I have never used it but from what I was told similar to v0.9.2

I think that firmware v0.9.4 drops the voltage to the chips further. It pulls 540 watts at 120v now.

Thanks for that Kano.

As of this moment I took the case back off and put on the external fan on top pushing air downward to move the hot air around the components.

This is the result.

I also agree. As you can see my ASIC CPU temp is considerably lower then those others reporting.

I will see what the ASIC CPU temp change is when I revert to my temp cooling solution.

The great thing is that cgminer does not restart with firmware v 0.9.4

Here are the results since the update to firmware v0.9.4 using case cover on and original fans.




As you can see. The performance reported by cgminer is the same as when the system was using firmware v0.9.0 with the case cover on and stock fans.

Later I will be removing the case cover and put the fan pointing down back on the unit to see if it improves performance.

I will do this with out restarting the unit in order to see if the Work Unit (WU) submitted per min goes up from 7600 back to 8200+

Is that your results with the case cover on or off? Do you have any added airflow? Also what GH/s does the pool say the unit is running at?

Okay system back to default factory setup.
Factory fans & Case Cover On running firmware 0.9.4.

Results after 10 mins.

HT-900

http://www.amazon.com/Kaz-HT-900-Honeywell-TurboForce-Fan/dp/B001R1RXUG



The link below is for the better one HT-908

http://www.amazon.com/Honeywell-Whole-Circulator-Floor-HT-908/dp/B001R1Q0OG/ref=pd_bxgy_hg_img_z

http://www.youtube.com/watch?v=trI0t8Vx9FM

And the FPGA Error once again.

I can tell that this thing is struggling with the lack of adequate airflow now. However it is not as bad as the first firmware v0.9.0



Edit: 500GH/s Average rate reported by pool for over 2hrs now. Down from a reported rate of over 540GH/s by the pool with the case cover off and a fan pointing down at the boards.

That is a loss of over 40GH/s

The famous show stopping FPGA Error that drops performance.

Firmware v0.9.3 stock cooling and case cover on.





Note: once v0.9.4 is released I will do a baseline with cover on and then off and then with the new fans with cover on.

Average speed seems to be dropping and HW errors are increasing.

Finally auto restarted less than 2 hours later.



You can notice that firmware v0.9.3 seems to have improved the speed off the start.
I also notice less heat buildup under the unit.

I will leave it with cover on for the next 5 hours and see what pool reports.

Thats a work of art

For those still sceptical.

Here the jupiter with the case top back on and back 100% to stock running firmware 0.9.3

Note: I put the case on while the system was operational as to not stop cgminer as it has been running without restarts.


Notice that within moments after fpga error is displayed.

Same CGMINER start time

Performance update.

Present setup case cover removed and large fan placed in the middle of the 4 ASIC Units blowing air down creating a downdraft of cool air over all the components.

7 Hr plus operation results with 0 cgminer restarts.

Running firmware 0.9.3 (Fix the reboot issue)





The screen shot below is what the performance was before removing the cover and putting the large fan on top blowing cool ambient air down.

Running firmware 0.9.2

I was going for an airflow with the following result.


Or this with a personal touch.



This is a good video to watch from silverstone about air movement.
http://www.youtube.com/watch?feature=player_embedded&v=8m8fC809TK0#t=46
http://www.youtube.com/watch?v=qcAjEazxCik

And 3rd party review on the Silverstone FHP-141
http://www.youtube.com/watch?v=jtlO7f9IHNg

http://www.scan.co.uk/products/140mm-silverstone-sst-fhp141-140x140x38mm-fhp-series-black-case-fan

nice! I am glad others have stepped up to the plate

I have opted not to use the Avalon type fans for the first part of the test. I went with a fan type that is more readably available for those that wish to shop at your local store.
Fan on the right is 140mm rated at 175 cfm at 2000 rpm. The fan on the left is the avalon 120mm one at 4000 rpm.



Silverstone http://www.silverstonetek.com/product.php?pid=366

Close ups of the 2000 RMP Fan Connector. I will be using the adapter to put it directly to the power supply rather then use the power feed from the Jupiters boards.

1st photo Silverstone 140mm / 2nd photo Silverstone 140mm / 3rd photo avalon type fan 120mm

Yes the control board is where you can find the FPGA

PuTTY Download page putty.org
http://lmgtfy.com/?q=putty

This photo. I had mentioned on page 1 that my ambient room temps and included the results before and after.

A few people have had similar success only noticeable after running for a few hours.

Others report the unit slowing down or needing to constantly restart cgminer.

Those that have a higher ambient room temp make note of an error that slows the hashing down once the fpga does not submit work.
Maybe the fpga needs a heatsink? I am not looking at adding heatsinks just yet.

However I do make note that BFL does include heatsinks on their small components and also have vertical and horizontal air blown on the units.


Enable ssh in the webinterface.

Then use putty program to ssh into the unit via its ip address.

You will be prompted with a username request.
Use the following
user = root
password = admin