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Hello everyone. Just built my new system with an Epox 9NDA3+ and Winchester 3000+. Love the board so far, nice BIOS, and stable, BUT, while trying to max out my overclock, I'm at an interesting point. (system is in the signature) When I got to 250FSB, with the mem divider at 166, so the RAM was really running about at default. In order to rule out the RAM as the limiting factor in determining my chip's max, I tried to lower the RAM divider to 133. As soon as I did this, the BIOS took 4 times longer to come up, then loaded Epox's 'safe mode' to allow me to get in and change the settings...it won't continue past POST.
What's odd is that the machine runs fine, at the HIGHER mem frequency beyond that. I'm currently testing (don't know if it's failed since I'm at work) my system at 260FSB (3x HTT multi), and it passed the Prime 95 torture test for 12 hours at 255FSB, with the divider at 166 (208 effective memory clock).
After screwing around with it, I found out that the 133 divider works just fine up until 245 FSB...then it fails. Beyond 245, the machine is fine, as long as it's running at the 166 or 100 lock, but not at 133, which is what I really need to push it further. At stock voltages, divider at 100, I was able to boot at 2446, but then it crashed (I didn't try to increase Vcore at that time), but I am pretty sure I can hit at least 2400 stable, if not 2500 with a voltage bump, if I can get the mem divider to 133. I really don't want to run the memory at 135MHz, and I think it will likely top out here at the 5/6 ratio pretty quickly (if it even passes at 260, which I'll find out in 2 hours).
Any ideas what could be causing this?
What's odd is that the machine runs fine, at the HIGHER mem frequency beyond that. I'm currently testing (don't know if it's failed since I'm at work) my system at 260FSB (3x HTT multi), and it passed the Prime 95 torture test for 12 hours at 255FSB, with the divider at 166 (208 effective memory clock).
After screwing around with it, I found out that the 133 divider works just fine up until 245 FSB...then it fails. Beyond 245, the machine is fine, as long as it's running at the 166 or 100 lock, but not at 133, which is what I really need to push it further. At stock voltages, divider at 100, I was able to boot at 2446, but then it crashed (I didn't try to increase Vcore at that time), but I am pretty sure I can hit at least 2400 stable, if not 2500 with a voltage bump, if I can get the mem divider to 133. I really don't want to run the memory at 135MHz, and I think it will likely top out here at the 5/6 ratio pretty quickly (if it even passes at 260, which I'll find out in 2 hours).
Any ideas what could be causing this?
