OK i've thrown in a bit of a red herring in the fan speed. The fans were at auto when i was getting those mega numbers and it sounded like a wind tunnel in here and was mighty warm.
I set them to 10 after sitting next to the machines to take my screenshots and compose my post.

As for firmware I am using 2.6.7 and there is auto fan in there (see screenshots) :

https://dl.dropboxusercontent.com/u/201234/gallery/Firmware.jpg

https://dl.dropboxusercontent.com/u/201234/gallery/Fan.jpg

Here's my Acis stat screen :

https://dl.dropboxusercontent.com/u/201234/gallery/acis.jpg

Tomorrow these are being moved into the cold room rather than my lounge, that should keep the temps down far more than this ambient room temp.

I'm also toying with spinning the fan around (test done) and sticking it in front of a portable AC unit thats in there running and seeing if having the fans run 10 on and it sucking in cold AC air can get some numbers crunched at a quieter level.

https://dl.dropboxusercontent.com/u/201234/gallery/fan_reverse.jpg

I was just trying to understand why when i'd not made any changed to the SP20 that the hash rate figures rose so high, after all the only thing i'd done was to change the pool it was mining.

I have asked ST direct via a support call if the hashing is linked to fan speed via voltage as if the fan speed being on nuts has the system draw more power and thus crunch the numbers higher then having a fan reversed sucking in cold AC air and the fans set low isn't going to do anything, surely then i'm just going to have a rig running at 1.4TH/s just really cooly.

Given what you've said about chips throttling due to heat, i'm actually hoping having these cool by the AC and sucking in the air that the hash rates will be even higher as the chips can continue to work harder without getting hotter. Either way we'll know tomorrow is ST don't reply today to that question via a ticket.

LeeC

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