Depends on your mobo. They are all different. Mine is set at 19 multiplier since the P55 chipset OC better with uneven multipliers. And my bus speed for the CPU is 208. My Vcore is at 1.4.

http://valid.canardpc.com/show_oc.php?id=2116265
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MSI P55-GD65 with i5-750 @ 4.0Ghz vcore 1.370
Xigmatek Balder HS/2 120mm fans, Antec EW PSU EA750 750W
GSKILL Ripjaws 2x4Gb DDR3 1333
One 2Tb Seagate LP, two 1.5Tb LP Seagates
Gigabyte GTX 460 1Gb OC to within an inch of it's life
Lite-On 24X DVD burner, LG 12X Blu-Ray burner
COOLER MASTER Storm Scout
Win 7 Pro 64
Lots of fans spinning with little LED lights blinking

www.razzledazzleart.com

http://texascbx.blogspot.com/