Upgrading CPU in P-7805u FX

What are the best models out there to upgrade to? I am leaning toward a t9900.

Do Quad Core and i7 work with this laptop?

 

Core i3/i5/i7 never. Quad looked possible (since a few FX mobo same as this did support Quad) initially but Gateway was stern in not making that happen with the ones that had C2D.

 

T9900 is the way to go

 

Cost benefit ratio, X9100 is the way to go. These computers run cool enough to support it.

 

For Alot less money may I suggest you consider a P9700.

P9700 TDP 28 Watts 2.8Ghz 6MB cache 1066mhz FSB

vs.

T9900 TDP 35 Watts 3.06Ghz 6MB cache 1066mhz FSB

http://ark.intel.com/Product.aspx?id=42599

or you can save and get a machine with a Core i5 540M

http://ark.intel.com/Product.aspx?id=43544

which would smoke both of these processors.

In my boat I am also considering either the P9700 or the T9900 it only depends on which I can find cheaper.

 

http://forum.notebookreview.com/showthread.php?t=423866&highlight=t9900

Assuming this deal is still good, which it appears to be since the CPU still shows up and at that price, I can't see how the X9100 is a better option, unless someone manages to unlock the BIOS to overclock past 3ghz anyways...

 

I personally find the T9600 (2.8 GHZ, 35W, 6MB, 1066bus) from Ebay at around $200 hard to beat but thats just me with my finances and speed needs.

 

The X9100 and Quad Cores are useless unless you can over clock them.

 

X9100 is cheaper than t9900 on fleabay

 

you have to remember that tdp rating on a cpu is pretty much worthless. just because its rated at say 35w doesnt mean itll be cooler then 45w tdp cpu. the tdp rating is just a worst case scenario measurement stated by intel themselves. my x9100 only runs 4 degrees c hotter then my p8400 did at full load. honestly the only thing that really gets hot on the p7805u is the hdd.

i mean take a look at the rated voltage range for both cpus

T9900 - VID Voltage Range 1.050V-1.2125V
x9100 - VID Voltage Range 1.000V-1.275V

as you can see the voltage range is extremely similar. if you give the cpu an undervolt you can further reduce the temps. the only real differences between these processors is that the x9100 has an unlock multiplier and the t9900 supports intels trusted execution technology.

the only thing that i believe you should consider on which one to buy is price.

 

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.

 

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

References:
1.) Crucial's Memory Qualification for Gateway P-7805u
Memory upgrades from Crucial.com - Determine My Memory Needs
http://www.crucial.com/systemscanne...26C3&AID=10273954&PID=3640576&SID=skim525X832
Computer memory upgrades for Gateway P-7805u FX Edition Laptop/Notebook from Crucial.com
http://www.crucial.com/store/listpa...tion&AID=10273954&PID=3640576&SID=skim525X832
2.) Gateway's Memory Qualification for the Gateway P-7805u FX
Gateway Support - P-78 Series Notebook Specifications
http://support.gateway.com/s/Mobile/2009/PSeries/P-78/P-78sp24.shtml
Gateway Official Site: Gateway® P-7805u FX Edition
http://www.gateway.com/product_spec.php?product_recid=529668231
3.) Mobile Intel 45 Express Chipset (PM45)
Mobile Intel® PM45 Express Chipset
http://ark.intel.com/chipset.aspx?familyID=35515
Mobile Intel PM45 Chipset - Overview
http://www.intel.com/products/notebook/chipsets/pm45/pm45-overview.htm
4.) List of Intel Core 2 microprocessors
List of Intel Core 2 microprocessors - Wikipedia, the free encyclopedia
http://en.wikipedia.org/wiki/List_of_Intel_Core_2_microprocessors
5.) Intel® Core™2 Duo Processor P9000 Series
http://ark.intel.com/ProductCollection.aspx?series=35572
6.) Intel® Core™2 Duo Processor T9000 Series
http://www.overclock.net/newreply.php?do=newreply&noquote=1&p=7168491
7.) Intel® Core™2 Extreme Mobile Processor Family
http://ark.intel.com/ProductCollection.aspx?familyId=34520
8.) T9900 vs X9100
http://forum.notebookreview.com/gateway-emachines/502821-t9900-vs-x9100.html
9.) New T9900 CPU upgrade on my Gateway p7805u!
http://forum.notebookreview.com/gam...-new-t9900-cpu-upgrade-my-gateway-p7805u.html
10.) x9100 test result on p-7805u
http://boardreader.com/thread/x9100_test_result_on_p_7805u_7af5X7qu1.html
11.) Intel Core 2 Extreme X9100 (479 Pins)
http://www.notebookcheck.net/Intel-Core-2-Extreme-X9100-Notebook-Processor.24825.0.html
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.

 

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

 

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

 

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

 

http://forum.notebookreview.com/gateway-emachines/550705-p-7805u-upgrade-e8435.html