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unclemac
08-03-2004, 02:20 PM
Thought I would share some images of one of our SP G5 Xserves; not many internal photos on the web.


Logic Board
Here is a shot straight down of the entire logic board. Notice there is a plug/port for a second CPU as well as mounting points for the screws....so, unlike the SP towers, is there no difference in the logic boards between the SP and DP Xserves? The long rectangle at the bottom is the power supply, and although not visible, the 3 SATA drives mount to a board that runs the full width of the Xserve, just to the left of the bank of fans (on the left of the photo).

http://mail.lblp.com:9000/%7Emcorippo/00C9E7E3-006AD229.0/8304_14431_0.jpg




Rev 2 (90nm) G5 CPU
G5 CPU with it's cover off - just a little clip on piece of aluminum; probably helps optimize airflow over the relatively small heat sink. Notice the thickness of the heat spreader, and that the actual heat sink fins are soldered on.



http://mail.lblp.com:9000/%7Emcorippo/00C9E79A-006AD229.0/8304_14101_0.jpg




3 internal SATA channels
With another cover removed, the cables between the logic board and the SATA drive connection board are exposed... Notice the ribbon cable and Fire Wire cable that extend from the logic board to the front of the unit and terminate at (what I assume is) the PMU which includes one FW 400 port, one USB port, power switch and CPU load indicator lights.



http://mail.lblp.com:9000/%7Emcorippo/00C9E7D2-006AD229.0/8304_14333_0.jpg

eric
08-03-2004, 02:29 PM
:kickass:

I think I need one of these things. :D

What's under that heatsink in the middle of the mb -- between the banks of RAM.

So does that mean you can 'upgrade' to dual processor if you want? Is there something in the maintence agreement for that?

unclemac
08-03-2004, 03:03 PM
Hi ya Eric,

What's under that heatsink in the middle of the mb? I have no idea. Seperate L3 cache? Not likely I would guess...

The SATA controller? I assume it is on the logic board somewhere, as those SATA cables run from the LB to the board that the hot swap drive trays plug into...

What else could it be? Your guess is as good as (probably better http://macgurus.com/forums/images/smilies/wink.gif) than mine.



...So does that mean you can 'upgrade' to dual processor? I don't know about upgrades...could it actually be plug and play? What about temp sensors and fan control, and all that sorta thing that we read about with the G5 towers? Never seen a G5 CPU listed for sale anywhere from Apple - or anyone else. We bought the spare parts kit that comes with one of everything - LB, fan kit, PS, HD tray, etc., but no CPU. Maybe some day down the road a third party G5 kit will emerge? Not holding my breath. Would be cool though.

IBM, HP, Dell, and the like offer the ability to add a second CPU at a later date to their servers. As this is an enterprise machine, I think Apple is missing the boat anytime they are not as easy to work with and flexible as their established companies.

I will be keeping my eye out for any CPUs that fall off the back of a truck somewhere....

eric
08-03-2004, 03:23 PM
Costa's sure to stop by. He may actually have a clue. Although, he's going to bummed that he can't read the writing on the chips. :D

Just a thought, maybe it's a big fat heatsink sitting on top of the memory controller. Isn't that sucker clocked at some absurdy high speed? Absurd when compared to what the G4s towers; not absurd in absolute terms because in reality it sure to :kickass:

unclemac
08-03-2004, 03:38 PM
....See? I knew your guess would be better. Sure makes sense based on the positition between the two banks.

Damien
08-03-2004, 06:36 PM
Wow, you would need to be careful walking in front of that thing. A bit too close when those fans ramp up and you would get sucked up against it and would need help getting loose! :D

unclemac
08-03-2004, 09:33 PM
Right. :)

Funny thing is, these G5s are maybe half as loud as the G4 Xserves. They have 2 big squirrel cage fans that make some serious noise.

My review of the rev1 G4 Xserve (http://www.macgurus.com/forums/showthread.php?t=15897&highlight=xserve+loud).