Re: Install 4GB into laptop whose manufacturer claims 2GB as MAXIMUM
- From: "Eric" <someone@xxxxxxxxxxxxxxxxx>
- Date: Fri, 19 Jun 2009 11:02:35 -0400
Yes
When they say "max 2 GB RAM", they mean the RAM types supported by the MB
only go up to 2 GB for the total amount possible from the number of chips
possible at the time the PC is released. If they later release a larger RAM
chip of a speed that is compatible with the MB, the max possible RAM for
that PC increases, and they will not likely update the specs.
There is a max 3 GB RAM for any PC which has a 32 bit CPU or a 32 bit OS.
This is remotely related to Vista, since there is a 32 bit Vista and a 64
bit, but this should probably be discussed in a hardware specific forum.
"JEWboy" <Nojunkmetalblade@xxxxxxxxxxxxxxxxx> wrote in message
news:uVLAbZO8JHA.5424@xxxxxxxxxxxxxxxxxxxxxxx
Now as an Electrical Engineer I proved this point and upped my HP to 4GB
w/3.25GB usable:
If your chipset is Intel945 - as in my HP dv8408us & MANY NEWER HP laptops
(Pavilions/MediaCenters), ignore HP claim of maixmum memory = 4GB.
You can install 2GB+2GB sticks, you'll get 3.25GB usable by Windows, I
know you waste about 1GB but it still makes sense. Intel945 chipset is
hardwired for 32-bit adddresses so Windows whether it be 32 or 64bit is
not a limitation, it's the chipset which is a limitation, STILL it can
address 4GB, not 2GB as HP claimed on my laptop specs. I've done the same
with IBM Thinkpads, where they claimed 512MB to be max 5 years ago, but I
was running with 1GB. It appears idiots sometimes write these specs
because 2GB laptop SDRAM modules were unavailable at that time at
reasonable price/pinout?
By the way if your Windows is 32bit - that is a software limit at 4GB,
chipset - is a hardware limit. Th eoverall system limit is obviously
SMALLESt of these numbers.
The only way to use over 4GB is if both hardware + Windows are 64-bit, AND
BIOS is updated.
Also the trick above may give you BLUE SCREEN of DEATH if your HP laptop
BIOS is not latest, and you never get full 4GB due to memoryhole in older
laptops, and I/O overhead which wastes 0.7GB
I use strictly CORSAIR memory - not their Valueselect series, but regular
Corsair - made in Colorado, CA, world's top speed/US-designed/US-made
maker, with their valueselect line outsourced to Taiwan but regular still
made in USA. This is in the same class as QCZ & Mushkin, etc but made in
USA with all premium manufacturing/semiconductors/quality. They continue
mislabel some SDRAm modules as "for Mac", but they're dual Mac/PC since
Apple is using Intel chipsets now, that is one problem with Corsair they
didn't listen to my complaint and lose revenues when nontechnical people
don't realize what Corsair labeled as Mac, is for PC.
So 3.25GB here on a laptop claiming to be 2GB max. I can appreaciate
extra 1GB+ (55% increase!) for CAD & Engineering simulation wares som eof
which list 8GB as 'recommended"
(Autodesk Inventor2010 Profressional with assemblies over 5,000 parts,
Agilent ADS RF simulation suit - wants quad core, 8GB)
.
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