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Accidently Ran Coppermine at 2.2 Volts
Thankfully, nothing happened. (Actually, it could be my imagination, but I haven't seen a computer boot so quickly in quite some time.)
I bought a second Coppermine yesterday, a PIII 550E FC-PGA, and stuck it in an IWill II slocket. I set the VCore jumpers to what I thought was a CPU default setting, "No CPU." My motherboard, an AX6BC Pro II, interpreted this as 2.2 V, although I didn't know this at the time.
I rebooted, entered the BIOS, saw the dangerously off-spec voltage, and changed it from there to the "not so dangerously off-spec" 1.65 V.
At that point, I upped the FSB to 133 MHz, successfully booted into Windows, forced AGP 1x in the registry, and everything seems to be o'kay at 733 MHz.
By the way, the documented jumper setting for 2.2 volts is different than the setting I was using (all jumpers off). It's good to know that the CPU can put up with this nonsense for a short period of time, as it appears to give you a little breathing room when testing your motherboard for Coppermine compatibility.
Paul
paulcs@flashcom.net
I bought a second Coppermine yesterday, a PIII 550E FC-PGA, and stuck it in an IWill II slocket. I set the VCore jumpers to what I thought was a CPU default setting, "No CPU." My motherboard, an AX6BC Pro II, interpreted this as 2.2 V, although I didn't know this at the time.
I rebooted, entered the BIOS, saw the dangerously off-spec voltage, and changed it from there to the "not so dangerously off-spec" 1.65 V.
At that point, I upped the FSB to 133 MHz, successfully booted into Windows, forced AGP 1x in the registry, and everything seems to be o'kay at 733 MHz.
By the way, the documented jumper setting for 2.2 volts is different than the setting I was using (all jumpers off). It's good to know that the CPU can put up with this nonsense for a short period of time, as it appears to give you a little breathing room when testing your motherboard for Coppermine compatibility.
Paul
paulcs@flashcom.net
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