Question ram choice

Apr 11, 2019
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hello,

i got 8gb ram 2400mhz. is there a difference between 3000mhz and 2400mhz and should i change it if there is?
 
Apr 11, 2019
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For a skylake cpu, 2400 is fine you'll really not see any bonus going faster, just costs more.

If anything, I'd bump that 8Gb to 16Gb at 2400-3200, whichever is cheapest (on sale)
one question, can I buy a 3200 another 8gb stick from a different brand or does that mess things up?
 

Karadjgne

Titan
Herald
Ram will run at the slowest speed. So if you mix a 3200 with a 2400, both will run at 2400.

To be honest, mixing ram that came from 2 different kits is never a good idea. Even if the ram is exactly identical vendor, model, speed, color etc. You only see the primary timings, the 15-16-15-39 etc, what you don't see is the 40+ secondary and tertiary timings. All it takes is one to be slightly off, and the whole thing either requires voltage bumps, loosening timings even dropping speeds to get both sticks to play nice. Sometimes even all that doesn't work and both won't work at all together. So it's always advised to buy all the ram in a single kit, a single package, not seperates, as ram is tested by the factory and have certified the ram works.

If you want 2x8Gb, you should sell the 1x8Gb you own, and buy a 2x8Gb kit in 2400/2666 or whatever you like.
 
Reactions: Mandark

Karadjgne

Titan
Herald
Nah, any 200 series can run 2400, the only restriction being with non-z 100 series. With a K cpu, his bios will allow xmp upto 2400 even if default on skylake MC is 2133MHz. On the Z boards, it'll depend on the board as to what's recognized above 2133MHz.
 

Karadjgne

Titan
Herald
You might be right. Never actually run into this exact situation. Usually ram speeds are dictated by the cpu, skylake is 2133 and kabylake is 2400 default. But thats default, xmp/manual oc will change that upto the board allowed speeds and ram speed. The board will recognise 2400 or 2133.
* To support 2400 MHz or XMP memory, you must install a 7th generation processor.
That would make sense on a non-K, but a Kcpu can support higher speeds in the mc.

Not sure. Kinda perplexing.
 

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