Hi, recently i really got into overclocking locked sandy bridge cpus like the i3 2100, i5 2400 ect. My question is how high can those cpus clock the fsb on ambient cooling.   

Expect around average 104 to 107bclock straight boot from bios.. But also check the IMC Some cpus have solid block but can't clock memory high... 

There are a few settings that can get you almost 1fsb higer on air that I don't think many people have tried. If you want to buy my 2400 let me know. It does 111 on air. 

12 hours ago, Leeghoofd said:

Expect around average 104 to 107bclock straight boot from bios.. But also check the IMC Some cpus have solid block but can't clock memory high... 

ah thanks for the input, then what should a good imc do

3 minutes ago, twopaca said:

ah thanks for the input, then what should a good imc do

If it can't do 2133 on air I would not bother with it 

4 minutes ago, Mythical tech said:

If it can't do 2133 on air I would not bother with it 

Thanks, and the 2400 sounds interesting, i might get it after i am done with high school  

Depends on the CPU... Best is to compare with results at the bot... 1866mhz is a start... But I had several good bclocking cpus but max bootable mem divider only 1600mhz... Not gonna cut it in superpi 32m or geekbenches... 

Euh Sandy bridge and 2400mhz, good luck

One of my chips can almost do 2400 mhz but it has to do it with the 2133 divider and bclk to get there. It might be able to do more but my boards tops out at about 111mhz so I can't get it above 2350

Edited March 29, 20205 yr by Mythical tech

what vccsa, and io voltages are a good starting point 

For locked sandy I use stock on ambient 

1 hour ago, Mythical tech said:

One of my chips can almost do 2400 mhz but it has to do it with the 2133 divider and bclk to get there. It might be able to do more but my boards tops out at about 111mhz so I can't get it above 2350

so why promote 2400, that's rather rare than random, Twopaca will search for the impossible....

maybe you can try to drop one mem divider and it could be your board surpasses 111....

Sandy IMC is not that super,  some can do 2250-2300ish tight, others won't even make it to 2000 when bclocking... especially the IMC on these locked CPU's are in general so so 

All depends on CPU blockability/ IMC quality / memory use/  motehrboard and benchmark that you run, I'm only interested in 32M stable btw, no need for 2300+ ,on wprime ?

4 minutes ago, Leeghoofd said:

so why promote 2400, that's rather rare than random, Twopaca will search for the impossible....

maybe you can try to drop one mem divider and it could be your board surpasses 111....

Sandy IMC is not that super,  some can do 2250-2300ish tight, others won't even make it to 2000 when bclocking... especially the IMC on these locked CPU's are in general so so 

All depends on CPU blockability/ IMC quality / memory use/  motehrboard and benchmark that you run, I'm only interested in 32M stable btw, no need for 2300+ ,on wprime ?

I was promoting 2133 for binning standards. "If it can't do 2133 on air I would not bother with it" I think there might have been an initial confusion between 2400mhz and i5 2400