**Unified** DFI LanParty UT 790FX-M2R-M2RS / Phenom /Data Base Thread**

[justapost]

A short update. Got a new 9850BE from AMD last week. The chip was made in week 11/08, so not the latest one.
I tried to oc under linux (debian lenny 64bit) and i was hitting a wall at ~2.75GHz with cpu temps ~75°C on air cooling.
On thuesday my watercooling parts arrived so I started playing with higher voltages. With 1.5V core and cpu temps are at ~58°C max. With the xig i always had temps above 75°C with voltages above ~1.425V, so for the moment i'm happy with that. I tried to get a good hwbot wprime result for a few hours for the rest of the evening.
Yesterday was really weird. I had all types of issues starting with random cmos clears, no post no boot, freezing issues. It turned out that 1066 mode was no longer stable (tried lower nb speed different timings voltages, driver modes). Even at 800 mode i had above issues, so i switched to 2GB GSkill 6400-4-4-3-5 modules. System is rock solid again.
Under winxp 32bit the chip runs stable at 2.8GHz ~1.3V however. Today I tried ocing under winxp 32bit.
NB 1.3V
MEM 400 5-5-5-15 1.85V

2.5GHz CPU 1.225V
2.6GHz CPU 1.25V
2.7GHz CPU 1.275V
2.8GHz CPU 1.3V

So fas so good. Now for 2.9GHz i tried 1.3V-1.45V in 0.025V steps. The system allways froze after a few minutes running prime95, had no idle freezes.

Now at 1.475V the chip runs prime95 for about an hour and also passed some idle freeze testings. Temps under load are 55°C max (the cpu temp is ~1°C higher than the core temp here).

BTW: My GBT Odin 550W PSU died last week. The maximum that psu had to handle was ~300W. While I wait for the RMA i use an Zalman 850W PSU.

@ea6gka: Had an 9500 for a while, taht chip did 2.55GHz max at 1.25V, so 2.6GHz at 1.21V look pretty good to me.

@JWilson: Cracy suicide, could you boot with those settings or did you change the multis under windows? Also can you run 14x230 = 3320MHz stable and without idle freezings at 1.4V? And a last question what temps do you get with 1.4V and 1.5V under load?

[JWilson]

........
@JWilson: Cracy suicide, could you boot with those settings or did you change the multis under windows? Also can you run 14x230 = 3320MHz stable and without idle freezings at 1.4V? And a last question what temps do you get with 1.4V and 1.5V under load?

I boot from the bios using those settings and never use Windows OC software. 14x230 is 3220(not 3320 as your reply says) and never freezes, but it fails prime in a hour or so. Suicide shot is 14x240. That is 3320 and sometimes freezes once-in-a-while. I'm all watercooled with several fans blowing on everything. Never checked temps, but shutdown is 60C and never activates.

Waiting for the next Phenom revision

[justapost]

I boot from the bios using those settings and never use Windows OC software. 14x230 is 3220(not 3320 as your reply says) and never freezes, but it fails prime in a hour or so.
Suicide shot is 14x240. That is 3320 and sometimes freezes once-in-a-while.

Thanks, you have a good clockerit seems. 20MHz-40MHz difference would mean 1.5MHz-3MHz lower ref HT. Never saw an bigger difference than 5MHz for the cpu clock here.

I'm all watercooled with several fans blowing on everything. Never checked temps, but shutdown is 60C and never activates.

Have mine set to 75°C. I reach 60°C with 1.55V here. If I measure the voltage with a DMM it's 1.59V.


This is my imit at the moment. 14.5x202MHz works at 1.5V for 203MHz i need 1.55V.

Waiting for the next Phenom revision

I ordered an 9950BE hope that think will take me over 3GHz.