8GB DDR21066 RAM Errors Out

[faint545]

I have a Gigabyte MA790X-UD4P motherboard and I just bought 8GB of G.Skill RAM. Everything in BIOS regarding the RAM was on auto which put the RAM @ DDR2800 so I changed the memory voltage to 2.3 and set the clock speed to x5.33 which put it at 1066 and corrected the timings to 5-5-5-15.

 

I then put it into Memtest86 and less than a minute in, errors are coming up constantly. So then I tested the RAM sticks in pairs and both pairs came out ok individually. Also, I don't get any errors when in DDR2800. Is there something I'm doing wrong or should I return it and get a different brand. I was looking @ getting these: OCZ Blade

[nVidia_Freak]

You should be running at 2.1v. There's no reason to go over that unless you're overclocking it and you hit a wall.

[Zertz]

You should be running at 2.1v. There's no reason to go over that unless you're overclocking it and you hit a wall.

 

That and although I'm not an AMD expert, the processor's memory controller is most likely struggling running so much RAM that fast.

[Boinker]

May either be the chip that cannot handle the amount f memory or it may be the second channel in your board IMHO. Check and see if there is a bios update for the board, That may help. But if you can Handle using just 4 then You could likely get by with that.

 

EDIT: BTW, Please Post your system specifications in you sig or post them please. It Help's people alot when Diagnosing the issue.

Edited August 23, 2009 by boinker

[faint545]

I did try setting the voltage at 2.1 and it didn't change anything. I will however try updating the BIOS before I return them.

[dr_bowtie]

AHHHH...where o where have I seen this thread before....???

 

if it works at ddr800 then run with that...that is if you need 8gb of ram...

 

should be fine....lol

[raisethe3]

AM2+ CPU only supports 2 sticks of 1066. If you put in 4, it will revert to 800mhz stick each. Like someone pointed out before, its the CPU limitation.

[zedsed420]

I am running a similar config, msi dka790gx, amd 955 phenom 2 x4 @3.2 ghz, 8g G.Skill 1066 ddr2, 2 xfx radeon 4870 in crossfire, 850w rosewill psu 80 plus certified. All individual parts check out but the ram is at 800 mhz dual channel. I thought that limitation was not affecting the phenom 2 procs and my board says its 1066 compatible out of the box. already flashed the bios to version 1.8 (latest version) and I'm running windows 7 x64. Also no overclocking has been performed on this machine yet. Everything is still at the stock settings. Any help would be appreciated.

Edited September 5, 2009 by zedsed420

[ccokeman]

Before sending them back you can try increasing the voltage to the IMC or HT bus I would think. Been a long while since I worked on an AMD system

[Waco]

Throwing money at fast RAM is a good way to waste it.

 

Run them at 800 MHz and forget about it.