ram motherboard locations?

Former user wrote on 2/21/2022, 11:33 AM

Hi, a little while ago, last yr, I bought 8 x 32GB 3200mhz ram sticks, my system wouldn't accept them & it defaulted to 2400mhz, my fault tho, I found out later I'd got the wrong ones & they were returned & paid in full thankfully 🤦‍♂️👍

I'm having another go & after some consultation with a pc company I've bought more, 4x32GB 3200mhz, I'm having to drop the amount of RAM for the increase in speed, they're listed on the motherboard specs so hopefully they will work & be recognised, my question is - it says 1,2,4,8 ?

in the pics it of my motherboard it shows DIMM_A, B, C, D, E. F, G. H. is that A=1, B=2 , C=3, D=4, etc. ?

Comments

Chief24 wrote on 2/21/2022, 11:59 AM

@Former user

That just means you can use each particular DRAM module in either one DIMM slot, two, four, or eight. Which for that WRX80 chipset you have equates to either: Single, Dual, Quad, or Octo Channel.

If you are only purchasing a total of Four (4) of the modules, you have to check the motherboard manual for the correct location of only using 4 modules, which most of the time for the Mainstream or HEDT Intel/AMD platforms the typical DIMM arrangement is:

Looking at CPU Socket, go to second DIMM Slot, then skip next, then use the next slot for correct Dual/Quad channel (this is true for the Intel HEDT or AMD Threadripper boards with Eight DIMM Slots with four on each side [unless those pesky mATX four slot boards] of the socket, so each of the two "Further Away" slots). So looking at your screenshot of the Motherboard DIMM Slots, and if you are only using a total of Four (4) sticks, you would use DIMM Slots B1, D1 (which correspond to the "outer" sets of DIMM slots), and you would do the same on the other side of the socket. I would say which ones, but your screenshot cut off the upper part of the board, so not sure which slots are numbered; though if I had to "hazard a guess", I would say it would be slots F1, then H1. Your Motherboard Manual is the true Answer, for correctness!

Hope this helps.

Mike "The Chief" O'Sullivan

Former user wrote on 2/21/2022, 12:16 PM

@Chief24 yeah that's the online pics that aren't great, it just shows in the tilted pic i posted

on the website memory listing, there's no option for 8 x 32GB sticks @3200mhz, 4 is the most i can get, this motherboard has a Server history so things are a little different to a 'home' pc motherboard, apparently it's very stable but not designed to be supper fast, it's more about workload & reliability,,, apparently 🤷‍♂️😂

Former user wrote on 2/21/2022, 2:14 PM

So looking at your screenshot of the Motherboard DIMM Slots, and if you are only using a total of Four (4) sticks, you would use DIMM Slots B1, D1 (which correspond to the "outer" sets of DIMM slots), and you would do the same on the other side of the socket. I would say which ones, but your screenshot cut off the upper part of the board, so not sure which slots are numbered; though if I had to "hazard a guess", I would say it would be slots F1, then H1. Your Motherboard Manual is the true Answer, for correctness!

@Chief24 doesn't 1,2,4,8 mean A, B, D, H ?

1 _2__4_____ 8
^ _^ __^_____ ^
A B C D E F G H

Chief24 wrote on 2/21/2022, 10:50 PM

@Former user

Nope. As I stated above, it is for the "TOTAL" number of Slots that the motherboard and the Particular manufacturer module, is officially supported.

So what it means, is that with the particular modules from that manufacturer, they would fill either 1, 2, 4, or 8 of the total DIMM Slots on the motherboard.

And yes, I do know that your motherboard is a "Server" variant, as are the majority of HEDT platforms from either Intel or AMD. I currently have an MSI TRX40 Pro WiFi with a 3960X (24 Core/48 Thread); as well as a 2950X (2nd Gen Threadripper) on an Asus ROG X399-E Gaming. I have an old Gigabyte X99 Wifi Intel HEDT as my Home Server. Guess being a retired IT Nerd got me going that way, as like Forum Member John Dennis, I worked with our Servers (and other stuff, naturally!) at the School District I retired from.

About the only real difference between the WRX80 and TRX40 chipsets is that your board has the Octo Channel Memory (One DIMM Slot for each Channel), mine is Quad Channel. Confusing, yes. Plus, your board supports 128 PCI-e Lanes for all that GPU processing (if you have the right software), or what I would use it for: A LOT OF PCI-e STORAGE. Imagine having Four of those M.2x16 PCI-e Expanders with 4TB on each Connector? That's a lot of Transcoded Canon R6 C-LOG3 4K30p HEVC to ProRes Goodness!

Mike