The clock cycles are shorter for the faster SODIMM, so they both work out to the same-ish latency.
I am just guessing, but maybe the larger sticks are on sale because few people buy single sticks of DDR5 at high capacity.
Yes, both come down to around 9ns for a read command. Thank you for doing the math btw! On top of that both CPUs in the FW12 support only up to 5200MT, so what CL does the 5600 stick have at 5200MT? In the end it doesnāt really matter but I am bored, soā¦
Sometimes the reason is that the shop with the lower-on-average prices doesnāt have the item in its sortiment. Maybe that store has only 32GB with 5600MT on stockā¦
Edit: English is not my native language, so I felt that I needed to rephrase my comment. It did not sound right. I also removed an off-topic tangent.
My understanding is that the CL will scale proportionally when a 5600MT/s stick runs at 5200MT/s, more or less.
I think the 5200 speed sticks from Crucial are discontinued. For whatever reason, I often see prices go up right when something is discontinued, but before stocks run out. At least here in the US. Not sure if something similar happens with sellers in Europe.
From the typical retailers I check for stuff like this, I canāt even find the 5200 sticks available.
1 Like
Hey everyone, the āWhat DRAM/memory is supportedā knowledge base article is now up, in case youād like validate your RAM choices against the official list.
1 Like
Interesting to see, no 48GB-module has full validation
1 Like
Anyone know where i can find a ton of Mushkin Redline RAM options?
Specifically RedlineĀ® - 48GB DDR5-5200 SODIMM PC5-5200 42-42-42 | MRA5S520HHHD48G.
Cause this would be perfect for the Framework 12 but i cant find it anywhere.
I am content with RAM that responds 1ns slower than that.
KF556S40IB-32 is available on Amazon for 82 USD; I canāt find single SODIMM of your stuff anywhere.
What does full validation mean?
Iām curious about thisā¦ wondering what the āfull validationā vs limited means too?
Also - Am i right in thinking this should work fine for the FWL12? (also tempted to go cheaper on a 16gb version first, or the 24 is slightly cheaper too)
Yes I bought that exact RAM model (same product number) and it works fine.
Personally I would stick with 32GB unless you know youāll not need to do anything intensive. While everyoneās situation is different, my RAM usage on light tasks hangs around 12GB all up (including cache), running Fedora KDE.
3 Likes
I contacted Support asking if it would be safe to assume that module would work, this was their response:
We always strongly suggest picking any DRAM that is on the list to avoid other problems, since these DRAMs are tested to be working. On the list it shows that for the Crucial brand, the compatible one was the CT48G56C46S5 with 48GB.
For the Crucial Memory Modules, the 48GB stick is the only module that was tested.
But Iām glad to see that other users got it anyways and it worked! I just didnāt want to take that gamble, so I got a different module on the list.
I tried these two modules and and both worked without issue:
- Kingston FURY Impact PnP 32GB (KF556S40IB-32)
- Latency at 5600MT/s: 40-40-40-80
- Actual latency in the Laptop 12 at 5186 MT/s: 38-37-37-73
- Crucial 64GB (CT64G56C46S5).
- Latency at 5600MT/s: 46-45-45-90
- Actual latency in the Laptop 12 at 5186MT/s: 42-42-42-82
The Kingston has lower latency, but in the various tests I did (memtestx86, running games and looking at FPS, running a built-in benchmark in a game, building a fairly big C++/QT6 project (QGIS), processing a fairly big photogrammetry project with webodm) the performance gain (FPS or time to complete task) was only about 1%.
Since some of the things Iāll be doing on this laptop (photogrammetry, 3D modeling) benefit from more memory, I went with the Crucial 64GB CT64G56C46S5 in the end. But if 32GB are enough, you wonāt be disappointed with the KF556S40IB-32.
3 Likes
I think I will try this one out (CMSX32GX5M1A5600C48). It is available at a local store so easy to pick up. Any thoughts?
The KF556S40IB-32 is both lower latency and less expensive.
Thereās no good reason to choose the Corsair instead AFAIK.
1 Like
For anyone using this thread for general compatibility information, Iāve gone with a stick of Corsair Vengeance DDR5 SODIMM 48GB (1x48GB) 5200MT/s CL44 (SKU: CMSX48GX5M1A5200C44), and it seems to work fine.
2 Likes
Batch 10, but I just ordered a Corsair Vengeance DDR5 SODIMM 24GB (1x24GB) DDR5 5200MT/s CL44 for my FW12. Thereās currently a coupon code for 20% off on Corsair, which made it better value compared to the other options Iām able to find available. The code is ZZ-MEMORYAUG-20 for anyone whoās interested, worked on both memory and storage (bought a 1TB MP600 Mini for it as well)
Would 24GB be enough RAM for the FW12? I likely wonāt do heavy tasks aside from the occassional programming project. I was very tempted in getting 48GB instead, but wanted to keep costs lowā¦
I like to future-proof my systems, because memory is cheap enough, and will be used to cache SSD access if itās not needed for other things, but 24GB should be fine, as long as you arenāt doing anything that you know will use unusually large amounts of memory.
Some exceptions would be running multiple virtual machines, or trying to self-host large models on the laptop, and youāre probably not planning to do either of those. Even if so, 24 GB could still be enough, but it would depend on the size of the VMs or models.
1 Like
Did it wind up working, because I got the same stick and itās taking way too long to train. Iāve reseated the thing like 4 times now.