Question about R.A.M. Computers COMPAQ PRESARIO ATHLON 900MHZ 128 RAM 40GB HD WITH CDRW (CPQA900CDRW) PC Desktop

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RAM memory in a Presario computer

My Presario HP computer can take up to 2 gigs of ram.  Do I have to have equivilent ram chips in each slot or can they be uneven?

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  • bill664 Nov 14, 2008

    Thanks, but here's the next problem. I already had 250 mb of ram in the computer and I installed a 1 gig chip. But the readout on the computer says I now have 865 mb of ram installed. What gives?

  • bill664 Nov 15, 2008

    I'm using the memory calculator built into the computer. In the control panel there is a line that says, "Show how much Ram is on this computer?" When I click it, it shows 895 mb. I must admit, after installing the new RAM the computer is about ten times faster. I'm basically a MAC person so this PC stuff is really foreign. MACS are so straight forward. Thanks for your help, whomever you are.

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Thanks, now here's the next question. I have 250 mbs of RAM in the computer and I added a 1 gig chip. Now the memory calculator says there are 865 mbs of RAM installed in the computer????

Posted on Nov 14, 2008

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I agree with iwillfixit

Posted on Nov 14, 2008

  • Lee Hodgson
    Lee Hodgson Nov 14, 2008

    are you usuing the on-board graphics?

  • Lee Hodgson
    Lee Hodgson Nov 15, 2008

    it sounds to me like the system is sharing memory for the graphics, there is an option in the bios where you can limit the amount of shared memory, from what you say its using 512 of system memory all you need is 256 that should boost the pc's performance

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Hello,

No, it does not matter what size ram modules you have installed, aslong as they are supported by the laptop.

You can have 128MB on one slot and 1024MB on another for example, but these days its more common to have sizes like 1024MB and 2048MB. As long as the size and speed, type is supported it will work.

Thank you,
I will fix it!!

Posted on Nov 14, 2008

  • Sorry what memory calculator are you using? that doesn't sound like a valid amount of memory look at the size of memory the computer setup - bios showsn to get into bios you need to press the a button, the computer will notify you when you power up what button to press to enter the bios.

  • Ok, its most likely that the missing amount of memory is shared, and is being used by your video card.





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Fiteed new quad core CPU and 4gb of Ram, when started up getting no signal detected on the monitor. Can anyone help?


Let's back up a second.

A) What HP model is it? (P/N. Product Number. Back of desktop computer tower)
B) What model number of Intel quad core is it?
C) What are the manufacturer ID number/letters on the ram memory module/s?

I need to know what Northbridge chip is used on the motherboard, to know if it will support the particular Intel quad core you're trying to use.
This I can hopefully obtain from HP Support, by looking at the specifications for the motherboard.

(This technology does not apply to motherboards that support the Intel Core i3, Core i5, Core i7, and Core i9 processors)

The Northbridge chip is part of the motherboard chipset.
So aptly named, because on a desktop computer motherboard it sits to the 'North', for one.
(Under the Processor)

[ Chip and Chipset are slang terms for I.C.
Integrated Circuit,

http://en.wikipedia.org/wiki/Integrated_Circuit

The Northbridge chip handles the faster capabilities of the computer.
It handles the Processor, Ram Memory, and High-speed graphics.

AGP and PCI-Express are high-speed graphics technology.
A graphics card plugged into a PCI slot, and Integrated Graphics, is Not high-speed graphics.

The Southbridge chip handles the slower capabilities of the computer.

Motherboard Diagram;

http://en.wikipedia.org/wiki/File:Motherboard_diagram.svg

List of Intel Chipsets, and more specifically the one's that can handle Intel quad core processors,

http://en.wikipedia.org/wiki/List_of_Intel_chipsets#Core_2_chipsets

Secondly;
Make sure the Ram Memory you installed is Compatible.
If the motherboard supports 4GB of ram, make sure it is in the correct ram slots if using two sticks of ram, or four sticks.

There HAS to be a ram memory module ('Stick') in Slot 1. (DIMM 1)
EACH ram memory slot has a Maximum Amount.

For example if there are 4 ram slots, and the Maximum Total Amount of ram memory is 4GB, each ram slot may have a maximum of 1GB.
It may, or may not be that you can use Slot 1 and Slot 2, and use two 2GB sticks.

Third:
Always go slow when upgrading.
Install the Processor first, boot the computer up, see how it works.

THEN shut the computer down, unplug from power, observe Anti-Static Precautions, and install 2GB of ram memory.

Works?
Install the other 2GB.
BIOS has to recognize the changes.

Fourth:
Are you sure your Power Supply is adequate to support the quad core, and the added ram memory?

Post back in a Comment.

Regards,
joecoolvette

Jul 24, 2011 | HP PC Desktops

2 Answers

INSTALLED NEW RAM UPGRADE TO BOOST FROM 1G TO 2G COMPUTER DOES NOT RECOGNIZE NEW RAM STILL SHOWS 1G.


Make sure it is the correct ram for your computer. If you just added one ram chip then try swapping them and make sure they have a tight fit.

