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Can't seem to reach 4GHz

post #1 of 11
Thread Starter 
I have been trying to overclock my 1090T and I can't get above 3800MHz and I don't know why. I took the multiplier up by .5 every time and had my CPU voltage at 1.45 but I crash at 19 multiplier. Is this a limitation of my motherboard? I think that the cooler master hyper 212 plus is adequite cooling set at 100% fan speed. I was just wondering if there was something else that I needed to change so that it would work.

And my system is listed below
post #2 of 11
Try lowering your RAM speeds (your stock 1600 could be getting too high from the NB)
bump voltage to 1.5 (i wouldn't go any higher than that. Phenom II is rated at 1.5)
post #3 of 11
Thread Starter 
Well I bumped up the voltage to 1.47 and I seem to be stable at 19 multiplier and I'm about to try 19.5. Hopefully I don't crash....
post #4 of 11
Quote:
Originally Posted by drawoh kcirtap View Post
Well I bumped up the voltage to 1.47 and I seem to be stable at 19 multiplier and I'm about to try 19.5. Hopefully I don't crash....
did you run Prime95?
just put it to 1.5
as long as you have decent cooling and temp tracking, it will be perfectly fine.
i had my voltage at 1.68 before and it was fine (i don't recommend that though)


Here, i got something for you:
http://www.overclock.net/amd-general...ing-guide.html
Follow this step by step and this should help you get to 4GHz
Edited by Hazzeedayz - 8/18/11 at 10:26am
post #5 of 11
1. Are you overclocking from BIOS?

2. You say "crash", are you gettting a BSOD? Does it happen immediately?

3. What are your other settings at?

Possible things to try based off the information:

Mine was much more stable with higher FSB like 250x16 for 4GHZ as appose to a higher multiplier like 200x20. See if that's true for you as well.

Every chip is diffrent, so you may simply need more voltage. Try bumping it up a click.

It is entirely possible that yours isn't capable of 4GHZ stable. I've seen more than a handful of chips (All 1090Ts) that just couldn't do it.
post #6 of 11
Thread Starter 
Well by crash I mean that my moniter freaks out with a bunch of colors for a second, I get a fizzle sound from my computer and it reboots. And I just tried settting my bus to 240 and multiplier to 16 with 1.5 voltage and it crashed. I only get bsods if I haven't already booted into windows. When I set my bus to 240, windows worked for a few minutes running prime95 then failed. But now I seem to be stable at 230 bus and 1.5 volts and have been running Prime95 for about 15 minutes. Is there anything I can do to let me go a bit further?
post #7 of 11
Increase NB (Northbridge) speed to 2.6Ghz+ and increase CPU/NB Voltage.
post #8 of 11
Ok. Try this.
FSB at 200
CPU multipiler at 20
CPU voltage at 1.45v
NB speed 2600
CPU-NB Voltage at 1.3v
Ram speed and timing at stock speed.
HTPC
(11 items)
 
  
CPUMotherboardRAMHard Drive
AMD A-3870K AsRock A75 Pro (FM1) HyperX DDR3 1866 8 GB SAMSUNG 830 256gb 
Hard DriveOptical DriveCoolingOS
SAMSUNG EcoGreen F4 2TB Plextor Black Blu-ray Burner Phenom II X4 stock Cooler Windows 10 
MonitorPowerCase
LG M2762D-PM Glossy Black 27" 5ms (1920x1080) Antec HG 900 Gerenic ATX Case 
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HTPC
(11 items)
 
  
CPUMotherboardRAMHard Drive
AMD A-3870K AsRock A75 Pro (FM1) HyperX DDR3 1866 8 GB SAMSUNG 830 256gb 
Hard DriveOptical DriveCoolingOS
SAMSUNG EcoGreen F4 2TB Plextor Black Blu-ray Burner Phenom II X4 stock Cooler Windows 10 
MonitorPowerCase
LG M2762D-PM Glossy Black 27" 5ms (1920x1080) Antec HG 900 Gerenic ATX Case 
  hide details  
Reply
post #9 of 11
Try using higher FSB and lowering HT/NB multiplier.

e.g. 250 FSB with 16 multi, should work easier
post #10 of 11
Quote:
Originally Posted by Klinkey View Post
Try using higher FSB and lowering HT/NB multiplier.

e.g. 250 FSB with 16 multi, should work easier

the problem with doing this is that the FSB is speeding up basically everything the CPU is communicating with (a.k.a.....everything?)
So you could be increasing instability in certain parts of the board and have no idea what is causing it.

HT/NB with the multi is a bit better to see how far your clock can go while still maintaining stability. Then once you find what is causing the instability (possibly RAM for example), you can start lowering clocks in certain areas while starting to lift them in others.

personally i like clocking the FSB, i just usually only do it to see how far i can take it, then reset it to stock and start somewhere else...basically trying to find a median

dunno if this helped or not but that guide i posted before should help you more since every chip is different. Most likely the same two chips won't be stable with the same settings.
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