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More RAM messing with Overclock

post #1 of 8
Thread Starter 
Adding more RAM to my PC, despite it being exactly the same model RAM, messed up with my Overclock and I now struggle to increase my FSB. Is this normal when going from 4gb to 8gb? WHat can I do to fix this? Everytime I try to increase it, from stock, the PC just refuses to start.
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post #2 of 8
The memry comtroller has to work harder with the extra ram. You can only put so much data through the controller, so the larger amount of memory has to run slower.

If you BOPS has settings you can play arounf with CPU (if amd) and northbridge settings to see if you can overclock the memory controller.
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post #3 of 8
Thread Starter 
BOPS?
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post #4 of 8
He probably hit the P instead of the O for BIOS.

You probably need to up your CPU-NB voltage and up your CPU-NB to 2600MHz or 2800MHz for some performance increases. (I'm doing 1.31v and 2800MHz)

You also might need to up your NB voltage (around 1.2v, maybe?)
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post #5 of 8
Thread Starter 
Quote:
Originally Posted by GuardianDuo View Post

He probably hit the P instead of the O for BIOS.
You probably need to up your CPU-NB voltage and up your CPU-NB to 2600MHz or 2800MHz for some performance increases. (I'm doing 1.31v and 2800MHz)
You also might need to up your NB voltage (around 1.2v, maybe?)

My NB was at 3ghz before, lol. I then dropped it down to 2.75ghz.

I'll have a play with the voltages tomorrow and report back with my findings.
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War Machine
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post #6 of 8
Oh, whoops. Ignore me on the CPU-NB part, then.

Have you tried upping the NB voltage yet?
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post #7 of 8
Thread Starter 
I tried upping NB and CPU voltages, right up to 1.5 (max safe voltage for AMD 965be). Was a no go.

I can't raise my FSB past 220 but it will fail on Prime95 tests on large FFTs so it's at 200 at the moment. Funnily enough I can raise my NB frequency though. :/ So it's definitely assocciated with raising the FSB of which it pings out when I raise it even if I have everything else at stock.

Amusingly enough, while trying out some stuff, I managed to get my highest CPU frequency to post so far at 4.4ghz. Wouldn't run in Prime95 though, needed more power! Lol. biggrin.gif

I've had to set everything back down to stock. Running everything on minimum voltages, set CPU and NB voltage to 1.45, and raisedthe CPU multiplier to 20x to get to 4ghz. That's currently running stable under Prime95 for the past 4 hours.

So basically since adding more RAM overclocking my FSB is a no go.
Edited by Lifeshield - 11/12/11 at 1:00pm
War Machine
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War Machine
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post #8 of 8
Wait, when you say NB, do you mean the CPU-NB or the NB on the motherboard?

I thought with these AM3 motherboards, there is a NB on the motherboard, and it has a separate voltage setting. Like:
2rfuf13.jpg

Do you have a CPU/NB and a regular NB voltage option in your BIOS?

Also, have you tried upping the voltages on your RAM?
Corsair seems to say the stock voltage is 1.5v, try 1.6v.

Our AM3 chips should be able to handle DRAM volts of over 2.0v.
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ChenBox
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CPUMotherboardGraphicsRAM
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Hard DriveOptical DriveOSMonitor
1TB Samsung Spinpoint F3 ASUS DRW-24B1ST ATA Device Windows 7 64-bit Professional ASUS MS236 @ 1920x1080 
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