Question about HP Pavilion a305w (DM181AR) PC Desktop

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I ordered new memory modules for my hp a305w desktop and need to

The memory modules that i bought are 1 gig

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Your HP Pavilion can support up to 1GB of memory. PC2100

Posted on Jan 22, 2009


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What's your problem?bit ix38 quad gt motherboard with 2 gig of ddr2 ram i want to add a 1 gig stick of more ram that ive bought how do i do this? thanks windows seven

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.)

For additional questions please post in a Comment.


Oct 31, 2012 | Computers & Internet

1 Answer

Memory support

  1. 2 DIMM memory slots (supports up to 2GB memory)
  2. Supports 1.8V DDR DIMM
  3. Supports DDR2 533/400 DIMM

Note2: Use of a Double-Sided memory module (the single chip is 512 Mbit) is required if you wish to install a 1 GB memory module

Only supports one gig per slot...

Mar 21, 2012 | Gigabyte GA-8VM800PMD-775 Motherboard

1 Answer

I have intel d845gvs1 motherboard with P4 2.4 ghz, Currently have 2 ram (512mb & 256 mb) how much further can i upgrade the ram, 1GB or 2GB also is the current combination of ram is right?

"Supports up to 2 GB of system memory with DIMMs utilizing 512 Mbit
technology DRAM devices"-intel

you can use 2 sticks of 1 gig apiece to get to 2 gigs of total memory, but you have to make sure that the ram sticks use "512Mbit " technology.

the 512Mbit technology refers to the arrangement of memory chips on the ram cards. a card which uses 64Mx8 (8 seperate memory chips of 64M apiece) would be appropriate.

"Nearly all motherboards only recognize 1 GB modules if they are low density 64M×8 modules. If high density 128M×4 1 GB modules are used, they most likely will not work."-wikipedia"

Oct 27, 2010 | Intel D845GVSR Motherboard

1 Answer

Can I install a 2 GIG memory module in Memory slot 3 if I have 1 GIG modules in slots 1 & 2

You should be able to do so.
However most manufacturers recommend installing pairs of matching RAM.
This is to take full advantage of the dual processor...

Aug 24, 2010 | Abit AN52 Motherboard

2 Answers

Is there any problem if i install a single 2gb memory at one slot on my acer aspire 4315?

max ram per slot is 1gb, for 2GB total. A 2 GB module will not work

Apr 03, 2010 | Acer Aspire 4315 Notebook

1 Answer

Want to increase memory above 1 gig. compaq nx9010

You may have incompatible memory module. Just put in one memory module in at a time to see if it boots up, this will determine which module was not compatible.

Nov 15, 2008 | HP Compaq nx9010

1 Answer

RAM Recognition 835GM PC Desktop

the memory is dual channel, so you have to use matched memory for it to work 1gig in each slot if possible, check the 1 gigs and 512's to see if they run at the same bus speed, if they are not matched there is your problem try a gig and a 512 in slot 0 to see if it picks the memory up, also there is sometimes an option in the bios to dissable dual mode

Sep 18, 2008 | Gateway 835GM (835GH) PC Desktop

1 Answer

Howdy, help up grading memory

The simplest way to make sure you are buying the correct memory for a machine is to use the memory configurators at or

Jul 25, 2008 | HP Presario V6305NR PC Notebook

3 Answers

Ram upgrade

In order to see how many MHz is your desktop, please right click on your "My computer" icon and select "Properties" from the menu.
It will open the system properties window. select the tab "general" and you will see how many MHz is your desktop.

If you have found this solution helpful please rate it as "solved", otherwise please ask here again.

Thank you :)

Oct 12, 2007 | Computers & Internet

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