Mac memory Q

[sureno]

just want some conformation on this particular set up,

i have a 2x3,2 GHz Quad-core intel xeon mac pro which i bought in 2008
it has

4 x 1gb DDR2 FB-DIMM 800MHz
i want to add
2x2gb ram to this, is this ok or should i add another 4x1gb?

also are these ok

This

or these

here

cheers peeps

[tehlord]

IF you already have 4x1 wont you need 4x2 to make 8 gig or does the Mac have more than 4 memory slots?

Either way i'd be tepted to get 4x2gig anyway so that you have room to upgrade again if you want to. You should be able to sell the 4x1gig that you have now.

Crucial is a good quality brand.

edit - just noticed the Mac Pro has 8 slots but i'd still prefer to leave some free ones for later.

[sureno]

what im wondering is if 4x1gb will work along side 2x2gb?
the 2x2gb are out of bleedin stock

[tehlord]

Well you can use 2 x 1 gb and 1 x 2 gb on a PC but that's not really the question.

I'm not even sure how specific the DDR2 PC6400 is to Macs either? Can you not just use any 240 pin DDR2 PC6400 RAM in a Mac now that they're Intel machines?

There are plenty of other places to get it from :-

http://www.overclockers.co.uk/showpr...odid=MY-190-CS

[sureno]

i really dont know, T3 said it should be cool but i just want some confirmation or alternatives

[Wilty]

Get a PC...

[sureno]

Originally Posted by Wilty

Get a PC...

Ha and Ha

[JAYDMF]

Should be fine man i can see no reason why FB dimms would kick off because different slots are populated with different size sticks. just make sure you keep the channels even. Ie if the plan is for 2x2gb + 2x1gb then each channel should have 1 x 2gb stick + 1 x1gb stick

[sureno]

Originally Posted by JAYDMF

Should be fine man i can see no reason why FB dimms would kick off because different slots are populated with different size sticks. just make sure you keep the channels even. Ie if the plan is for 2x2gb + 2x1gb then each channel should have 1 x 2gb stick + 1 x1gb stick

no its in addition to my 4x1gb cards, i have 8 slots in total, 4 already occupied by the 1gb stick and i was going to add 2 more 2gb to 2 out of the 4 remaining slots leaving 2 empty slots

[JAYDMF]

Originally Posted by sureno

no its in addition to my 4x1gb cards, i have 8 slots in total, 4 already occupied by the 1gb stick and i was going to add 2 more 2gb to 2 out of the 4 remaining slots leaving 2 empty slots

yeah same thing man, you have both channels populated now so just tag 1x 2gb stick on to each channel

[sureno]

Originally Posted by JAYDMF

yeah same thing man, you have both channels populated now so just tag 1x 2gb stick on to each channel

as in 1 in A and one in B?

[JAYDMF]

Originally Posted by sureno

as in 1 in A and one in B?

yup

[bscully]

All that info, with simple to read instructions/diagrams will be inclosed in your manual that you got with your mac pro.

It's best that you fully study that before you install your RAM.

If you've lost it they've got a pretty hefty PDF database on the support site.

If I remember rightly, although I may be wrong you will have to install your new 2GB modules into slots A1 and B1. Then your 1GB modules can go into the following channels. I think you have to install it with the largest modules first.

I have got some DDR2 FB RAM at home that's brand new if you're interested. It's Elixir, which has always been a big one for us here. However, i can't remember if they are 1GB or 2GB modules. Will let you know when i get home.

[sureno]

cheers bud

[bscully]

Originally Posted by sureno

cheers bud

1GB modules I'm afraid.

Let me know if you're still looking though.