Ga-ma790xt-ud4p + pdc34g1333llk

[artdrivers]

Have you raised the CPU NB VID Control? This is a voltage adjustment for the CPU's memory controller.
If you do not find the settings you want in the Main Menu or a submenu, press Ctrl+F1 to access more advanced options. This must be done when you first enter bios on the main menu. After you you press Ctrl+F1 you can navigate to Advanced options and make more adjustments.

MB Intelligent Tweaker(M.I.T.)
 Advanced Clock Calibratioin [Press Enter]
CPU Clock Ratio [Auto] 2800Mhz
CPU NorthBridge Freq. [Auto] 2000Mhz
CPU Host Clock Control [Auto]
x CPU Frequency (MHz) 200
PCIE Clock (MHz) [Auto]
HT Link Width [Auto]
HT Link Frequency [Auto]
Set Memory Clock [Auto]
x Memory Clock x6.66 1333Mhz
 DRAM Configuration [Press Enter]
******** System Voltage Optimized ********
System Voltage Control [Manual]
x DDR3 Voltage Control Normal
x NorthBridge Volt Control Normal
x SouthBridge Volt Control Normal
x CPU NB VID Control +.02
x CPU Voltage Control Normal
Normal CPU Vcore 1.2500V

[inforcer]

my default bios :

Advance Clock Configuration [Press Enter]
CPU Clock Ratio [Auto] 3200Mhz
CPU NorthBridge Freq. [Auto] 2000Mhz
CPU Host Clock Control [Auto] 
x CPU Frequency (Mhz) 200
PCIE Clock (Mhz) [Auto]
HT Link Width [Auto]
HT Link Frequency [Auto] 2000Mhz
Set Memory Clock [Auto]
x Memory Clock x5.33 1066Mhz
DRAM Configuration [Press Enter] -> go to (1)
***System Voltage Optimized***
System Voltage Control [Auto]
x DDR3 Voltage Control [Normal]
x NorthBridge Volt Control [Normal]
x SouthBridge Volt Control [Normal]
x CPU NB VID Control [Normal]
x CPU Voltage Control [Normal]
Normal CPU Vcore 1.3500V

how much should i raise the CPU NB VID Control ? trial and error ?
what's the save limit ? ( we don't wanna break anything )

and what about cpu vcore ? should i raise that too ?

[artdrivers]

The CPU NB VID Control is for adjusting voltage for that 144 bit memory controller. If I am not mistaken yours works at 1066Mhz but fails at 1333Mhz correct? It is a hit or miss type of thing but you will not damage the cpu by raising the CPU NB VID Control +0.1 or +0.2 volts. I use a windows program to adjust mine now PhenomMsrTweaker: Cool & Quiet customized and have raised it to +0.25. It only helped mine. PhenomMsrTweaker: Cool & Quiet customized, but you may need to set yours up in Bios because the program only works in Windows. You will need to set the DDR3 Voltage control to the mfc's voltage specifications if you set it to 1333Mhz. I would leave the timings on auto until you test the memory. You should use Memtest86+v2.11 to test your RAM. Memtest86+ - Advanced Memory Diagnostic Tool
Here is a good url to save to favorites, with alot of good downloadable programs.
Latest Overclocking Programs, System Info, Benchmarking, & Stability Tools
I hope this helps.

[inforcer]

memory settings are 7-7-7-20, 1333Mhz, 1.7v. everything else is default/auto. (settings writen in the box)

i've tried raising the CPU NB VID Control to +0.1, 0.2, 0.25, 0.3. even 0.35... still no go in dual channel mode (slot 3&4), can't even go to the bios screen.

to get to the bios screen again, i had to remove 1 stick, or replace the sticks in single channel mode (slot 1&3).

i haven't tried PhenomMsrTweaker yet, will do if i have enough time to play around with my rig ^^

[artdrivers]

PhenomMsrTweaker wont help with your issues. You will want to try different parts, memory, cpu, motherboard, power supply, ect....

[inforcer]

i'm still stuck with single channel, it's the only working solution now.

any help/advice is still welcome

[artdrivers]

Hi Inforcer. Is it possible that the 2 memory modules are not the same? I know that sometimes the memory can get misslabled. You may want to check it with memset 4.0 just to see if it is identical. Tweakers.fr

[inforcer]

just got a reply from the manufaturer :

Please Note for users with any AM3 system, we advise using any Gamer series ending with an 'A.' ---> PGS...A.
Gamer Series-A lines are designed and tested to run on AM3 platforms utilizing AMD's OverDrive software.

The following lines are tested and designed to work with AM3 platforms:
PGS34G1600LLKA
1600 7-7-7-20 1.7v

PGS34G1600ELKA
1600 9-9-9-24 1.8v

PGS34G1333LLKA
1333 7-7-7-20 1.7v

PGS34G1333ELKA
1333 9-9-9-24 1.5v

Furthermore, any non Gamer series A line DO NOT work with AMD's OverDrive utility and may not work on AM3 platforms at advertised specs. Thank You for choosing Patriot Memory.

when is this posted ? 10-26-2009, 07:35 PM... that's a month after i purchase it >.<

[artdrivers]

OH! Patriot does not support that motherboard. Sorry to see you are having these troubles.
Patriot Memory - Configurator

GA-MA790XT-UD4P
This product is currently unavailable. Please contact our support staff at support for information regarding this product.
System Memory Configuration
Memory Information:
Two DDR channels DDR3 SDRAM PC3-8500
Memory Configuration
STD
MAX
0 MB 16384 MB
Slot Configuration
Memory Expansion
4
CPU Information
Chipset
AMD 790X, 2600 FSB, ATX

If the manufacturer or model is not listed above, please check back at a later time as devices and models are added weekly. Or you can contact us at support@patriotmem.com for more support information.

[inforcer]

the store where i bought the patriot lets me upgrade the pariot kit into a ocz kit. it's a 4GB (2x2048MB) D/C Kit PN - OCZ3G1333LVAM4GK (PC3-10666 Gold AMD Edition Low Voltage).
OCZ Technology | Products | Memory | OCZ PC3-10666 Gold AMD Edition Low Voltage

the first kit was a total failure, BSOD's on each sticks
then the shop kindly gave me a replacement, and the second kit works fine, so far

i tested each of the replacement stick by running a video that lasted 30 minutes (anime, macross frontier, last episode, HiRes-HQ-mkv :P), everything seems to be ok. the first kit, gave me BSOD before the video ends.

i've been browsing, playing Perfect World (MMORPG) high settings, 3dmark2006. no BSOD so far. so i guess the replacement stick are ok

i also run Window 7's "Windows Memory Diagnostic" on each stick, and no error is reported.

================================================== =======

the problem :

like the previous patriot kit (PDC34G1333LLK), i can't get this kit to work on dual channel. single channel is fine for 1 stick (slot 1 or slot 3) or both stick (slot 1&2 or slot 3&4).

so now i'm confused

somebody help me...