bigsinky

when my pc is booting is tells me the memory is only single channel. does the asus A7N8X-X board support dual channel and if so how do i enable it. i have 2 x 512 pc2700 memory (TwinMOS). are there restrictions on how much memory you can have on a board. ie 3x1GB if memory is pc2100 or pc2700 but only 2x1GB if pc3200 and only 1x1GB if pc3500 and pc4000.

cheers

sinky

Jye

Thought I already told you this

One stick in slot one, empty slot 2, one stick in slot 3.

GL.

bigsinky

tried that already and computer refused to boot

bigsinky

also what about the decreasing size of memory as in my initial post. any truth in that?

cheers

sinky

Jye

Youve prob mucked something up in the bios. I'd reset everything to bios defaults and try again. Your twinmos, are they two identically sized and speed rated sticks? For dual chan mode the two sticks need to be 'exactly' the same.

bigsinky

the stick ar both 512 meg strips of pc2700. they where bought at the same time so i assume they are identical. i have now put 1 strip in DIMM1 and another in DIMM3 but on power up it still says single channel. do i need to change something in bios?

cheers

sinky

edited to say strips are identical

[Edited by bigsinky - 7/27/2003 12:29:50 PM]

Jye

The PC rating of PC ram denotes bandwidth, i.e 3200 GB/sec data transfer, which in dual chanel mode would give a theoretical 6400 GB/Sec. You wont ever get that anyway as the AMD chips dont know what to do with all that speed PC 3200 is also known (slightly simplified) as DDR400 as it can run at 200 Mhz fsb which with DDR (double data rate) gives you the 400 MHz.

I run two identical 256 meg sticks of OCZ PC 3500 EL. I have a Barton 2800, My multiplier is 11 with a 215 Mhz fsb. It will run at 12 X 210 - 215 as well with 1.8v's. I also run the memory at 2.8v's. Cas 2, 2- 2- 2- 6.

You talked about locking the fsb, I think you mean that this momo (like all decent Nforces I think) locks the PCI bus, which it does. All you have to worry about is getting the fsb up in small increments until you max it, you could uses extra voltage to get more stability, its up to you whether you like reseting the bios now and again

[Edited by Jye - 7/27/2003 12:33:03 PM]

Jye

Remember as well, PC 2700 is only good for 166 Mhz fsb, unless its **** hot ram, which twinmos aint, you'll be luck to get a stable 180'ish if your lucky. Doubt I'd bother mucking about with this ram tbo.

Jye

I'm also using watercooling and Shin-Etsu thermal paste on everything.

[Edited by Jye - 7/27/2003 12:35:30 PM]

bigsinky

jye

seems to be running stable @12.5 x175 fsb. still in single channel mode tho. i dont know if dabs will have matched the pair of strips. i ordered 2 strips and that what they sent me. i am assuming that they are identical, maybe i am wrong. might have to invest in some corsair stuff in the near future (like today) any point in forking out for real good stuff like xms4000 or will 3500,3700 do the job?

brain picking time nearly over m8

cheers

sinky

bigsinky

ordered some corsair 2 x 256meg pc3700 from overclockers.co.uk. cheaper than dabs and only 2.85 p+p to Northern Ireland

cheers

sinky

Jye