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Telson
04-04-2001, 04:09 PM
I am completely new to upgrading. I want to upgrade to a G3 500mhz xlr8 from my 333mhz beige G3. What do I need? Do I need the CarrierZIF Universal Upgrade Adapter and the Mach G3 500mhz card.
What is a ZIF? I looked at the motherboard and didn't see anything labled ZIF.
Sorry for my ignorance.

Big Al
04-04-2001, 04:29 PM
ZIF stands for Zero Insertion Force. This is a cpu socket that has a bunch of holes that line up with the pins of the cpu. You just carefully slide the cpu in after lining the pins up with the holes in the socket. You don't need any pressure to seat the cpu which is why it's called a ZIF. However, if done wrong it is very easy to bend the pins on the cpu and if you break one when straightening it back out you're SOL depending on the dealer. I have received cpus with bent pins and successfully straightened them out after contacting the vendor and getting the go ahead. The stability of the connection is gained by locking the cpu in place with a lever after it has been correctly inserted.

Louie
04-04-2001, 06:41 PM
No Carrier card needed for beige G3; just buy a quality ZIF such as XLR8. The Gray market ones can be bad news. I'm replacing two right now.

Telson
04-04-2001, 07:52 PM
Thank you Louie and Big Al, that helps alot. If I was to upgrade to dual G4's I would need the MPe carrier though, right? This is what I understand from what I read.

magician
04-04-2001, 09:09 PM
howdy, Tel.

to upgrade to dual G4's you would need a Velocity board.

you can start with a single 500Mhz G4 ZIF for now, then step up to a Velocity with another G4 500 in the future.....or, you could just get a dual-G4 Velocity now.

the XLR8 ZIF are on the ZIF page (http://www.macgurus.com/shoppingcart/showrampage.cgi?xlr8boards1z.html).....the Velocity are on a different page (http://www.macgurus.com/shoppingcart/showrampage.cgi?xlr8boards2cz.html), towards the bottom. For that machine, you need Velocity 66.

http://macgurus.com/infopop/emoticons/icon_smile.gif

spaz2
04-04-2001, 11:32 PM
....As I was reading posts i came across a potential issue regardeing the XLR8 Velocity card that gave me pause and led me to put my wallet away as I was intending to purchase this card. Read the topic in the "Processor Upgrade" section of this forum called "Grey Market Zif and OSX". One post indicates that apparently the "Velocity" card requires you to remove your "floppy" cable at it's connection on the mob. One dude reported that this seems to create a potential risk for "shorting" the card... sounds to me like maybe possible "hot" contact with expossed "floppy"terminals on the mob! Appartently the velocity "pins" extend down and risk contact with expossed contacts....I intend to wait as this issue could present unresolved risks! .



[This message has been edited by spaz2 (edited 05 April 2001).]

magician
04-05-2001, 11:37 PM
I didn't even notice this when I installed Velocity here.

And needless to say, we have suffered no shorts.

http://macgurus.com/infopop/emoticons/icon_smile.gif

spaz2
04-06-2001, 12:30 AM
Well that is good news! I wonder what the issue was/is with BDAqua's machine and the Velocity card? "ZZZzzzzt" does not sound good! Sounds like "arcing" as in electrons jumping across a"gap" and all that... Hopefully the XLR8 tech folk will have an answer for him shortly as it sounds as if he is shipping his G to them...

magician
04-07-2001, 01:06 AM
I asked spud about that again today, and he just shook his head.

maybe it's a different matter in a MT? The logic boards should be the same, though.

no telling. Good thing XLR8 is backing him up. Class move.