VOGONS


First post, by bluejeans

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I managed to bend some pins while trying to put it in but none of them are squashed, they all seem to be making contact when I insert it in the socket. It won't power up, the only two things I can think of is that it was doa or that it needs 5 volts, not 3. It seems like I may as well try to run it at 5 but will it blow anything apart from the cpu?

Reply 2 of 6, by jesolo

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Can you perhaps see if there is a part number or serial number "printed" somewhere on the CPU?
It should have a permanently attached heatsink.

However, based on what I've read up, the 50 MHz CPU (not the DX2-50 CPU) was only released as a 5V CPU.
This CPU was also very uncommon (like its AMD & Intel counterparts), since its 50 MHz bus speed did not behave well in many motherboards.
You will most likely have to apply wait states to your memory and VL-bus (if you have VL-bus slots).
If you have PCI slots, check for a divider option in your BIOS setup, since you don't want to run your PCI cards at 50 MHz.
The same applies to your ISA slots (for ISA, you should select a divider of 6 at a 50 MHz bus speed or just "force" it to run at 7.19 MHz).

Reply 3 of 6, by kixs

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Also check your motherboard speed settings. For testing the CPU you can select safe speed of 33MHz and the CPU will run at 33MHz.

Requests are also possible... /msg kixs

Reply 4 of 6, by nforce4max

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If it is a older style 486 as in there is no clock doubling then it is certainly a 5v chip, the 3v models came a bit later in the life of the platform.

On a far away planet reading your posts in the year 10,191.

Reply 6 of 6, by Robin4

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The borderline from 5volt to 3.3volt cpus begins from the 486 DX2 66 mhz processor..
But a 50mhz one is certainly a 5v or 4 volt processor.

~ At least it can do black and white~