Physical memory 4gb - Installed 8gb

M

mhumphri

New Member
When I built my new computer I installed the Vista64 with a full 8gb of ram. Only later did I discover that a patch was needed to access 8gb of ram. I also discovered later that I should have installed the vista64 with 2gb and then later add the 6gb..
Anyway, I've been having BSOD at least once a day.

Today I discovered a Vista screen that says that my installed physical memory is 8gb but the total physical memory is only 4gb. What's with that? Where is the remaining 4gb. Could that be why I'm having problems.

Also today I disabled my video card, sound card, dvd drive, and lan card but I am still getting BSOD.

Do I need to reinstall Vista? I was thinking of pulling out 4-6gb of ram and see how the system does..
Thoughts?
 

My Computer

System One

The first thing I would do is try reseating and rearranging all of the RAM modules.
 

My Computer

System One

  • Manufacturer/Model
    HP tx2000z
    CPU
    AMD Turion 64 X2 TL-68 Gold Edition
    Motherboard
    Quanta 305E/nVidia nForce 430
    Memory
    4096MB DDR2 PC2-5300 @ 5-5-5-15
    Graphics card(s)
    nVidia GeForce Go 6150 64MB
    Sound Card
    Realtek HD Audio/Altec Lansing
    Hard Drives
    250GB 5400RPM SATA
    PSU
    8 Cell Lithium Ion Battery
    Case
    HP Echo tx2000z
Hi mhumprhi,

Do you have the BSOD code by chance? we can lookup the exact cause also a screenshot of that screen you saw would he useful...Im thinking its directly related to your memory as X32 can only address 3gb of physical RAM.

cheers
dmex
 

My Computer

System One

Thanks for your responses. I think I may have the BSOD figured out. Only time will tell. The Gigabyte mother board comes with a utility called GEST (gigabyte Dynamic Energy Saver). The last thing I did yesterday (after all the hardware was disabled) was to un-install this utility. Interestingly I've had no crashes so far. Its never run more than 12 hours without a crash and its been up since yesterday afternoon. I got a little braver and re-enabled the video card and it ran ok for another 4 hours so I added in the on-board lan.

I have Vista 64 installed and have 4 x 2GB ram sticks. All the same. I read something yesterday about needing a remapping utility in the bios to access more than 4gb.. Ever heard of that?? I looked and I didn't see anything like that..
 

My Computer

System One

Yeah most manufacturer motherboard utilities don't work with Vista very well, ASUS is one of the worst...
I have heard of the HWMeMRemap option, You only need it for a 32bit OS running more then 3GB memory and not all motherboard have it since 64bit is readily available these days and can handle way more then 32bit.

dmex
 

My Computer

System One

Hey wild man, about your BIOS.......... with 4 sticks (8Gb's) you have to manually set your CAS timings. Also set it to "unlinked" but more importantly set your clock timing to 2T. With 8 GB's you can't get it all read on 1T lol.

Also, I had to tweak the voltage a little bit on mine to get it running alright. I thought I was great (been about 4 days since a lock up) then last night or the night before, I locked up again. But that is a lock up, not a BSOD. I don't think I've had a BSOD since i set the clock to 2T
 

My Computer

System One

  • CPU
    Intel Core2Quad Q9450
    Motherboard
    nForce 790i Ultra SLI(evga)
    Memory
    8 GB DDR3 1333MHz
    Graphics card(s)
    2 e-GeForce 9800GX2(SLI mode)
    Hard Drives
    WD1500AHFD (Raptor 150 GB 10,000 RPM)
Take a look in msconfig (type it in the start icon) and there's an advanced option in there that can limit the usable ram. You could have ticked it at 4gb.
 

My Computer

System One

I have never heard of a 64-bit patch for accessing RAM over 4GB. I have three workstations with over 4GB running XP x64 SP2 (8GB each) and Vista x64 Ultimate (16GB). I would check to see if you ram is properly seated. I would test each stick one at a time to see if any are bad. I would suggest matching RAM for 8GB. Mismatched RAM can cause issues. Do you need a BIOS rev upgrade to support 8GB? Do you need single sided RAM on your board?
 

My Computer

System One

  • CPU
    pair of Intel E5430 quad core 2.66 GHz Xeons
    Motherboard
    Supermicro X7DWA-N server board
    Memory
    16GB DDR667
    Graphics card(s)
    eVGA 8800 GTS 640 MB video card
    Hard Drives
    SAS RAID
I checked msconfig and the max memory box is unchecked and is greyed out with 0. The number of processor box is unchecked and is greyed out at 1.

