Hi,
I have just received my Minibook x n150 with 16 gb RAM. I would like to know why the memory speed is set at just 4000 MT/s, as shown in BIOS and in Task Manager. How can I increase that? On N100 the speed is 4800 MT/s.
Thank you for your response.
Interesting. I’m running Linux on my N150, and I see this:
$ dmidecode -t 17 |grep Speed |head -n 2
Speed: 6400 MT/s
Configured Memory Speed: 4000 MT/s
(The output repeats 4 times, once for each bank.)
So, it seems the RAM is 6400 MT/s, but it’s configured to be 4000MT/s. That’s weird.
Nice finding. It’s a pity the cpu doesn’t support the full speed of the RAM.
Anyway, the speed can be changed to 4800 MT/s. The BIOS can be temporarily unlocked, according to this thread Reddit - The heart of the internet. On Linux, you just need to load ec_sys. And set the value of the 240th byte, as in the mentioned thread. Then, in the unlocked BIOS, in the Memory COnfiguration menu, the speed can be changed from 4000 MT/s to 4800 MT/s.
I haven’t seen any stability issues so far, after changing the speed value.
Thanks for posting that link. I’ve reviewed it. I’ve completed nuked Windows, and I’m only running my Linux install. What did you use to modify the byte? dd? I have ec_sys compiled in, and the debug files show up, but … yeah, not something I want to screw up modifying. 
Thanks.
Well, I definitely shaved the yak on this one. I overdesigned and overwrote a script to modify this bit. It’s here: GitHub - greymouser/minibook-x-tools . If others stumble upon this, maybe they’ll find it useful for their Linux systems, too.
dmidecode -t 17 |grep Speed |head -n 2
Speed: 6400 MT/s
Configured Memory Speed: 4800 MT/s
Well … neat-o. Now to see how the system stability holds up at 4800.
Nice work.
Also, it seems that changes are persistent until the battery is disconnected.
I’ve had it reset after a cold restart, but yeah, that doesn’t happen too too often.
You are right, but I was referring to the changes of settings in bios. Like the one for the memory speed…
Oh yeah! Absolutely.
Since the RAM reports – at least on my specific model and machine – that it supports up to 6400, I wonder if I can crank it up more. Not sure where or if there are other limiting factors.
I guess 4800 MT/s is the maximum this cpu supports. I don’t know if this hardware limitation can be overcome..
Ahh, you’re right. Thanks, I didn’t know the right things to Google regarding this.
Specifications for N150 clearly state it - https://www.intel.com/content/www/us/en/products/sku/241636/intel-processor-n150-6m-cache-up-to-3-60-ghz/specifications.html#specs-1-0-2
I’ll take the 4800MT/s over 4000. 
I’m also using it at 4800.
I wonder if there are any settings which could influence the cooling. Does your laptop get very hot on the bottom if you throw something a bit more demanding at it?
I also own a N100 Minibook X, which runs much cooler than the N150 version. At least in my case..
L.E: Thanks for the link with the specifications. I made a confusion between the frequency and data transfer rate. If I understand correctly, 6400 MT/s might be possible.
L.E: Thanks for the link with the specifications. I made a confusion between the frequency and data transfer rate. If I understand correctly, 6400 MT/s might be possible.
Oh, let me know if you experiment with that.
And yeah, I find it can get hot, but not necessarily at a default level (so I don’t think I’d say it “runs hot”) . Just responding here with a browser open, it’s not quite cool, but not anywhere near the hotter side of warm. However, I’m running Gentoo (installed software often compiled as part of installation), and during installs … yeah … it gets rather hot. Not impossible to hold, but I wouldn’t want the laptop on my bare lap.
If I find a way to make the laptop run a bit cooler, I’ll probably try it.
Until then, I’m not eager to add extra heat to the chassis.
You can look for a base with fans
Yeah..I began using a simple stand. Just to lift a bit the bottom of the laptop. But I don’t have the stand available everywhere and all the time.