How much would faster ram improve min fps for a ryzen 5 5600?

[Niami]

Recently got a 5600(non-x) but I'm stil using the same ram, corsair vengeance lpx 2666MHz CL18. I quit often see stutters and fps drops and I've seen in various places how memory affects ryzen performance, even more so with newer gen being able to handle faster speeds. Would a faster kit help with this?

[RONOTHAN##]

20 minutes ago, Niami said:

I've seen in various places how memory affects ryzen performance, even more so with newer gen being able to handle faster speeds.

It's a bit of the opposite, it was more impactful on the earlier generations than the later generations. It still does help a fair bit, but because of the way the core and cache structure has changed it becomes less reliant on memory speed for the best CPU performance. 

 

A faster kit would likely help, though I would probably just try to overclock your current kit rather than try and get a replacement kit. Very little RAM can't do 3200 CL16-20-20-38 at 1.35V, and that gets you ~90% of the way there to the performance of the higher end kits, plus depending on what exactly your kit has for the memory IC you might be able to go a bit further as well. Worst case scenario is you enter those settings and it doesn't boot, then you can get a replacement kit. Odds are though you enter them, run a memory stress test overnight, and get a free performance uplift. 

[TheDankKoosh]

9 hours ago, Niami said:

Recently got a 5600(non-x) but I'm stil using the same ram, corsair vengeance lpx 2666MHz CL18. I quit often see stutters and fps drops and I've seen in various places how memory affects ryzen performance, even more so with newer gen being able to handle faster speeds. Would a faster kit help with this?

Faster memory goes a long way for ryzen and getting your memory controller and fabric clocks as high as possible tend to alleviate most stutter in games.

From my testing you get a near linear improvement to your 1% and .1% lows up through 3600mhz and can still get more from there with additional tuning

I've found that sub 60ns memory latency is basically required to avoid the amdip in some titles, but will require some manual work, a kit of b-die would serve very well.

A 32gb dual rank setup at 3600+ is definitely the way to go on zen 3, how much would you be willing to spend toward that performance upgrade? ~$100 gets you 32gb (4x8 which is typically best for ryzen) of b-die that'll be capable of doing 3800 14-14-14-30, that along with tuning of your sub timings would get you around 55ns memory latency and plenty of bandwidth to work with. $60 gets you a 32gb kit of 3600mhz in some flavor of hynix memory die which cannot do nearly as good memory latency as samsung b-die. That memory would still be a much higher performance alternative compared to your current memory kit.

[Mark Kaine]

1 hour ago, TheDankKoosh said:

4x8 which is typically best for ryzen

Eh, no. 4 sticks is never good for ryzen because the memory controller can't keep up.

[TheDankKoosh]

17 minutes ago, Mark Kaine said:

Eh, no. 4 sticks is never good for ryzen because the memory controller can't keep up.

The memory controller has an easier time keeping up with dual rank in a 4x8 configuration compared to 2x16, dual rank is also the only way to increase bandwidth and decrease latency when pinned at 3600+. A dual rank 3733 setup would perform similar to a single rank 4000 setup, with the 4000 only winning slightly in latency. Many ryzen chips are capable of 3800 dual rank so there's little reason to not go that route.

 

These are the conclusions I've come to in my own testing, test it yourself if you don't believe me

[Mark Kaine]

No, no, no that is complete nonsense. 

[filpo]

5 minutes ago, Mark Kaine said:

No, no, no that is complete nonsense. 

ye exactly

1 hour ago, TheDankKoosh said:

The memory controller has an easier time keeping up with dual rank in a 4x8 configuration compared to 2x16, dual rank is also the only way to increase bandwidth and decrease latency when pinned at 3600+. A dual rank 3733 setup would perform similar to a single rank 4000 setup, with the 4000 only winning slightly in latency. Many ryzen chips are capable of 3800 dual rank so there's little reason to not go that route.

 

These are the conclusions I've come to in my own testing, test it yourself if you don't believe me

No its cuz its harder for the memory fabric to get to 1800mhz then it is to get to 1600mhz i.e. easier to stay stable at 1600mhz vs ocing the infinity fabric to 1800mhz to stay in time

[r00tb33r]

13 hours ago, Niami said:

Recently got a 5600(non-x) but I'm stil using the same ram, corsair vengeance lpx 2666MHz CL18. I quit often see stutters and fps drops and I've seen in various places how memory affects ryzen performance, even more so with newer gen being able to handle faster speeds. Would a faster kit help with this?

Give this a look:

https://github.com/integralfx/MemTestHelper/blob/oc-guide/DDR4 OC Guide.md

 

Good chance it will go faster.

[TheDankKoosh]

23 minutes ago, Mark Kaine said:

No, no, no that is complete nonsense. 

 

17 minutes ago, filpo said:

ye exactly

No its cuz its harder for the memory fabric to get to 1800mhz then it is to get to 1600mhz i.e. easier to stay stable at 1600mhz vs ocing the infinity fabric to 1800mhz to stay in time

 

Every single ryzen 5000 will do 1800 fabric on dual rank b-die without failure, and if you cannot stabilize that, then you shouldn't be overclocking in the first place.
Nothing either of you have said invalidates my post above since you haven't disproven my ideas, please cite a source of some kind if you think I'm wrong.

32gb (4x8) of samsung b-die is the best memory configuration for ryzen 5000 period, 1900 fclk is doable on most chips, especially on single CCD chips like the 5600. So all you have to do is set 1.05-1.125 VSOC 1.5 VDIMM and run 3800 c14 all day. These settings would fix all of his stutters, and I invite the both of you to prove me wrong.