Most of the system correctly says there is 8gb of ran installed. The bios is the latest by gigabyte and it already supports the 8gb of DDR2 or 4GB of ddr3.. All my memory is the same by Gskill. All bought at the same time, same model, etc. It supports dual sided ram.
 

My Computer

System One

Does the BIOS see 8GB on POST and in the CMOS screen?

Under control panel - system Does it show 8GB?
Which version of Windows and Service pack are on that screen?

Do you have have ACPI enabled?
Do you have the memory hole enabled?

Does the motherboard rev support the RAM?

I have a Tyan Thunder K8W rev 3.xxx board that does not support dual cores. Only rev 4.xxx does.
 

My Computer

System One

  • CPU
    pair of Intel E5430 quad core 2.66 GHz Xeons
    Motherboard
    Supermicro X7DWA-N server board
    Memory
    16GB DDR667
    Graphics card(s)
    eVGA 8800 GTS 640 MB video card
    Hard Drives
    SAS RAID
Vista64, Gigabyte motherboard using DDR3 RAM, 4 X 2 GB 'sticks' made by GSkill.

Some *specific* hardware specs would help eliminate doubt here but what I wrote above answers some of your questions, Michael.
 

My Computers

System One System Two

  • Operating System
    Windows 10 Pro X64 Insider Preview (Skip Ahead) latest build
    Manufacturer/Model
    The Beast Model V (homebrew)
    CPU
    Intel Core i7 965 EE @ 3.6 GHz
    Motherboard
    eVGA X58 Classified 3 (141-GT-E770-A1)
    Memory
    3 * Mushkin 998981 Redline Enhanced triple channel DDR3 4 GB CL7 DDR3 1600 MHz (PC3-12800)
    Graphics card(s)
    eVGA GeForce GTX 970 SSC ACX 2.0 (04G-P4-3979-KB)
    Sound Card
    Realtek HD Audio (onboard)
    Monitor(s) Displays
    2 * Lenovo LT2323pwA Widescreeen
    Screen Resolution
    2 * 1920 x 1080
    Hard Drives
    SanDisk Ultra SDSSDHII-960G-G25 960 GB SATA III SSD (System) Crucial MX100 CT256MX100SSD1 256GB SATA III SSD (User Tree) 2 * Seagate Barracuda 7200.12 ST31000528AS 1TB 7200 RPM SATA II Mech. HD Seagate ST1500DL001-9VT15L Barracuda 7200.12 1.5 TB S
    PSU
    Thermaltake Black Widow TX TR2 850W 80+ Bronze Semi-Mod ATX
    Case
    ThermalTake Level 10 GT (Black)
    Cooling
    Corsair H100 (CPU, dual 140 mm fans on radiator) + Air (2 *
    Mouse
    Logitech MX Master (shared)
    Keyboard
    Logitech G15 (gen 2)
    Internet Speed
    AT&T Lightspeed Gigabit duplex
  • Operating System
    Sabayon Linux (current, weekly updates, 5.1.x kernel)
    Manufacturer/Model
    Lenovo ThinkPad E545
    CPU
    AMD A6-5350M APU
    Motherboard
    Lenovo
    Memory
    8 GB
    Sound Card
    Conextant 20671 SmartAudio HD
    Monitor(s) Displays
    Lenovo 15" Matte
    Screen Resolution
    1680 * 1050
    Hard Drives
    INTEL Cherryvill 520 Series SSDSC2CW180A 180 GB SSD
    PSU
    Lenovo
    Case
    Lenovo
    Cooling
    Lenovo
    Mouse
    Logitech MX Master (shared) | Synaptics TouchPad
    Keyboard
    Lenovo
    Internet Speed
    AT&T LightSpeed Gigabit Duplex
It could be a conflict with CMOS setting or the spec level of the memory modules. I just bought 8 x 2GB Kingston. I had to make sure the spec of the build was proper for my Supermicro X7DWA-N board. Did you try removing one of them and seeing if 6GB works properly? Did you verify the 8 sides of ram is possible. Some board only go up to 6 sides of ram and require single sided ram. I work with server boards. They are very picky on ram spec.
 

