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Overclocking 630 propus with A880G+

1176 Views 18 Replies 4 Participants Last post by  ztw9
Hello, I have the BioStar a880g+ am3 motherbord and an athlon ii x4 630 propus, and I am having difficulty overclocking and unlocking the cpu.
Would someone please help me with overclocking settings for this type of BIOS? I am unfamiliar with it.

Also as far as unlocking goes, I enable the ACC and save it, but on boot there are hypertransport sync errors. When I go into the bios to reset it, it shows that the L3 cache is indeed unlocked, but when I unlock it I cannot boot.
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Disabling Cool'n'Quiet and C1E is unnecessary for overclocking. It makes no difference and more or less works as intended most of the time. I run this beast OC on my 1055T with BOTH CnQ and C1E enabled. The lower clock speed when idle can benefit CPU longetivity, idle temperature, and fan longetivity, especially when overclocked and beyond the limits.

You might want to know that there are things that can limit CPU overclocking potential and safe overclocking potential. If you have a generic 9-9-9 kit (I believe these are the only timings that G.Skill Sniper DDR3-1333 sells with), expect not to go far, for generic 1333 9-9-9 kits can use ICs with disregard to any binning process (i.e. any IC can be used as 1333 CL9 is a minimum/generic spec - including ICs not suited for overclocking). Pushing the bus clock forward to OC the CPU may require pushing the RAM, and certain options i.e. higher clock speeds may be incapable for you in terms of both the RAM and CPU. The motherboard may also be a limitation. You are running a 3+1 phase VRM of lower quality (Biostar A-series) with no cooling whatsoever (due to the Xigmatek 92mm cooler, the VRMs get no airflow). I advise that you bring cooling to the VRMs or avoid using any CPU overvolt (which may stress the VRMs beyond the point of safe limit and potentially cause a failure).

Overclocking the x4 630 basically involves the raising of the bus clock. First see what bus clock your board can handle, making sure to lower RAM/NB/HT/CPU multipliers as you go along to stock or below stock. Stop the bus clock at a place where you can set the RAM to something you know will work (i.e. 1333 9-9-9 or 1066 7-7-7), then begin upping multipliers one at a time and stress testing in between. Start with the CPU multiplier; increase voltage as needed [note that I recommend you cool the VRMs before overvolting]. Run IntelBurnTest high 10-20 passes in between each time. Run Prime95 overnight when you are finished. Then overclock the NB to gain memory bandwidth, upping the CPU-NB voltage as needed. Use Prime95 only to test the NB overclock; 2-3 hours in between. The NB overclock can be arguably more important than CPU because the bandwidth it opens can make more difference. 3800Mhz with 2.8Ghz NB can be better than 4Ghz with stock 2Ghz NB. Leave the HT clock as close to 2000Mhz (+/- 100-200Mhz) as you can. RAM should already be set, or you could push it further and see how far it goes (though if it is a generic kit it may not go far).
 

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Some Propus cores are locked Deneb dies, unlocking rules are however the same for L3 cache as with cores; you may or may not find stability and if you do not find stability you must accept it, for unlocking is a bonus only.
 
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