To test the new chip replace the old one with it and turn on your machine. If it doesn't see it then it is either bad or not the correct one.

Let me know how it goes.

Dec 14, 2010 | HP Compaq Presario SR2170NX (RK549AA#ABA)...

2 Answers

The board for this appears to have a dead ram slot.If putting ram into second slot the monitor just goes black with line distortions.Remove the Ram and install to first slot everything works ok add a 2nd...


Hi,
Inspect the memory slot carefully. If there are are bent pins in the slot , you can probably align them with a pointed tip. Otherwise the best option would to replace the motherboard. Because after the process RAM is the fastest component in the computer. Out of experience in repairing the motherboards ,i recommend to replace the motherboard.

Thanks Fixya
Proton

Jun 17, 2010 | HP Compaq Presario SR1720NX (EL435AA) PC...

1 Answer

Can I install one (1-gig) memory stick instead of 2 match pairs (only have one) this is to replace two 256 sticks?will it preform at 1 - gig memory


Yes.

The Maximum Total Amount of Ram Memory is 2GB.
(2048MB)
The Maximum Amount for EACH ram slot is 1GB.
(1024MB)

Ram should be installed in Slot 1, when using just one stick of ram.
This is the ram slot closest to the Processor.

The Processor reads ram memory that is installed in Slot 1, first.

This is Dell Support, and the main support page for the Dimension 3000 desktop computer,

http://support.dell.com/support/edocs/systems/dim3000/en/SM/index.htm

In the list left-click on - Technical Overview

Now click on - System Board Components

Number 1 is Slot 1.

Note*
Your body carries Static electricity. Static WILL fry out (Short Circuit) the delicate computer hardware components inside a computer.

Work on a table.
After you have opened the computer case, and BEFORE you remove that ram module from it's anti-static protective bag, TOUCH the metal frame of the open computer case. (Power unplugged from computer)

This will relieve your body of static.
Ignore the above if you are already aware.

May 21, 2010 | Dell Dimension 3000 PC Desktop

2 Answers

I need a list of compatible video cards that can be installed to upgrade the computer to make it run smoother and assist with games, I also need to know what processors can be installed in it ato upgr


I hope you realize the manufacturer recommends a maximum of 1GB of RAM in this system.

Since the system only has PCI slots, any kind of PCI video card should work without a problem.

May 31, 2009 | Compaq Presario SR1120NX 2.66GHZ Tower w/...

2 Answers

Model No AL-096 Sahara memory daul channel


2 slots does NOT mean Dual Channel, that just allows for 2 RAM chips

Apr 18, 2009 | Dell Dimension 8300 PC Desktop

1 Answer

Ram issue with compaq presario 5000 G1 Series


as you can see from the information below there are different requirements for RAM to work stable in your system . Most importand are the RAM VOLTAGE , SPEED , and Configuration of chips. you will need to consult the manual for qualified RAM requirements. Some RAM will work but not very stable. make sure the voltage supplied by your system is enough for the RAM. If you are running DDR RAM in dual channel mode, the ram needs to be the same size also. DIMM modules for the HP computer must meet the following requirements
  • The number of pins on the DIMM must match the socket type.
  • DDR memory requires a 184-pin slot and 1.8 operating voltage.
  • DDR2 memory is not compatible with DDR1 memory and requires a 240-pin slot and 2.5 operating voltage.
  • Synchronous dynamic random access memory (SDRAM): Only use DDR type SDRAM memory if the computer came with DDR-SDRAM.
  • SO-DIMM modules for the HP computer must meet the following requirements
    • The number of pins on the DIMM must match the socket type.
    • SO-DIMM memory requires a 200-pin slot.
    • DDR2 SO-DIMMs are not compatible with DDR1 DIMM and DDR2 DIMM memory modules.
    • With a computer running at a system bus of 533 MHz or 667 MHz, use a PC2-4200 (DDR2 DIMM 533) type.
    • The following requirements must be met for the DDR memory to function in dual channel mode:
      • Same density (256MB, 512MB, etc.)
      • Same DRAM chip technology (x8 or x16)
      • All either single-sided or dual-sided
      • Matched in both Channel A and Channel B memory channels

Oct 22, 2008 | Compaq Presario 5000 PC Desktop

2 Answers

I have a Compaq Presario, model #: SR2150NX memory problem


To Be pricise ...there is no hardware problem.
The problem can be two.

1.Your computer supports max of 1.5 GB RAM.....For this check with other vendors too.

2.You have to update your BIOS.

If you can provide me the motherboard no and details i can clarify more on it

Jun 02, 2008 | HP Compaq Presario SR2150NX PC Desktop

3 Answers

Not seeing other stick of ram


MAYBE YOUR COMPUTER ISNT CAPABLE OF HANDLING MORE THAN 1 GB ram UPGRAPE LOOK AT THE SPECS ON THIS MODEL TO SEE WHAT MAX MEMORY IT WILL SUPPORT.

Jan 17, 2008 | Compaq D310 (287944-CTO-4) PC Desktop

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