A3630 FPU question

amiman99 · 08 February 2013, 18:34

I have an A3630 card in my A3000 because the original CPU is not working anymore. (dont ask me why, I have no idea why)
I have a problem running the FPU at different frequency then 25MHz, or asynchronously to the CPU speed. I have a new Freescale 68882 40MHz chip and a couple different oscillators at 33, 50MHz. My original idea was to overclock from 40 to 50MHz.
I have noticed that the card runs fine at 25MHz, asynchronously or synchronously.
When I change the oscillator to 33MHz and set the jumper to use the external oscillator the system will boot , but when I try to run rendering software like Vista in FPU mode, the system will crash or freeze after few seconds of operation.
When I change the oscillator to 50MHZ the system will not boot at all.

Does anyone have problems running the A3630 FPU in higher frequency?

amiman99 · 26 February 2013, 04:33

Is there anyone with that card running FPU faster then 33MHz using optional oscillator????

08 February 2013, 18:34	#1
amiman99 Registered User Join Date: Sep 2009 Location: San Antonio, TX USA Age: 50 Posts: 1,185	A3630 FPU question I have an A3630 card in my A3000 because the original CPU is not working anymore. (dont ask me why, I have no idea why) I have a problem running the FPU at different frequency then 25MHz, or asynchronously to the CPU speed. I have a new Freescale 68882 40MHz chip and a couple different oscillators at 33, 50MHz. My original idea was to overclock from 40 to 50MHz. I have noticed that the card runs fine at 25MHz, asynchronously or synchronously. When I change the oscillator to 33MHz and set the jumper to use the external oscillator the system will boot , but when I try to run rendering software like Vista in FPU mode, the system will crash or freeze after few seconds of operation. When I change the oscillator to 50MHZ the system will not boot at all. Does anyone have problems running the A3630 FPU in higher frequency?

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26 February 2013, 04:33	#2
amiman99 Registered User Join Date: Sep 2009 Location: San Antonio, TX USA Age: 50 Posts: 1,185	Is there anyone with that card running FPU faster then 33MHz using optional oscillator????

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