I feel like an idiot :)

[Himself]

I mentioned here about my buying a chaintech 7aJA and Duron 600, well, the version I got didn't have cpu multipliers, or the second bios, apparently they only go to special people like reviewers who give them the thumbs up. I asked them about it, and they said it was only an option on boards with the 686b southbridge, you know those using a chip that is scarse as hen's teeth. Anyway, I did up my own dip block and wired that up to the board and I have cpu multipliers the hard way. Should have checked the board with the place selling it before I bought it, mail order deal. Also had to unlock the chip itself, I'd advise using conductive ink instead of a pencil.

Anyway, the stupid part is this, it seems I have been using my Duron 600@750MHz with a bit of plastic between the heatsink and the core! I got rid of it and the temp dropped 10 degrees celcius. Bah! Stupid instructions, remove the peel and insert, should be remove the peel, and when that doesn't work, remove the bit of plastic that is supposed to come off with it. I had square bit of plastic with the heatsink tape squeezed out around the edges, duh! I munged the goop together and it is now being pressed flat by the heatsink, so far, so good.

Running at 800MHz now, 1.72V, (37 degrees celcius, was 52), may try to go higher later.

[Helevitia]

hehe, don't feel bad, I did the same thing. It wouldn't happen to be a ORB would it?

Dave

[Himself]

Yep

[DentyCracker]

Running at 850. 1.66 V. Seems stable enuf. Ambient temp is 28 deg Celsius, CPU temp 46 deg. Celsius, with setiathome running (Win2k)

[Himself]

I can get as far as windows trying to boot at 900, but then she locks up, 850 is the same. I think I need more core voltage, but my mb adds a bit of voltage to the default, all L1 bridges connected gives me 1.95V. I bascially have an option of 1.68, 1.72, 1.89 and 1.95. 1.89 locks up no matter what, 1.85 would require that the .1 V bridge be cut and that's impossible for me. Looked at the motherboard traces but couldn't find any locations for voltage. I could also replace the termal tape with paste, but from what I hear the tape used is a good conductor when used right, and the thermal paste around these parts is rather generic.

Don't really need more MHz, I am getting 3029 in 3dMark2000, and that's with a crappy V3 2000.

[Himself]

Dropped the voltage to 1.68V, 36 celcius in IE, 38 running seti.

[Wombat]

I really doubt the tape is that good. But if you're going to grease it, go get some Arctic Silver from Inflow Direct.

I never thought getting a premium grease could make such a difference, but it makes the difference between stable and not for me.

[DentyCracker]

I need to redo my HSF I think. I was running coolerwith a CoolerMaster HSF with a 5400 rpm fan and standard HS compound than with the ATTech CM25 with a 6750 rpm fan and Arctic Silver compound. Methinks I rushed to put on the HSF and put too little compound on

[This message has been edited by DentyCracker (edited 12 October 2000).]

[Himself]

I'm happy with 800 for now, maybe a few months down the road I'll be bored and try the artic silver paste. I'm not sure heat is the issue with not going beyond 800 with my paticular cpu. 36 is cooler than my K6-3 450 was running at.

[Wombat]

Yeah, but you can't really think about it that way. The K63 was .25u, right? So the chip was more spread out, and heat generation was as well. Although smaller processes generate less heat, they have to dissipate it from a more concentrated area.

[Gurm]

Cheap thermal grease is almost as bad as no thermal grease. Even the tape is better than cheap grease.

- Gurm

------------------
Listen up, you primitive screwheads! See this? This is my BOOMSTICK! Etc. etc.

[Greebe]

So I suppose Thermalcote's standard zinc/silicone HS compound with a thermal conductivity 0.43 C/W is worthless compared to Arctic Silver's at 8.0 C/W, and would be no better than nothing at all?

[Himself]

Ok, I just sent off for some arctic silver, so settle down nah.

[DentyCracker]

Was planning to make changes last night but... went out with my brother and had a few drinks... not up to FUI so went straight to bed oh well i'll try this evening

[DentyCracker]

Changed heatsink back to aluminum CoolerMaster, but put Arctic Silver on it. Softmenu III set to 900 MHz (9X100 MHz)
Windows protection error at 1.65V (1.6 in bios)win98
Fatal exception at 1.68V (1.625V in bios) win98
Boots fine at 1.70V (1.65V in bios). Hang near end of Fifa2000 Game.
Fine so far at 1.73V (1.675V in bios) Win2k

Ambient T 28°C CPU T 46°C

Backed it down to 850. Runs like a dream at 1.65V (1.6V in bios) rock stable. Probably a true 850 core


[This message has been edited by DentyCracker (edited 13 October 2000).]