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Need help with 870a-ud3 mobo.

post #1 of 12
Thread Starter 
Hey guys, still playing around with my OC and wondering if owners can help me get a idea of a baseline for FSB freq/NB voltage for stability.

No luck on FSB and wondering if I'm not throwing enough volts or hitting a thermal wall.

I have a feeling it might be a thermal wall since when I revert to my last stable OC (only CPU multipliers/voltage adjustments) after a FSB OC crash, it'll be slow for about 10-20 mins and than revert to the previous speed.

During all changes with FSB I kept the HT close to 2000 or at it. Adjusted the ram to 1333 speeds with extremely loose times with all FSB adjustments.

Or maybe I'm not throwing enough volts? I have no idea at this point and need help from the community.

I played around with 1.1v - 1.26v on the NB with FSB speeds of 222/250 and nothing seems to stabilize. Higher voltage does lead to longer stability but we're talking like a few mins.

It just bothers me when reverting to a previous non FSB OC stays slow for awhile after a FSB OC crash.

Is it possible I need to up my CPU-NB voltage again? Only info I found was from the 1055t and it seems maybe CPU-NB voltage related again. Jeebus.
Edited by evilferret - 1/15/11 at 10:34pm
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post #2 of 12
Thread Starter 
Bump.

Almost a 100 views and no input = great sadness.
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post #3 of 12
Thread Starter 
Bump... hmm the lack of any input on this motherboard is scaring me.

Been playing with the FSB but maybe should go back to stock FSB. I get weird hiccups. Seemingly random crashes/BSODs.
Edited by evilferret - 1/17/11 at 4:53pm
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post #4 of 12
How high have you gone with your cpu/nb voltage? If you didn't know, 1.45v considered max. Ive seen other CHIV owners run there's at 1.5v+. My self I get by with 1.35v.
 
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post #5 of 12
Thread Starter 
Quote:
Originally Posted by The Sandman View Post
How high have you gone with your cpu/nb voltage? If you didn't know, 1.45v considered max. Ive seen other CHIV owners run there's at 1.5v+. My self I get by with 1.35v.
I need help stabilizing FSB speeds. I thought I had to throw more NB volts for higher FSB speeds but it seems to not work/hit a thermal wall. And I found mention that CPU-NB voltage could help FSB too.

I'm already done with my non FSB OC and now want to play with my FSB.

I'm currently running 1.45 vcore and 1.4vs on the CPU-NB (at 3.6 ghz/2600 nb freq). Hoping playing with the FSB will net me the same performance at lower voltage.

I can't seem to get my FSB past 210 (pitiful).

So was hoping for other people with this board who can help me with FSB/voltages (or at least a baseline idea).

But than this is a cheap motherboard so I might be stuck playing only with multipliers.
Edited by evilferret - 1/18/11 at 9:19am
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post #6 of 12
Can I ask perhaps a silly question? You are raising the ref clock in small increments aren't you? (No more than 3-5MHz and than repeat) On my previous mobo (Asus M4A785-M) which at that point I considered it a cheap board I had the very same problem and it wasn't till I started raising by only 3-5mhz that it actually let me get it up to 260MHz. It was driving me crazy. I thought I'd make jumps of 5-10mhz and got absolutely nowhere. Sorry if you knew this already and I'm in no way trying to offend you.

Wish I could be of more help, but I've always been an Asus mobo guy.

Hey thanks again for the info on prime95 you gave me on my other thread, it's now saving me a ton of time.
 
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post #7 of 12
Do you have any mosfet cooling on your board? Might wanna look into a MST-88 to be on the safe side.

I've had my FSB up to 275, most I ever put to it was 1.4v CPU NB. At around 250 it'll run at about 1.35v and 2750 NB, but can't get it to run at 3000 unless I lower my CPU OC. It can go over 300 so you should have no problems, but like Sandman said, take your time, just throwing numbers and voltages at it will only lengthen the time it takes to find the right stable settings.

It's a decent board, great if you don't want to push your OC's too high and are on a single card solution, but doesn't have the greatest BIOS. I've been itching to pick up an open box ASUS M4A89GTD, to hold me over till Bulldozer mobo's come out, but I can't justify the hassle to get only a little mhz more out of my system.
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post #8 of 12
Thread Starter 
I actually got the Enzotech you're talking about and installed.

Hey Sandman, yeah I started with slightly increasing the ref clocks like the good old days (was doing it at 1mhz intervals since thats what I used to do). It just drove me insane since sometimes 1mhz more and I'll be stable again. This is my first OC in 10 years.

I gave up and just tried jumping FSB to match 1 multiplier on my CPU/NB freq's. Hoping the lower multiplier will allow me to run less voltage.

Testing 222 FSB right now but aside getting a little more speed at my current voltage, haven't able to tone my voltage on the CPU-NB down.

Tried 250 FSB but finding my RAM hates certain dividers.

Ahh overclocking, by the time I'm satisfied with this OC it'll probably be time to upgrade.

At this rate I'll never have time to actually play some games on the rig.

Currently at

CPU Freq : 3773.95 MHz (222 * 17) with 1.475 vcore
Nb Freq: 2664 mhz (222 x 12) at 1.4v's (can't seem to get it lower till I drop my Nb freq's below 2500 mhz)
Ram: 740 mhz at 8-8-8-22-31-1T at stock voltage

Next step is to try 250 FSB and figure out which RAM divider to use. Something on my system hates certain dividers.

So far 1 hr into prime at max temps peaking at 54.
Edited by evilferret - 1/18/11 at 6:27pm
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post #9 of 12
Another tide bit, just in case. When you get to 250 things tend to mellow out a bit across the board with more common freq settings. Try to isolate just the HTT (FSB) and it's settings first than go back and add the cpu make that stable than go for NB Freq and then finally the ram. Doing things isolated cuts out the guess work sometimes as to which area is actually the problem. Sometimes with so many areas changing all at once it can be a real PITA lol.
 
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post #10 of 12
Thread Starter 
Well just had another failure.

Guess its time to test if NB voltage does anything.

Failed at 1 hr 36 mins in prime95.

Upped voltage from stock 1.1v to 1.2v.

Guess I have to wait to see if it did anything.

I might give up playing with the FSB on this setup. FSB bsod's seem to corrupt my HD. My HT is as close to 2000 as I can get it. I'm sitting at 1998.1.

Wow crashed earlier this time. Guess it does nothing. Back to my stable settings for now so I can play some games. Thanks all.

I'll try tomorrow again after work.
Edited by evilferret - 1/18/11 at 7:09pm
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Samsung 830 - 128 gig VelociRaptor 300gig Random Toshiba 3TB Liteon 24x DVD-RW OEM  
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Cosair H100 Windows 7 Pro x64 Xstar 1440p Realforce TKL 
PowerCaseMouseAudio
Seasonic x750 Arc Mini RAT7 Fiio E10 
CPUMotherboardGraphicsRAM
Phenom x4 955 BE Gigabyte 870a-UD3 XFX 6870 4 gig G-skills 1600 mhz CL9 
Hard DriveOptical DriveOSMonitor
64 gig Microcenter SSD / 1TB Samsung F3 Random DVD-RW W7 64 Bit Ultimate Asus VH236H 
KeyboardPowerCase
U9BL Cosair 750 TX CoolerMaster 690 II 
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