting with XMP 4000mhz -ROG Maximus X Code (bios 1602).

So can anybody help me get higher bandwidth ?

The memory kit I have is on the Asus QVL list for my Z370-I tested @4000mhz (second to last on the 4000mhz list near the bottom) : http://dlcdnet.asus.com/pub/ASUS/mb...3.1073485599.1532099243-1666527368.1532099243

Thanks in advance guys

P.S. I know higher bandwidth can become pointless because of the looser timings, but I would at least like to try and see how they perform at the advertised xmp settings...

If you're CPU can't hit it then I don't think there's much more you can do outside of raising the voltage for the memory controller.

NeverBackDown said:

If you're CPU can't hit it then I don't think there's much more you can do outside of raising the voltage for the memory controller.

Click to expand...

Thats what my issue is though, the cpu and memory can hit it when I stick them in a friends Maximus X Code.

I managed to get to 3733 with the following timings :