My Computer

System One

  • CPU
    pair of Intel E5430 quad core 2.66 GHz Xeons
    Motherboard
    Supermicro X7DWA-N server board
    Memory
    16GB DDR667
    Graphics card(s)
    eVGA 8800 GTS 640 MB video card
    Hard Drives
    SAS RAID
In your BIOS there is a setting to Remap Memory, that has to be enabled. This allows the system to remap the memory over 4G's because Vista x64 does not handle the addressing correctly over 4G's. You don't have to reset your CAS timings, or any other memory timings here, the default timings of your RAM will work just fine.

dmex is a bit mixed up actually, the Remap feature is only designed to be used on the 64bit systems and should be disabled on a 32bit system. At least that's what my Asus MB's directions point out, and I had to use the memory Remap to get all my RAM going.
He's right on MB utilities working on Vista tho...yikes...that's been fun for allot of MB makers for the first while, they seem t have a better handle on things lately but some still are actually dangerous. The ASUS EZ Flash, BIOS Flash utility has been killing ASUS boards left & right so they now recommend only using the Floppy or command line utility for flashing.
 

My Computer

System One

  • Manufacturer/Model
    Personal Build
    CPU
    Intel E6750 Core 2 Duo
    Motherboard
    Asus Commando MoBo (P965/ICH8R)
    Memory
    4G's Crucial Ballistix Tracer DDR2 PC26400 RAM
    Graphics card(s)
    BFG 8800GTS OC2 320MB
    Sound Card
    Creative Sound Blaster X-FI Platinum FATAL1TY (next)
    Monitor(s) Displays
    2 x 22" w2207 LCD Monitors
    Screen Resolution
    1- 1680 x 1050, 1 - 1920 x 1080
    Hard Drives
    3 x 500G SATA II WD Caviar HDD's
    PSU
    EnerMax NoiseTaker II 600W
    Case
    NZXT Lexa Classic (modified, dual doored & windowed)
    Cooling
    Zalman 9700 CPU cooler, 4-120mm fans, 1-90mm
    Mouse
    Logitech Optical Trackman trackball
    Other Info
    NZXT Lexa Classic Case, Zalman 9700 CPU Cooler, 2 DVD Burners c/w LightScribe (Sony, TSST), Enermax NoiseTaker II 600W PSU with Custom Chrome cable sleeving, Hauppauge HDTV TV Tuner Card, 5.1 Logitech Z5500 speakers, 15 in 1 Multi-card reader
Do what? I have never heard this before. A 64bit OS *should* has no problem access over 4 GB of RAM - in fact, it should be able to access 2^64 bits of RAM....

Very strange that ASUS has this in their boards.

Mind you, not calling you a liar or anything like that - just absolutely astounded that this even holds true. After all, I built machine with the intent of using 8 GB of RAM and Vista 64bit in the first place....
 

My Computers

System One System Two

  • Operating System
    Windows 10 Pro X64 Insider Preview (Skip Ahead) latest build
    Manufacturer/Model
    The Beast Model V (homebrew)
    CPU
    Intel Core i7 965 EE @ 3.6 GHz
    Motherboard
    eVGA X58 Classified 3 (141-GT-E770-A1)
    Memory
    3 * Mushkin 998981 Redline Enhanced triple channel DDR3 4 GB CL7 DDR3 1600 MHz (PC3-12800)
    Graphics card(s)
    eVGA GeForce GTX 970 SSC ACX 2.0 (04G-P4-3979-KB)
    Sound Card
    Realtek HD Audio (onboard)
    Monitor(s) Displays
    2 * Lenovo LT2323pwA Widescreeen
    Screen Resolution
    2 * 1920 x 1080
    Hard Drives
    SanDisk Ultra SDSSDHII-960G-G25 960 GB SATA III SSD (System) Crucial MX100 CT256MX100SSD1 256GB SATA III SSD (User Tree) 2 * Seagate Barracuda 7200.12 ST31000528AS 1TB 7200 RPM SATA II Mech. HD Seagate ST1500DL001-9VT15L Barracuda 7200.12 1.5 TB S
    PSU
    Thermaltake Black Widow TX TR2 850W 80+ Bronze Semi-Mod ATX
    Case
    ThermalTake Level 10 GT (Black)
    Cooling
    Corsair H100 (CPU, dual 140 mm fans on radiator) + Air (2 *
    Mouse
    Logitech MX Master (shared)
    Keyboard
    Logitech G15 (gen 2)
    Internet Speed
    AT&T Lightspeed Gigabit duplex
  • Operating System
    Sabayon Linux (current, weekly updates, 5.1.x kernel)
    Manufacturer/Model
    Lenovo ThinkPad E545
    CPU
    AMD A6-5350M APU
    Motherboard
    Lenovo
    Memory
    8 GB
    Sound Card
    Conextant 20671 SmartAudio HD
    Monitor(s) Displays
    Lenovo 15" Matte
    Screen Resolution
    1680 * 1050
    Hard Drives
    INTEL Cherryvill 520 Series SSDSC2CW180A 180 GB SSD
    PSU
    Lenovo
    Case
    Lenovo
    Cooling
    Lenovo
    Mouse
    Logitech MX Master (shared) | Synaptics TouchPad
    Keyboard
    Lenovo
    Internet Speed
    AT&T LightSpeed Gigabit Duplex
Vista 64bit is well known to have had an issue with handling over 3G's of RAM properly, it was a well hashed over problem for many users at the start of Vista's life. Most people with TV Tuner cards had only Green Screens with anything over 3G's of RAM on Vista 64bit because of the way Vista handled the addressing of the extra RAM.
Yes, you have to have a 64bit OS to address 4G's of RAM or more, but Vista 64bit did NOT start out very well with it and it took until just late last year for the problems to be sorted out (AFAIK).

