Finely hit 850mHz with the Eclipse'd Athlon!

[Brian R.]

Do high-output Intel processors (not counting a peltier cooler) ever require this quality of ps like the 425 Guyver mentioned above? Seems I have a full load in my case and I'm therefore curious.


Greebe, maybe drooling is what screwed up your current power supply. Lets be careful out there.


[This message has been edited by Brian R. (edited 28 November 1999).]

[Rags]

A P3 600 runs about 55 watts.

Rags

[Greebe]

This is drawing ~+70watts @ 850!

[MXR4LIFE]

Greebe
What Motherboard are you using?

I just got a K7M and will get one of your children w/K7-500(? core) from AZZO by FedEx Monday 29th.

I have a SMicro SC750A w/Sprinkle 300w, I may need some more juice, aye?

And what cooling you using? I have a Alpha P125 coming too ( I Know it will need some surgery) or I have a Panaflo Orb (HP turbo?) to choose from. And how hot do these things get?

------------------
"If all else fails, read the instructions"

[Guyver]

Having the 425 gives your system the reserve power it needs for momentary load increases, such as spin-ups for CDR/DVD/Tape/HD's/etc.... The quality of the PCP&C units give me that much more of an assurance that my system will work properly.

Guyv

[Greebe]

MXR, the MS-6167 mb and a GlobalWin FKK32 hs

[MXR4LIFE]

Hey Greebe, Is that CPUMark99 v1.0 or 1.1?

My K7M w your Eclips Mod K7-500 gets a higher score. But it ain't that far off really.
ZD WinBench99 rev1.1

@700 1.7v 1/2 cache :63.5

with old rev1.0
@700 1.7 1/2 :61.8
@750 1.75 1/2 :66.1
@800 1.75 1/2 :70.7

BTW I got the PC Pwr&cool 425 PS

I need to do some testing, the BIOS chirps @800 and I don't think it's due to current drain. I believe it's the BIOS acting screwy, but what do I know. Maybe raise the core v?


------------------
"If all else fails, read the instructions"


[This message has been edited by MXR4LIFE (edited 13 December 1999).]

[Greebe]

Yes it was 1.0, but I'll add that's supplied with Winbench 99 1.1

Also after tweaking some mem settings I'm @ 71.8 now!

------------------
Designer of the first Athlon mod. Currently marketing the "Eclipse" through AZZO Computers.
Anyone up for an Eclipse'd Athlon 850? Email me for more information

2836 mips, 1.107 gflops @ 850 mHz 1:3 latency
CPUmark99 71.6

[Greebe]

Oops, guess I'll have to update my sig again!

[MXR4LIFE]

Thanks Greebe,
I have a copy of the old ZD Benchs I D/L
I just got the full suite of 2000 CDs last week,
it's got some cool games shots for 3D

So what's the theory on the 800+ chirps?

------------------
"If all else fails, read the instructions"

[Greebe]

MXR, The "chirping/singing" sound effect is from drawing to much current from the power supply.
That's a fact, not a theory.

Would you and anyone else paying attention, Please do not take the heatplate off! I have two here that were returned defective. Upon inspection I found the silicon cap on the cpu that transfers the heat to the heatplate cracked on it's edges. This happens when the heatplate and pcb is incorrectly reassembled. If that happens it will put a fracture right through the chip itself and destroys the cpu!!!

[MXR4LIFE]

So the fact that I have a a PC Power&Cooling Turbo Cool 425W dosn't affect this "drawing too much current from Power Supply"?
Could you please document this "fact"?
I enjoy a good debate, in search of the facts.


As far as the heatplate goes;

Why are you saying that to me? I never ran it without the heat plate. I know that these CPU's will overheat in seconds without a heatsink on, to the point of destroying the CPU.

I remember a Tech - Website warning of this (running without a heatsink) not too far back, even showed a close-up of the cracks on the slug. It was a PII 450 I think?

If you want to discuss this matter further' I recomend E-Mailing me.

[MXR4LIFE]

To all of those paying attention :

Once again I’m afraid I will have to disagree with you again Mr. Greebe. I would recommend removing the plate before overclocking. If you examine the plate you will notice that it is a stamped part, yes there is a little machining on the sides, but the whole front and back of the plate is left unmachined. When this part is manufactured they stamp the plate for the slots, size and the raised L2 chip “lands”. This stamping severely warps this plate, to the point that the most critical section, the center where the CPU slug is, becomes concave and cannot transfer heat very well. It must travel to the outside of the plate to make contact with the heatsink to transfer the heat. On my sample it was almost .015 in some areas (the center) and Heat Transfer Paste wouldn’t help a bit IMHO. I removed my plate and face milled it, then lapped it as flat as I cared. The raised L2 lands don’t touch the chips, as everyone knows by now. Even the .5mm or .020” aluminum plates don’t bridge the gap, I made some thicker ones out of copper and I believe you have some silver ones?
At any rate I believe everyone should know the fact, I understand that a lot are tossing the plate out and mounting the Alphas directly against the slug. I may do that in the future but this was the easy fix IMHO.

[FastEddie]

Hey Gary-There are a number of reasons for the consistent chirping on the K7M. All of which have to do with the bios Hardware Monitor Setup, as your power supply is more than adequate to lhandle any and all surge voltage your K7 might draw.

The board will chirp is you have a fan header enabled without a fan connected. Or if you have a fan header enabled with a non-rpm signal sending fan, (two wire instead of three). Or if you have a defective fan, that rotates, but is sending an intermitent rpm signal.

You'll also get that chirping on the K7M if your cpu is drawing more than 1.7 core volts, which is what's happening in your case. Set the vcore to ignore in Hardware Monitor and the chirping should stop.
FastEddie

[Greebe]

MXR, I'm not suggesting that you will do that. I'm only stating it because there are those that aren't content unless they can see the cpu and cache for themselves and don't realise just how physically fragile it is!

And they are right! If the cpu is powered up without the heatplate, it WILL fry in seconds!!!

Your PowerMan 425w is an excellent supply capable of supporting a dual Athlon sys running upto at least 1 gHz (x2)!


FE, I've tested the K7M and it does the same thing. What I'm stating has nothing to do with HW monitoring and only deals with the enormous power consumption that this cpu draws when running at such speeds on a 300w supply. In my case I only discovered that once 800 1:2 running Prime95 and to an even greater extent @850! The fundemental harmonic is 24 kHz and it constantly rings only when running Prime95! The chirp sound is typical of only a momentary current drain but if severe enough can cause the caps to repeatedly cycle too deep and that could be quite damaging. I suspect if my cpu would do in excess of 900, that would kill it and probibly take the cpu/MB/mem etc with it.

And if your wondering what meter I'm using to test with, it's a Fluke 867BE.

[This message has been edited by Greebe (edited 15 December 1999).]