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Need help understanding Voltages

post #1 of 4
Thread Starter 
Hey everyone am in the process of overclocking my i3 530 CPU but I need some help understanding Voltages before I can start according to the i3 3 step guide i'm suppose set VTT to 1.5v but in my Biostar h55 BIOS it's default is shown as 1.169v what would be the correct number to set it too?

This are the voltages in VTT
1.150v =1.169v
1.165v
1.180v
1.195v
1.210v
1.225v
1.240v

The closest I could find is 1.150v do I set it to that?

Thanks in Advance
Edited by delow - 5/27/11 at 10:54pm
post #2 of 4
1.5v is way too high and would most likely kill your i3, id set VTT to around the 1.2-1.25v. VTT is the voltage for your IMC (internal memory controller) and really doesnt need to be higher than 1.2-1.25v for 90% of cases. only time you would need more is for faster ram like 2000mhz+
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post #3 of 4
Thread Starter 
This is the i3 guide am following http://www.techreaction.net/2010/09/...e-clarkdale/3/

For this step, there is really only one voltageadjustment to play with; VTT.

Proper VTT voltage tuning is crucial for achieving high bclock stability. Default QPI/VTT is 1.15V and to reach 200MHz bclock you’ll likely need to increase this to at least 1.2V, many CPUs will require 1.3V or more. The only way to know is to follow the instructions here and find out.

This are the voltages in VTT
1.150v =1.169v
1.165v
1.180v
1.195v
1.210v
1.225v
1.240v

I want to set it to default then work my way up when it's unstable the only problem is the lowest VTT voltage in my Biostar BIOS is 1.150v is that the default mentioned above? that's my biggest problem is Biostar BIOS Voltage numbers are not the same as those mentioned in the guide so I don't know which setting above is 1.15v as it has an extra number can you help choose the right one for 1.15v

I currently have VTT on auto with a 3.6ghz OC and the motherboard gave it a voltage of 1.351v is that about normal? I would like to reach 4ghz and tweak the voltages myself rather then my motherboard
Edited by delow - 5/28/11 at 12:36pm
post #4 of 4
im sorry, but saying that VTT being crucial to achieve high Bclock stability is kinda BS... it counts to a point, but really the main voltage used for increasing the boards Base Clock is the QPI PLL voltage. the VTT is on the cpu its self and is the voltage supplied to mainly the IMC as i stated before. in fact i briefly skimmed through the guide and i really dont think they know what they are going on about, more like they are making things up or over reacting to the effects voltages have. if you really want a good guide to overclocking your i3 id personally stick to the OCN site since i know many of the guys on here know what they are going on about
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60GB OCZ Vertex II / 3x 500GB Samsung Spinpoint EK Supreme HF Nickel, EK DCP4.0, Stealth GT 360... Windows 7 Ult 64bit Acer 22" G225HQ 
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