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fircroftstar
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20 Posts
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963970
June 9th, 2011 09:00
Optiplex GX620 memory limitation
My GX620 currently has two 1GB memory modules but as I now have Windows7 64-bit, what is the maximum memory I can install?
The upgrade section says 4GB (with the warning that a 32-bit OS will see less than this) but since a 64-bit OS can see more than 4GB (my Studio XPS has 6GB) why can't I fill the slots with 2GB modules?
16506
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Posted June 9th, 2011 12:00
Hi Fircroftstar,
Yes, your system can use 2GB modules in each slot.
16506
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Posted June 9th, 2011 14:00
So the GX620 will recognise and access 8GB under 64-bit Win7?
16506
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Posted June 10th, 2011 00:00
The GX620 will support 2GB max per slot, but the combined total of all slots cannot exceed 4GB.
Hope that clears things up.
16506
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Posted July 15th, 2011 10:00
i have the same question as i have installed 8gb in my optiplex gx620 tower the bios v A11 sees it but the os wont boot past the start screen
16506
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Posted December 1st, 2012 10:00
So your answere is up to 8GB for window 7 64bit?
16506
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Posted February 19th, 2013 07:00
I have a GX620 with 4GB of memory, but it only uses 3.5GB...
16506
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Posted February 19th, 2013 07:00
I have a GX620 with the same issue. Windows 8 is reporting that roughly 512mb is reserved for the system, leaving 3.5gb free.
This is an Intel issue and it's their hardware that is reserving the memory.
3029
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Posted April 21st, 2013 11:00
Aye, and this occurs with 64-bit operating systems, too. (Mine is configured with Windows 8 Professional 64-bit.)
16507
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Posted April 21st, 2013 11:00
You lose RAM to the integrated graphics and other internal uses based on the hardware design. The 3.5 Gig is user-accessible, the system sees all 4 Gig of installed RAM, but takes some of it for internal uses...
speedstep
11 Legend
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46969 Posts
16506
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Posted December 1st, 2012 15:00
The GX620 can support 2 gig modules. With 4 memory slots and a 64 bit CPU and OS it will see 8 Gigs of Ram in bios but you cant use 8. You can only use 3GB or 3.5GB. You CANNOT utilize more memory than 3.5 Gigs even when you install a 64-bit version of your OS This is a GX620 Limitation. Models with Pentium D also support NX and the other requirements for Windows 8.
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