The big question is what has Framework already tested and are installing in AMD mainboards.
Personally thinking the Crucial ones will work since they list only one timing in their spec sheet
I got these at a good price on prime day
I don’t know much about ram, will these be good?
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In the customer reviews they complain that the RAM uses 4800 when the Mainboard doesn’t support XMP.
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do we know yet if the AMD board supports xmp?
XMP is not supported on AMD boards as XMP is Intel specific.
Framework recommends JEDEC timings.
Source: Can anyone confirm if this RAM kit would work on the FW16? (7840HS) - #11 by nrp
I’ve been reading through the reviews and I’m not seeing people complain of this? I’ll look into it more but every review is saying they work as advertised.
Earlier I said i was getting the G.Skill set. The spec sheet was a bit misleading and quite vague. The “default” speed was the same as the XMP speed. I’ve decided to cancel that order and get the Kingston set instead. The spec sheet for Kingston clearly states that you get the default JEDEC timings for plug-and-play.
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I think KVR56S46BD8 (Kingston ValueRAM) should work fine too.
I’m personally interested in the Kingston Fury as it has lower timings and it also seems to fallback to JEDEC. At least they mention JEDEC in their specification PDF.
I am getting those ram modules.
G.Skill
F5-4800S3434A16GX2-RS
Single stack
4800mghz
1,1V
CAS Latency (CL)
34
RAS-to-CAS-Delay (tRCD)
34
RAS-Precharge-Time (tRP)
34
Row-Active-Time (tRAS)
76
Should be OK.
Regarding the Crucial, Crucial’s listed speeds are only ever their JEDEC speeds afaik, here’s a quote from their website regarding why XMP/EXPO is advertised/available. I would hope framework designs their system in such a way to avoid this downclocking since EXPO is not supported.
For DDR5 modules, system-level downclocking due to a combination of BIOS, CPU, and memory architecture can, for example, result in DDR5-4800 running under DDR5-4000 specifications until XMP/EXPO is enabled.
Here is the latest on Framework Laptop 13 (AMD Ryzen 7040 Series) DRAM compatibility. Testing is ongoing.
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Full ECC support is not currently confirmed as compatible with non-PRO Ryzen 7040 Series mobile processors.
That seems to directly what AMD says on the product pages for the 7640U, 7840U, 7840HS, and 7940HS (all the Ryzen 7040 Series CPUs that Framework offers).
Those pages all say that the DDR5 variant (not the LPDDR5/x variants) of the CPU support ECC if the platform supports it:
ECC Support: Yes (FP7r2 only; Requires platform support)
Am I missing something or are Framework and AMD sharing contradictory information about AMD CPUs?
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Hello everyone.
I preordered a FW laptop 16 last month, and have bought the Kingston Fury Impact 32 GB (2 x 16 GB) 5600MT/s DDR5 CL40 for my setup.
I wanted to ask if anyone has already got their laptops and checked the compatibility with that memory kit, or if maybe the FW team has done something alike.
Also, I think it would be helpful if they listed memories tested by users that worked.
As a heads up, that kit appears to be an XMP profile for 5600MT/s. The reviews point to it defaulting to 4800MT/s for non XMP supporting machines. It’ll probably work, just at the lower speed as framework does not appear to be supporting the profiles this time around either.
The relevant footnote from the horses mouth:
- Kingston FURY Plug N Play memory will run in DDR5 systems up to the speed allowed by the manufacturer’s system BIOS. PnP cannot increase the system memory speed faster than is allowed by the manufacturer’s BIOS. Kingston FURY Plug N Play DDR5 products support XMP 3.0 specifications so overclocking can also be achieved by enabling the built-in XMP Profile. PnP is only featured on 4800MT/s and 5600MT/s speed modules.
the G.Skill equivalent is a bit more murky:
Tested Speed (XMP/EXPO) 5600 MT/s
Tested Latency (XMP/EXPO) 40-40-40-89
Tested Voltage (XMP/EXPO) 1.10V
SPD Speed (Default) 5600 MT/s
SPD Latency (Default) 40-40-40-89
SPD Voltage (Default) 1.10V
I’m confused now.
The Kingston datasheet I mentioned in the topic start does not mention XMP profiles.
KF556S40IBK2-64.pdf
Are there differences?
Kingston seems to market PnP as their own custom alternative to JEDEC or XMP/EXPO. They claim that PnP should be plug and play like JEDEC, however at faster speeds.
In practice it seems like PnP is only advertised at speeds that are also possible with JEDEC, so I suspect PnP is just Kingston’s marketing term for higher JEDEC speeds.
That indicates that if the BIOS limits the maximum speed of PnP/JEDEC ram (most older systems are capped at 4800 MT/s) then it also supports XMP so that if the BIOS does allow XMP then the user can enable XMP to override the BIOS’s speed limit.
To me that sounds the same. JEDEC at 5600 MT/s cl40 and in case the BIOS doesn’t allow that default speed but does allow XMP/EXPO it also supports XMP/EXPO at the same 5600 MT/s cl40.
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