2x 8GB to match old ram - or 2x 16GB Faster ram in dual rank

slunge

slunge

slunge

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Figured I would post this seperately rather than invading someone elses thread.

I have 2x 8GB Corsair Vengence 3000 RGB - CMR 16GX4M2C3000C15
XMP profile is 3000/15/17/17/35/52 (in order of how CPU-Z displays).

Currently running on B450 Tomahawk, with overclocked Ryzen2600 (4.2), at:
3200/C14/17/17/34/54

Based on timings ive got these down to - it may be possible to get these up to say 3600 anyway C17/18 - could just be this Ryzen 2600 holding them back.

Eveyone is aware now of this 4x single rank/ 2x Dual Rank memory from latest Ryzen 5000 reviews (which I intend to buy in Jan once Bios is out, and CPUs available).

Do I:

1) just purchase 2x identical sticks for £109 (direct from corsair cheapest, fairly expensive now...) to bump to dual rank x4 and run at existing settings where possible (clocks are fairly tight here, no guarentee new ones will run like this).

2) buy some 2x 16gb 3600/3800 ram for say £150ish - hopefully something with reasonable timings (recomendations welcome) - and sell my old ram for maybe £40 if im lucky.

3) just stay as is, lose the benifit of the Dual Rank, but use the money to upgrade to next processor up - (eg jump up to say a 3800x instead of 3600x) lose potential memory gains and deal with it.

16gb should be fine for the time being anyway capactiy wise, just keen to optimise performance gains and figure if im going to do it in Jan anyway, I may as well buy it now and benifit untill I get the new CPU.

Any recomemendations welcome.
 
Are you thinking about this just because its the latest fad to have dual ranks? As with most fads, its overrated.
If you genuinely need 32gb ram then check out Sparx thread here for the pitfalls of ordering extra sticks of Corsair memory of the same model number. The safest option is buying a new 2 x 16gb kit especially if you want to start playing about with manual timings, and this is only worth it if you have a genuine need of 32gb.

Memory overclocking between Ryzen 2000 and Ryzen 3000 is night and day. You have a good motherboard and depending on what chips are on those Corsair sticks then you can quite legitimately aim for 3800mhz. I would suggest downloading Thaiphoon burner as a start and having a look specifically which chips your memory uses (you will only use this to read your memory sticks programming - memory bios if you will). If its Micron Rev E as I suspect it may well be from your current memory tune then you aren't shackled to buying corsair memory anymore, you can look at Crucial which halves your outlay for an extra matching 2 x 8gb. Thaiphoon will also point you in the right direction for further tuning options as you can do some google-fu and read up on how others have discovered your particular brand of memory chips behave and tune up. Post up your Thaiphoon screenshot here if you would like confirmation you are reading it correctly - its fairly self explanatory though for what you are looking to find out :)
 
MrPils said:
Are you thinking about this just because its the latest fad to have dual ranks? As with most fads, its overrated.
If you genuinely need 32gb ram then check out Sparx thread here for the pitfalls of ordering extra sticks of Corsair memory of the same model number. The safest option is buying a new 2 x 16gb kit especially if you want to start playing about with manual timings, and this is only worth it if you have a genuine need of 32gb.

Memory overclocking between Ryzen 2000 and Ryzen 3000 is night and day. You have a good motherboard and depending on what chips are on those Corsair sticks then you can quite legitimately aim for 3800mhz. I would suggest downloading Thaiphoon burner as a start and having a look specifically which chips your memory uses (you will only use this to read your memory sticks programming - memory bios if you will). If its Micron Rev E as I suspect it may well be from your current memory tune then you aren't shackled to buying corsair memory anymore, you can look at Crucial which halves your outlay for an extra matching 2 x 8gb. Thaiphoon will also point you in the right direction for further tuning options as you can do some google-fu and read up on how others have discovered your particular brand of memory chips behave and tune up. Post up your Thaiphoon screenshot here if you would like confirmation you are reading it correctly - its fairly self explanatory though for what you are looking to find out :)
Click to expand...

Thanks for feedback - to be honest its partially raised by the new dual 2rank fad - yes, I kinda figured that if im going to bother going 5000 in Jan I may as well maximise what im getting.

On the thaiphoon front, I have used it previously to set this tune - along with the ryzen calc, off top of my head it is Micron E as you suggest, I will fire it back up and grab a screenshot.
 
I take it back on the micron chips..

thumb_show.php
 
Hynix AFR (A-Die). That's old and you'll struggle to find a matching set. Don't go over 1.45v with it either, thats the accepted safe limit, I have heard of it degrading it 1.5v. I have seen AFR reaching 4000mhz so 3800mhz should be within reach if you get a Ryzen 3000 chip that will do 1900mhz Infinity Fabric, but it will be tricky. 16-19-19 to 17-21-21 is the timing range you are likely to end up at if aiming for 3800mhz at 1.35v to 1.45v.

Honestly arguments can be made for replacing it, more modern chips are better suited to the higher memory frequencies cpus are capable of achieving these days. If you wanted to go to 32gb I would buy a 2 x 16gb if I had that 2 x 8gb kit. If 16gb is enough though try it first, if you manage 16-19-19 @ 3800mhz that will do just fine. AFR works fine with Command Rate 1T as well, you do not need to use Gear Down Mode so you get some performance back there too.

If you do decide to replace it to get dual ranked modern sticks do take note that you will want to buy a Samsung B-Die based kit. Micron based kits in 2 x 16gb can be single or dual ranked.
 
realistically I dont need the 32GB as it stands - I did find on corsairs site identical ram with same part number, but it could well be that its using different chips at this point.
Current settings are pretty well optimised, spent a fair bit of time in the calculator running through it all 6 months ago - that said I have never bothered to push the frequency.

I did initally have it up at 3400 on this ryzen2600 but it was unstable beyond that back then, and slower than 3200 at c14 - may be more of the CPUs fault than the ram.
 
slunge said:
realistically I dont need the 32GB as it stands - I did find on corsairs site identical ram with same part number, but it could well be that its using different chips at this point.
Current settings are pretty well optimised, spent a fair bit of time in the calculator running through it all 6 months ago - that said I have never bothered to push the frequency.

I did initally have it up at 3400 on this ryzen2600 but it was unstable beyond that back then, and slower than 3200 at c14 - may be more of the CPUs fault than the ram.
Click to expand...
Yeah pretty likely a cpu limitation there. Its definitely worth trying what you have when you get your new cpu before investing in anything new :)
 
heh, its this lockdown - its making me want to buy bits to keep me occupied :)
That said, im not silly enough to throw good money after bad.
 
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