Need help with old Intel D865PERL memory upgrade

Status
Not open for further replies.

konstantinusz

Reputable
Oct 28, 2016
14
0
4,510
I bought a PC in 2002 and still using it. It is based on the abovementioned mainboard with 2 x 1 Gb 400 Mhz SDRAM. (data sheet here: http://www.intel.com/content/www/us/en/support/boards-and-kits/desktop-boards/000006698.html)

Memory often proves low, in this case heavy swapping occurs to the hard disk and the system becomes inresponsive for minutes. I often have to kill Chromium process from a terminal window.
I have tried Linux package "zram" and even swapping in video RAM (128 MB), but none of them really helped me.

Fortunately I have a few other memory modules either from a previous update or from another, even older, now unused computer. The modules I have:

- 3 pieces of one-sided 256 MB modules (PQI, Q2 and Samsung brands). 1 of them are 400 Mhz and 2 of them is 266 Mhz.

- 2 pieces of 512 MB PQI brand 400 Mhz modules.

- 2 pieces of 1 GB 400 Mhz KingMax brand modules. These latest two are operating together right now, but in single channel mode.

Optimally and preferably I would install the two 512 MB modules, as the motherboard has 4 memory slots, so I would have 3 GB of memory in total. However if not applicable I would be glad with 2768 MB, 2512 MB or even 2256 MB of memory too.

My question is how should I try to upgrade the memory modules? Which modules can work together in any configurations? I don't mind if they operate in single channel mode, or on a lower frequency (320 Mhz, or even 266 Mhz). Data sheet says that I have to remove the AGP graphics card before the installation. Should I then install a PCI graphics card instead of while testing the different memory configurations (fortunately I have one)? System stability is also important, freezing computer is not good. What are the best practices at the memory upgrade process (listening whistle codes, using slots clocest to the CPU, clearing actual CMOS settings by CMOS reset jumper, etc)?
 

voltoid27

Reputable
Sep 17, 2014
609
0
5,660
Honestly you should never need to remove the AGP card before installing RAM; just unplug the PC and press the power button a few times before starting so any capacitors will be discharged. Ideally you'll want to install the 1GB Kingmax modules in slots 1 and 3 (where slot 1 is closest to the CPU) and the PQI modules in slots 2 & 4. You're probably not going to be able to use dual-channel mode at all since your Kingmax modules don't seem to support it. Clearing CMOS after installation but before booting up would be good as well. RAM upgrades are pretty simple, so I'm confident this will work.
 

konstantinusz

Reputable
Oct 28, 2016
14
0
4,510
Thank you very much, I will follow your advice. In fact I have tried the update process about exactly a year ago, but I didn't succeed, I tried different configurations of the modules, but PC didn't start at all, or produced freezes after a while. So I used my PC with the working config of 2 GB of RAM till now.
 

konstantinusz

Reputable
Oct 28, 2016
14
0
4,510
Unfortunately any configuration above 2 GB doesn't work...

1 x 1 GB: works
2 x 1 GB: works
2 x 512 MB: works
1 GB + 512 MB: works
-----------------
2 x 1 GB + 256 MB: system starts and prints: "Entering setup..." but nothing happens then, simply freeze. No whistle codes either.

2 x 1 GB + 512 MB: same as above.

2 x 1 GB + 2 x 512 MB: system doesn't start at all (no post messages, display isn't initiated), and no whistle codes are audible.

It seems this Intel motherboard are tricky, or modules aren't compatible.
Motherboard BIOS was updated years ago to the most recent one, so this can't be an issue.

This Intel motherboard doesn't have a CMOS reset jumper, however it has a legend for it on the mainboard. But the pins simply doesn't exists, there are only welding spots instead of them. However the motherboard has a so called "BIOS config" jumper, namely 1-2 "normal mode", 2-3 "config mode". When placing the jumper to 2-3 position and starting the machine, it automatically enters the BIOS setup.

My two 1 GB KingMax modules aren't identical, they refuse to work in dual channel mode. They work only if they are plugged to the same channel/controller, side by side (eg 1-2, or 3-4). However they have the same brand name and number too, but the end of the number part differs: PNAS and MNAS. They also refuse to work in 266 Mhz mode, but they works in 320 (333) Mhz mode.

Maybe I should buy 2 x 1 GB of KingMax memory and upgrade to 4 GB. Unfortunately they are expensive enough, 2 x 1 GB costs about 60 USD in my country.

 

konstantinusz

Reputable
Oct 28, 2016
14
0
4,510
Finally I bought 2 x 1 GB of KingMax memory. When I get the moduls it turned out they are not identical to the existing ones. Main numbers passes, but the end doesn't. New modules: MPXD42F-D8KT4B NFAR
Older modules: MPXD42F-D8KT4B PNAS

When I tried to install them computer didn't started at all. By exchanging modules in the slots I could achieve that PC starts, but only with 3 GB of memory installed. When I install the additional 1 GB of memory, PC doesn't start again. However the surplus modul isn't malfunctioning, because when I plug it in my another computer it works.

Strange situation, can anyone give me an advice?
 
Status
Not open for further replies.