DELL Inspiron 1564 RAM Upgrade

Dear all,

I'm using DELL Inspiron 1564 Laptop with:

- Windows 7 Ultimate 64bit SP1

- Motherboard Model 0M9XW4

- Chipset Intel Havendale/Clarkdale Host Bridge Rev. 12

- Southbridge HM55 Rev. 06

- BIOS Version A05 (02/09/2010) (factory default)

- 2 RAM slots with 2 SO-DIMMs plugged in, total amount of RAM is 3GB (2GB+1GB) (factory default)

I've read previous posts in this topic and I'm aware maximum ammount of RAM is 2x4 GB.

My question is related to the statement posted here, it states that Intel HM55 Express Chipset requires a specific configuration of memory chips on RAM module:

The problem is that the HM55 chipset does not recognize modules assembled with inserts RAM 512Mx8bits ... having your limit 256Mx8bits.

So make sure that the memory module that will buy your mount has taken 16 tablets 256Mx8bits, otherwise will not work.

I spent a little time so I bought Kingston memories of new models (2x4GB), mounted with 8 tablets 512Mx8bits (4096MB or 4GB) and I had to exchange for Patriot modules with 16 tablets 256Mx8bits.

For the same reason the notebooks that use the HM55 chipset has a maximum of 8GB memory = 2x ((256Mx8bits) x 16) = 2x 4Gb.

Is this true or false for my current state of configuration (chipsetr and BIOS version)?

Does the BIOS and chipset works with 2x4GB where each SO-DIMM module is constructed of 8x512MB and/or 4x1024MB?

I understand newer BIOS version is available for update (version A13, release date 06 Apr 2011), but I haven't made any BIOS updates simply because system is working optimal so far and I'm a "don't_fix_if_ain't_broken" person :-)

If, on the other hand, BIOS update is required for my laptop to work with total of 8GB RAM in configuration 2x4GB where each SO-DIMM is made of 8x512MB and/or 4x1024MB I'm willing to update BIOS to ver. A13, I just need your confirmation on this.

Thank you in advance for your help and reply.

Have a nice day.

Marko.