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RAM Memory Speed compatibility

I recently successfully installed 2 x 1GB [240 pin 128Mx64] DDR2 PC2-8500, 1066 MHz unbuffered, Crucial supplied memory units. I used the Crucial dianostic tool to select the 2x1GB units which were recommended by Crucial as compatible with my PC's exisiting memory units. The mother board is Asus M2N-TE and has four memory slots, two yellow, two black. There are two original [not Crucial supplied] 500 MB memory units installed [240 pin 128x64] DDR2 PC-5300, 667 MHz unbuffered. All units have been installed as pairs. Please advise if the total memory will run at 667 MHz, i.e. the 1 GB units may not operate at the optimum 1066 MHz of the new units. If the total 3GB memory can only run at 667 MHz would it be best to remove the 500 GB and use the 2GB on its own to get the faster memory speed? I do not use the PC for games but would welcome faster memory for downloads. Also, how do I modify the BIOS settings / system board settings to optimise the relationship between the 2GB faster memory units and the BUS speed?

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  • ronbagwell Feb 15, 2009

    shanemorris, Many thanks for your very helpful and prompt reply on memory speed. Have you any information on the second part of the issue, i.e. should I need to change the BIOS settings and System BUS speed to accommodate the faster memory units? If so any advice on how I may do this?

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All memory will operate at the slowest speed chip unfortunately. the only way to get the higher speed is to have all chips capeable of that particular speed.

Posted on Feb 14, 2009

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I bought a new 1GB ram(DD2) when i insert it it nt work bt whenever i insert it with old 512MB ram then its work bt in bios setting only show the 1GB ram


Maybe 1GB is the maximum amount of memory that your system will hold. And maybe your system likes memory to be in pairs, so when you put the 1GB in by itself it didn't work, but when you put it in with a 512MB it works.

May 18, 2012 | Computers & Internet

1 Answer

Following installation of my 'Crucial CT12864AA800' 1GB DDR2 240 PIN 128Mx64 PC2 RAM, my Intellistation Pro M Series [not sure what #] will not load the OS. Is it not compatible? I checked...


This is the download page for HMM, (Hardware Maintenance Manual), for the IBM IntelliStation M Pro 6219,

http://www-947.ibm.com/support/entry/portal/docdisplay?lndocid=MIGR-45692

Under the heading > File link, click on > 71p9918.pdf, in blue

[ After you click you won't see anything happening. The PDF file is downloading in the background.
I have Adobe Reader 9.3.4. version, and a medium speed DSL connection. Took 122 seconds before the first page popped up, and the file was fully downloaded also. Longest time it has taken for a PDF file download, in 5 years of downloading. Just wanted to give you a 'Heads Up' ]

In the Bookmarks menu to the left, click on the + sign next to > General Information
Now click on the sub-heading > Features and Specifications

MEMORY
Minimum: 256MB
Maximum: 4GB
Type: PC2100
Connectors: four dual inline memory module (DIMM) connectors

Plain English;

The Minimum Amount of ram memory that can be used is 256MB.
The Maximum Amount of ram memory that can be used is 4GB. (4096MB)

The TYPE is PC2100. That is DDR Sdram at 266MegaHertz. (266MHz)

Crucial CT12864AA800 is DDR2 Sdram at 800MHz!
PC2-6400

Now WHAT is going on here?

DDR Sdram has 184 gold plated contact pins on the bottom. 92 on EACH side. There is one Locating Notch on the bottom.

DDR2 Sdram has 240 gold plated contact pins on the bottom. 120 on EACH side. There is one Locating Notch on the bottom.

Supporting data is 1) the Hardware Maintenance Manual I just gave you a link to.

This is information about the Crucial CT12864AA800 ram memory module,

http://www.crucial.com/store/partspecs.aspx?IMODULE=CT12864AA800



The contact pins on the bottom of a ram memory module are for Voltage, Signal, Ground, and a host of other attributes.

The orientation of the contact pins in regard to the above mentioned attributes, are in a different place, when comparing DDR Sdram to DDR2 Sdram.
Hence the added number of contact pins in a DDR2 Sdram ram memory module.

More than likely the ram memory module is fried. Can't say about the motherboard, in regard to the ram memory slot, or the Northbridge chip.

[Northbridge and Southbridge chip are the motherboard chipset. The Northbridge chip for the IBM IntelliStation M Pro 6219 is an Intel E7205, the Southbridge chip is an Intel 82801DB,

http://www.intel.com/products/workstation/chipsets/e7205/e7205-overview.htm

Similar to the Intel 875P, (82875P),

http://en.wikipedia.org/wiki/List_of_intel_chipsets#Pentium_4_Chipsets ]


Who recommended this ram memory module? Crucial?

