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Voltage for BCLK adjustment?

post #1 of 2
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I've been searching, but I haven't found a clear answer on which voltage to increase when using a higher base clock. Would I up the System agent voltage, PCH or something else?
    
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post #2 of 2

I think it's safe to say that within the margins of SB bClk overclocking (5% ish) only System Agent and memory related voltages matters.

 

Typically your RAM will run a couple of cycles faster (unless you compensated for this by lowering the multiplier/increasing divider) and that means your memory controller will also run faster. Actually the entire "uncore" (parts of the CPU that are not used for calculations/cores) will run faster. The "uncore" is called System Agent.

 

The PCI-E controller however will also run faster, which will be the bottleneck when you overclock via bClk.

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Intel Xeon E5-4650 Intel Xeon E5-4650 Asus Z9PE-D8 WS GeForce GTX 780 Ti 
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4 x 4GB Corsair Dominator Platinum 4 x 4GB Corsair Dominator Platinum Samsung Spinpoint F3 2TB Sandisk Ultra 64GB 
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