Upgrading CPU in P-7805u FX

Discussion in 'Gateway and eMachines' started by Infinity29, Feb 3, 2010.

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  1. andros_forever

    andros_forever Notebook Deity

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    I recommend the T9900, I bought it for only 330 plus shipping and taxes and after installing it with some Arctic Silver and undervolting it to 1.1125 @ 11x5 multiplier, it runs very cool mostly around the 35 degrees area, while gaming it goes to 40-42 degrees max.
  2. jmsigler2

    jmsigler2 Notebook Enthusiast

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    I am researching a processor upgrade for the Gateway P-7805u FX. Similar to you, I am considering the T9600, P9700, T9900, and X9100 processors. In considering a potential move to an extreme processor like the X9100, I first looked into an 8GB memory upgrade to this system. I have determined that this laptop has a Socket P ( also known as the PGA478 ) which allows for an upgrade of Core 2Duo processors but not quad processors such as the QX9300. BGA478 processors are soldered into the motherboard and are generally not upgradeable; but that is not an issue with this system. My understanding is that the Intel X9100 extreme CPU actually has 479 pins, not 478, but that is actually okay for the PGA478 socket; my educated guess is that the extra pin unlocks the multiplier on the processor and thereby permits overclocking of the system.

    In any case, I recently found a blog that stated that recommended upgrading memory to 1333MHz (PC3-10600) over 1066MHZ (PC3-8500) if I intend to purchase an extreme processor and overclock my system. The question you might ask is, "Does the P-7805u FX support 1333MHz memory?" The answer to that question is absolutely yes. I purchased, installed and am currently running the Crucial 8GB (2x4GB) 1333MHz (PC3-10600) SODIMM DDR3 204-pin NON-ECC memory kit (CT2KIT51264BC1339) in my Gateway P-7805u FX.

    Initially, I purchased a Corsair 8GB (2x4GB) 1066MHz (PC3-8500) SODIMM DDR3 204-pin NON-ECC memory kit (CM3X8GSDKIT1066 G) and had to return it twice, the second time for a refund; interesting is the fact that this memory type is designed for and qualified by Crucial, Corsair and Gateway for this laptop, but it still did not work. My guess is that memory chips used by Corsair were part of a bad batch. I even upgraded the BIOS to version 9C.23.00, dated 10/1/2009; but this still did not help. I decided to make the switch to Crucial memory.

    Crucial qualified memory for the P-7805u at 1066MHz and 1333MHz, but Gateway only qualified memory at 1066MHz and not 1333MHz. It may be the case that 1333MHz was not in production at the time Gateway qualified memory for its system, or possibily Intel had yet to qualify 1333MHz memory for this system due to the same reason, even though the Intel Chipset was designed to support it. It should be noted that even if the JEDEC information states the 8GB is 1333MHz the P-7805u will downclock the memory to 1066MHz.

    My remaining questions are these:
    1.) If and when I upgrade my system's CPU to an Intel X9100 extreme processor and I use Throttlestop software conjunctively to allow my system to overclock, will this faster memory actually prove to provide some functional benefit? Or, will it always run at the downclocked 1066MHz, the same speed as the FSB?
    2.) Does overclocking allow me to increase the speed of the FSB? If so, does that allow me to run a faster clock cycle on the memory, up to 1333MHz?
    3.) Did I truely benefit by buying faster memory as a potential benefit to overclocking my system with an extreme processor like the X9100? Or, is my only benefit the fast that 1333MHz memory was cheaper than 1066MHz memory?

    My System Information
    OS Name Microsoft® Windows Vista™ Ultimate
    Version 6.0.6002 Service Pack 2 Build 6002
    Other OS Description Not Available
    OS Manufacturer Microsoft Corporation
    System Name
    System Manufacturer Gateway
    System Model P-7805u
    System Type x64-based PC
    Processor Intel(R) Core(TM)2 Duo CPU P8400 @ 2.26GHz, 2267 Mhz, 2 Core(s), 2 Logical Processor(s)
    BIOS Version/Date Phoenix Technologies LTD 9C.23.00, 10/1/2009
    SMBIOS Version 2.5
    Windows Directory C:\Windows
    System Directory C:\Windows\system32
    Boot Device \Device\HarddiskVolume2
    Locale United States
    Hardware Abstraction Layer Version = "6.0.6002.18005"
    User Name \jmsigler2
    Time Zone Central Standard Time
    Installed Physical Memory (RAM) 8.00 GB
    Total Physical Memory 7.99 GB
    Available Physical Memory 4.70 GB
    Total Virtual Memory 16.1 GB
    Available Virtual Memory 10.9 GB
    Page File Space 8.29 GB
    Page File C:\pagefile.sys

    1.) Crucial's Memory Qualification for Gateway P-7805u
    Memory upgrades from Crucial.com - Determine My Memory Needs
    Computer memory upgrades for Gateway P-7805u FX Edition Laptop/Notebook from Crucial.com
    2.) Gateway's Memory Qualification for the Gateway P-7805u FX
    Gateway Support - P-78 Series Notebook Specifications
    Gateway Official Site: Gateway® P-7805u FX Edition
    3.) Mobile Intel 45 Express Chipset (PM45)
    Mobile Intel® PM45 Express Chipset
    Mobile Intel PM45 Chipset - Overview
    4.) List of Intel Core 2 microprocessors
    List of Intel Core 2 microprocessors - Wikipedia, the free encyclopedia
    5.) Intel® Core™2 Duo Processor P9000 Series
    6.) Intel® Core™2 Duo Processor T9000 Series
    7.) Intel® Core™2 Extreme Mobile Processor Family
    8.) T9900 vs X9100
    9.) New T9900 CPU upgrade on my Gateway p7805u!
    10.) x9100 test result on p-7805u
    11.) Intel Core 2 Extreme X9100 (479 Pins)
    Note: This reference is wrong in saying that the T9900 supports Turbo Boost; Intel's online documentation says it does not.

    I would like to know your thoughts or obtain feedback on the what impact 1333MHz memory might have on the ability to overclock this system, if any.

    Gateway P-7805u FX
    Intel Core 2 P-8400 2.26ghz
    8GB DDR3 1333 MHz RAM
    1GB NVIDIA GeForce 9800M GTS
    Seagate Momentus ST9320421AS 320GB SATA II (3Gb/s) HDD
    17" AUO 1440x900
    Windows Vista x64 Ultimate

    P.S. I will be updating my internal storage media to two Seagate Momentus XT 500GB (with 4GB SSD Adaptive Cache Memory) HHDs later today, configured in either RAID 0 or RAID 1. This should be another big performance boost. Remaining upgrades are the CPU, LCD, mini internal communications card (Bluetooth, Direct Wi-Fi, or broadband), and possibly a biometric fingerprint reader.
  3. TANWare

    TANWare Just This Side of Senile, I think. Moderator

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    1066 is it for the chipset in these............
  4. flynnaz

    flynnaz I am a Night Elf Mohawk!

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    where is a good seller for the X9100? I am thinking the OEM version is better than the ES version, not much price difference.
  5. bladeofdeath3

    bladeofdeath3 Newbie

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    I was looking into the E8435. Many vendors say its an un-overclockable X9100. Any opinions on that processor?
  6. TANWare

    TANWare Just This Side of Senile, I think. Moderator

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