AXIA0111 only does 1333 so far

[Duck Hook]

I put in my new KT7A and AXIA0111(Y) 1ghz last night. I was pretty fortunate putting everything in cause I just swapped out the old mobo and CPU, put in the new one and had no problems starting it right up.

Being that this is a B chip w/ a default of 10x100, I did not unlock the chip. The computer started up fine, I went into the bios, changed to 133FSB and ran at 1333 just fine. I had a few lock ups in Windows and bumped the voltage to 1.775v, and then finally got it stable with no lock ups at 1.8v.

Next I wanted try and get 1400 so I went back into the bios and increased the FSB +7, it wouldn't boot, no post, no nothing. I couldn't reset so I had to pull the plug, reset CMOS, and then restart. I tried moving the FSB down all the way to +2 which would have given me 1350 (10x135) and it still wouldn't boot (I did not try only +1.) Each time I had to pull the plug, reset CMOS, and restart.

I'm pretty sure heat is not a problem. I'm using a Alpa PAL6035 and the systems at 1333 runs at 118F-120F under full load, I think that is equivalent to about 48C. Idle temps were in the mid 90Fs, with system temp at about 84F.

I've got an Enermax 330w PS, and Crucial 7E CAS2 memory, so a 140FSB should not be a problem for the memory, and the 135FSB should certainly have booted.

I have not tried unlocking the chip to see if moving up the multiplier would help, I'll try this tonight. But the fact that I did not unlock the chip should not affect the ability of the chip to run at a higher FSB setting right? I am really mystified why the computer would not even post at anything but a default FSB.

After reading all the good stuff about AXIAs, I was really expecting 1400 easy so I am a bit disappointed but maybe I should just be happy that I've got it running 100% stable at 1333 @1.8v and with reasonable CPU temps.

I let it run for about 10 hours last night bumping the voltage up to 1.85v, leaving it on while I went to sleep, running a practice session in Nascar Heat. I checked the temps and they were running about 120F. When I got up this morning, the cars were still running around the track so it's pretty stable and temps were still around 120F. That was kind of my burn-in exercise.

Anybody have any ideas why the computer won't post at anything above 133FSB? Will unlocking the CPU have any effect on this?

Thanks in advance.

P.S. my old KT7 TB1000 did 1100 stable at 1.75v so maybe that's why I feel cheated. I'm not getting that much more out of the new stuff. At least my IBM 75GXP now has ATA100 support. And my mom will now have a TB1000 to type her recipes on.

[Hoot]

I am also using a KT7A and 1.0G AXIA. I never use the +function. I just select the FSB from the list in the bios. IE 136, 140, 145, 150, etc, though I believe the function to be identical. I do know that the temp my cpu is running at effects how high I can set the FSB for a given core voltage. If my temps go above 30C, I can not hold 10x150 reliably. If it goes above 37C, I can not hold 10x145 reliably and if it goes above 40C, I can not hold 10x140 reliably. That's why I have a good HSF and just finished modding my case for 92mm vs the original 80mm fans. Memory speed is a factor also. That is why I went with memory certified at PC150 CAS2. Lastly, a good stiff PSU (400w).

Hoot

[Yomama]

Your temps are little high, may be you can improve your case cooling.

The fact that it needs 1.8V @ 1333 is indicative of the fact that this CPU may not like to go much higher. But heat may have to do with that. Regardless, it should at least boot at 135 or 137...

How many sticks of RAM are you using? If possible use just one stick initially, and reduce CAS to 3.

Good luck

Yo

[ken257]

Try running with the case sides off. If your temps go down you need to add some case cooling. Not all cpu's are created equal. I have a AXIA TBird 1.2 on a KT7A-R running at 1440 with ambient temp water cooling. Normally it idles at mid 70's and hits mid 80's under full load (these temps are F not C). We just had a very hot week where I live and my comp room got quite hot, as soon as the cpu temp hit 95F I started to have stability problems and had to clock it down to 1.33 The point here is even if you get your temps to where they look good an overclocked cpu can be more heat sensitive then one running at stock speed.

[Angry]

Yomama is right, your athlon shouldnt need that much voltage at such a low speed..my tbird ony requires 1.80 if i have it set anything above 1.4,, but like right now im running at 1.38 thats 1.70, why i have to make a big jump in voltage from that to anything above 1.4 Im not sure but it makes my sys stable plus my temps never go above 39c or at the most 40, and thats with a super orb moded so try select like 145 and 150, and it seems your memry brand is pretty good...I would like to know what mine is...its pc100 doing 150...dont ask me how either