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Phenom II X4: some advice with stabilizing needed. - Page 2

post #11 of 18
I'd update the mobo. It's not quite equipped to handle the stress your overclocking is throwing on it. Get something with VRM cooling, full ATX board. Micro ATX boards aren't usually meant to be pushed really hard, with their lack of VRM cooling to begin with.

Just my opinion.
 
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post #12 of 18
Thread Starter 
This would mean for me to get new RAM as well, as AM2+ my current rig has 8GB DDR2 installed. AM3 and above only supports DDR3.


Are there any suggestions, what would be a good AM3-Board (since the Phenom II X4 is AM2+ and AM3 and also fits in AM3+) which is still available, and therefore just needs new RAM? I only need a single GPU and preferably with AMD chipset so I don't have to mess with new chipset drivers so much.... (my signature isnt correct, its an M4A785-M)
Edited by SoulFlight - 3/23/14 at 5:12am
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post #13 of 18
IMO why get AM3 when AM3+ would serve better and longer.

For a budget OC AM3+ board look at maybe the ASRock 990FX Extreme3 a bit higher is Gigabyte 990FXA-UD3 (either rev 1.0 or 4.0, in between they have some issues) higher again is ASUS Sabertooth 990FX R2.0.
post #14 of 18
Thread Starter 
OK, I will keep that in mind. wink.gif thx


Anyways I am still experimenting with my current machine and got the Intel Burn Test tool suggested by deadboy90. Thats a real burner I noticed. I get 10 completed maximum tests at 3,8 Ghz and all default voltages. 3,9 Ghz with default voltages crash after 4 - 6. 3,8 Ghz. With the stable 3,8 Ghz test, my temps were about 46°c.

So, I can either leave it at that or beyond 3,8 Ghz I definitely need to adjust voltages.
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post #15 of 18
you can still bump the volts...

you're correct, under load those temps are fine...you can push a Phenom II all the way to 1.5 (under water) as long as your temps aren't going 66+ under load.....

I tried finding an old cpuz banner with one of my PII 975 BE oc's Im POSITIVE it ran at 4.4ghz stable on an Asus m4a88t-i deluxe mini itx board i dont remember the exact voltage, but i think it was somewhere in the 1.46-1.48 range.... (using a corsair H-80)

p.s.

take the heatsinks off of the chokes (the larger grey cubes) and put them on the v.r. chips you missed...(the ones to the left in your pic)
Edited by badtaylorx - 3/23/14 at 2:05pm
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post #16 of 18
Thread Starter 
Now it gets interesting: I increased to 3,9 Ghz and did not change any volts but turned the "Load Line Calibration" down 3 notches from 51,6 to some 41 %.

Intel Burn test now easily completes the 10 maximum rounds @ 3,9 Ghz and around 48°C. Every voltage still on "auto" in BIOS and changed only LLC and multiplier.

But what is this LLC setting exactly? I have read it is meant to protect the CPU from voltage spikes and turns voltage down a bit, so decreasing it increases the voltage in the CPU without actually increase vcore.

For me this seems to be a nice workaround because increasing Vcore too much overheats my MoBo, but what exactly am I doing then?


Update: after a lot of testing it seems there is no way to get stable at 4,0 Ghz. No matter what I increase, the test crashes or the machine restarts after max. 2 minutes of testing. However, 3,9 Ghz is stable at stock voltages and 41,9 % LLC.
It seems that the CPU still has reserves, but the MoBo just won't make it. I think I leave it at that.
Edited by SoulFlight - 3/23/14 at 6:51pm
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post #17 of 18
It's NB and DDR2 that's holding you up. My 965Be needs 1.5v for 4.2GHz and is under Mugen3 air cooler. Needs even more volts for multiplier only OC.
post #18 of 18
Thread Starter 
3950 Mhz, thats all I get out of it then I raise the ref clock to 202 Mhz without starting to fail stress tests. Its OK, 50 Mhz sacrificed in favour of assured stability. I'll aim for a new AM3+ MoBo and RAM in long term though.....although it is strange that somewhere between 3950 and 4000, there seems to be a hard limit.
Edited by SoulFlight - 3/24/14 at 7:06am
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be quiet! 500 W Corsair 330R 
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Hard DriveOptical DriveOSMonitor
3x Samsung 1TB None Win7 64bit pro iiyama prolite 2475HDS 
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be quiet! 500 W Corsair 330R 
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