Abit IS7 w/ dual channel memory

[tgxiii]

Anyone out there own an Abit IS7? I was checking a pair of Mushkin Basic 256MB PC2700 memory the other day and they wouldn't operate on dual channel.

They are the same capacity and same rating. I put them in slots 1 and 3 and later tried them in slots 2 and 4 and they still would not work. When I turn the comp on, I hear one POST beep, but then the system just hangs. All the screen shows is my CPU frequency and type.

When I try installing the memory one at a time or if I put them in non-dual channel slots (1+2, 1+4, 2+3) the computer boots up as normal and Windows loads.

All the manual tells me to do is install the matching pairs in slots 1 and 3 or 2 and 4 for dual channel to work. What could be the problem?

[BipolarBill]

Link us to the manual please.

[tgxiii]

http://www.abit-usa.com/products/mb/manual.php?categories=1&model=79

I actually didn't look at the online manual and just checked the one that came with my mobo.

[tgxiii]

FYI, the part about the memory is on page 25 on the PDF file in the link above.

[BipolarBill]

Have you tried updating the BIOS?

[tgxiii]

Yeah, it's at its latest version.

[BipolarBill]

I would assume that the motherboard is defective because it's supposed to be as simple as plugging in the memory.

[Bat25]

Not all boards work with certain types of mem. If you have a local Fry's try Corsair XMS or Kinston Hyper X. If it works - keep the board - RMA the mushkin.


If it boots normal with one stick then try manually setting the ratio to 4:4 and use cas 2.5 and 2T, relaxed timings - raise DDR volts one notch. See if it boots.