P2B memory problem

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Bolooser11

Good evening,
I run a P2B ver.1.10 with the last 1014 bios and a stick of Crucial 256 PC
133.
I wanted to upgrade to 512 of ram and bought today a stick of 256 Hynix
PC133.
I used to have one of these on my BH6 and it was no problem.
Now, after install, only 128 of the Hynix shows up and the memory counts up
to 384
only.
The Hynix stick has 8 chips on each side with written on them :
hynix 333A
HY57V28420HCT-H
KOREA PL2239A
Thanks
 
Bolooser11 said:
Good evening,
I run a P2B ver.1.10 with the last 1014 bios and a stick of Crucial 256 PC
133.
I wanted to upgrade to 512 of ram and bought today a stick of 256 Hynix
PC133.
I used to have one of these on my BH6 and it was no problem.
Now, after install, only 128 of the Hynix shows up and the memory counts up
to 384
only.
The Hynix stick has 8 chips on each side with written on them :
hynix 333A
HY57V28420HCT-H
KOREA PL2239A
Thanks
Click to expand...
Lots of the old boards won't handle the newer higher density chips. You'll
have to look for a stick made for older systems. They are at more of a
premium, but you can still buy them.
 
Bolooser11 said:
Good evening,
I run a P2B ver.1.10 with the last 1014 bios and a stick of Crucial 256 PC
133.
I wanted to upgrade to 512 of ram and bought today a stick of 256 Hynix
PC133.
I used to have one of these on my BH6 and it was no problem.
Now, after install, only 128 of the Hynix shows up and the memory counts up
to 384
only.
The Hynix stick has 8 chips on each side with written on them :
hynix 333A
HY57V28420HCT-H
Click to expand...

This appears to be a 32Mx4 chip. You'd need a stick with 16 16Mx8 chips.
In terms of Hynix chips this would mean HY57V28820... ICs. I guess these
were on the stick you used to have in the BH6.

Stephan
 
Bolooser11 said:
Good evening,
I run a P2B ver.1.10 with the last 1014 bios and a stick of Crucial 256 PC
133.
I wanted to upgrade to 512 of ram and bought today a stick of 256 Hynix
PC133.
I used to have one of these on my BH6 and it was no problem.
Click to expand...
This was certainly NOT exactly the same module - the requirements are
exactly the same for both boards.
Now, after install, only 128 of the Hynix shows up and the memory counts up
to 384
only.
The Hynix stick has 8 chips on each side with written on them :
HY57V28420HCT-H
Click to expand...
This model number belongs to a 32Mx4 chip. Thus, 16 of these chips are
needed for one 64bit wide channel. Not only are all such modules 100%
crap (they usually don't work reliable if more than 1 or if you're lucky
2 are used, they are not compliant to intel's sdram specification etc.),
but they simply won't work on boards with bx (and some others) chipsets.
You need modules with 16Mx8 chips, can be hard to distinguish (since
modules still have 16 chips, 8 on each side), they are often called "low
density" even though it's technically incorrect.

Roland
 
Thank you for the info.
I'll take that stick back today and get another Crucial one
in a little while.
Have a good day
 
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