CPU upgrade and temperatures

2 replies [Last post]
Joined: 07/02/2012
Posts: 6

I was thinking about changing my laptop CPU to a more powerfull one. I've already checked the chipset compatibilities and I thought about replacing my Intel Dual Core T4200 2.0 GHz for an Intel Core 2 Duo T9400 2.53 GHz. But, as it's a laptop, the cooling system will remain stock. The T4200 voltage range is 0.975V-1.15V and the T9400 voltage range is 1.05V-1.162V. With the T4200 I'm getting pretty good temperatures (I think). About 30ºC idle and 60ºC load. So my question is: despite the T9400 increased clock speed, but practically the same core Voltage (only +0.012V), would I have much higher temperatures than I have with the T4200, or just a little bit higher? Is the CPU clock speed or voltage that increases temperature?

And I thought about two more CPUs to replace the T4200, and they are: Intel Core 2 Duo P8400 2.26 GHz and the Intel Core 2 Duo P8600 2.40 GHz, both with voltage range 1.05V-1.15V.

What do you recommend?

spawnkiller's picture
Joined: 05/06/2012
Posts: 315

changing a dual core to a dual core will do nothing... the T is laptop oriented but the core 2 duo and pentium dual-core share many of their components... the core 2 duo sure will perform better but not by far...

Anyway, are you sure your motherboard will run a 1066mhz CPU cause although it's the same CPU socket, maybe your laptop motherboard doesn't support 1066FSB... (the t4200 is 800mhz and all the other CPU listed here are 1066mhz)

PS: the T9400 score 1752 in passmark and the t4200 1270, the p8400 scores 1521 and the 8600 1630... in comparison the slowest i3 scores: 3862 (and it's a dual-core too) Maybe it's the time for an upgrade... anyway i don't think you want to throw money out when buying a 125-150$ CPU and notice the difference only in bench cause it's roughly 25-30% more, nothing else... and the slowest I3 is 110$ and more than the double performance in all type of scenarios...

Gaming PC: MSI Z77A-G45 ::: Intel Core I7 3770k @ 4.83Ghz ::: Zotac GTX970 Amped about 1500mhz Boost (OC) ::: 32GB 4*4gb G.Skill 2240mhz CL10 ::: Soundblaster XZ and ASUS Xonar DX ::: Crucial M4 128gb (windows) + Intel 330 180gb (Steam games) + 4X1TB Caviar Black (storage in raid 10) ::: Cooler Master Silent Pro Gold M1000 ::: Antec P280 ::: BeQuiet Dark Rock Pro 2 ::: Triple BenQ XL2430T ans Asus VG248QE on top ::: Logitech G510 ::: Logitech G502 ::: Logitech Z906 ::: Steelseries Siberia V-2 Black & gold edition

98% Of people under 30 surround their minds with rap music, if you're part of the 2% that stayed with rock, put this in your signature, ROCK IS BETTER!

Manic Mouse
Manic Mouse's picture
Joined: 02/01/2007
Posts: 141

Temperature-wise the Core 2 chips run amazingly cool. Your cooling system should handle that chip just fine. A good way to get that some certainty would be to go to the manufacturer of your laptop, look it up and see if they produce a model of that same laptop with a similar chip to the one you have in mind. Manufacturers don't like to use multiple cooler types in the same laptop model. There will be one cooler type for it and they will use the same cooler for all CPU chips they support. If the laptop maker lists a chip like the one you want to put in as an option, then you are set.

Keep in mind though that when you change the chip you may need to upgrade your bios to recognize the Core 2.


Asus Maximus VIII Hero, Intel i7 6700K @4.6Ghz, 64gb Corsair Vengeance Black/White 3200MHZ, MSI GTX 1070 Aero 8G OC, Samsung 840 Evo, Vertex 4, Intel 510 & Adata SX900 SSDs, wrapped in a CoolerMaster HAF XM case. Monitor 27" Samsung SyncMaster SA850 2560 x 1440