Pinmod for Core i3/i5/i7 by Pain_666

In the past it wasn't so difficult to overclock an Intel CPU even if the mainboard didn't support FSB overclocking. Thanks to the different straps, preset FSB in CPU registry, we could pinmod the CPU to run at 266, 333 or 400MHz BCLK. With the new Nehalem platform, however, we can only overclock by increasing the BCLK frequency; in contrary to the previous LGA775 platform, this reference clock doesn't come in different straps, making it more difficult to overclock without mainboard bios tools.

Pain_666, a Russian overclocker, has found a workaround for this problem. Instead of modifying the CPU itself, we modify the default setting of the PLL. Doing so, we can increase the BCLK from 133MHz to 166 and even 200MHz!


10

Belgium Massman says:

Finally someone who makes good use of PLL datasheets! Excellent.

United States Bobnova says:

Glorious! I was just thinking about the sad lack of pinmods for core i stuff yesterday.

Netherlands Drucchi says:

Wow, excellent! An amazing find! Great to know that some people really get to know the 1156 socket & PLL-circuit in-and-out just like on previous intel-sockets.

kikicoco1334 says:

hmm... fun!

Belgium HybridChiller says:

but what it says in the picture ? what to do with those pins ?

United States V2-V3 says:

I wouldn't expect anything less from our Russian brothers! keep up the good work your crazy Over-cloxzorz!

Russian Federation oDDiTy says:

Chiller said: but what it says in the picture ?

what to do with those pins ?


You have to unsolder that resistor, it is already removed in the picture.
This mod works with clock generator ICS9LPRS113AKLF which was in his MSI GX740 laptop.

United States Johnksss says:

very good indeed!! to bad i dont have a gx740..:(

GENiEBEN says:

I don't have the datasheet of this, assuming it was the REF_0/CPU_SEL pin?

Russian Federation Pain_666 says:

GENIEBEN SAYS:

I don't have the datasheet of this, assuming it was the REF_0/CPU_SEL pin?

On the picture pin 13 - FSLB/PCICLK3_2x. Another two: 18 - FSLA/USB_48MHz, 71 - FSLC/REF0_2x

Please log in or register to comment.

Leave a Reply: (BBCODE allowed: [B], [QUOTE], [I], [URL], [IMG],...)