Rams type comparison

[tsteo77]

Spotted this rams type comparison online.
My cosair lpx 2x16gb CMK32GX4M2E3200C16 is dual ranks.
I prefer more chips per ram stick.

It's quite fast, loading windows 10 ENT 21H2 with ERP and without fast boot, 3200mhz 17.1secs
and 2133 14.3secs. I run them on 2133mhz instead of at overclock speed, everything plays better. Kindly share your opinions.

https://www.cgdirector.com/single-rank-vs-dual-rank-ram/

https://www.igorslab.de/en/performa...ks-in-theory-and-practice-with-cyberpunk-2077

 

[Yongkit]

Spotted this rams type comparison online.
My cosair lpx 2x16gb CMK32GX4M2E3200C16 is dual ranks.
I prefer more chips per ram stick.

It's quite fast, loading windows 10 ENT 21H2 with ERP and without fast boot, 3200mhz 17.1secs
and 2133 14.3secs. I run them on 2133mhz instead of at overclock speed, everything plays better. Kindly share your opinions.

https://www.cgdirector.com/single-rank-vs-dual-rank-ram/

https://www.igorslab.de/en/performa...ks-in-theory-and-practice-with-cyberpunk-2077

The article shared is very informative.

I think you might need to read few times to understand better how it benefits running at stock speed vs xmp/docp benefits your system.

Running at stock speed make no difference for any ram you use on your system.

 

[watzup_ken]

As far as I understood, less sticks of ram is best, and dual rank is generally better (particularly with AMD CPUs). I have seen significant performance uplift by changing 1Rx16 memory to 2Rx8 on laptops. In games for example, the change resulted in about 40% minimal FPS uplift in some games.

 

[86technie]

Spotted this rams type comparison online.
My cosair lpx 2x16gb CMK32GX4M2E3200C16 is dual ranks.
I prefer more chips per ram stick.

It's quite fast, loading windows 10 ENT 21H2 with ERP and without fast boot, 3200mhz 17.1secs
and 2133 14.3secs. I run them on 2133mhz instead of at overclock speed, everything plays better. Kindly share your opinions.

https://www.cgdirector.com/single-rank-vs-dual-rank-ram/

https://www.igorslab.de/en/performa...ks-in-theory-and-practice-with-cyberpunk-2077

Think you are confused.
There are few things:

1) Dual Rank and Single Rank RAM do not confuse this with Dual channel and Single channel.
Usually for my understanding Single rank is better since all the memory is one side.
But depend on the CPU memory controller.

2) XMP wise speeds it is recommend to put the highest.

3) Memory latency

I put it simple depend which CPU you are using, if you want the best memory speed and latency.
Use the exact memory that it supports for example Intel i5 8400 that supports DDR4-2666.
If you use memory kit like what I did was a Corsair DDR4-2666 memory kit with XMP turn
it.

It is faster than higher speed memory kits like DDR4- 3200 mainly due to the latency/CAS.
Not sure what do you mean play faster is also confusing, if you are running DDR4 2133
on Intel i5 6400 etc. than is fine.

Intel i5 7400 and above supports DDR4-2400 and above, performance may hit a bit
for Intel but AMD wise higher frequency memory will boost performance.
In short if you want the best memory performance with low latency than check what exactly
the CPU supports.

 

[TanKianW]

A more computer science (scientific) approach on memory ranks:
​

 

[Phen8210]

When it comes to the topic of ranks.

To get the best performance on AMD systems, aim for a total of 4 ranks. Above 4, there is no difference.

It can be configured by having 2R each from 2 sticks OR 1R each from 4 sticks. This has been proven in many real-world measurements for years.

I recommend 2R from 2 sticks, as 4 sticks configuration tends to put more stress on IMC, which may not handle well, especially when the ram runs at a higher clock speed.

That's all you need to know. No need to overthink so much.

 

[KleoZy]

When it comes to the topic of ranks.

To get the best performance on AMD systems, aim for a total of 4 ranks. Above 4, there is no difference.

It can be configured by having 2R each from 2 sticks OR 1R each from 4 sticks. This has been proven in many real-world measurements for years.

I recommend 2R from 2 sticks, as 4 sticks configuration tends to put more stress on IMC, which may not handle well, especially when the ram runs at a higher clock speed.

That's all you need to know. No need to overthink so much.

ah.. AM4 or AM5? cos AM5 am still having issues till today, cannot run 4 stick with EXPO profile on and leaving as default, I have error code on the POST Debug screenie.

and I agree with you.. end user OC till the frequency so high but yet have to losing timing.. to me no point, unless you can pump high frequency with tight timings, else is a waste of time. I rahter just run XMP or EXPO and to get rams that no need to OC.. by default with high frequency and tight timings. Anyway I prefer super tight timing than to high frequency lol.

 

[wyssn11]

Note the physical differences between DDR5 RDIMMs Vs the desktops PCs DDR5 UDIMMS.
They are Keyed differently.
For folks thinking of going the route of PC upgrading to workstation class might not be able to re-use their DDR5 (PCs UDIMMS) in the workstation motherboards.