View Full Version : tbird at 1600 vcore question?
max1mus
08-11-01, 12:38 AM
k i got my tbird to finish prime95 at 1600 yea baby
that was my goal ive been working towards.
but this is at 2.13 vcore and 53c
my question is this if the watercooling crown uses this high a voltage than heat should be my only concern?so as long as it doesnt get overheated i should be able to run those voltages right?
what is the max i can run on it.i have my kt7a-r phase 1 and 2 modded with the 5v modded too(and this overclock is not possible without the 5v mod) i have them on a molex connector and if i unplugg the wires i have soldered to the mosfets i cannot attain anything over 1533 stable!400 watt ps by the way
laters
MaX
Your voltage should be fine but I wouldn't go much higher. If your temps are reasonable you don't have a thing to worry about. What is involved in doing the +5v mod? I havn't heard much about this but it seemed to help your overclock.
You will shorten the life of your processor by running it at a higher voltage. How much and is the question? The only way to get around this is with supercooling. Personally, I have no problem running a CPU at higher voltages because I replace them frequently with a faster chip.
The 5 volt mod is a bad thing. It will eventually ruin your motherboard. If you need the 5 volt mod to run at 2.13 volts, you need a better power supply.
The 5 volt mod takes the 5 volt line from the PSU and connects it to the OUTPUT of the bottom three mosfets on the KT7 series. These mosfets provide regulated three phase power to the upper three mosfets which supply the Vcore. Take a look at the schematics for the HIP6301 (http://www.intersil.com/data/fn/fn4/fn4765/FN4765.pdf) and the HIP6601 (http://www.intersil.com/data/FN/FN4/FN4819/FN4819.pdf) . Putting a constant 5 volts on the lower three mosfets output is delayed suicide for your motherboard.
max1mus
08-11-01, 02:44 PM
i have tried several power supplies!if the voltage to the mosfet is the same and common to the same source(5v line from powersupply) then there is no potential,so as long as you dont feed it 6volts then there will probably not be any problems.DO NOT TRY TO ADD POWER FROM ANOTHER POWER SUPPLY TO THE MOSFET UNLESS THEY ARE BONDED!!!
the kt7a-r series is notorious for have weak feed from the mosfets. have you noticed that the new generation come with little heatsinks on them.
late
s
p.s. it doesnt drop my voltage so low that it resets.BUT any drop in voltage will increase the current and cause higher temps thats why this mod added the extra mhz.
if your into doing the "safe thing" then dont worry about this mod its only for those with spine
Did you look at the bucking circuit at the links I provided?
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