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ABIT IX38QuadGT mobo and Twin2x4096-8500C5DF G


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I have an ABIT IX38QuadGT mobo and I'm running Vista Ultimate 64Bit.

According CPU-Z memory is running at 399-400Mhz at max bandwidth of PC2-6400 (400Mhz). Shouldn't it be 533?

I manually set timings of 5-5-5-15 2t at 2.1v. All other settings auto for RAM.

Did I miss something?


Thanks in advance.




Ok read another post about loading defaults the changing timings. Load defaults then changed settings (did not reboot in between). THEN:

Save and exit.

Memory testing....2,0xx,xxx OK self restarts.

Memory testing....2,0xx,xxx OK self restarts.

Memory testing....2,0xx,xxx OK, I press ESC to skip, restarts.

Have to Ctrl-Alt-Del, restarts.

Memory testing....2,0xx,xxx OK self restarts. I let it do this 4 times.

Then enter setup (pressed Del) load optimized settings. RAM ettings all Auto. Whichare: 5, 5, 5, 18, 2T.

Boots into safe mode selection screen. I choose normal boot.

CPU-Z shows memory is running at 408Mhz at max bandwidth of PC2-6400 (400Mhz).



The other post also talks about lowering RAM speed to 800 how do I do that?

More importanly why would I want that? Shouldn't I have just kept my TWIN2X4096-6400C5DHX?

As you can tell I am noob at this stuff but I thought since DDR2 800 runs at 400 and DDR2 1066 runs at 533 (suppossedly). Why would I want to "slow" it (1066) down to 800 when I just spent more cash to get 1066?

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Sorry for taking so long been busy with work.


Part # CM2x2048-8500C5D. 2 sticks of RAM.


Proc info:

Intel Core 2 Duo E6850 Conroe 3.0GHz 4M shared L2 Cache LGA 775 65W Dual-Core Processor. 1333Mhz FSB.


I originally had the default bios settings. Then changed the timings to 5-5-5-15- @2.1v. This is when I ran into problems.

I then followed your suggestion to loads defaults then change timings again. Again problems listed in above post.


So between my post and your reply, I then changed the speed of the ram in the bios to 510. This was the closest to to 533 as I could get without changing anything else to do with O/Cing my CPU.

All other settings are the defaults.


Thanks in advance for all your help.

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