P-7805U X9100 Heat Questions

I have a P-7805U laptop and I was planing on getting a more powerful CPU but was concerned that the CPU may overheat in my system. I wanted to buy a X9100 mainly because its a cheaper than the T9900 or T9800. At least on eBay. So my questions are...

1. Will my laptop and or CPU be damaged if I use the X9100 without any undervolting or extra cooling when playing games like Crysis or GTAIV?

2. Will my laptop see the X9100 as 3.06GHz?

3. Are there any other downsides to doing this besides lower battery life?

Thanks.

 

Got a X9100 C0 Stepping in mine.

1). Probably not but it certainly will get VERY hot. Mine currently idles @ 61C and that is with undervolting (0.975v @ 7x to 10x; 1.037v @ 11x; 1.075v @ 11x), ICD7 application on CPU and northbridge, overvolted modified Cryo LX running at 9v. CPU gets as hot as 90C during OCCT Linpack stress tests with all this cooling. Other users have reported their X9100s idling around 32C though!

2). Yes but you cant OC it.

3). Apart from heat issues, not really as far as i can tell. Go with a P-series or T9900 IMO. Better.

 

I bought a p-7805u on ebay with a x9100 installed (unmodified). I get 33C on idle and 91C on full load using Prime95. So im happy with it.

 

I'm about to install a X9100 right now! I'll let you know how it goes. Wish me luck

 

Installed it. Running at ~35c idle. Got up to 70c while running WIE

using some generic compound that shirleyfu shipped with the piece. going to get some ICD7 later today.

Install was a snap following both parts of this vid

http://www.youtube.com/watch?v=oz5e-vFHQ4M&feature=related

credit goes to Capper5016 for the instructional vids

Going to run 3dmark later today as well

 

why am I the only X9100 who idles at 61C GAH!! Mine's C0 stepping; how about yours?

 

You're idling at 61 now! holy crap on a cracker!

Thats almost twice my x9000.

you have to have a bad Thermal compound application... or something

What are you maxing out at? 130?

 

E0 stepping. However if its any consolation I am now in a room where the room temp is about 85f. Im running at 44c idle

actually that probably just made you feel worse

 

i also have an x9100 with E0 stepping and mine idles at (currently) 38c its about 85f in the room im in.

 

With the those temps and the inability to OC via multiplier, I wonder how much cooler a 35W T9900 would run vs. an X9100.

 

What is the main difference between t9900 and x9100 besides price.

 

Look for those two procs and look at the specs..

http://www.notebookcheck.net/Mobile-Processors-Benchmarklist.2436.0.html

http://www.techarp.com/showarticle.aspx?artno=347&pgno=8

 

And if all that stuff may as well had been written in Klingon to you, this is what it comes down to

The X9100 uses a lot more power and generates a lot more heat than the T9900, however it seems to perform marginally better

EDIT: not marginally. moderately is probably a better word

 

I still max out at around 83C but idle temps are the problem.

Andrew from IC has kindly agreed to send me a tube of ICD7 to try out TIM application again given that i dont have ICD7 left from my ebay purchase.

I'm guessing it's the northbridge that is causing the problem despite the fact i put a massive glouble of ICD7 on it 1st time round

 

Thanks for all the input. I ended up buying a T9600 instead because it was a little cheaper. I have looked up how to replace the CPU already thanks to this forum.

Thanks again.

 

Just thought I may shed some light on some people with regard to this matter:
I have a 7801u, I upgraded to an x9100 ES with E0 stepping from Shirlyfu on Ebay. I gotta say I couldn't be more satisfied, the E0 temperatures run MUCH lower than the C0 temperatures. It idles at 29 - 32C and left overnight running prime 95 for 7 hours temps never went above 49C. This may sound shocking as I was shocked myself when I took a look that morning.

I can certainly post the procedure I went through if anyone is interested.