Significance of difference between these two "identical" memory kits - CMH32GX4M2Z3600C18 vs CMH32GX4M2D3600C18

[Astroflash]

Hi guys, was curious about the difference between these two kits. The rated speeds and timings are the same, but the SPDs are different. Why would this matter and in what use case? I know it's probably meaningless, but I'm curious about the technical details that would mean Corsair would produce two different versions.

 

https://www.corsair.com/ww/en/Categories/Products/Memory/Vengeance-RGB-PRO-SL-Black/p/CMH32GX4M2Z3600C18#tab-tech-specs

https://www.corsair.com/uk/en/Categories/Products/Memory/Vengeance-RGB-PRO-SL-Black/p/CMH32GX4M2D3600C18#tab-tech-specs

 

 

[RAM555789]

SPD speed is the speed the ram runs at out of the box, one just runs slower out of the box than the other so when you install the RAM, just make sure the XMP profile is set so they run the same speed.

[spannvis]

They have a different speed out of the box. This won't matter if XMP is turned on.

 

I'm not sure why Corsair makes two similar rams with just such a small difference. I'm just guessing but it could be that they are produced in different factories in different countries and/ or for different markets. 

 

One link is for the UK version of their site (corsair.com/uk/en)  and one is for their international (?) site (corsair.com/ww/en). 

[BiotechBen]

2 minutes ago, spannvis said:

They have a different speed out of the box. This won't matter if XMP is turned on.

 

I'm not sure why Corsair makes two similar rams with just such a small difference. I'm just guessing but it could be that they are produced in different factories in different countries and/ or for different markets. 

 

One link is for the UK version of their site (corsair.com/uk/en)  and one is for their international (?) site (corsair.com/ww/en). 

I would say that it could be a matter of different binning, with the lower ones being some minor difference like factory A has a higher yield of perfect chips vs factory B and so factory B has a higher supply of "almost" chips

 

[Hairless Monkey Boy]

The SPD is based on how the chips that were purchased from Samsung/Micron/Hynix. Corsair doesn't make the chips nor the SPD, they buy them from a chipmaker as is and then bin them, slap them on a PCB, and add the XMP profiles.

[Xii-Nyth]

These are using different chips but are targeting the same spec. One probably can be tuned better than the other. It appears there was no coordinated effort to figure this out despite the popularity of this kit...

 

Honestly kinda disappointed that the pc community/tech youtube, makes the same video repeating the same information but different generation. Would be nice to have actual information... buildzoid alone has provided most of it in the ram scene and hes just 1 guy.

 

Trying not to look at this junk on the sidebar.. minion routers... do you have to unzip files... we don't need aaa games...