Ryzen and RAM

[Mark1989]

So I'm potentially swapping over to Ryzen if I can sell my current board and CPU.

As my ram is DDR4 I can keep it, I know on Ryzen series 1 it was fussy and really needed high speed ram to get the most from it, is it the same now on later generations?

My ram is only 2400Mhz

 

[Panos]

So I'm potentially swapping over to Ryzen if I can sell my current board and CPU.

As my ram is DDR4 I can keep it, I know on Ryzen series 1 it was fussy and really needed high speed ram to get the most from it, is it the same now on later generations?

My ram is only 2400Mhz

Same applies to both Intel and AMD with ram. To get most of your Intel system faster ram needed also.

 

[smilingcrow]

Same applies to both Intel and AMD with ram. To get most of your Intel system faster ram needed also.

With the IF clock usually the same as the memory clock does Ryzen suffer more when using 2400 RAM than Intel?
That speed is well below even the officially supported speed let alone the 3600 that many suggest is optimal.
I would imagine that Ryzen would suffer a lot more but be good to see some hard data. Especially not gaming related.

 

[Illuminist]

You can probably overclock that ram a little maybe to 3000 depends what it is?

 

[Panos]

With the IF clock usually the same as the memory clock does Ryzen suffer more when using 2400 RAM than Intel?
That speed is well below even the officially supported speed let alone the 3600 that many suggest is optimal.
I would imagine that Ryzen would suffer a lot more but be good to see some hard data. Especially not gaming related.

Intel suffers proportionally the same with AMD. Is a myth that they do not. Plenty of videos showing exactly this, the benefits Intel CPUs have with ram speeds from 2400 onwards. Intel hits diminishing returns at 3200. While AMD Ryzen benefits for every 1ns dropped all way to 3800Mhz or those lucky who can get 1933 IF at 3866.

Same also applies to single vs dual rank modules, especially on Intel.

 

[smilingcrow]

Intel suffers proportionally the same with AMD. Is a myth that they do not. Plenty of videos showing exactly this, the benefits Intel CPUs have with ram speeds from 2400 onwards. Intel hits diminishing returns at 3200. While AMD Ryzen benefits for every 1ns dropped all way to 3800Mhz or those lucky who can get 1933 IF at 3866..

So the same but different; thanks for clearing that up.

 

[faceman123]

I was running on 2133 for 3 weeks - bumped it up to 3200mhz - forgot to enable XMP - small difference was noticeable. but nothing to write how about

 

[.45 ACP]

i'm using 2133 on purpose because xmp 3000 doesn't work.2700x.on 2000 series there is no FCLK but 3000 series has it.if you can set FCLK 1200 than there is no problem.if FCLK and ram doesn't 1:1 latency will rise.2400 ram 1200 FCLK 1:1 because there is no 2400 ram it's 1200.DDR means double data rate or someting.

 

[Illuminist]

i'm using 2133 on purpose because xmp 3000 doesn't work.2700x.on 2000 series there is no FCLK but 3000 series has it.if you can set FCLK 1200 than there is no problem.if FCLK and ram doesn't 1:1 latency will rise.2400 ram 1200 FCLK 1:1 because there is no 2400 ram it's 1200.DDR means double data rate or someting.

With 3000 is better to have 1800 on the IF and keep the ram at 2400 with the tightest timings possible. Check out the linus video as this shows what I'm saying to be true

 

[.45 ACP]

With 3000 is better to have 1800 on the IF and keep the ram at 2400 with the tightest timings possible. Check out the linus video as this shows what I'm saying to be true

lin us?who is this sorry i'm a little strange to new fashion.make FCLK 1933 or 2000 but if it's not 1:1 latency is miserable you can check yourself you don't need lin us.what is FCLK?on 3000 series ram controller isn't in the core anymore.it's in the IO and fclk is bridge between controller and core.which one is reasonable 1:1 communication or lin us?

 

[jigger]

From what I’ve seen the 3000 chips will run just about any memory overclocked.

