X99 5820k RAM and bclk/CPU strap

Bluntwrapped · 14 Mar 2017 at 15:53

Hey guys. I'm just about to build a x99 based workstation. This is my first chance to have a play with the 2011 platform.

Am I right in saying anything above 2400mhz RAM frequency means the BCLK will automatically adjust to 125 up from the base 100?

The guides I've found so far are somewhat lacking or go on the assumption everyone is running their RAM at 3000mhz.

I have my eye on the 32gb Corsair CL14 2400mhz kit.

Is it worth going for a kit faster than 2400mhz or will the difference and hassle in regards to the above strap stability make it not worth it? The timings on the 2400mhz kit seem pretty good.

I want to do some overclocking on the CPU without worrying about RAM stability.

The main function of the workstation will be Adobe CC - mainly AE.

Thanks

Disco_P · 14 Mar 2017 at 17:30

I use 2666Mhz ram and that works fine with 100 Strap. I don't know anything about RAM performance or timings though, I just bought the cheapest

Bluntwrapped · 14 Mar 2017 at 18:04

Ah cheers so I guess depending on the chip some may run stable on the 100 strap while others need 125?

Are you using a 5820k too?

Disco_P · 14 Mar 2017 at 20:39

Yeah 5820K. I set my RAM to XMP then did overclocking without issue.

JamesM · 17 Mar 2017 at 16:46

I use 2666 memory too, the kit below

https://www.overclockers.co.uk/king...d-channel-kit-hx426c13pb2k4-16-my-201-ks.html

100 strap, set XMP and as above, just increased the multiplier until I got what I wanted

RSR · 17 Mar 2017 at 20:27

I was under the impression 2133, 2400, 2600, 2666 normally use a 100 BCLK and 2800 & 3000 use a 125 BCK.

However beyond that I believe 3200 uses a 100 BCLK but the high speed ram can be problematic depending on platform.

Silent_Scone · 18 Mar 2017 at 08:07

Certain dividers work better on 1.25 but that's not to say you have to use them on either, varies from CPU to CPU.

Above 2400, 3200 is still the strongest ratio on 100 strap.