Ram Placement 2x1GB + 4x512MB --> Newby Confused

[kevinoneill]

Hey guys.

I bought my MacPro Jan. of 2007.

2x2 Ghz Dual-Core Intel Xeon

It came with 4x512MB, I recently purchased 2x2GB. I thought I had them installed right, 6GB was showing up.

Just today I look, and it shoes 4GB...

Is it possible the 2GB are reading 1GB? I swear I saw 6GB total show up before... now i see 4GB?

Much appreciation!

 

[iPhysicist]

Simple Math... 2x1GB=2GB, 4x0.5GB=2GB, 2GB+2GB=4GB How could you ever think to get 6GB out of that?

 

[kevinoneill]

ahahaha ok i'm a moron, i meant 6GB total, but i'm checking my order now, maybe i only doubled my ram, i thought i went from 2GB to 6GB.... maybe it was 4GB....

 

[kevinoneill]

I'm not CRAZY!

I ordered 2x2GB.... so is it possible its reading them as 1GB?

or did i get sent the wrong thing?

 

[Techhie]

ahahaha ok i'm a moron, i meant 6GB total, but i'm checking my order now, maybe i only doubled my ram, i thought i went from 2GB to 6GB.... maybe it was 4GB....

and to think you needed a physicist to show you that

 

[Techhie]

I'm not CRAZY!

I ordered 2x2GB.... so is it possible its reading them as 1GB?

or did i get sent the wrong thing?

yes, check with whoever you ordered it from.

 

[kevinoneill]

lol I've never been this confused in my life...

here's what i ordered.

is that not 2x2GB ??

 

[kevinoneill]

I hurt my head, i'm going to bed lol.

Looking at the price, i ordered 2x1GB which is what it shows... i think i just had a senior moment.

 

[macz1]

I think they sent you the wrong thing. If I look for CT2KIT25672AP667 in google, I see only 2x2GB kits (4 GB total)...

First check the stickers on the RAM modules. If they only show 1GB each I would contact the vendor where you ordered them from.
Another possiblity are broken modules, which can always happen...