Upgrading to 3900x, 3000Mhz Ram ok?
- Thread starter ImMrChris
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Deleted member 209350
Deleted member 209350
Zen2 works better with higher speed RAM. I believe I saw somewhere that the sweet spot for optimal performance was at 3600mhz, so it may be worthwhile for you to go for that.
Caporegime
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There are some decent gains to be had upto the max you can run, which is around 3800mhz with the infinity fabric at the same speed.
3000mhz will work fine but I'd be tempted to overclock it to get a little more out of it.
I wouldn't upgrade the RAM initially.
Soldato
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£200 is a lot but there will be a difference in performance from 3000MHz to 3600MHz.
If it's not critical then probably just save the cash.
If it's not critical then probably just save the cash.
Deleted member 209350
Deleted member 209350
Zen2 definitely performs better with higher RAM speed, so it might be worth checking some comparisons online if you can find any to see just how much difference it can make. Depends on how much you value the extra performance, but I'd assume if you werown a chip like the 3900x then performance is a priority so its worth a shout in my opinion.
Caporegime
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If his existing RAM clocks well you might get enough to avoid upgrading.
Deleted member 209350
Deleted member 209350
Thanks guys! looks like another £200 cost to the build then
If you can overclock your current kit to 3600mhz then you might not even need to spend the extra on new ram!
Deleted member 209350
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I'll give it a go but not hopeful
if the base is 3000, might be able to get it past 3200 if the kits good!
Good luck though
good point! it's the CAS 15 ram too still around £140 new for 2 x 16Gb CMK32GX4M2B3000C15 gotta be worth £100 of anyones money i guess
EDIT: £115 on Overclockers for similar ram so probably more like £80 then or less
If its C15 3000MHz, it should absolutely run 3200MHz 16-18-18-36, give it a go, if it passes then try 17-19-19-42 at 3600MHz, if that passes then start working on tighter timings, but I think you will achieve at least 3200MHz for sure. 
Saw a review the other day of zen2 with 2400mhz but the infinity fabric speed clocked separately to 1800mhz (I believe) and the performance to having 3600 RAM speed was almost identical.
If your mother board supports that I would just do that with your 3000mhz RAM.
If your mother board supports that I would just do that with your 3000mhz RAM.
Did you use the Ryzen ram calculator? I built up a 2600 system the other day and just punched in the numbers for 3400 cl14 and it worked straight away. It's quite a lot of settings to change but it's very exact changing all sort of settings I've never heard of.
I did yes but I couldn’t even find half the settings
I've just noticed that this whole thread is just today. Are you trying to overclock the RAM on your 6700k system to see what it can do first before deciding if you need new ram for a 3900x?
that’s pretty much it yes it was just a thought as I could buy other upgrades instead