Date: Thu, 22 Apr 2004 18:10:10 -0700 (PDT) From: Mark Koan <[EMAIL PROTECTED]> Subject: [q] CPU of a 650
So you are saying that the CPU of a 650 can just be popped out, and placed let's say in a 575? I thought these chips were soldered on.
Yes, they all use the Motorola 68040 and those puppies are consistent in their pinout. There might be some machines (laptops, e.g.) where the 68040 is soldered down, but in all the machines where they're socketed, they're swapable.
The only caveat is that a slower rated chip may not run well at higher speeds, but my experience and the "wisdom" on the internet is that even the 25 MHz 68040 clocks up to 40 MHz quite happily.
Jeff Walther
and:
Date: Fri, 23 Apr 2004 06:38:30 -0400 (EDT) Subject: [q] [Fwd: [q] CPU of a 650] From: <[EMAIL PROTECTED]>
A quadra 650 and it's cousins have a 25mhz processor - the 575 has a 33. I got a Quadra 800 board and swapped its chip in to the 575 - things worked fine. - Dick
The Quadra 650 has a 33 MHz processor. The Centris 650 has a 25 MHz processor. The Quadra 610 has a 25 MHz processor but usually a 68LC040 w/o the FPU. The Centris 610 has a 20 MHz processor. The Quadra 800 has a 33 MHz processor and the motherboard is essentially identical to the Centris and Quadra 650. The Quadra 840/AV has a 40 MHz processor and it is a whole different animal motherboard-wise but the CPU will still swap out.
Jeff Walther
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