New Ram not working with ASUS

Asus / A7v8x
January 8, 2009 at 10:22:09
Specs: Windows XP, Athlon 1.8gig
I put in two 1gig PC 3200 400Mhz Ram strips and my comp won't boot no more. Not sure about the voltage and how to change it if that's the prob. I used to have two 256MB Pc2100 266Mhz and they still work fine.

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#1
January 8, 2009 at 11:46:01
Incompatible RAM.

I doubt if you can change the voltage.

If old RAM works & new doesn't.

Thats the problem. Try an online scan with the old RAM at crucial.

Before posting try google. Backup. Use anti virus software.


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#2
January 8, 2009 at 12:03:40
hi
maybe , but check the in the bios setting memory frequency Mhz = auto, in the bios.

use memory bank 1 and 3 only.
i think it still shouldve clocked down if its a athlon xp2200

maybe im getting alzhy but it should run at 133/266 so oc to 166/333
i vaguely remember running a a7v8x oc.d but only at 166/333

prolly going to get cabbaged by jam if im wrong :)

whats phenom 5500?



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#3
January 8, 2009 at 12:06:18
I'm with Clive. Go to Crucial and make sure you're using the right type of ram and using the recommended install (pairs, singles, etc.)

"So won’t you give this man his wings
What a shame
To have to beg you to see
We’re not all the same
What a shame" - Shinedown


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Related Solutions

#4
January 8, 2009 at 13:44:04
what is Crucial, people ?

I always say it's best to doublecheck.


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#5
January 8, 2009 at 19:09:09
Ram that works in another mboard , or any ram you buy or have lying around, may not work properly, or sometimes, not at all - even if it physically fits and is the right overall type (e.g. SDram, DDR, DDR2, etc.; PCxxxx, xxx mhz) for your mboard. In the worst cases of incompatibilty your mboard WILL NOT BOOT with it installed, and the mboard may not even beep - the ram has to be compatible with the mboard and it's chipset.

See response 5 in this for some info about ram compatibilty, and some places where you can find out what will work in your mboard for sure:
http://www.computing.net/hardware/w...
Correction to that:
Mushkin www.mushkin.com

Once you know which module ID strings work in your mboard, you can get them from anywhere you like that has ram with those ID strings.

If you have brand name ram, it is usually easy to look up whether it's ID string is in a list of compatible modules found by using your mboard or brand name system model number.
If the ram is generic, that may be difficult or impossible.


Some times it's just a matter of the ram density and the number of chips that are one the module. E.g. Some 1gb modules may have 8 chips, some 16 (8 on each side). Older mboards may not be able to deal with 8 chips on a 1gb module.

Kingston modules compatible with A7v8x.

I picked Kingston because their information tells you clearly how many chips the modules have.
http://www.ec.kingston.com/ecom/con...

How many chips on the 1 gb module?
It appears a 1 gb module has to have 16 chips for your A7v8x model.
http://www.valueram.com/datasheets/...
http://www.valueram.com/datasheets/...
http://www.valueram.com/datasheets/...

It probably doesn't matter which brand of ram you have or get - it probably must have 16 chips on the module.



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#6
January 8, 2009 at 22:55:38
I'm pretty sure you have incompatible RAM. If your old RAM is of the PC2100 type, your new RAM must also be PC2100, unless the motherboard can support PC3200.

WinSimple Software


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#7
January 9, 2009 at 02:18:10
Crucial

http://www.crucial.com/systemscanner/

Before posting try google. Backup. Use anti virus software.


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#8
January 9, 2009 at 19:01:21
"i vaguely remember running a a7v8x oc.d but only at 166/333"

A7v8x supports ram running at 133/266 (PC2100), 166/333 (PC2700) and 200/400mhz (PC3200).
If you have a mix of PCxxxx installed, all the ram runs at the least specs of all the modules installed.

"If your old RAM is of the PC2100 type, your new RAM must also be PC2100, unless the motherboard can support PC3200."

Even if the mboard didn't support PC3200 ram, which does NOT apply in this case, the PCxxxx spec itself is backwards compatible. It's other things that determine whether it's actually compatible or not - if those other things are compatible, the ram will work fine, at the max PCxxxx spec the mboard supports. However, the problem is there is virtually nowhere you can look up compatible ram that exceeds the max PCxxxx spec the mboard was designed to use - you're taking a gamble that it will.


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#9
January 9, 2009 at 20:55:03
"Even if the mboard didn't support PC3200 ram, which does NOT apply in this case, the PCxxxx spec itself is backwards compatible."

You're right Tubes, I stand corrected.

WinSimple Software


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#10
January 10, 2009 at 06:58:57
hi

just to clarify yes i know about mixing ram types of differing spec Tubes&wires, i didnt assume he was mixing ram, on the point of double sided vs single side ram, fair comment.

It might 'support' pc3200 but it wont run at 200/400 fsb
heres why, after thinking about it, the a7v8x had to have a sticker on the south bridge stating 333 fsb if it didnt have it it was pot luck wether it worked at that fsb
& heres a big assumption... that he has the mobo that can, many didnt as there were a lot of revisions on that board.


just google 'a7v8x 333 sticker' and you will see the results and issues

& he still needs to try 1 new stick in memory bank one and see if it boots, would be useful if the op bothers to post back.

cheers


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#11
January 10, 2009 at 07:46:46
"there were a lot of revisions on that board."

Yes, it's possible earlier mboard revisions of the A7v8x don't support 200/400mhz (PC3200) ram, but usually in that case, sites such as the Kingston one list the different revision series, or mention the different series, if there is a difference regarding which ram a revision of a model supports. One could confirm that by looking up the compatible ram on several major sites - if none list or mention differences regarding the mboard version, there is probably no difference in ram support regarding that.

In any case, the PC3200 ram would still work if it is listed as compatible, though it might be limited to 166/333mhz PC2700 specs.

If the main chipset chips are the same, the ram recognition support is the same. Different revision series, e.g. 1.x vs 2.x, often have different I/O chips, requiring different bios versions, yet the main chipset chips are often the same.


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