 

[Illuminist]

lin us?who is this sorry i'm a little strange to new fashion.make FCLK 1933 or 2000 but if it's not 1:1 latency is miserable you can check yourself you don't need lin us.what is FCLK?on 3000 series ram controller isn't in the core anymore.it's in the IO and fclk is bridge between controller and core.which one is reasonable 1:1 communication or lin us?

Ummm, its a tech channel and with low speed ram it's better to not use 1:1, it's better to run tighter timings and a higher fclk/infinity fabric.
If English is not your first language then forgive me as that was hard to decipher. If it is then please lay off the vodka this early in the day.
I'm running 3800mhz at cl14 and 1900mhz if, I've tried all the timings myself also, and i know what I'm talking about.

 

[Alan1969]

your 2400mhz ram will work fine with all ryzen set ups. although I have this 8 pack RAm for my ryzen 5 3600 https://www.overclockers.co.uk/team...3200mhz-dual-channel-kit-black-my-08l-tg.html

and when I first started the computer up it was still at 2400mhz in the bios and I ran a benchmark test - the benchmark was noticeably higher when I changed (enabled XMP) the ram to 3200mhz although whether you would notice any real difference I am not so convinced (my daughter uses a ryzen 7 1700 with 2400mhz ram just fine and that seems snappy and responsive). You only really need the very fast ram if you are a pro player who needs the extra 2 fps.

However saying that 16gb of 3600mhz ram isn't expensive https://www.overclockers.co.uk/patr...dual-channel-kit-pvs416g360c7k-my-104-pa.html
surely you can afford £75 if upgrading?

 

[.45 ACP]

Ummm, its a tech channel and with low speed ram it's better to not use 1:1, it's better to run tighter timings and a higher fclk/infinity fabric.
If English is not your first language then forgive me as that was hard to decipher. If it is then please lay off the vodka this early in the day.
I'm running 3800mhz at cl14 and 1900mhz if, I've tried all the timings myself also, and i know what I'm talking about.

no not first.it's my 3rd language and i don't like a bit.you have 3800/1900 and i have 3733/1866 but if i have 2400 ram i won't break 1:1.a Turkish proverb says: it's easy to divorce a wife for a bachelor.because of that lets agree to disagree.you do that and 1:1 is my way.it seems yours too 3800/1900.

 

[Illuminist]

no not first.it's my 3rd language and i don't like a bit.you have 3800/1900 and i have 3733/1866 but if i have 2400 ram i won't break 1:1.a Turkish proverb says: it's easy to divorce a wife for a bachelor.because of that lets agree to disagree.you do that and 1:1 is my way.it seems yours too 3800/1900.

Its not about agreeing, it's not my opinion this has been tested..... To be useful to other people this information needs to be accurate to get the correct speed from the machine.

https://www.google.com/url?sa=t&source=web&rct=j&url=https://m.youtube.com/watch?v=iHJ16hD4ysk&ved=2ahUKEwj60OqlypznAhX3Q0EAHZpCC1wQo7QBMAJ6BAgAEAY&usg=AOvVaw0Pqc7ckaZH4gDLBwWuycnu

Here is the video I was referring to

 

[Joxeon]

Its not about agreeing, it's not my opinion this has been tested..... To be useful to other people this information needs to be accurate to get the correct speed from the machine.

https://www.google.com/url?sa=t&source=web&rct=j&url=https://m.youtube.com/watch?v=iHJ16hD4ysk&ved=2ahUKEwj60OqlypznAhX3Q0EAHZpCC1wQo7QBMAJ6BAgAEAY&usg=AOvVaw0Pqc7ckaZH4gDLBwWuycnu


Here is the video I was referring to

Yeah this is actually true, by running 2-1 you get a 10ns latency penalty but this 10ns can be overcome by pushing up the infinity fabric and going with tighter timings.

So anyone running 3000 or under should just go 2-1 and push fclk as high as it will stabily go.

The same would apply the other way if you can push ram above 4600 while maintaining decent timings.

