Question about Asrock 775Dual-880 Pro Motherboard

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Memory two gigs of ram installed and only one recognized slot one reads empty

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Unplug both ram dim. Plugin one single ram dim and check. Remove first and plugin second dim then check is detected ? If both are detected one by one then check clock speed of both rams , it should match, otherwise only one will be detected. Also check motherboard manual for supported ram eg. ddr1, ddr2 , cloack speed etc.



Posted on Oct 13, 2007


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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

Gateway desktop fx 7026 memory issue, has 4 slots came with( 2 )2 gb sticks = 4 gigs it came with. when i add 2 extra gig it doesnt recognize.

the specs i read says 8 gig is the max. here is what it says for RAM
  • Installed Size 4.0 GB / 8.0 GB (max)
  • Technology DDR2 SDRAM
  • Memory Speed 667.0 MHz
  • Form Factor DIMM 240-pin
  • Features Dual channel memory architecture
  • Configuration Features 2 x 2 GB

check to make sure you have added the right type of memory. also look at your user manual. it should tell you where and how to place the added sticks. sometimes they have to be added in pairs or have to be in specific slots. also if you dont have the manual it is on the gateway site. you should type in your model and serial number and get all the info you need.

Feb 12, 2011 | Gateway FX7026 PC Desktop

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


The Maximum Total Amount of Ram Memory is 2GB.
The Maximum Amount for EACH ram slot is 1GB.

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,

In the list left-click on - Technical Overview

Now click on - System Board Components

Number 1 is Slot 1.

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

How can the bios be updated?

I recommend that you go to the Crucial website and perform the automatic scan function. This will identify your machine and tell you what upgrades are available, taking into account what memory the machine already has and the maximum that the chipset can support.

URL for the site is:

or if that does not work just google 'crucial memory scan'

Mar 17, 2010 | Toshiba Satellite M115-S1061 Notebook

1 Answer

RAM Upgrade

How much memory your Windows OS will recognize depends on which version of Windows you are running. 32-bit versions of Windows will see (and utilize) only 3GB or 3.5GB. To utilize more memory, install a 64-bit version of your OS. More information about OS memory maximums can be found at

Not only is there a maximum amount of memory that your computer motherboard can accept, there is also a maximum amount of memory that your operating system (OS) can accept. For instance, when you install 4GB of memory in a 32-bit Windows system (the most common version; 64-bit systems are typically used by high-end users), your system reports only 3GB or 3.5GB.
First , we can assure you, there isn't a problem with the memory. While Windows allows for 4GB of memory to be addressed, it does not equate to 4GB of physical memory. Some of the memory (regardless of how much you have installed) is reserved for use by the devices that you are using, such as a graphics card, PCI card, integrated network connections, etc, meaning it is unavailable for use as normal main memory. Upon startup, your system calculates the amount of memory needed for these devices; if you haven't maxxed out the memory in your system, it's invisible to you, and all your physical memory (the installed RAM) is available for use. However if you've maxxed out the DRAM in your system, this amount will be deducted from your physical memory, so you can't use 100% of your DRAM. The maximum memory limitation varies by operating system, For instance, the 4GB memory limitation doesn't exist in 64-bit versions of Windows.

Click on this link or copy and paste the complete link into your browser.
If I could be of further assistance, let me know. If this helps or solves the issue, please rate it.
Thanks, Joe

Jun 06, 2009 | IBM PC 350 PC Desktop

1 Answer

Bad RAM slot on HP motherboard

If the memory slot isn't recognizing any memory you stick in there then the motherboard has to be replaced.

Jan 12, 2009 | HP VECTRA VLI8 P3 Motherboard (KZM6120)

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

5 Answers

4gigs ram

Switch sticks around in various combinations (2 gig in slot one, 1 gig in slot two, switch, try other stick, etc) and see if it is the memory or the motherboard.

Sep 10, 2008 | ASUS P5VD2-VM SE - Motherboard - micro ATX...

1 Answer

Ram upgrade

It's generally not a good idea to mix sizes as your more likely to get problems, but that said it probably should still work it's most likely your configuration consult your motherboard book as to what order you should install the memory you have.

Oct 30, 2007 | Intel Motherboard

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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