Adding RAM to Dell Inspiron 2650
Posted 26 September 2010 - 07:59 AM
Posted 26 September 2010 - 08:22 AM
It also shows 2 ram slots with a maximum capacity of 256 megs in each for a total of 512 megs of memory.
You will also see the recommended type of memory that your system needs. Is what you have that kind?
A bios upgrade is never recommended unless it is needed to fix a issue or add some type of upgrade like going from SATA 1 to SATA 2.0
The system being at least 8 years old is ancient by todays standards. The hd alone is not even offered anymore new. Most vendors are offering nothing less then a 40 gig and in most cases 80 is the minimum standard now.
Posted 26 September 2010 - 05:52 PM
Posted 26 September 2010 - 06:09 PM
512 total memory is low by todays standards but if it serves the purpose you need it for then nothing wrong with keeping it.
Posted 29 September 2010 - 09:15 AM
Posted 29 September 2010 - 10:18 AM
Posted 29 September 2010 - 01:14 PM
Posted 21 April 2012 - 07:19 AM
I read the "release notes" that came with a version of the ACY13 BIOS. It mentions that the 512MB limit is enforced by the BIOS in an earlier revision (earlier than CY13102A.ROM). I flashed this BIOS onto a Inspiron 2650 mainboard - it will work just fine (here's another clue - the 2650's mainboard ID is "ADY13"). I even recorded a (low res, blame the crappy phone) video of me flashing the BIOS: YouTube link. I have attached said "release notes" file so that you get an idea of where my source is on this revelation. Edit: attach failed, here's the text file in a pastebin: link
Given that the coreboot (an open source BIOS) wiki says that the BIOS is responsible for initializing the memory controller as part of system startup (and that the system has zero bytes of usable RAM until that's done), the RAM limitation is enforced by the BIOS. The hardware alone is capable - I've also read a report of Inspiron 2650s taking 1GB sticks, aside from my own experience. So, the question is whether or not I can get a dump of the BIOS from the old motherboard. I am considering desoldering the EEPROM chip and transplanting it to the new (Inspiron 2650) mainboard, throwing in a gig or so of RAM, and see if it boots. If it boots, I'll use PHLASH to dump the BIOS and upload it for those looking to break the 512MB RAM barrier. Just note that the old BIOS will probably introduce other bugs (like you'll find yourself limited in the hard drives you can use), which is the cost of more RAM. Oh, you'll lose the Dell logo bootsplash, to be replaced with a generic Phenoix BIOS logo (as seen in the video above)
Note: I've written device drivers. I know how hardware works at a low level.
Edited by Kirn Gill, 21 April 2012 - 07:31 AM.
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