@DannyT, I was curious about that kit as well, but from what I’ve gleamed from this forum, I doubt the Framework run it at CAS 16, unfortunately, at least under the current BIOS. The tightest timing you can get for 3200 under JEDEC is CAS 20, so that should be your current best case.
According to what I can see posted about that kit (shout out to the hero on Newegg who uploaded a CPU-Z screenshot), the fastest JEDEC profile specified by the CAS 18 version of that kit is 22 @ 3200; the faster profiles are XMP 2.0. I’m guessing your CAS 16 kit follows that. So likely it will auto-configure to CAS 22 at 3200.
Please post your results when it comes in though! I’m interested to see what happens.
I installed the G.SKILL Ripjaws Series 32GB (2 x 16GB) DIMM DDR4 3200 (PC4 25600) Laptop Memory Model F4-3200C22D-32GRS (CAS Latency 22, 1.20V) and it works fine. My batch from Newegg was single rank.
@FsOver2, thanks for sharing! Manufacturers aren’t very straightforward with what their kits are, so that’s nice information to have. Glad it worked for you.
Just in case someone is looking for additional memory options, I used two ATECH/ADATA 8GB DDR4-3200 modules in ours and they’ve worked fine so far at 3200. I didn’t do a deep dive on the modules so I don’t know who made the actual DRAM ICs.
They are double-sided and fit snugly but without issue. Make sure to route your WiFi antennnae in the provided guides if you use both
Additional Notes: This product requires enabling XMP in BIOS to operate at the rated speed. Otherwise, the memory kit will operate at the default speed set by the system.
Additional Notes: Rated SPD frequency requires compatible CPU and chipset support
There’s a pattern for all of G.SKILL’s DDR4-3200 memory that if it’s rated for any latency CL18 or lower, it will be marked as requiring XMP to run at the rated speed. All of their CL22 ones seem fine. It seems that G.SKILL is a manufacturer that’s pretty up-front about the XMP requirement as long as you’re looking at the official spec page.
My Framework laptop arrived the other day, and I can confirm this G.Skill 64GB memory kit runs nicely at full DDR4-3200 speed as I expected it to (given it’s lack of XMP requirement for such). Memtest86 also came out clean, so all is good
@AlexS, Can finally confirm. The (2 x 8GB) G.SKILL Ripjaws (Model F4-3200C16D-16GRS) that I had do run at 3200MHZ… Unfortunately, because of the lack of XMP on the framework laptop the CL is 22 instead of 16.
That’s the CAS latency the DDR4-3200 modules Framework sources, CL22.
“Seems” bad but it seems like that’s what native DDR4-3200 runs at. The number keeps popping up which leads me to believe they’re all using the same ICs.
My desktop system uses XMP and can clock at either DDR4-3600 CL16 or DDR4-3200 CL14, but its native speed seems to be DDR4-2666. But that’s another set of numbers that keeps popping up, denoting similar ICs: DDR4-2666 native, DDR4-3200 CL16 by XMP or DDR4-2666 native, DDR4-3600 CL16/DDR4-3200 CL14 by XMP for the higher-end memory ICs.
i’m not an expert but i think i read that each individual motherboard / cpu has a limit for the total number of ranks allowed, and also number of dram chips per memory module.
it would be nice to know exactly which are supported by framework. does it support quad rank, dual rank, 2rx8, x4, x16, etc…?
Just adding my experience here. I’m reusing RAM from my old laptop (OEM Samsung M471A1K43CB1-CTD, 8GB 2666MHz, plus a matching stick from eBay, so 16GB total) and though it’s rated to 2666MHz CL19 it’s running at 2133MHz CL15. Edit: nevermind I think all is well here, probably has to do with running in Gear 2 mode so I’m misreading something.
Additionally, I tested the 16GB kit of Kingston HyperX Impact 2933MHz CL17 (HX429S17IBK2/16). Similar to the 32GB kit mentioned earlier this one also refused to boot with any combination of sticks installed. As stated several times probably best to stick with sticks that run natively at 3200 CL22.
I just ordered the Framework DIY Laptop and was going to use “PNY XLR8 Gaming 32GB (2x16GB) DDR4 3200MHz (PC4-25600) CL20 1.2V Dual Rank Notebook/Laptop (SODIMM) Computer Memory Kit – MN32GK2D43200X”.
Its on Amazon for $114.99 right now.
It says it has “XMP 2.0 support” but the JEDEC listed on their website is 3200MHz (PC4-25600).
So I does that mean the XMP is just to overclock the RAM above 3200Mhz?
Any thoughts if this is OK to use for the Framework Laptop?
Not necessarily. RAM modules have a default profile and optionally XMP profiles. Nothing really says that the default profile has to match JEDEC specs. For example, take the specifications for KF432S20IB1K2 modules where the default specs are CAS 20. Motherboards that don’t support XMP should use the default profile.
The best way to find out is to find the datasheet for the modules, hope it lists the default profiles, and hope it’s correct. FWIW, I have that Kingston RAM in my Framework.
But that’s another set of numbers that keeps popping up, denoting similar ICs: DDR4-2666 native, DDR4-3200 CL16 by XMP or DDR4-2666 native, DDR4-3600 CL16/DDR4-3200 CL14 by XMP for the higher-end memory ICs.