RAM problems

[Tamouh H.]

> 
> Dear bsd people,
> 
> I have this amd64 system running freebsd 6.1 with 1 GB of RAM 
> and everything worked very well. Then I've added some  more 
> ram, 2 gb extra, to be precise and aft first it seemd 
> everything worked fine. I could load larger files and my java 
> apps didn't give me out-of -memory problems anymore.
> 
> But everytime I want to upgrade my ports or compile a new 
> kernel, the machine would freeze and the only way to go was 
> to use the reset button. I don't like the look of that.
> 
> Has anyone had similar experiences? I've had two 512MB 
> corsair memory banks, and added two 1GB banks (oem).
> 
> I find it really strange that I can use the bigger RAM but 
> compiling gives problems. Could it also be that the banks 
> could be attached better in my motherboard?
> 
> What should I do now? Continue using it, without 
> portupgrading or compiling a new kernel or ask a new pair of 
> banks at the store?
> 
> Thanks

Mixing memory brands/specs is a BAD idea. As previous suggested , do MEMTEST86 on the new RAM by itself to spot any issues. But it could also be a conflict if using two different versions of RAM.

Tamouh