XP1600 K7S5A mobo, can reach 147 using cpufsb, but can't boot WXP using bios at 150

[smitts]

I have an XP 1600+, ECS K7S5A mobo, 512 MB PC133 SDRAM. I ran cpufsb earlier today at 147 mhz FSB, for an 1530mhz processor speed. I ran the Prime95 test for 4 1/2 hours and was perfectly stable. I then updated my bios to allow myself the 150 mhz processor speed available for this board, but I cannot boot into windows. I get a blue screen (WINXP) after the boot up screen for XP.

I'm kind of new at this, and don't know a whole lot. I would like to stay away from changing my voltage.

I can boot into windows at 136 (I think) fsb, and that is what I am running now. The next step on my mobo is to 150, nothing in between.

My idle cpu temp is 47C, during prime it maxed at 55C. I have two case sensors, one 32C and one 36C. I am using the retain HS and Fan.

Any help would be appreciated. Thanks

[eh?]

you might wanna lower those temps some. they are pretty high

[cjlax5]

ya, lower temps, and to go that high you are probably going to have to raise the voltage. Raising the voltage isnt that big of a deal, it will just raise your temps, which is why you need better cooling.

[smitts]

the heat problem is most likely due to to the corner of the room that it is placed in. It's kind of sorrounded, walls on side and back, and a closet towards the front and my 21" monitor besides it. Unfortunately in the dorm room I'm in, that's about all I can do. I have a case fan on the side of my case, and have one for the front, just haven't installed it yet. Might make a slight difference.

[smitts]

the reason I didn't want to change the voltage is that the mobo doesn't support the change, I'd have to do the connecting the pins on the chip to change it, and I'm not sure I want to do that

[Fiz]

There are two options, modify the bridges to adjust the voltage, or get a better cooler. Looking at the temps I would say that you should get a better cooler either way. If you want to "guarantee" stability, you are going to have to modify the bridges. At 1.85 Vcore I could get a boot into and run win2k but any stress would crash it (I also have a1600+), I had to do a Vmod to get it stable. But first things first, you need to get a new hsf before anything you need a new hsf, 55'C is high, I am guessing that you are going by the in socket thermistor, which are usually 10'C off, so you may be as high as 65'C! I would suggest an Alpha or GlobalWin. Also, look into case cooling, that makes a huge diff in temps. Once you do that, you can start thinking about raising Vcore and stuff. I hope this helps a little, good luck.

Fiz

[Erick]

If you haven't done this already you need to remove the heatsink on the chipset it is attached with double sided tape which we all know is horribe for heat transfer. At that bus speed you are just cooking the chipset. Just reattach the heat sink with some thermal epoxy or better yet get a heatsink with a fan that certianly wouldn't hurt.

[smitts]

you mean the white stuff that was on the bottom of the HS when it came? That stuff is no good? Please tell me what you would recommend.

By the way, I did get it to boot into windows. Haven't gotten to take a look at the stability yet though. I disabled the onboard LAN, and hooked up my 3com card, and it booted perfectly. :)

I did this today just because I was kind of bored. I don't really need the speed, I just wanted to fool around with it, so I told myself I wouldn't spend money on it. I think I can afford some grease though, Arctic Silver? So I don't think I'll be buying a new HS or fan, unless I find something at an incredible bargain.

Is it bad for my chip to be running at those temps?

[smitts]

I also inserted a fan in the front of the case blowing inward. I have a fan on the side blowing outward and the power supply blowing out. Would another fan in the back help?

[smitts]

picked up a alpha 4085, 4 panaflow high output fans, (1 for cpu, 3 for case) and some ASIII.

I'm hoping for a rather drastic drop in my temps