 

[gerardfraser]

So I'm potentially swapping over to Ryzen if I can sell my current board and CPU.

As my ram is DDR4 I can keep it, I know on Ryzen series 1 it was fussy and really needed high speed ram to get the most from it, is it the same now on later generations?

My ram is only 2400Mhz

If you want to know for sure if you should buy new Ram,I will help you out ,so you can decide.
1.List a game or two you play
2.List your best tuned ram 2400Mhz timings or your best overclock on ram you can run or achieved. Supply screen shots of all timings.
3.I will test those settings against the best ram, with AMD Ryzen 3800X CPU that can run against your 2400 ram timings
4.If you do not want the best AMD Ryzen ram tested ,name the ram speed you would like tested (ram you would buy)against your 2400Mhz ram,I will test those settings
5.I will make a video if you want or just make a chart and then you can decide on saving the extra cash instead of buying new ram and buy a better GPU for extra FPS.

I have tested this stuff like this a lot with PC gaming. If you are not going for the best of the best gear to get every last drop out of playing games at 720p/1080p then a normal system the best settings you can achieve on ram timings for your ram is the best way to go.


So if you intend to play games at 2560x1440 keep your 2400Mhz and set the best ram timings you can and you will not be behind compared to more expansive ram by any real margin in FPS.
2560x1440 2133Mhz thru to 4200Mhz chart and full manual timings for ram

Spoiler

So if you intend to play games at 1920x1080 your 2400Mhz with best ram tuned timigs,you will still not be far behind compared to more expensive ram but you will be behind by a slight few % in some games.
I do not play games at 720p/1080p but I also tested tuned timings at 1080p but with 2933Mhz ram and not 2400Mhz.With no real difference between 2933Mhz ram and 3866Mhz ram in FPS gaming.

Test 1920x1080 tuned timings BF5 ,GTAV,RDR 2 and sleeping dogs at 1920x1080

Spoiler

BF5 and GTAV 1920x1080

RDR2 Sleeping dogs

 

[Mark1989]

It's Kingston Hyper X ram that I have not sure on timings though, I'd have to check when on PC later.

Id possibly be looking at the 2600X/2700X chip. I would be selling my current chip and board to part fund the upgrade

I just recall reading Ryzen series one chips not playing well with lower speed ram, mostly why I asked.

I only game at 2560x1080 and my 1070 eats everything up at that Res still

 

[gerardfraser]

Well then I have sold all my 2600X,if you are going that route 2600X/2700X chip which are very good CPU's, then you do not need to buy ram ,just use what you have and overclock it, if you want.
It would be a waste of cash to buy ram,just my opinion.Good luck in your build.
If there is anyone with 2600X/2700X maybe they could be so kind to test for you.

2600X Ryzen vs RAM 2133MHz vs 2400MHz vs 3200MHz vs 3600MHz ram just not affect this game much
2560x1440

 

[.45 ACP]

Its not about agreeing, it's not my opinion this has been tested..... To be useful to other people this information needs to be accurate to get the correct speed from the machine.

https://www.google.com/url?sa=t&source=web&rct=j&url=https://m.youtube.com/watch?v=iHJ16hD4ysk&ved=2ahUKEwj60OqlypznAhX3Q0EAHZpCC1wQo7QBMAJ6BAgAEAY&usg=AOvVaw0Pqc7ckaZH4gDLBwWuycnu

Here is the video I was referring to

alright test this: if you can go over 3800 hold still FCLK and brake 1:1
i can make 4200 mhz but i can't go over 1866 FCLK. 4200/1866 is better than 3733/1866 your argument(my archive says otherwise).i'm defending 1:1 no matter costs(i can show source about this but i did not take you serious you don't know what you're talking about, you don't have opinion it's other's thoughts)
you're using 1:1 3800/1900 for god's sake but when i said if 2400 ram use 1200 fclk you said no, lin us min us... you said go 1900 fclk(not everybody can make this far) and tight timing like 2400/1800 cl14.that's wet dream man how old are you?