to DIMM or UDIMM

brent

I'm at the final stages of transitioning from a dilapidated desktop to one I'm modifying myself. With the SSD, the 16GB the new one has is snappy and I don't have money to burn but Im lookiing into fresh memory.

UDIMM: unregistered memory, faster than DIMM, prone to misadventure, CHEAP

DIMM: stable, registered, slower, LESS CHEAP

Most of the kits I am seeing are UDIMM. Lenovo recs DIMM so would stay with that, but it's pricier.
QUESTION: no one needs UDIMM but gamers, right? Or people with home theater?
It likely would not even be noticeable whatever I got? Or matter? Or could UDIMM go rogue?

memory the last hurdle (for my brain), and it's a 7-year lenovo so decisions get easier.
Thanks for any input.

also from my research: "Eventually, DIMMs generate more heat and are usually not suitable for home environments." I usually get with what manufacturer recommends (DIMM) but interesting. (EDIT)

BuzzPCSOS

I was always told to use DIMM.
I suppose it depends on what you are planning to do with it. If rock steady reliability is not a high priority then get the cheap stuff.
Server type reliability or just browsing a bit faster.

brent

BuzzPCSOS two used samsung dimms (2X8GB) on ebay for $25. This might be a path. I want rock solid reliability so thanks for the confirmation. I have the lenovo manual, they recommend the DIMM.

edit: you said the SSD would be snappy and it is. Do you think I will notice the difference between 16 and 24? I know it sounds like a weird question, but I am serious.

WetGeek

brent Do you think I will notice the difference between 16 and 24?

I noticed it when I do something like installing a big update with eopkg.

brent

WetGeek I keep forgetting Ghz speed is set by computer and ISP when the update downloads, but the installation after the download script is independent of that I guess? And that's where the kick in memory comes in. Do I have that right?

WetGeek

brent Do I have that right?

I think you may be right, but I've never analyzed it to that extent. I just know that on a laptop with 32 GB of RAM, a large update installs so fast it's hard to see what packages are being processed, except for the very big ones. And I'm pretty sure that more RAM is better for running VMs.

Harvey

Way, way off in the weeds.

Lets hope flarum keeps the formatting for this chart:


                       What it is.
                           |
                         [DIMM]
                           |  
                         Types.
                /          |          \
           [UDIMM]     [SODIMM]     [RDIMM]

You will likely be using UDIMM on your desktop computer. SODIMM in your laptop and likely never using RDIMM.

UDIMM is often simply refereed to as just DIMM.

brent

Harvey saw an article differentiating these two dimms (dimm and udimm dramatically. With very differing characteristics. ref: https://www.onecomputerguy.com/udimm-vs-dimm/ --that's a dense article, Lenovo in a 2017 pdf referred my specs as DIMM. (I know about Sodimm because laptop memory looks funny!)

Harvey UDIMM is often simply refereed to as just DIMM.

maybe it evolved that way in the industry and I didn't catch that nuance?

Harvey

brent
More likely they are just wrong.

sudo dmidecode --type memory | grep -i "Form Factor"

Form Factor: DIMM
Form Factor: DIMM
Form Factor: DIMM
Form Factor: DIMM

sudo dmidecode --type memory | grep -i "Type Detail"

Type Detail: Synchronous Unbuffered (Unregistered)
Type Detail: Synchronous Unbuffered (Unregistered)
Type Detail: Synchronous Unbuffered (Unregistered)
Type Detail: Synchronous Unbuffered (Unregistered)

UDIMM = Unbuffered / Unregistered Dual In-Line Memory Module.
SODIMM = Small Outline Dual In-Line Memory Module.
RDIMM = Registered Dual In-Line Memory Module.

They are saying in one of their slides that DIMM is registered... Its not. He is using DIMM where he should say RDIMM. They are all DIMM.

Axios

brent https://www.corsair.com/us/en/explorer/diy-builder/memory/dimm-vs-udimm-vs-rdimm-vs-sodimm-vs-cudimm-whats-the-difference

brent

WetGeek . I just know that on a laptop with 32 GB of RAM, a large update installs so fast it's hard to see what packages are being processed, except for the very big ones.

but you can stream Formula 1 etc with no noticeable difference between 16/24/32?
Inclined to keep my money in my pocket but I am intrigued...
...with 16 and a HDD my flatpaks opened molasses slow and so did libre. they are snappier with 16 and an SSD. 32 must be Ludicrous Speed to quote Spaceballs with I saw the other night. (that reminds me).

brent

WetGeek I think you may be right, but I've never analyzed it to that extent. I just know that on a laptop with 32 GB of RAM, a large update installs so fast it's hard to see what packages are being processed, except for the very big ones. And I'm pretty sure that more RAM is better for running VMs.

we have no solus sync yet as of this writing but I want to share an observation. After I cloned solus successfully (thank yougparted) to my new refurb I used used it all of today finally. The flatpak update script that you wrote, and I use, had about 20 flatpak updates. Normally semi-sluggish on HDD, they were much faster and over with in less than a couple minutes.

lotsa words to say, yes, i do notice a BIG difference in updating between a 16GB HDD and 16GB SSD.

brent

Harvey that is much clearer, thanks harvey

Axios

Harvey Thanks handy little commands

brent

Axios "These are just a type of DIMM and for most users the names are interchangeable" corsair said what harvey said, thanks for the link. I skipped that article in my research because their mission is to sell corsair memory. but it was a straight article.

Axios

brent Ya I know but it was a simple understandable page.
Nuttin meant by it just another source.

brent

Axios I never took offense, all good--I skip a lot of results in the top 20. I like it better than the one I cited above and corsair did not to to sell me memory🙂 so even better.

I am surprised the guy in the article I found had a lot wrong but "onecomputerguy" should have been my clue.

Axios

brent Only sure thing about computers the eat whatever amount you feed them
memory and disk space included.
Never can have to much!!!

WetGeek

brent but you can stream Formula 1 etc with no noticeable difference

Yeah. My current laptop has 16 GB of RAM, and it handles such tasks just fine. And the Windows machine that streams to our TV also has 16 GB. That's the only task it ever handles - streaming stuff to the TV using Vivaldi - so it's not needed for any heavy multitasking.

I've come to the understanding that at this time, 16 GB is plenty for most personal computers, absent any special needs, like video editing, or somesuch. I haven't felt the need to add RAM to any of my computers that came with 16 GB originally.

brent

WetGeek great insight. will keep my money for now! thank you

Harvey

I had to upgrade my nephews system from 16->32GB recently as he would run out of RAM playing games. I blame Windows 11, but otherwise I would tend to agree 16 is enough for most people. I would suggest 32 when building a family members PC because the difference is as low as $40 AUD for DDR5 and $24 for DDR4. As I would rather not have to help them again they get more RAM now.

brent

Harvey , but otherwise I would tend to agree 16 is enough for most people

I'm starting to think so too. appreciate the input