My asrock 845gvmotherboad does not show ram frequency more then 166mhz though the my ham has 400mhz

It would seem as if you have got 2x512mb sticks and not 2x1Gb sticks. There is no setting in the BIOS that will change how your system sees your RAM sticks. RAM wasn't made at the 333Mhz speed in 1Gb sticks, it was the expensive end of the market and so was usually only available in the highest speed range for business and industry.

yes, there may be compatibility problem. your 2GB ram may be dead. try your 2gb ram on other notebooks. if it is working on other notebooks, then your ram is ok. your notebook will support maximum 2GB ddr2 memory per slot. your notebook may not be booting due to unsupported frequency of your ram. maximum supported frequency for your notebook may me 400Mhz, and you are putting a 667MHz ram into it. try to put a 400MHz 2GB ddr2 ram in your notebook.

Hi, Jeremy,

Not Advisable, apart from being illegal, you can cause irripairable damage to your radio.

These radios were designed to operate on specific frequencies only.

My advice....Don't Do It!!!

Hope that answers your query.

Cheers,
Peter

HP DC 5000 series of business desktop computers;
(All models),

Uses DDR Sdram that operates at a frequency rate of 333MegaHertz. (333MHz)

Also stated as PC2700.

Total Maximum Amount of Ram Memory is 4GB.

EACH ram memory slot's Maximum Amount is 1GB.

There are Four ram memory slots.

(DDR is double pumped ram memory. Has a basic clock rate of 166Mhz, which is double pumped to show up as 332. This is rounded off to 333.

http://www.crucial.com/store/listparts.aspx?model=dc5000%20Series%20All%20Form%20Factors

According to SiS® official document, SiS® 748 chipset has limitation DDR supports:
CPU at FSB 200MHz mode, it will NOT support DDR400
CPU at FSB 333MHz mode, it will NOT support DDR200
CPU at FSB 400MHz mode, it will NOT support DDR200/DDR266
Depends on chipset http://www.asrock.com/mb/overview.asp?Model=K7S8XE

Unless you are using 2 identical hdd's RAID should be disabled. This may be where the problem is as it's looking for a RAID setup where none exists. Enable SATA but keep the RAID set to either IDE or disabled. Then try rebooting. Hope this helps.

Hi There,

As the memory is ddr2 ram 200mhz is correct in cpuid, 200mhz x2 (ddr2) = 400mhz, The only thing I can guess at why it is not showing all the ram is do you have a graphics card that can use system memory to boost its own? This can be disabled in the bios

it can support up to 2GB ram maximum FSB 533/400MHz,
Memory Supported RAM Technology: SDRAM, DDR SDRAM
RAM ( Max ): 0 MB / 2 GB (max)
Supported RAM Speed: PC2100, PC1600, PC100, PC133

Check your manual and find the QVL list. Memory tested to work in your board is listed there. I found a link that shows your board. Click the Download on the left & check your manual.
http://www.qdigrp.com/qdisite/eng/news/20030521.htm
You Max speed is 400Mhz memory as you will see at the link.

Please vote...

IF UR RAM IS SDRAM THEN U CANT UPGRADE TO DDR BUT IF ITS ON DDR RAM THE U SHOULD B ABLE 2 UP GRADE 2 1GIG OV DDR RAM RUNING AT 400MHZ