XP slows down after memory upgrade

[Pieter Cramwinckel]

After a memory upgrade (in the 1st slot was 256 mb, in the second I added
512mb double face), the bios recognized the upgrade correcly, but to my
surprise win XP pro was very very very slow slow .
I then took out the original 256 mb in slot 1 and left the 512mb in its
second slot , and win XP runs normaly (recognizes 480 mb).
Both memory sticks were "nobrand", same type PC 2700 same 333Mghz speed.
Why is windows XP so slow when the 2 were installed, and how to install it
again correctly ?.

 

[Drew Tognola]

install the 512mb into slot 1 with the 256mb in slot 2.
Drew

 

[Guest]

in your bios settings u might have a limit on the size of individual ram cards or total ram amoun

u spoke
Af'er a memo'y upgrade (in th' 1st slot was 256 mb, in th' second ah added 512mb double face), th' bios reckanized th' upgrade co'recly, but t'mah surprise win XP pro was mighty mighty mighty slow slow . ah then took out th' origeenal 256 mb in slot 1 an' lef' th' 512mb in its second slot , an' win XP runs no'maly (reckanizes 480 mb). Both memo'y sticks were "nobran'", same type PC 2700 same 333Mghz speed, cuss it all t' tarnation. Whuffo' is windows XP so slow when th' 2 were installed, an' how t'install it agin co'reckly ?. -- Pieter

 

[Alex Nichol]

After a memory upgrade (in the 1st slot was 256 mb, in the second I added
512mb double face), the bios recognized the upgrade correcly, but to my
surprise win XP pro was very very very slow slow .
I then took out the original 256 mb in slot 1 and left the 512mb in its
second slot , and win XP runs normaly (recognizes 480 mb).
Both memory sticks were "nobrand", same type PC 2700 same 333Mghz speed.

They were still not adequately matched: XP is very fussy on this. There
are critical timing loops that got to fail and retry over and over if
they happened to be in the module they were not calibrated for

Nobrand is not worth the saving over good matched modules from crucial
or kingston