The memory remap feature in most BIOS's is to allow the remapping of the overlapped PCI memory above the total physical memory and is designed to be used in 64bit systems. Many systems need this to be Enabled for the proper mapping of memory over 4G's.
 

My Computer

System One

  • Manufacturer/Model
    Personal Build
    CPU
    Intel E6750 Core 2 Duo
    Motherboard
    Asus Commando MoBo (P965/ICH8R)
    Memory
    4G's Crucial Ballistix Tracer DDR2 PC26400 RAM
    Graphics card(s)
    BFG 8800GTS OC2 320MB
    Sound Card
    Creative Sound Blaster X-FI Platinum FATAL1TY (next)
    Monitor(s) Displays
    2 x 22" w2207 LCD Monitors
    Screen Resolution
    1- 1680 x 1050, 1 - 1920 x 1080
    Hard Drives
    3 x 500G SATA II WD Caviar HDD's
    PSU
    EnerMax NoiseTaker II 600W
    Case
    NZXT Lexa Classic (modified, dual doored & windowed)
    Cooling
    Zalman 9700 CPU cooler, 4-120mm fans, 1-90mm
    Mouse
    Logitech Optical Trackman trackball
    Other Info
    NZXT Lexa Classic Case, Zalman 9700 CPU Cooler, 2 DVD Burners c/w LightScribe (Sony, TSST), Enermax NoiseTaker II 600W PSU with Custom Chrome cable sleeving, Hauppauge HDTV TV Tuner Card, 5.1 Logitech Z5500 speakers, 15 in 1 Multi-card reader
Thanks for the enlightenment- as I went with OCZ ReaperX series of RAM, I was unable to go with the 8 GB I had originally planned, and once I learn my way through Overclocking, from what I have heard I will get better results having only 2 X 2 GB 'sticks' rather than 4 x 2 GB sticks anyway, for the C2Q 6600 that I have.

Of course, there is also the caveat that this is the first time I am actually running a 64bit OS in the first place - my previous machine was a dinky P4 3.2 GHz Prescott CPU based machine with 3 GB of DDR RAM and all IDE drives :P So it is not surprising that I was unaware of this little factoid.
 

