How can I tell if I have a bad ram module?

[gt40x4]

I just in stalled 4 gigs of ram in my mbp. the next day it seems as though that it has gotten slower. any suggestions or how can i test for a bad ram stick?

 

[MacModMachine]

download memtest x86, burn it to cd/dvd

put it in your mac's cd drive, hold option when you boot the mac and boot from that cd.

change to test 8 using test selection, this will tell you if you have a bad stick of memory quick, if you do not select test 8 it will work, it just takes alot longer because it tests other aspects of the memory.

 

[gt40x4]

is there an easier way?

 

[Chromide]

if you suspect one is bad and not the other....pull one out and turn it on, see how it runs. then do the same with the other to try and see if only one of them is bad.

memtest is still the best option.

 

[Hmac]

Techtool Deluxe has a quick and dirty RAM test. Probably not as good as MEMTEST, but simpler.

 

[hajime]

Maybe you can swap memory locations and see if the situation can be improved?