Block Erupter Cube - Additional Overclocking

[sidehack]

Not sure if anyone really cares, but it's possible. I actually worked one up about a month ago, but they need cooling improved and since they overclock natively you can really only get another 5-6GH out of them. I've had two people ask me about Cube overclocking in the last three days so I figured there might actually be demand for the information. Now that I think about it though, of course there was demand for the information. I'm sorry I didn't post this before Thanksgiving.

http://www.gekkoscience.com/webuilds/cube_oc/cube_oc.html

[BlackLabel_Actual]

The article was well written, I'm an Electrical Engineering student so I will likely be doing this to one of my cubes here shortly.

[buckwean13]

Interesting, this may prove quite useful once the price of used cubes drops enough to justify picking them up at every available opportunity much like USB block erupters are now, i am quite happy with my two perfectly func tional cubes (i understand i have a certain degree of luck in obtaining 2 cubes working in perfect order, even having zero experience with these being my introduction to mining) but even with cubes that only work well on low clock this may be their redemption.

[Singlebyte]

Sidehack,

What causes the cubes to no longer go into "high" mode?  I have 4 different cubes that clocked high for about 2 weeks.  Now none of them will overclock.  In fact, when I turn on "high" mode they seem to slow down.  I have them in a 30 degree garage (so cooling is not an issue) and I have them on two 1000w 80 Plus Gold power supplies.  I know one or two cards do not like to be over clocked because they "X" out in high mode.  I have tightened all heat sinks and moved cards around trying to get better combinations.  Any ideas?

 

[iglasses]

Will cubes run missing one or more cards?  If they would I wonder if you could use a process of elimination to at least diagnose which card (if it was just one) was causing the high clock problems.

That article was the coolest thing I read today.

[sidehack]

Yes, Cubes should run with any number of cards in any arbitrary arrangement.

Also, thank you.

[J_Dubbs]

Sidehack,

What causes the cubes to no longer go into "high" mode?  I have 4 different cubes that clocked high for about 2 weeks.  Now none of them will overclock.  In fact, when I turn on "high" mode they seem to slow down.  I have them in a 30 degree garage (so cooling is not an issue) and I have them on two 1000w 80 Plus Gold power supplies.  I know one or two cards do not like to be over clocked because they "X" out in high mode.  I have tightened all heat sinks and moved cards around trying to get better combinations.  Any ideas?

 

Interested in an answer as well...

I have 2 cubes that run high clock just fine. And then another 2 where one will randomly show "x" on all chips until power cycle, and the other the hashing decreases on high clock as described above. My newest cube I turn on high clock and the hash and efficiency steadily decrease, any insights?

[iglasses]

One of these days I really want to do a survey on the best performing cards in my four cubes and put them all together and high clock to see what I get.  I figure if I can isolate the good ones and then not even try to OC the weak hands it should increase my overall rate.

[crackfoo]

Whats are the chances that there could be new miniblades made with newer/faster chips? Is that possible?