How do I tell if my ram is single or dual rank?

[METALKECSKEHUN]

I want to get another pair of my G.Skill Trident Z RGB (2x8GB 3200MHz DDR4) ram, but first I wanna know for sure (and for future builds) if they are single or dual rank. So some software that displays such information and/or some way to tell before purchase would be greatly appreciated.

[Omega]

You can usually get this information from the model number.

[METALKECSKEHUN]

nullable původně napsal:

Well one surefire way would be to take an existing stick out and look up the specific model specs. Since A. you're looking to add more RAM anyway and will need to open up the PC for that. B. RAM is easy to remove/install, that would be the surefire strategy to avoid any reporting errors by software.

You could then also see about getting the identical model sticks as opposed to something similar.

Other than that something like HWInfo might fit the bill. It's been a while since I've run it, so I don't know exactly how specific the details get, just that it'll provide lots of details.

As I said, I want to get another pair of the ram that I have currently. I also mentioned its exact model.

[METALKECSKEHUN]

Omega původně napsal:

You can usually get this information from the model number.

Yeah but how do I do that. What do I look for?

[_I_]

cpuz spd tab, and select the dimm, shows ranks

[Crawl]

Thaiphoon Burner will tell you everything you could possibly want to know about your memory.

[GOD RAYS ON ULTRA™]

_I_ původně napsal:

cpuz spd tab, and select the dimm, shows ranks

I also use cpuz

[Ralf]

METALKECSKEHUN původně napsal:

As I said, I want to get another pair of the ram that I have currently. I also mentioned its exact model.

F4-3200C14D-16GTZR, F4-3200C16D-16GTZR, F4-3200C14D-16GTZRX or F4-3200C16D-16GTZRX? But it's most likely single rank.

[pasa]

cpu-z, SPD tab, end of 4th row (Ranks...)

[Illusion of Progress]

You have multiple avenues to explore.

_I_ původně napsal:

cpuz spd tab, and select the dimm, shows ranks

Crawl původně napsal:

Thaiphoon Burner will tell you everything you could possibly want to know about your memory.

These were the exact two I was going to mention for software.

The memory itself might also have this information on it. It might have "1Rx#" or "2Rx#" with the "#" being a number. 1R would be single rank and 2R would be dual rank.

Lastly, you can look your memory up online and try and find out, but this might be inconclusive. You'll need to know your EXACT memory, not just the name. "G.Skill Trident Z RGB" might not be enough. You'll want to look up your exact part number, like for G.Skill will be something like "F4-3600C16-16GVKC" is what you need (to break this down, AFAIK, F4 means DDR4, the next part is the frequency and first timing [there may be a D or Q letter following this signifying if it cam in a kit of two or four modules], the next is the single module capacity size, and the final three of four letters are the specific part number). And it has to be exact. My "F4-3600C16-16GVKC" (SK Hynix ICs) isn't the same as "F4-3600C16-16GVK" (Samsung ICs I think) so make sure you have it exact if you go this route. So your part number is probably something like F4-3200Cxx(D)-8xxx (X being unknown, and the D likely showing up for the kit specs but not for individual module specs).

[CJM]

Old Rule of thumb: Each rank has its own side. If memory modules are all on one side it is Single Rank 1R. If memory is on both sides of the RAM module, then it is 2R with a rank of Memory on each side.

I would think 8GB is too low for a DDR4 module to have more than 1 Rank. G.Skill Trident is a good quality brand, and we are well past the era of low capacity DDR3 surpluses.

2 Rank memory tends to be used for higher total capacities. I would expect dual rank to not be used before 32GB per module minimum, and is likely required to extend capacity beyond the 64GB spec.

Take a look at the Hynix 128GB module (HMAA4GU6AJR8N-XN):

https://www.newegg.com/hynix-128gb-288-pin-ddr4-sdram/p/0RN-00BX-000M9

[Illusion of Progress]

CJM původně napsal:

Old Rule of thumb: Each rank has its own side. If memory modules are all on one side it is Single Rank 1R. If memory is on both sides of the RAM module, then it is 2R with a rank of Memory on each side.

That's not always true. It might be a good indicator most of the time, but you won't be able to rely entirely on it. You'll need to do more to find out for sure.

CJM původně napsal:

I would think 8GB is too low for a DDR4 module to have more than 1 Rank. G.Skill Trident is a good quality brand, and we are well past the era of low capacity DDR3 surpluses.

Likely true. Earlier 8 GB modules for DDR4 might be more likely to be dual rank, but unlikely for anything remotely recent. But like the above, it's better to just research and be sure rather than assuming a given capacity or that being single-side or dual-side implies anything.

CJM původně napsal:

2 Rank memory tends to be used for higher total capacities. I would expect dual rank to not be used before 32GB per module minimum, and is likely required to extend capacity beyond the 64GB spec.

My 16 GB modules are dual rank. I'd actually say a large number of 16 GB modules (for DDR4) may be dual rank, outside recent ones which are more likely to possibly be single rank

CJM původně napsal:

Take a look at the Hynix 128GB module (HMAA4GU6AJR8N-XN):

https://www.newegg.com/hynix-128gb-288-pin-ddr4-sdram/p/0RN-00BX-000M9

Woah, that's expensive for 128 GB.

https://www.newegg.com/g-skill-128gb-288-pin-ddr4-sdram/p/N82E16820232944

https://www.newegg.com/g-skill-64gb-288-pin-ddr4-sdram/p/N82E16820374003 (x2 obviously)

Nothing super fancy for timings or tuning potential, but neither is that other set. Not sure why it's four figures, haha.

[PopinFRESH]

Crawl původně napsal:

Thaiphoon Burner will tell you everything you could possibly want to know about your memory.

FYI Thaiphoon Burner is very simplistic and very frequently showing incorrect information. It does not actually inspect or probe the memory modules; it simply looks up the SPD tables and the XMP tables and then uses that information to do a lookup in its database, which is often incorrect.

[𝔗𝔥𝔦𝔫𝔤𝔲𝔰 𝔄𝔠𝔱𝔲𝔞𝔩𝔦𝔰]

METALKECSKEHUN původně napsal:

I want to get another pair of my G.Skill Trident Z RGB (2x8GB 3200MHz DDR4) ram, but first I wanna know for sure (and for future builds) if they are single or dual rank. So some software that displays such information and/or some way to tell before purchase would be greatly appreciated.

Download CPU-Z, that's it.It shows ranks,channels and all main info about RAM

[skOsH♥]

Go to your BIOS or system monitor utility and check to see if it's running about 1600MHz or 3200MHz

[plat]

cpu-z/memory tab has all you need to know. It's a really handy software at times.

https://i.imgur.com/oB6w5SY.png