INSTALLING RAM

I have two DIMM slots and three SIMM slots.  I have 32MB SDRAM in one DIMM slot.  If I put 32MB SDRAM in the another DIMM slot and later want to upgrade.  Can I use one of the SIMM slots?  

Microsoft Windows 98 4.10.1998
AuthenticAMD AMD-K6(tm) 3D processor
32MB RAM
68% system resources free
Windows-managed swap file on drive C (732MB free)
Available space on drive C: 732MB of 3234MB (FAT32)
RVINES2Asked:
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cmcgeeCommented:
3 SIMM slots?... SIMMS are usually in pairs, I dont understand the 3rd slot...

Usually If you have a motherboard with mix/match SIMM/DIMM slots, when you use Slots in the DIMM, you cannot use the SIMM slots. However, I have seen some boards that allow both to exist (I wouldnt do it personally)



Craig
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OttaCommented:
The answer depends on the motherboard.

Most often, you are advised to *NOT* "mix" SIMMs and DIMMs.

However, I just built a computer using a Soyo motherboard, and it explicitly allowed SIMMs, in bank *ONE* (SIMM slots 3 & 4) together with a DIMM in the sole DIMM-slot, as long as SIMM slots 1 & 2 were left empty.

If you want to upgrade, find somebody to buy your "old" 32MB DIMM(s), and just buy 64MB DIMM(s).  
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RionCooperCommented:
Q. Do you know what type of motherboard you have.  etc brandname and style.  This would be easy to look up on there home page.  If it is not on there page they should have a place to e-mail there tech support.  I also do not think you should plan on being able to do this, nor would I.
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sstvpmCommented:
Hi,

All U have to consider is 2 things:
1.  Does any "Invalid Pagefault" or "This performed illegal operation" errors      comes when U mix the SIMMs and DIMMs.  i.e. any mismatch between      them.
2.  Ur motherbrd must support the co-existence of SIMMs & DIMMs. Check      UR Motherboard's manual for that, before proceeding.

If both the cases proves positive, then

Your Advantage:  Upgrading becomes easier. You'll get more memory without upgrading your motherbrd.

Your Disadvantage:  Usually DIMMs are faster than SIMMs.  But if you mix DIMMs (i.e. 100 Mhz speed) with SIMMs (i.e. 75 Mhz or even lower speed), the speed of DIMMs will be reduced to that of SIMMs.  Thus performance will be affected.

Solution:  As we are moving towards upside, Better upgrade your system with DIMMs. Donot go for SIMMs which are becoming obselete. Use
*   2 x 32MB =  64MB
*   1 x 64MB + 1 x 32MB = 96MB
*   2 x 64MB = 128MB
*   1 x 128MB = 128MB
*   2 x 128MB = 256MB


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OttaCommented:
SSTVPM, welcome to Experts-Exchange
(First Login: 1/28/00).

Please do not plagiarize comments from other experts:

>> The answer depends on the motherboard. Most often, you are advised to *NOT* "mix" SIMMs and DIMMs.

and then claim them as an "answer":

> Ur motherbrd must support the co-existence of SIMMs & DIMMs. Check UR Motherboard's manual for that, before proceeding.

This is considered to be inappropriate behaviour within Experts-Exchange.
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