My Computers

System One System Two

  • Operating System
    Windows 10 Pro X64 Insider Preview (Skip Ahead) latest build
    Manufacturer/Model
    The Beast Model V (homebrew)
    CPU
    Intel Core i7 965 EE @ 3.6 GHz
    Motherboard
    eVGA X58 Classified 3 (141-GT-E770-A1)
    Memory
    3 * Mushkin 998981 Redline Enhanced triple channel DDR3 4 GB CL7 DDR3 1600 MHz (PC3-12800)
    Graphics card(s)
    eVGA GeForce GTX 970 SSC ACX 2.0 (04G-P4-3979-KB)
    Sound Card
    Realtek HD Audio (onboard)
    Monitor(s) Displays
    2 * Lenovo LT2323pwA Widescreeen
    Screen Resolution
    2 * 1920 x 1080
    Hard Drives
    SanDisk Ultra SDSSDHII-960G-G25 960 GB SATA III SSD (System) Crucial MX100 CT256MX100SSD1 256GB SATA III SSD (User Tree) 2 * Seagate Barracuda 7200.12 ST31000528AS 1TB 7200 RPM SATA II Mech. HD Seagate ST1500DL001-9VT15L Barracuda 7200.12 1.5 TB S
    PSU
    Thermaltake Black Widow TX TR2 850W 80+ Bronze Semi-Mod ATX
    Case
    ThermalTake Level 10 GT (Black)
    Cooling
    Corsair H100 (CPU, dual 140 mm fans on radiator) + Air (2 *
    Mouse
    Logitech MX Master (shared)
    Keyboard
    Logitech G15 (gen 2)
    Internet Speed
    AT&T Lightspeed Gigabit duplex
  • Operating System
    Sabayon Linux (current, weekly updates, 5.1.x kernel)
    Manufacturer/Model
    Lenovo ThinkPad E545
    CPU
    AMD A6-5350M APU
    Motherboard
    Lenovo
    Memory
    8 GB
    Sound Card
    Conextant 20671 SmartAudio HD
    Monitor(s) Displays
    Lenovo 15" Matte
    Screen Resolution
    1680 * 1050
    Hard Drives
    INTEL Cherryvill 520 Series SSDSC2CW180A 180 GB SSD
    PSU
    Lenovo
    Case
    Lenovo
    Cooling
    Lenovo
    Mouse
    Logitech MX Master (shared) | Synaptics TouchPad
    Keyboard
    Lenovo
    Internet Speed
    AT&T LightSpeed Gigabit Duplex
NP John.
I was unaware of this lil problem in Vista until I went with 64bit and 4G's just late last summer. I immediately ran into problems with my TV tuner card and getting all the RAM to show and be available. The Remap feature allowed Vista to see and use all 4G's but I still had to remove a stick to get my TV tuner working again.
Hauppauge support said that Vista was what the problem was and that MS was having issues with Vista 64bit not handling the mapping of the memory properly and they were waiting fr MS to release a fix. Then a month later I got contacted by Hauppauge again to see if I wanted to test out a new beta Patch for the problem. Of course I did, I've beta tested s'ware for years so I jumped at it, and I haven't had a problem since then.

I remember when I first Googled this issue, I was totally flabbergasted at the amount of people on forums all over having the same problems with Vista 64bit OS and getting all their RAM to show in the system specs and be used properly. I bought 64bit for the same reason as everyone, and here I was reading about problem after problem with the way Vista x64 was handling the memory mapping...I thought for awhile that maybe going 64bit was a bad idea, but it's been smooth since then.
All I know is that for the proper handling of overlapped memory for PCI devices, the Remap feature has to be enabled for some BIOS's to handle this. It may be sorted out by now in newer boards but not mine...
 

My Computer

System One

  • Manufacturer/Model
    Personal Build
    CPU
    Intel E6750 Core 2 Duo
    Motherboard
    Asus Commando MoBo (P965/ICH8R)
    Memory
    4G's Crucial Ballistix Tracer DDR2 PC26400 RAM
    Graphics card(s)
    BFG 8800GTS OC2 320MB
    Sound Card
    Creative Sound Blaster X-FI Platinum FATAL1TY (next)
    Monitor(s) Displays
    2 x 22" w2207 LCD Monitors
    Screen Resolution
    1- 1680 x 1050, 1 - 1920 x 1080
    Hard Drives
    3 x 500G SATA II WD Caviar HDD's
    PSU
    EnerMax NoiseTaker II 600W
    Case
    NZXT Lexa Classic (modified, dual doored & windowed)
    Cooling
    Zalman 9700 CPU cooler, 4-120mm fans, 1-90mm
    Mouse
    Logitech Optical Trackman trackball
    Other Info
    NZXT Lexa Classic Case, Zalman 9700 CPU Cooler, 2 DVD Burners c/w LightScribe (Sony, TSST), Enermax NoiseTaker II 600W PSU with Custom Chrome cable sleeving, Hauppauge HDTV TV Tuner Card, 5.1 Logitech Z5500 speakers, 15 in 1 Multi-card reader
Interesting. And it brings to light another problem I still have yet to figure out - but it may be related. I just recently (~3 weeks ago) built my new machine with the following specs:

  • Core 2 Quad 6600 G0 rev.
  • eVGA 780i motherboard
  • OCZ PC2-8000 ReaperX HPC 4GB Edition (2 X 2GB) RAM
  • eVGA 8800 GTS KO 512MB GA
  • Dual 500 GB 32MB Cache Seagate Barracuda SATA II HDs
  • WD 250 GB 8 MB Cache HD
  • ThermalTake Armour Case - with 250 mm side fan

All the specs in my WEI are 5.9 *except* the RAM - it is at 5.4. And CPU-Z reports that the RAM is PC6400 not PC2 8000 like it should....so, I wonder if there is something I should be looking at in terms of getting the RAM to play much more nicely with Vista 64bit....

