Dell Inspiron 15 3521 Ssd Upgrade

[Cristoforo Kanoy]

Ihave a Dell Inspiron 15 3521 with a 4GB of RAM and I tryed to upgrade it to 6GB but the Computer became having some bugs from time to time and accourding to friends they told me that the motherboard of My computer doesn't support more than 4GB of RAM is that true ??

But mine did work. 4gb + another 8gb =12gb ram. Its work very well and faster compared to just 4gb alone. It started becoming slower when i started trading, opening lots of charts and trading platforms at the same time. So i have now decided to upgrade the the hard drive to an ssd, 500gb ssd to see how that will help out. Im pretty sure it will. But i also want to confirm if i can upgrade the cpu to an i7 core from i3. Saw that it will be possible but they said the speed will differ which got me confused. Ill upgrade to ssd and see what happens and if that can handle my heavy workload on this fragile laptop then i wont bother upgradig the cpu.

But im told the max memory for dell 15 inspiron 3521 is 16gb. 8+8. I could have upgraded mine to that but i decided to add another 8gb to the existing 4gb now making it 12gb and still works fine even much faster than before. My only concern is the cpu. Which when i saw a compatible i7 core motherboard they said it is compatible but the speed will difer..i,e it wont still run faster as the new i7 is installed..still not clear about that. can you pls explain better, how this will differ if an entire motherboard is changed to an upgraded i7 compared to i3??

But im told the max memory for dell 15 inspiron 3521 is 16gb. 8+8. I could have upgraded mine to that but i decided to add another 8gb to the existing 4gb now making it 12gb and still qorks fine even much faster than before. My only concern is the cpu. Which when i saw a compatible i7 core motherboard they said it is compatible but the speed will difer..i,e it wont still run faster as the new i7 is installed..still not clear about that. can you pls explain better, how this will differ if an entire motherboard is changed to an upgraded i7 compared to i3??

My Dell 3521 came with Windows 8. I recently upgraded it to Windows 8.1, but since then it is using Intel HD onBoard graphics. I installed the latest drivers for amd but still it picks onboard graphics card only. Also the AMD Catalyst Control Center crashes after every restart. Is there any way to make use of both?

What you need is graphics drivers from Dell. AFAIK AMD does not bundle Intel drivers with its graphics driver installer and Switchable Graphics functionality can also be missing completely with those or it just doesn't work when drivers are installed separately.

Note: this is based on memories from about a year ago when I had to deal with this sort of situations on daily basis. Officially only solution was to use drivers provided by OEM, in few cases where CPU was actually AMD APU did AMD drivers work directly.

Install DIMMs starting furthest from the processor.Do not install DIMMs if the corresponding processor is not installed.If only one processor is installed in a two CPU system, only half of the DIMM slots are available.To maximize performance, balance the total memory capacity between all installed processors.It is not required, but it is recommended to load the channels similarly if possible.

IT buyers come from all walks of life. Some purchase by OEM part number. Some purchase by original module part number. Our goal is to give you confidence when purchasing Dell Inspiron 15 3521 upgrades. All modules listed are qualified to work in your Dell Inspiron 15 3521.

Whether you are looking to configure your Inspiron 3000 15 - 3521 yourself or upgrade it, equipping a device with sufficient RAM is one quick and easy way to ensure smoother and more efficient operations. You will find RAM installation guides and other useful information on our RAM and hardware blog.

I have a problem with the laptop fan working constantly, which is annoying and disturbing. It has to be due to a system configuration, because I am coming form the other distro, where problem didn't exist. Also just after arch installation the fan was working fine (meaning in intervals, not constantly). It's just broken recently. The temp. is fine, around 50 degrees with medium load (browser, mplayer).

1. Set up lm_sensors

2. Remove it from autostart (or not configure it to autostart, but I'd rather remove it later, just to be on the safe side)

3. Load modules manually to /etc/modules-load.d/load_these.conf However, I am worried that I see only coretemp. Just seems that something is wrong.

