Some basic 5820K questions.

Minstadave

Minstadave

Minstadave

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Finally bitten the bullet and moving from a 4.8Ghz 2700k to a 4.6Ghz capable 5820K as Lightroom was bogging down at times. The IPC gain from Sandy to Haswell should largely negate the loss of CPU speed and the extra cores will be useful.

I've picked up a Raijintek Tisis for cooling - looked like a good balance of price versus performance and noise:

https://www.overclockers.co.uk/raijintek-tisis-dual-element-extreme-cpu-cooler-hs-008-rt.html

Just got some quick questions if anyone could get me up to date:

DDR4 speeds - I'll be using some 2400Mhz DDR4 in 4x4GB config, does memory speed matter much on X99 for gaming/system performance, as 2400Mhz looks slow compared with what's out there but I suspect quad channel means there's plenty of bandwidth.

Uncore clocking - My board doesn't have an OC socket so I'll be limited with how far I can push this, does it actually make much difference?

Overclocking the CPU is still pushing up the multi and leaving the bus speed alone?
 
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1). I've got a 5820K with 8 sticks of 4GB running at 2666MHz quite happily. I can't say I've noticed any difference bumping it up from 2400MHz to 2666MHz at all. Like you say, I believe the quad channel means it has more than enough bandwidth anyway and I also believe it's quite a bit more difficult to get RAM at much more than 2666MHz on Haswell-E, though I may be wrong. I certainly couldn't manage it even with 4 sticks, but since it made no difference to performance from 2400->2666 I wasn't too bothered.

2). I don't think the OC socket really makes much of a difference to be honest. I had an MSI X99A which doesn't have an OC socket and I now have an Asus X99-A which does. The same CPU reached the same speeds in both motherboards anyway. I guess different CPUs may be affected in different ways but for me, it made literally no difference at all.

3). That's the easiest way. You can change the FSB from 100MHz to 125MHz or 166MHz, though I think some boards/CPUs have a harder time with 166MHz. Mine had no problems with 125MHz but I wasn't able to get more CPU speed so I just left it on 100x44.
 
Minstadave said:
That'll be really helpful as I'm on an MSI board. Thank you :)

What cooling are you using for 4.7?
Click to expand...

I imagine most settings are the same between MSI and Asus so yeah it gives a good basic setup :)

Mine is watercooled. A loop with a 480mm Radiator and a GTX 1080 within the same loop.

Alternatively Jay2cents has good videos which might help you as you tweak things.

 
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Oops you're right I thought the first link was for an MSI board, you're right they use an Asus but looks pretty similar.

That video is even better though! Should keep me busy this evening.

Just found the socket 2011 fittings for my ancient £30 refurb H100 - will give that a try and return the air cooler if it runs well. Will save me having to dismantle my old system.
 
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I have overclocked my 5820K on an MSI X99S Krait and the procedure was quite simple as a vast majority of settings can be left on auto. I think the only ones that needed changing were multiplier (use dynamic mode to allow downclocking at idle), turn on XMP, Vcin to 1.9v, vcore to something under 1.3v, adaptive volts and then test for stability.
 
Disco_P said:
I have overclocked my 5820K on an MSI X99S Krait and the procedure was quite simple as a vast majority of settings can be left on auto. I think the only ones that needed changing were multiplier (use dynamic mode to allow downclocking at idle), turn on XMP, Vcin to 1.9v, vcore to something under 1.3v, adaptive volts and then test for stability.
Click to expand...

Awesome, thanks very much!
 
Well I'm up and running at 4.4ghz and 1.3V to see how the temps are before pushing up to 4.6.

My old Corsair H100 fits perfectly so if temps are OK I'll return the Raijintek.

Now to decide if an NVME drive is tempting me.
 
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