And this is without any over clocking....

Oh, and I also put a Hauppage WinTV PCI-e tuner card in - but I had no issues at all - works like a charm.
 

My Computers

System One System Two

  • Operating System
    Windows 10 Pro X64 Insider Preview (Skip Ahead) latest build
    Manufacturer/Model
    The Beast Model V (homebrew)
    CPU
    Intel Core i7 965 EE @ 3.6 GHz
    Motherboard
    eVGA X58 Classified 3 (141-GT-E770-A1)
    Memory
    3 * Mushkin 998981 Redline Enhanced triple channel DDR3 4 GB CL7 DDR3 1600 MHz (PC3-12800)
    Graphics card(s)
    eVGA GeForce GTX 970 SSC ACX 2.0 (04G-P4-3979-KB)
    Sound Card
    Realtek HD Audio (onboard)
    Monitor(s) Displays
    2 * Lenovo LT2323pwA Widescreeen
    Screen Resolution
    2 * 1920 x 1080
    Hard Drives
    SanDisk Ultra SDSSDHII-960G-G25 960 GB SATA III SSD (System) Crucial MX100 CT256MX100SSD1 256GB SATA III SSD (User Tree) 2 * Seagate Barracuda 7200.12 ST31000528AS 1TB 7200 RPM SATA II Mech. HD Seagate ST1500DL001-9VT15L Barracuda 7200.12 1.5 TB S
    PSU
    Thermaltake Black Widow TX TR2 850W 80+ Bronze Semi-Mod ATX
    Case
    ThermalTake Level 10 GT (Black)
    Cooling
    Corsair H100 (CPU, dual 140 mm fans on radiator) + Air (2 *
    Mouse
    Logitech MX Master (shared)
    Keyboard
    Logitech G15 (gen 2)
    Internet Speed
    AT&T Lightspeed Gigabit duplex
  • Operating System
    Sabayon Linux (current, weekly updates, 5.1.x kernel)
    Manufacturer/Model
    Lenovo ThinkPad E545
    CPU
    AMD A6-5350M APU
    Motherboard
    Lenovo
    Memory
    8 GB
    Sound Card
    Conextant 20671 SmartAudio HD
    Monitor(s) Displays
    Lenovo 15" Matte
    Screen Resolution
    1680 * 1050
    Hard Drives
    INTEL Cherryvill 520 Series SSDSC2CW180A 180 GB SSD
    PSU
    Lenovo
    Case
    Lenovo
    Cooling
    Lenovo
    Mouse
    Logitech MX Master (shared) | Synaptics TouchPad
    Keyboard
    Lenovo
    Internet Speed
    AT&T LightSpeed Gigabit Duplex
I have not heard of issues on XP x64 or Vista x64 about RAM over 4GB. I do know overclocking on any 64-bit is not as good as 32-bit OS.

I have three workstations with server boards running over 4GB. My Tyan Thunder K8W rev 3 is running 6GB and pair of AMD 265 dual core Opterons. My Tyan Thunder K8WE rev 4 is running 8GB and pair of AMD 280 dual core Opterons. My Supermicro X7DWA-N is running pair of Intel quad core E5430 Xeons with 16GB of RAM. The K8W can't see 8GB because the revision of the board does not support dual cores fully. I can't enable the memory hole on it. I can go back to single core Opterons to get 8GB. I rather have the four cores instead.

The problem is more likely how computer boards are setup. You don't want to overclock on your base OS install. You want to make sure the CMOS is configured properly to support your hardware.
 

My Computer

System One

  • CPU
    pair of Intel E5430 quad core 2.66 GHz Xeons
    Motherboard
    Supermicro X7DWA-N server board
    Memory
    16GB DDR667
    Graphics card(s)
    eVGA 8800 GTS 640 MB video card
    Hard Drives
    SAS RAID
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