Other CPU for Asus N71Vn/X77Vn/Pro78VG Laptop

[Marinebulldog100]

                   

Hello, everyone

I would like to install a new CPU in my good and trusty laptop.  The bios probably doesn't allow it.

The current CPU is an Intel Mobile Core 2 Duo P8700 with 2x 2.53 GHz.

According to our own research, the chipset could control a higher CPU.

I am aware that it is difficult to install a significantly higher performing CPU in a laptop.

Factors such as power supply, voltage converter and cooling are often KO criteria in order to be able to realize this.

Not to mention that the price of a new CPU often exceeds the value of a newer laptop.

Since my laptop is now about 14 years old and can still handle Windows 10, 8GB RAM and an SSD, now is the time to swap the CPU from 2 cores to 4 cores.

I bought a tested Intel Mobile Core 2 Extreme QX9300 (SLB5J for Socket P) with 4x 2.53 GHz for less than €100 and just installed it.

According to the information sheet from Intel:

The Core 2 Duo P8700 with the red (pink) socket P has a TDP value of 25W, a VID voltage range of 1.00V - 1.25V and a TJUNCTION up to 105°C.

Source: Intel® Core™2 Duo Processor P8700


The Core 2 Extreme QX9300 for the red (pink) socket P has a TDP value of 45W, a VID voltage range of 1,050V-1,175V and a TJUNCTION up to 100°C.

Source: Intel® Core™2 Extreme Processor QX9300


The laptop stays at a black screen with the QX9300.  The fan spins and everything is assembled correctly.  When I cross-check with the P8700, the screen appears immediately and I also get into the bios.

BIOS is currently available on the German homepage Version 203 from 12/02/2009 (10/16/2009).

https://www.asus.com/supportonly/X77VN/HelpDesk_BIOS/
https://www.asus.com/supportonly/N71Vn/HelpDesk_BIOS/
https://www.asus.com/supportonly/Pro78VG/HelpDesk_BIOS/

Kind regards
Marine Bulldog100

Edit:
- Picture CPU-Z
- Link to the Bios

[DeathBringer]

A few motherboards with Socket P can boot quad cores CPUs. It's hardware incompatibility.
But you can try the motherboard's mod for quad core CPU supporting.
BTW: current BIOS already has suitable microcode for QX9300

[Marinebulldog100]

I do not understand that.
I have a CPU P8700 2 times 2.53 GHz with FSB 1066.
The new CPU Qx9300 4 times 2.53 GHz with FSB 1066.
You write to me that the microcode for the new CPU is available!
But what should I modding then?

I read a trick here on the forum for Asus laptops. Should I do that once and see if it helps?

1) remove AC jack, Main Battery, and CMOS Battery
2) remove HDD and all DIMMs
3) install new CPU
4) wait 10 mins
5) press and hold power button for 30 sec.
6) install CMOS Battery and one DIMM only, inject AC jack (without Main Battery!)
7) try to boot your laptop.

https://www.bios-mods.com/forum/Thread-C...-Asus-X51L

[DeathBringer]

It isn't BIOS issue, but it's hardware incompatibility.
You can try to isolate or cut off five pins:

[Marinebulldog100]

Thank you for helping

This is a mystery to me. I have a pink socket P.
This socket is not correctly controlled by the board for the C 2 Quad CPU?
I need to isolate pins?
I have to bend the RAM MHz?
Then do I also have to identify cores 3 and 4 in the operating system?

This can not be it?

I understand it affects the T-series if it can't detect a Penryn processor. But I already have a Penryn processor in it. The microcode is available. The RAM runs at "533 MHz". The graphics card (nvidia m240) knows the volt control.

I'm sorry, I don't understand. The hardware is incompatible?

Do you mean the motherboard is not compatible?

https://www.notebookcheck.com/Asus-N71-S...267.0.html
Maybe Quadcore CPU is Compatibel

https://icecat.biz/de-be/p/asus/90nx0aa1...70737.html
The same motherboard???

[DeathBringer]

Do you mean the motherboard is not compatible?

Your motherboard isn't compatible with quad core CPUs.

[Marinebulldog100]

i edit some posts

           

[Marinebulldog100]

I am grateful to you for your help

Maybe I expressed myself incorrectly and we talk past each other

The xq9300 CPU is "Core 2 extreme" not "Core 2 Quad", but the socket does both!

https://de.wikipedia.org/wiki/Intel_Core_2

[DeathBringer]

QX9300 has 4 cores.
You motherboard supports CPUs with 1-2 cores only.

[Marinebulldog100]

That's exactly what I don't understand.  The model N71VN-TY047V, BE has a quad core q9000 with 2 GHz.  It's the same board.  Unless the board has a different revision.  My CPU-z says I have revision 1.0.  I saw a mainboard for sale on the Internet with revision 2.1, but it was defective.