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.
I am updating and editing this blog due to issues with Crucial memory. The PC3-10600 memory operating at 1333MHZ triggered the Blue Screen of Death on an infrequent basis. Eventually, I grew tired of this wondering how this would effect my system in the long run. I went shopping at Best Buy to find a manufacturer that sold PC3-10666 memory, the latest JEDEC standard for 1333 MHz DDR3, a different nomenclature then the memory from Crucial. I put the memory Crucial memory in a Toshiba X505-Q890 belonging to my parents; and I have heard no complaints yet; that laptop computer was designed to support 1333MHZ memory. What I read on the PC3-10666 packaging was that the memory was backward supported or compliant if necessary. In other words, the memory could swing between 1066MHz and 1333MHz as needed. I just went back to the Crucial website and the memory support available to the P-7805u FX; I found the information has changed. Crucial has changed the support to Memory Type DDR3 PC3-10600, DDR3 PC3-12800, DDR3 (non-ECC); so PC3-8500 @ 1066MHz is no longer on the list and PC3-12800 has been added. Anyway, I have experienced now only one Blue Screen of Death over the last year or so leading me to believe the Crucial memory was an issue as a match for this laptop computer.
see also http://www.tomshardware.com/s/pc3+10600+pc3+10666+difference
see also http://www.tomshardware.com/forum/288431-30-what-ddr3-1066-8500#4265647
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 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 Needshttp://www.crucial.com/systemscanner/viewscanbyid.aspx?id=961367B231D926C3&AID=10273954&PID=3640576&SID=skim525X832
Computer memory upgrades for Gateway P-7805u FX Edition Laptop/Notebook from Crucial.comhttp://www.crucial.com/store/listparts.aspx?mfr=Gateway&model=P-7805u+FX+Edition&AID=10273954&PID=3640576&SID=skim525X832
2.) Gateway's Memory Qualification for the Gateway P-7805u FX
Gateway Support - P-78 Series Notebook Specificationshttp://support.gateway.com/s/Mobile/2009/PSeries/P-78/P-78sp24.shtml
Gateway Official Site: Gateway® P-7805u FX Editionhttp://www.gateway.com/product_spec.php?product_recid=529668231
3.) Mobile Intel 45 Express Chipset (PM45)
Mobile Intel® PM45 Express Chipsethttp://ark.intel.com/chipset.aspx?familyID=35515
Mobile Intel PM45 Chipset - Overviewhttp://www.intel.com/products/notebo...5-overview.htm
4.) List of Intel Core 2 microprocessors
List of Intel Core 2 microprocessors - Wikipedia, the free encyclopediahttp://en.wikipedia.org/wiki/List_of_Intel_Core_2_microprocessors
5.) Intel® Core™2 Duo Processor P9000 Serieshttp://ark.intel.com/ProductCollection.aspx?series=35572
6.) Intel® Core™2 Duo Processor T9000 Serieshttp://www.overclock.net/newreply.php?do=newreply&noquote=1&p=7168491
7.) Intel® Core™2 Extreme Mobile Processor Familyhttp://ark.intel.com/ProductCollection.aspx?familyId=34520
8.) T9900 vs X9100http://forum.notebookreview.com/gateway-emachines/502821-t9900-vs-x9100.html
9.) New T9900 CPU upgrade on my Gateway p7805u!http://forum.notebookreview.com/gaming-software-graphics-cards/450220-new-t9900-cpu-upgrade-my-gateway-p7805u.html
10.) x9100 test result on p-7805uhttp://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.
12.) Compare Intel® Productshttp://ark.intel.com/compare/36727,37033,40480,35431,39312,37005
I would like to know your thoughts or obtain feedback on 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 (OEM)
8GB DDR3 (non-ECC) PC3-10666 1333MHz RAM
1GB NVIDIA GeForce 9800M GTS
Seagate Momentus ST9320421AS(x2) 500GB(x2)=1TB in RAID 0 (Striped) SATA II (3Gb/s) HDD
Dual Port Micro SD Card MR15 in the internal mini-PCIe port with 2x64GB (non-UHS, Ultra I or II) micro SDXC cards. Note: I have found that Ultra High Specification SD cards are not supported in this system. The host device must support the UHS specification to be UHS compliant.
17" AUO 1440x900
Windows 7 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.Edited by jmsigler2 - 2/5/14 at 1:29pm