Intel U7600/U7700 Fsb overclock via pin jumpering?

Hi guys,

I'm looking to swap my t5200 on my Samsung q35 for a U7700 or a U7600 (prob the U7600 for the price difference and neglible speed difference).

The U series cpus are ULV and run on 10w so it should improve my battery life quite significantly (t5200 is 35w).

I saw here:
http://forums.extremeoverclocking.com/t255206.html

That someone suggested it might be possible to clock the fsb to 667mhz by jumpering two pins on the cpu.
Would this work on the U7600/U7700 too? Same socket 479 etc.

That way I could also upgrade the ram to 2gb 667mhz and get the most of the hardware.

Any ideas?

Much appreciated,
Os

 

See http://forum.notebookreview.com/showthread.php?p=4998927 . I use setfsb to overclock my U7600 from 533->667Mhz FSB.

 

Just FYI, but last I checked the U7700 and U7600 were ONLY available in solder-ball packages. You cannot upgrade the processor, and there are no pins available for any pin-modding.

 

Thanks for your replies. There are some U7700/U7600s on ebay with pins, e.g.

http://cgi.ebay.co.uk/Intel-Core-Duo-U7600-1-2G-2M-533-SLV3W-Socket-P-PGA-CPU_W0QQitemZ120445617019QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item1c0b1e437b&_trksid=p3286.m63.l1177&_trkparms=|293%3A1|294%3A50


As for setfsb, the idea of a software overclock doesn't seem as appealing even if it does give the same results! Maybe I'll give it a go anyway.

So no one has managed tried the pin jumpering on the meroms?

 

which chipset do you have?
If you have the intel santa rosa chipset then your CPU will downclock to the minimum multi after the pin mod.

you can do a hardware OC that will work:
Pin mod the PLL.

 

AFAIK there are adapters to solve this problem ie solder the BGA to the pin adapter and it becomes a PGA. I wonder if it has any height implications.

 

I'm getting a little ahead of myself here. Can anyone answer a few questions?

Are the ULV U7600/U7700 just undervolted, underclocked versions of my T5200 that comes stock with my laptop?

I have been investigating undervolting my stock t5200; am I able to undervolt it to a similar vcore as those ULV cpus use or are they locked in that way too?

I'll prob look to to getting the fsb to 667mhz on this too.

I'm pretty sure I haven't got a Santa Rosa chipset too.

 

ok answering some of my own questions here, but its for the benefit of anyone else in a similar position.

I can VID mod my CPU to lower my vcore by -0.1 (VID3) or -0.2 (VID4) as explained here:
http://forum.notebookreview.com/showthread.php?t=390696

I can't do the BSEL mod (same link as above) on my laptop because it only works on ATI chipsets and Intel chipsets will lower the multiplier to x6 if it detects a change in fsb from the mod.


Looking into doing the PLL mod but I'm not quite sure how to find the PPL for my Samsung q35.

 

most likely the PLL is an ICS chip or a silego chip. they also usually have a crystal near them.

Just search your motherboard till you find it.
If you want I will give you a photo of my PLL.

I have done a PLL mod recently.
check the thread in my sig about clockgen and setfsb.

 

Almost. The ULV CPUs are chosen from the best batches of various CPUs for power consumption and lower voltage. Like there will be some samples which excel in certain aspects compared to others, and for ULV CPUs its power.

You can undervolt the T5200 but there's a reason ULV CPUs are binned for low power...

 

With a 533Mhz FSB, I was able to use a voltage as low as 0.7500v with my T5300. I think you could get a similar result with your T5200.