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Installing more RAM

I am installing mor RAM MEMORY to my PC
I currently have 515mb in the first one of 2 Blue slots
There are 2 additional black slots with nothing in them
which slots do I use.
Ray Smith

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  • raymon99 Mar 13, 2008

    I have already tried putting the 2 additional 512mb memory modules in the 2nd & 3rd slots, ie 2nd Blue one and 1st black one, and the PC will not start-uo.

    I have also tried 1 additional one in the 3rd slot, ie 1st Black slot, and also 1 additional one in the 4th slot, ie 2nd black slot with the same result

    Ray smith

  • raymon99 Mar 13, 2008

    The model is an HP

    The Model No. is EC548AA-ABU a1128uk

    The Serial No. is CZB5350HHB G8530

    The Memory speed I am trying to fit is PC3200

    I got this from the information in PC Doctor

    Ray Smith



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It does not matter, but for the sake of me being kinda of neat freakish, I use the one closest to the allready filled slot

Posted on Mar 12, 2008

  • 1 more comment 
  • Steve Bryant Mar 13, 2008

    are you sure it is the right speed of memory?  Make sure the memory is correct speed. What is the exact model of your computer?

  • Steve Bryant Mar 13, 2008

    What is the exact model of your computer? Did you make sure you got the correct speed?

  • Steve Bryant Mar 13, 2008

    I would take it back. The not turning on signifies a bad memory module. Return the memory and get a different stick



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Alert! unsupported memory configuration. Please populate DIMM1

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Top view of motherboard, scroll down. (Thought you might also like to read the reviews, and Comments)

Motherboard User Manual,

1) On the motherboard the Blue ram memory slot that is closest to the copper heatsink, is ram memory Slot 1.
Also known as DIMM 1.

Ram memory ALWAYS has to be in this ram memory slot.
The Processor reads ram memory Slot 1 first.

2) The Blue ram memory slots are Slot 1 (DIMM 1), and Slot 3.
(DIMM 3)
The Black ram memory slots are Slot 2 (DIMM 2), and Slot 4.
(DIMM 4)

To run Dual Channel ram memory, means there are two LIKE ram memory modules ('Stick'), and they are installed in the SAME channel.

This would mean to alike ram memory modules, in both Blue ram memory slots, or both Black ram memory slots.

Since the ram memory modules need to be alike, they are generally purchased from the same manufacturer, and are the same kind.

Running ram memory in a dual channel configuration, is supposed to increase ram memory 'speed', up to 30 percent.

This is Baloney!
May look good on paper, but in actual use in the field it's cr@p.
Actual performance increase is more like 1 to 2 percent.
This has been proven by Tom's Hardware, and many, many motherboards, ram memory, Processors, etc.

So you have 2GB of DDR2 Sdram, huh?
Is it just one 'stick' of ram memory, or are you referring to two 1GB sticks?

If the above holds true install them in Slot 1 and Slot 3.

If not, and it is a 2GB stick of ram memory, be sure it is installed in Slot 1 (DIMM 1)
Install the 1GB stick in Slot 2.

It isn't the same as the 2GB stick.
It is 1GB.
Does NOT go in a dual channel configuration.

(Catching all this? There is NO dual channel ram memory!

It is ram memory that is -> ALIKE, and used in a -> dual channel configuration.
Used in two separate ram memory slots, that support the dual channel configuration.

Sold with the advertising scheme of 'Dual Channel', but really just means the two ram memory modules, (Or four), are -> alike.

1) Same Voltage used
2) Same Ram Timings
3) Same Chip Configuration
4) Same size in amount
5) Same frequency rate ('Speed')

With ram memory in a dual channel configuration, the ram memory modules team up on the task.)

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Yes, provided;

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B) The Maximum Amount for each Ram Memory slot is at least 1GB.

C) The first blue connector is ram memory Slot 1. (DIMM 1)

The Processor 'sees' the Ram Memory in Slot 1 first.
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ALL ram memory must be the same 'speed', (Frequency Rate), or the slower ram memory 'speed' will be used.
If there is too much of a difference it may not work at all.

Ram memory needs to be 400MHz, or 533MHz, for your computer.
{DDR2 Sdram at 400MHz = PC2-3200
DDR2 Sdram at 533MHz = PC2-4200 (Also known as PC2-4300)

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no it does not support ddr2 ram.
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RAM has to be

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