i9 9900K and Corsair Vengeance RGB PRO DDR4 2x8GB

robert140377

robert140377

robert140377

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Joined
16 May 2019
Posts
3
Hello good people.
I've built my first PC and looks like my RAM is too fast for the CPU.
I know you can overclock stuff to make it work, but I have no experience
in overclocking and don't wanna fry anything.
So my CPU is Intel Core i9-9900K with DDR 4 2x8GB 4266 MHz (2 kits - 4 bricks all together)
After I activated XMP in Bios, the computer was unstable and crashing.
From what I read and if I understood correctly - the RAM was operating at too
fast frequency for the CPU to handle it (?)
After I deactivated XMP, computer runs very well - but I'd like to get more performance
out of the computer.
Would you guys help me and give me some guidance how can I overclock this thing
and have stable machine at the same time ?

MSI Z390 MEG Godlike
i9-9900K
Corsair Vengeance 2x8 4266 MHz (2 kits)
MSI 2080Ti Lightnig
Asus ROG Swift PG 279Q 144Hz 1440p
 
You have 32GB of RAM then? Have you tried with just one kit to see if you can get them stable? Two kits I believe will add stress to the IMC on the CPU and generally requires more voltage. Is the CPU overclocked?
 
Hey Kung- fu.
So I did some research and find out that CPU shopuld be OC-ed first - correct ? (And it isn't)
Yeah I have 32 GB of RAM - I work as a pro photographer so I need that juice ;)
And yeah - after activating the XMP I didn't check if voltage was increased or not, but on Corsairs website I checked specs and
that 4266 MHz speed was tested at 1.4 V. So probably 2 things I didn't do correctly:
1. CPU runs on default speed
2. RAM probably didn't have enough voltage.
Please DO correct me if I'm misunderstanding anything.
 
I don't really know much about clocking newer intel CPU's, all I know is they can do those kinds of memory speeds, but again a lot is down to luck. CPU probably needs more volts, but may even need to reduce ram speeds down to sub 4000 to start.
 
not sure if @CorsairChris could lend any info at all ?

believe you were running 4 dimms on 8 Pack 4000z on Aorus Ultra ?

have only seen the Meg and Xtreme run 4 sticks at 4000hz, thats a lot of stress on the IMC with 4 dimms and an overclocked CPU?
 
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