Asrock 939Dual sata problem

[thebroccoli]

ok so im still learnin about hardware etc. I just bought an AMD 64 4000, and the 939dual sata motherboard. I have 2 sticks of Geil(i believe) 512 and 3200(they arent the same tho, 1 is like dragon something.) Anyway, ive read that running dual channel with 2 non exact sticks can not work as well. My problem is that when i use Si Sandra itll always tell me that the mem is running at some lower speed, (not at 2x200 at which i think they should be). So i make the mem run at 2x200 in bios, but i get a crash in windows about 20 seconds in, sometimes a program does then it just reboots(no shutdown) but it always ends up rebooting.

thats 1st problem, 2nd i dunno if its related, but again using sandra(not sure if its exact or very reliable) but my FSB is running at 800 instead of 1000 i thought it was supposed to be.

any help would be appreciated and good for your soul.... just like crabby patties.

 

[cubby1223]

1) set hypertransport to 1000, it supports it
2) set dual channel to be disabled in the bios, you can't run it with what memory you've got
3) set memory clock to 200mhz & timings to spd

 

[professor1942]

I'm not sure if the BIOS has a specific option to disable dual channel (I don't remember seeing one), but moving one stick into a different slot should do the trick.

Also, set command to 2T (it probably is already by default, but to be sure) and set CAS latency to 3 if it's on 2.5

 

[thebroccoli]

i dont see an option to set hyperstransport to 1000, in those words at least. The only thing thatll do 1000 is both CPU NB link speed (200 400 600 800 1000) and NB SB link speed (same speed options).

didnt see an option to disable dual channel also, but i moved a stick, also are there any other settings for the mem i should worry about aside from 2T and cas latency.

 

[professor1942]

Yep CPU-NB link speed is the same as HTT. If you're overclocking at all, you need to reduce this number to 800 (or 600 for FSB greater than 250).

Don't worry about the NB-SB link speed setting (leave it at default).

There is also Ras to Cas delay (set to 4 for now), Ras Precharge (same thing) and Cyle time (8 is usually good)... CPU-z will tell you what settings you have so you know if you've done it right.

Also, make a bootable CD of memtest86+ (http://www.memtest.org/) and always run through the complete memory test (8 tests total) when you change your settings so you don't corrupt your Windows.

 

[thebroccoli]

did as suggested, (tho cas 3 made me reset bios). ran memtest from CD and it passed the 8 or 9 tests with no errors. Got into windows and after bout 10 mins it resets still. *rips hair out*

 

[thebroccoli]

any change in memory settings seem to just auto reboot my computer after 10 mins or so, could it be something else? if i keep my mem settings set to auto, it works ok.

 

[BadThad]

Try running just one ram module at a time. They may not be playing nice together.

What kind of power supply do you have?

 

[thebroccoli]

antec 460w i believe.