Is it possible to overclock the CPU in LAPTOP computers?

[Coki]

Like Dell Inspiron 3800 or other laptops. They have Celeron 600 would it be possible to overclock them?

Thanks.

 

[AndyHui]

Generally, no. Additional FSB options are not implemented on laptop motherboards....laptop processors have used the 66MHz FSB for a VERY long time now; most of the stuff is integrated. With the TCPs that Intel ships both the processor and the chipset northbridge in one package, there is even less opportunity to tinker.

 

[paulip88]

Furthermore, its probably not a good idea overall. Laptops also put additional constraints on virtually anything. You can't really have good cooling, since laptops genreally have no fans, and it would be quite humorous to install that massive HSF on the chip. It would also kill battery life.

 

[Aboroth]

The mobile Celerons have 100MHz FSB.

 

[Techwhore]

rchala, i couldn't believe that so i went and checked and BAM you're right. They probably only did that b/c if it was still at a 66mhz fsb you'd need a 10.5 multiplier to get 700mhz, i don't think any other mobile celerons have 100mhz fsb, just the 700's. It's good though, at least you get the increased memory bandwidth. Oh well

 

[StickHead]

Laptops produce a lot of heat. If their was a way to overclock them(not sure) it would probably burst into flames.

 

[Aboroth]

I am pretty sure all mobile Celerons in production have 100MHz FSB. I know for a fact that the mobile 600 has 100MHz bus and I am pretty sure the 500 does too. The early models of mobile Celerons have had 66MHz FSB but none of the ones that have come out within the last year or so.
I would go look at Intel's site but for some reason I can't reach it right now. If you want to go check be my guest.

 

[Dark4ng3l]

I dont know but people sell laptops with 633mhz celerons I dont know how they reach this with 100 bus.

 

[Aboroth]

Maybe they are using laptops that don't use the mobile Celeron but instead the desktop version that runs at 66MHz bus.

 

[Zenmervolt]

The main problems I see in overclocking a laptop (other than discovering the proprietary mechanisms for altering FSB and multiplier) are heat and battery life. If overclocking a laptop were to be tried, I would suggest ONLY upping the FSB and memory bus while leaving the CPU at approximately the same speed. (i.e. Mobile PIII 850's use a 100MHz FSB and memory bus on the i440BX chipset, change the bus to 133MHz while lowering the CPU multiplier from 8.5 to 6.5) This would give you the significant advantage of the increased memory bandwidth without too much increase in heat and decrease in battery life as the processor will then be running at 864.5MHz, not much faster than originally. At least that's how my theory goes, I'm not about to trash a $4500 ThinkPad trying to test it. There are many obstacles (are the PCI/AGP and FSB frequencies linked, will So-DIMM's work at 133MHz, can the CPU multiplier be altered, etc.) to overclocking a laptop and it will likely be more trouble than you want.

Aaron Meyer

PS. Some mobile Celerons use 66MHz FSB and some use the 100MHz FSB, the newer models from manufacturers such as Dell and IBM will almost certainly have the newer 100MHz FSB Celerons, while "value" laptops based on the Celeron and not the K6-II+, will likely have the older (and cheaper) 66MHz FSB Celerons.

 

[abracadabra1]

don't believe so.