Overclock i7 4500U?

I just found out from intel overclock pdf file that i7-4650U, i7-4600U & i7-4558U have 400MHz bins so wondering if i7 4500U also can? Anyone has Intel XTU screenshoot?

 

No Ocing is available for the ULV processors... XTU or throttlestop won't be able to OC although throttlestop might be able to keep the thing at turbo clocks for longer...

 

http://www.sstc.co.jp/products/Intel/SF13_AIOS001_100.pdf

Any comment about page 24?

 

TS will keep it on max turbo if the temps are okay. Nothing else.

 

Doesn't OC. People've tried. If you manage to do it, please show us. We'll ask you for proof until you're sick of the forum, though.

 

Yup... Even then don't expect much as the ULV CPU's will heat up quickly and keeping the turbo clock might cause problems...

 

Mine can do full boost on both core 24/7 under 80°C under gaming load for hours.

 

Thanks for the input. Even TS is pointless is some system like my Samsung laptop as it is somehow limited to max 71C so thermal throttle limit the speed. Mine is an i5 and I doubt having i7 will make any difference due to the temp limit

 

Yeah, it's a lost cause. I have an i5-4200u in my Sony laptop that will throttle even at low temps. The igpu is even worse. The clock speed bounces all over the place.

 

Sometimes, it may not even be thermal throttle, the TDP of U models is pretty low to start with, so they may just be hitting their max TDP before they can clock at full turbo under sustained load.

 

The i7s are still dual cores lol. It doesn't really make much difference once you're in ULV stage.

 

You've repasted and your lucky your ULV processor doesn't throttle at those temps..

That is exactly the problem with many of them.. The TDP limit is too low and you can't change that in XTU... Heating is another problem as I've stated earlier.. If I remember correctly, HT or someone stated that the ULV processors overheat ( I think it was a i7-4500u) like hell when at turbo clocks for a while so that is a major issue too..

 

Dual copper heatpipe and dual fan inside. IC Diamond paste and allways on the table.This thing is a BEAST!

 

I just wondered why they set 70C as the limit for U, instead of say 97C like other non-U CPU?

 

T[SUB]j[/SUB] is at 100 ^oC: ARK | Intel® Core™ i7-4500U Processor (4M Cache, up to 3.00 GHz)

that 70 ^oC is either the CPU hitting its TDP at that particular temp and clocking down because of it, bad implementation of something like BDPROCHOT or just plain stupidity from the manufacturer's part (in other words, them deciding that it should throttle at 70 ^oC)

Intel XTU would be able to tell if it's the TDP limit.

 

The Max CPU TDP reached for my i5 4200U during stressing is 13W but after thermal throatting its at 12W so I suspect its temperature limiting

 

I can't remember whether XTU displays the TDP for CPU and GPU individually or both combined, that's something to watch out for, but if the combined TDP is below 15W, then yes, it is throttling for another reason. If it's temps, it's the manufacturer's fault, not Intel's or you'd be throttling at 100 degrees. Throttlestop should help you with that in that case.

 

Going to study Throttlestop now.. downloaded before but didn't read the manual yet

 

Yeah I doubt most laptops with ULV processors would have such a set up ...

 

17W CPU requiring dual fan setup... mind blown.

But most importantly, they didn't artificially limit the CPU performance. The i7 and i5 U CPU's and IGPU's are quite capable, just they are so gimped by TDP by most manufacturers it kind of makes it a moot point to even offer them in the first place.

 

The Haswell generation is much worse than the Ivy. And most of the manufacturers are under estimate the TDP value for a more quiet machine. For Example the Dell Inspiron series. The CPU ha s a TDP value of 15W but the BIOS is restricted to 11-12W massive Throttling even when the temps are as low as 60-65°C...

 

Which is funny when they sell you an "upgraded" laptop with an i7 "U" CPU for $300 more than the i5 "U" CPU when they both will perform about the same due to this very reason. On paper it should be considerably faster, but reality is they gimped the system so it's really just money out the door for nothing. I'm surprised there hasn't been a class action lawsuit due to this.

 

I am thinking possible reason is maybe if they allow say 97C, the chassis would be too hot to touch or the other components of their laptop will deform/melt... otherwise it's really unacceptable, especially for those who live in hot country like in my case where the room temp is already 30C

 

No, one little chip hitting 97C won't make the case heat up, and that's what the fan is for.