T6600 CPU upgrade in Dell 1545

I have seen videos showing that the Core 2 Duo T6600 in a Dell 1545 can be easily upgraded to a more powerful CPU. I have taken these laptops apart before to replace USB and Power assembly, so feel confident I can do it.

There are plenty of CPU's on Ebay at decent prices so seems like a good option to get a bit more life out of the laptop.

What I want to know is whether there are any rules when doing this? Do FSB and TDP of CPU's have to match my existing one?

I saw here

a list of compatible CPU's it says mine is 35w and has a FSB of 800 which suggests that the most likely choice would be

Core 2 Duo T6670 2 2 2.2 GHz 800 MHz 2MB 35W
Core 2 Duo T6900 2 2 2.5 GHz 800 MHz 2MB 35W
Core 2 Duo T6970 2 2 2.5 GHz 800 MHz 2MB 35W
Core 2 Duo T8100 2 2 2.1 GHz 800 MHz 3MB 35W
Core 2 Duo T8100 2 2 2.1 GHz 800 MHz 3MB 35W
Core 2 Duo T8300 2 2 2.4 GHz 800 MHz 3MB 35W
Core 2 Duo T9300 2 2 2.5 GHz 800 MHz 6MB 35W
Core 2 Duo T9400 2 2 2.533 GHz 1066 MHz 6MB 35W
Core 2 Duo T9500 2 2 2.6 GHz 800 MHz 6MB 35W
Core 2 Duo T9550 2 2 2.667 GHz 1066 MHz 6MB 35W
Core 2 Duo T9600 2 2 2.8 GHz 1066 MHz 6MB 35W
Core 2 Duo T9800 2 2 2.933 GHz 1066 MHz 6MB 35W
Core 2 Duo T9900 2 2 3.067 GHz 1066 MHz 6MB 35W
Core 2 Extreme X9000 2 2 2.8 GHz 800 MHz 6MB 44W
Core 2 Extreme X9100 2 2 3.067 GHz 1066 MHz 6MB 44W

But is there a chance that these faster models with a 1086MHz FSB might also work,

I have heard that the chipset has to support the upgrade, well I think it has a Mobile Intel® GM45 Express Chipset and this page says

"1066 MHz Front Side Bus support Provides faster data transfer rate compared to previous generation bus speed."

which suggests it might support any of the above

I have never seen a Dell model higher than the T6600 I have but I have seen other people saying they replaced T6600 with Core 2 Extreme X9000.

Has anyone on here actually done an upgrade of this CPU on this laptop, highest I have seen on the web is a T9550
2 answers Last reply Best Answer
More about t6600 cpu upgrade dell 1545
  1. I found out that the extreme models above require the following chipsets so they are out

    Intel GM965 Express
    Intel PM965 Express
    Intel GME965 Express

    I saw this post saying a 9550 has been made to work

    and this one says between T9550 and T9600

    Has anyone done better?
  2. Best answer
    This is another socket P laptop and they are usually maxed out at 800MHz FSB. The laptop will fail to boot with a 1066MHz CPU if it is not compatible. When upgrading you should adhere to 800MHz, the best in performance/value being the T9300.

    Inserting a 1066MHz CPU would be rejected by the BIOS and will fail to boot. Socket P laptops usually only accepts 800MHz FSB processors, unless you apply the BSEL mod on a 1066MHz processor. Applying the BSEL mod will allow you to boot with the 1066MHz CPU, however it would be downclocked and provide poorer performance over the T9300/T9500. Applying the BSEL mod to downclock the 1066MHz to 800MHz requires physical modification to the laptop, albeit it a basic procedure. For the BSEL mod on socket P, I'd look at this thread.

    However with all that said, perhaps your laptop can accept 1066MHz processors and is not limited to 800MHz by default? I'm willing to research into this for you if you please reply back with your laptop's chipset. You can find out your chipset by downloading "CPU-Z" and looking under the mainboard tab, which states your Northbridge; if you could reply with a screen shot I'll look into your laptop further.

    UPDATE: Your chipset, the GM45 natively supports 1066MHz processors. Hence you are not limited to 800MHz, you're free to install any 1066MHz CPU without any issues. However quad-core processors maybe problematic if your BIOS cannot read all 4-cores. Regardless any dual-cores processor on socket P is compatible.

    All the best. :)
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