Celeron G3900

[cyring]

@svmlegacy
Thank you for your Celeron addition in the Wiki

There are things to learn from, like:

• HWP showing zero values although it is enabled
• Missing extended DRAM timings
• No MWAIT/X although it is Skylake

I suggest you try latest version or develop branch. Fixes are available.

[svmlegacy]

I'll get a proper install of a distro on this machine to accomodate. This was using the Arch Linux bootable ISO as it doesn't currently have a disk

[svmlegacy]

Celeron G3900
Arch Linux Bootable ISO here
1.86.0 master branch here
1.86.2 develop branch here

Wiki G3900 link updated to 1.86.0 master branch

[cyring]

Between old version within ISO and latest master or develop, I don't read same DRAM main timings:
15-15-15 vs 16-16-16
I wonder if it is a code regression or improvement.
Which timings do you believe is accurate ?

[svmlegacy]

I believe both are accurate, as the memory configuration changed between the ISO and the latest versions.
At 2133 MHz the first module I used is CL15, and the added module is CL16 at the same speed.

Seems like the motherboard is picking the looser of the two, and running both at CL16.

[cyring]

Issue: DIMM geometry can not be the same with 8 or 4 GB stick
Fortunately some bits provide us the DIMM size but the standard equation is not verified:

8 × Bank × Rank × Rows × Columns = Size