Nov 11, 2010 | IBM IntelliStation M Pro 6219 PC Desktop

1 Answer

Trying to upgrade a Compaq SR1020NX computer. The HP website still has old info, likely based on the original bios. The motherboard is an Asus A8M2N-LA. What CPU upgrades will run on that board? Is there...


The ASUS A8M2N-LA is the motherboard used by HP for the new D4500e AMD AM2 PC.

Here are the details:
Motherboard manufacturer's name: ASUS A8M2N-LA
HP/Compaq name: Nodus-GL8E
CPU/Processor  Socket: AM2 Supports AMD Athlon 64, Athlon 64 X2, and Sempron processors
Front-side bus (FSB)  2000 MegaTransfers/second
Chipset  GeForce 6150 LE chipset
BIOS features  Award brand system BIOS Keyboard combination to used to enter BIOS: F1
Form factor  Micro-ATX: 9.6 in X 9.6 in
Memory  Four 240-pin DDR2 DIMM sockets, Supports PC 4200 (533 MHz) and PC2 5300 (667 MHz) DDR2 DIMMs, non-ECC memory only, unbuffered Maximum HP/Compaq approved memory is 4 GB*
PS - as you can see the rangeis 533 - 667 MHz. I would suggest you call HP support and ask if it will support 800 MHz,




Feb 15, 2010 | AMD Athlon 64 X2 5400+ Processor...

1 Answer

Will Intel D102 Series Motherboard support Transcend 1 GB DDR2 667 Mhz RAM. Please confirm


According to Intel, this board will support a maximum of 2 x 1GB PC2-4200 533MHz Memory Modules, so your PC2-5300 667MHz Ram may not work.

Intel® Desktop Board D102GGC2 - System Memory Features:

The board has two 240-pin DIMM sockets and supports the following memory features:
1.8 V (only) DDR2 SDRAM DIMMs with gold-plated contacts
Unbuffered, single-sided or double-sided DIMMs with the following restriction: Double-sided DIMMs with x16 organization are not supported.
2 GB maximum total system memory
Minimum total system memory: 128 MB
Non-ECC DIMMs
Serial Presence Detect
DDR2 533 or DDR2 400 SDRAM DIMMs

Jan 12, 2010 | Intel D102GGC2 Motherboard

1 Answer

I have attempted to upgrade a Gateway GT52223 from 1= Gig existing 2X 512 DIMMS to 2 Gig on two separate occasions first using Using Crucial -2-1GB 240-PIN 128Mx64 DDR2 PC2-6400 UNBUFF CL6 the system...


Your last results is running your comp OK because it is really only running on the 512 stick. When putting 2 different sizes together it will only run on the smallest, with this said here is a website http://www.4allmemory.com it will test your comp to exactly what type RAM you need . I buy for my clients all the time from this website. Very reliable,Try it..and remember about the 2 sizes

Jul 15, 2009 | Gateway GT5220 PC Desktop

2 Answers

Ram


Your motherboard can take DDR or DDR2 RAM modules.

Crucial says: "Each memory slot can hold DDR PC2700,DDR PC3200,DDR2 PC2-5300 with a maximum of 1GB per slot." No sense getting 4GB since the max is 2GB.

You can get higher speed RAM (PC2-6400) because it is backward compatible.

I would go with the 2 X 1GB Corsair from the ones listed.

Or consider the options on Crucial's site. See this page:

http://www.crucial.com/store/listparts.aspx?model=P5VDC-MX

Two 1GB modules of DDR2 PC2-5300 run about $34 US.

(PS. Your 450W power supply will handle about anything.)

Jun 03, 2009 | ASUS P5VDC-MX Motherboard

5 Answers

RAM Help!


Hi there.
Yes it is related to PC2 and it runs at 800Mhz, this why your system is seeing only half the speed, your system does however support a module running at 333 module and a 400 module, this is the base limit that the memory runs at.
If the memory was 533 then the computer would not start up because the bios wouldn't recognize it.

Thanks for using FixYa!!

Apr 22, 2009 | EliteGroup P4M800-M7 Motherboard

1 Answer

Did crucial memory scan. they recommend 2- 1gb 184-pin unbuff dimm 128mx64 ddrpc2700 installed both sys. did not come up. with 1gb stick at a time sys. comes up fine. but not...


DDR SD ram only. Page 124 of you manual. Dimms with more than 18 pieces are not supported on your board. Seven venders for approved list of RAM chips with model numbers.P15 of you manual.
http://support.asus.com/download/download.aspx?SLanguage=en-us

Jan 17, 2009 | ASUS A7S333 Motherboard

2 Answers

Memory issues


CHECK RAM ONE BY ONE, IT MAY BE POSSIBLE THAT THE RAM IS FAULTY

Nov 09, 2008 | Dell Inspiron 9300 PC Notebook

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