4. See if default /etc/fancontrol is ok. If not try to configure it, as explained in wiki. _speed_control

5. Do not run /usr/bin/fancontrol as I have Dell Ispiron ? Install instead i8kutils? See which is better/working at all?

6. Enable working solution from 5.

Ok, I got fancontrol running, booting properly every time. Just had to load ik8 module. But the machine is still loud. I was sure it must've been the fan, but now I am getting confused. That's the sensors output:

I am sorry to drag that issue, but It's a quite big problem for me. I realize that previous post are not proper, and I should've educated myself better. I read and googled a lot, but still can't figure what to do next. Please help.

Using i8k I set fancontrol, and It's working (done the manual modules loading to prevent systemd boot issue)

Now the rpm for my fan is ridiculous when the fan is on (I mean on software wise, because it's working constantly)

-1 entry is not even in the man page. What does it mean? It's the left one, the usual cpu one. And the other one is switched off, which is consistent with sesnors output (while sensors give RPM speed i8kctl gives 1 for the right fan) . But like I said, it's fanning all the time, constantly. The other thing is that this laptop, to my limited knowledge has got one fan.

It seems you can control the fan speed. To confirm that try change the speed with 'i8kctl fan - 2'. If that is ok, you are almost there to autocontrol fans with i8kutils. The next step is a case of configuring the threshold values at '/etc/i8kmon.conf'. One example of the file is below.

I am in more confusion though. I booted live ubuntu and arch (the one I made install with) and they both worked fine, normal fan work. I examined their kernel modules and deamons - there is no ik8 or fancontrol. It seems like the fan control is done by kernel and udev by default in Ispiron 3521 (I got it with ubuntu preinstalled, then I had debian on it for year, no weird sound issue whatsoever). The one difference is the kernel update I made on the arch some time ago. Unfortunately I didn't catch the exact moment when the noise issue started (music and video and so on), but It happend after the upgrade. I am now running 3.15.8-1-ARCH and I installed 3.15.3-1-ARCH.

Now I am not very good with the hardware, hence the question. Is there any other part of the laptop, that might sound like a fan while not properly configiured or handled by the driver? The constant sound I am getting now is not fan going at full speed (the speed from pwmconfig). Its more like faint and distant one, but definetly you can hear it. Is it, by any chance, possible that its HDD?

I can confirm that any of that software isn't running on both live systems (ubuntu, arch). I made snapshot of running deamons and kernel modules, I can post it, If that would be of any help. From what I can read and pinpoint to the cooling department, there is coretemp and hwmon.

Google shows it as pretty common one.

The thing is I've been testing i8kctl fan switching from 0 to 1 and 2. I can now see that the constant noise is somehow aside from the fan. Its allways there, and while I turn fan to 1 I can hear silent fan in the background. Obviously when I swicht the fan to 2 the fan noise is the loudest. The actual sound I am dealing with is more like hum, or very distant buzz. I am sorry I didn't provide this info erlier, but I only noticed it now.

And an interesting software monitor for fan control to this laptop is the one below. It uses the i8k kernel module, so it has the same functionality as i8kmon. I put this link just to say that this model needs fan control, but I do not know if it works well, I suggest i8kmon if it is the case as a monitor.

You cannot close threads, but I can

If you wish a thread closed, please use the report function. Also, I generally would suggest you use that mechanism to request a thread be moved. I can understand why you did not just want a move in this case.

Nothing is too wonderful to be true, if it be consistent with the laws of nature -- Michael Faraday

Sometimes it is the people no one can imagine anything of who do the things no one can imagine. -- Alan Turing

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I bought a new laptop battery but the device does not recognize it and does not charge it.my device:laptop dell inspiron 15 3521bios-release-date:07/31/2015os ubuntu:22.04I tried to update the bios with usb but there is no option bios flash update.I need help please help me

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