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Flashing a Processor - Page 2

post #11 of 15
No CPU I'm aware of has any kind of programmable memory. It just does what it does. It's up to the BIOS/UEFI to change parameters.
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post #12 of 15
Its not possible BUT I would like to know how the cpu knows all its info.
post #13 of 15
It would be next to impossible to do it with a new chip, but i know with an old AMD chip i used to have you could bridge a few pins on the cpu (on the actual base of the chip) and it would be recognized as a higher speed chip.

I know with lga775 chips you could bridge some connectors on the cpu that changed what the motherboard saw the BUS speed should run at, this was a poor method of overclocking but was often used by those with HP and other system which had locked a locked BIOS and had no options for overclocking with software.

I believe intel uses a laser to cut certain circuits on the cpu die which allows them to set what speed the chip should run at.

Thinking bout it,it my be possible to disrupt the connection between the cpu and BIOS on the motherboard, this my trick the bios into thinking the chip had higher stock speed.
That would only be possible if the bios was responsible for setting the multiplier (which i think it is).

These are just some observations and what i think is possible. This is going by what i know from general reading and should not be used to base anything off.
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post #14 of 15
Quote:
Originally Posted by mcpetrolhead View Post
It would be next to impossible to do it with a new chip, but i know with an old AMD chip i used to have you could bridge a few pins on the cpu (on the actual base of the chip) and it would be recognized as a higher speed chip.

I know with lga775 chips you could bridge some connectors on the cpu that changed what the motherboard saw the BUS speed should run at, this was a poor method of overclocking but was often used by those with HP and other system which had locked a locked BIOS and had no options for overclocking with software.

I believe intel uses a laser to cut certain circuits on the cpu die which allows them to set what speed the chip should run at.

Thinking bout it,it my be possible to disrupt the connection between the cpu and BIOS on the motherboard, this my trick the bios into thinking the chip had higher stock speed.
That would only be possible if the bios was responsible for setting the multiplier (which i think it is).

These are just some observations and what i think is possible. This is going by what i know from general reading and should not be used to base anything off.
Yes, it works similar to jumpers. If you removed the IHS and knew what to look for you might be able to change the max multiplier by reconnecting the bridge again. When they test the CPUs they test them at the highest speed first. It if fails it gets a bridge snipped. They snip them untill they get down too low and then toss the remaining in the garbage, though most of the bad silicon is known about before they make them into true CPUs so by this time they aren't wasting much.
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post #15 of 15
removing and modifying the silicon would be pretty much an impossible task, the tracks are monumentally small and without extreme tools and full circuit diagram of the chips it would be all but impossible.
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