SPCR

Ok, this is starting to frustrate me and cost me too much money for little to no benefit..

As posted on another thread i just got my Papst FM fan.. dissapointed that it wanted to be driven by the PSU directly also that I had to adopt for the louder fan as the other was out of stock I still was keen to finally see what my SLK800 could do with a proper rated higher CFM fan for it...

Being 120mm i had to obviously suspend it away from the heatsink i dunno if this is the culprit for dissapointing results..

Anyways just got it connected.. having a play... I have managed to get 47 degrees idle out of it... my window is open the night is similar temp to last night... I tested my zalman flower coolers original fan on its bracket last night under similar conditions... I am pretty sure that I got a good few degrees lower than this.. I am about to CPU BURN it.. which I know was stable at 51 degrees... I am getting lackluster performance AGAIN out of this papst fan.. its difficult to sit it over the heatsink but its pretty much centred at the moment... I had the fan at an angle just now to have the centre of the fan near as poss to the centre of the heatsink... I have just now brought it back square with it and think that it may have lowered the temp slightly... Anyways I got to thinking.. tho this fan is a very high CFM.. noisy ish.. at 80cfm allegedly... this is obviously spread around the fan... I am wondering if there is a nasty deadspot in the middle of the fan... sitting basically previously over most of the heatsink hence the poor performance...

I just can't believe this... sure i guess its going to make a nice case fan sometime, tho it IS loud.... what am i to do..!? I was expecting at least a 10 degree drop with a quadrupling of CFM... I think I am going to give up.... I may actually go full circle, back to my Zalman fan.... to be honest I'm tempted to go back to my flower cooler... tho there is a slight improvement in temperature over this model..

In the time it took to type the last paragraph i have been running CPU burn and already it is over the 51 degrees that the zalman 80mm fan had.. gutted £30 down the pan.. AGAIN!!!!!!

jimbobUK wrote: Being 120mm i had to obviously suspend it away from the heatsink i dunno if this is the culprit for dissapointing results..

I am getting lackluster performance AGAIN out of this papst fan.. its difficult to sit it over the heatsink but its pretty much centred at the moment... I had the fan at an angle just now to have the centre of the fan near as poss to the centre of the heatsink... I have just now brought it back square with it and think that it may have lowered the temp slightly... Anyways I got to thinking.. tho this fan is a very high CFM.. noisy ish.. at 80cfm allegedly... this is obviously spread around the fan... I am wondering if there is a nasty deadspot in the middle of the fan... sitting basically previously over most of the heatsink hence the poor performance...

The general airflow round the fan is that the air blows out in a circular pattern away from the fan, what u might be able to do to get some better temps is to build some a duct for the 120MM fan to blow or suck to the zalman, kinda like the one Rusty here has