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First time OC, loud noise and freezing!

post #1 of 6
Thread Starter 
Decided to try and OC my system to see what she could do. Tried a very moderate OC to start, pushing the Baseclock from 133 to 173 putting me at roughly 3.6x with a 21x multiplier. Nothing too drastic- I did not mess with any voltage settings.

Booted up fine, and seemed to be running ok. After a brief amount of time however, the computer locked up and my speakers started emitting a piercing static noise.

My idea is that it might have something to do with my memory. It is the OCZ Special Ops edition 1600DDR3 but my mobo sees it at 1333mHz. I noticed when I overclocked the CPU, by changing the base clock to 173, it made the RAM frequency jump to 1733mHz. I have no way of changing this- it is greyed out in BIOS. For now, I moved the (SPD?) from "Auto" to "8x" and the memory frequency is slightly over the 1333mHz it was at originally.

Could this be the culprit? Should I look into getting better RAM for my system?

Thanks
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post #2 of 6
I'm fairly new to overclocking myself. But to me 133 to 173 is a big jump, especially to not have to change any voltages. Being that high its probably better to not have the voltages on auto as I've read that a board can put too much voltage when set at auto. I dont know any specs for the i5's so cant tell you a range of voltage to stay within, but I'm sure quite a few others on here could. Also there should be a way to manually change your RAM setting, not familiar with gigabyte boards though.
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post #3 of 6
Quote:
Originally Posted by jcraft View Post
Decided to try and OC my system to see what she could do. Tried a very moderate OC to start, pushing the Baseclock from 133 to 173 putting me at roughly 3.6x with a 21x multiplier. Nothing too drastic- I did not mess with any voltage settings.

Booted up fine, and seemed to be running ok. After a brief amount of time however, the computer locked up and my speakers started emitting a piercing static noise.

My idea is that it might have something to do with my memory. It is the OCZ Special Ops edition 1600DDR3 but my mobo sees it at 1333mHz. I noticed when I overclocked the CPU, by changing the base clock to 173, it made the RAM frequency jump to 1733mHz. I have no way of changing this- it is greyed out in BIOS. For now, I moved the (SPD?) from "Auto" to "8x" and the memory frequency is slightly over the 1333mHz it was at originally.

Could this be the culprit? Should I look into getting better RAM for my system?

Thanks
It sounds like you have your memory linked with your FSB. If you can unlink it, it should solve the memory problem. Someone correct me if I'm wrong.
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post #4 of 6
Kinda of this ^,
but not really you should change the spd from 8x to 6x.
Also up to 173 is a fairly large bump with no v increase i would add some to vcore or just slowly change it untill it becomes unstable then add more vcore.
Also linX it to test for stability.
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post #5 of 6
I would really consider reading a lot more before overclocking, there's a fair few factors in i-cores. You wont want to leave voltages on auto - that is what damages systems.

Firstly, what cooler are you using, do you have any temperature monitoring software such as realtemp or core temp, and were you stress testing or just using your computer?

(use LinX, Intel Burn Test or Prime95) (or even more ideally a combination of prime with one of the others)
    
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post #6 of 6
Thread Starter 
Yes, the memory frequency does seem to be linked and it seems like most Gigabyte brand motherboards do this... a search on the web shows this to be common and something that can't be worked around.

As for dropping the memory SPD from 8x to 6x... it will effectively make my supposed "1600mHz modules" run at 1066mHz. Thats a significant loss, which brings me back to my original question of whether or not I should upgrade my memory to something better?

The fan I am using is the CoolerMaster Hyper 212 plus... should be plenty for the overclocks I am doing, don't you think?
And yes, I have been running CoreTemp in conjunction with the "All CPU" gadget for Win7 and also CPU-Z

And when the freezes happened, it was with me just using the computer normally- no stress tests have been performed.
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CPUMotherboardGraphicsRAM
i5-750 Gigabyte H55M-S2H Sapphire Radeon 6870 4GB OCZ 1600 DDR3 
Hard DriveOptical DriveOSMonitor
80gb boot, 360gb storage DVD burner 7 64bit 27" Asus VE276 
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g15 BFG-Tech GS-550 Rosewill Challenger R.A.T. 7 
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CPUMotherboardGraphicsRAM
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Hard DriveOptical DriveOSMonitor
80gb boot, 360gb storage DVD burner 7 64bit 27" Asus VE276 
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g15 BFG-Tech GS-550 Rosewill Challenger R.A.T. 7 
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