Anyone using over 2 volts and @ 1.6 gig or higher on an Epox 8KTA or 8KTA+?

[Colin]

It seems the KT7 series may have a problem with over 2 volts and over 1.6 gig. After blowing out my second one in three months, I am considering the Epox 8KTA+ due to the ability to jumper higher voltages. The two phase power for the CPU concerns me though. I have heard it may be necessary to do the 5 volt mosfet mod to maintain Vcores over 2 volts. Does anyone have any experience with this?

 

[fresh2000]

i have an 8kta3+ and im pretty sure its
3 stage power. It has been a great solid board
no problems yet but i havent had a chance to unlock
it yet.

 

[Tacoman667]

I had my setup at 11x146(1605) with 2.0vcore stable. Anything higher I needed to up the vcore again but at default I can get to 1.58gigs easily. This board rox!!

 

[AMDGuy]

Colin (Jul 25, 2001 08:45 p.m.):
It seems the KT7 series may have a problem with over 2 volts and over 1.6 gig. After blowing out my second one in three months, I am considering the Epox 8KTA+ due to the ability to jumper higher voltages. The two phase power for the CPU concerns me though. I have heard it may be necessary to do the 5 volt mosfet mod to maintain Vcores over 2 volts. Does anyone have any experience with this?

What is blowing, the board or the processor?

 

[Colin]

I lost one board, no CPUs yet. The second one I mentioned at the start of this thread was revived last night. The problem was too much dielectric grease in the pin holes of the ZIF socket. LOL, it took me four days to figure this out!

None the less, I believe we are pushing the limits of PSUs and motherboard voltage regulators. I had a long talk with a major PSU manufacturer about this yesterday. Currently PSUs are rated by manufacturers like car stereos. The specs are nebulous, confusing and often without meaning. I expect this will change like it did in the HiFi business 20 years ago.

 

[DeltaSierra]

I have an 8KTA3+ also...how did you get the voltage past 1.85? I missed that part in the manual.

 

[Bender]

Edit: [4]Woops I'm smart[/4] Batteries and solder [4]included.[/4]

 

[Colin]

The Epox has jumpers. You can increase the voltage by .1, .2,.3 and .4 volts over the CPU default.

 

[Wega!]

Colin (Jul 27, 2001 10:49 p.m.):
The Epox has jumpers. You can increase the voltage by .1, .2,.3 and .4 volts over the CPU default.

WOW, without soldering??

 

[Tacoman667]

Yeah, that's what makes the 8K7A such a great overclockable board. You can get a total of 2.35vcore if you clse the L7 bridges for a default of 1.85 and then use the jumpers. The only thing that could be better is that it could be in .05v incraments for more fine tuned overclocking and lower temps, but I ain't complaining. I just wish there was a way to raise not just the DDR voltage, but the actual chipset voltage as well.

 

[Wega!]

Tacoman667 (Jul 28, 2001 08:17 a.m.):
Yeah, that's what makes the 8K7A such a great overclockable board. You can get a total of 2.35vcore if you clse the L7 bridges for a default of 1.85 and then use the jumpers. The only thing that could be better is that it could be in .05v incraments for more fine tuned overclocking and lower temps, but I ain't complaining. I just wish there was a way to raise not just the DDR voltage, but the actual chipset voltage as well.

OK thanks for explaining. This is the next board I'll get, that's for sure!

 

[Tacoman667]

No problem man. I'm glad to help ya out!

 

[Colin]

I am glad this thread is getting some exposure for this board. The reason I started it though, is because there are some threads on other forums that indicate the two phase power for the CPU and many of the current power supplies are not up to the task. The solution for the two phase power problem is soldering the 5 volt line from the PSU directly to each mosfet on the Epox board.