Hmmm just got the Mach II GT running but...

mjh74

New member
Hi All,

I've just moved over to the Mach II GT from water. Got the system up and running with a P4 Prescott 3.2 on an Asus P4C800E-Dlx. Initial temps showed evap as being -60c and CPU idle -20c (reported by MBM5). Started playing around with overclocking and reached 4ghz at 1.4vcore. Suprisingly as the night went on whilst running prime95 the CPU temps went up to about +20c (full load), evap -43c. After coming on here and seeing other peoples results, this seems quite high. Seeing as I'm new to all of this, can anyone offer me suggestions as to what I could do to lower these temps? My room tends to be quite warm so I'm sure this would have a knock on effect...

Mark.
 
You dont have good contact between the CPU and MAch 2.

What thermal paste did you use?

Also check out threads about bad contact.
 
yes looks like your contact isnt that good

first of all you are getting very low evaporator temps...especially for a prescott Non D0 i guess...

WIth the P4C800E your temps should have been arround -30C

i am getting lower than -40C since the P4C800E sensor maxxes...thats with the P4C yes.

Make sure you have screwed well the back plates screws + installed correctly (orientation) the cpu kit and i also used both 2 metalic washers before the springs for the installation of the evap head...
 
one last question

can you look at the box of your prescott and tell me whats the FPO batch of it?

i want the last 5 letters

something like SL7E5 ;)
 
Also, stick the spare washers on the screws, its helps make a better contact, make sure the screws on the back are nice and tight :)
 
Thanks for the replies all...

I'm pretty sure the back plate is screwed on as tight as possible and there was only 1 possible way to get correct orientation for my mobo. As for the 2 bolts and springs, I just "nipped" them up when I started to feel them tighten so I'm going to try a couple of the metal washers behind the springs. I used the artic thermal paste that I got with the kit, is there something better that I should be using maybe?

As for the CPU, sadly it's a C0 stepping, not D0 :(.

Mark.
 
i bought some artic ceramiuq compound for my CPU, its optimised for negative temps down to -100 + or something crazy like this.

Works really nice for me, its a really thick stodgy solution, a pain to apply unless you use your finger :P
 
it shouldnt be the compound mate

the ceramique is designed for down to -150C

and i dont think you have used too much thermal paste either..

use the size of a rice grain of as and leave it...let it spread alone on the P4 cpu..
 
Isn't it the ceramique that actually comes with the mach II GT?

Whatever it is I've just used a nice thin layer over the CPU. I'm still pretty sure it's the pressure of the evap on the CPU thats the problem though. I'll find out in a couple of hours when I get back.... :)
 
Well, after putting washers on the 2 bolts and screwing the bolts down nice and tight, I'm not that much better off. Evap temp = 59c and CPU idle = -22c which is overclocked from 3.2 to 4.0, 1.4vcore. The minute I show it full load with prime95 I'm creeping back into positive temperatures. Evap showing -51c, CPU 0/1c. A lot better than +20c that I was seeing the other night I guess but still not as good as others on here :(.
 
Ok i guess you have to use something then in order to prevent the metalic plate moving from the plastic plate of the front part of the cpu kit...

do a little search in here...you will see what i mean.
 
excuse me if you have already mentioned this, but im too lazy to read the first page again and i cant remember what was said the other day, anyway please enlighten me in wot motherboard you have, im trying to figure out if there could be any obscure positioning issues, as i cant see what the problem is if you DEFINATELY have a good contact, the evap temp is, its not too high which mean it is cooling ure CPU a bit, but i still really dont think u have good contact. First time i put my kit together i had good ideal but i was getting like +6 on load, my stupid dad had mouted the socket the wrong way around, so i was getting very good contact, so when the CPU was pumping out heat, the mach2 cudnt dicipate it efficently.
 
Ok I have included the URLs of some pic's I have taken of my install. If I try to tighten the screws anymore of the back plate I will start to strip threads, all looks ok there. The thing that does seem really flimsy and loose is the metal plate with the 2 brass posts. I have taken a short mpg of me wiggling it. There is a lot of play there and the plate itself seems very flimsey. The CPU as you can see looks like it was making a good contact but judging by the plate, probably not good enough. Was anyone elses like this?

http://v4.livegate.net/mjh74/Picture1.jpg

http://v4.livegate.net/mjh74/Picture2.jpg

http://v4.livegate.net/mjh74/Picture3.jpg

http://v4.livegate.net/mjh74/Picture4.jpg

http://www.filespace.org/mjh74/slack.mpg
 
mjh74 said:
Ok I have included the URLs of some pic's I have taken of my install. If I try to tighten the screws anymore of the back plate I will start to strip threads, all looks ok there. The thing that does seem really flimsy and loose is the metal plate with the 2 brass posts. I have taken a short mpg of me wiggling it. There is a lot of play there and the plate itself seems very flimsey. The CPU as you can see looks like it was making a good contact but judging by the plate, probably not good enough. Was anyone elses like this?

http://v4.livegate.net/mjh74/Picture1.jpg

http://v4.livegate.net/mjh74/Picture2.jpg

http://v4.livegate.net/mjh74/Picture3.jpg

http://v4.livegate.net/mjh74/Picture4.jpg

http://www.filespace.org/mjh74/slack.mpghttp://www.filespace.org/mjh74/slack.mpg
MJH I don't have permission to view your stills, but jpeg is wibbly wobbly

sw
 
Sorry standin wave, try copying and pasting the URLs into your browser. As for the plate, it IS wibbly wobbly! :D
 
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