Remember the fun days of extreme overclocking? People would drop their Pentiums into liquid nitrogen to try and get the most possible speed out of the chips.
I agree the cooling performance of the liquid would certainly degrade the more boards it had to deal with, and perhaps the optimal limit is indeed what the C1 offers. I know there were some folks doing total immersion tests with the Spondoolies boards to get some crazy density. It would be interesting to see how far these things can be pushed.
During GPU day's people pushed cards hard. But you had a very long warranty and it was not hard to unplug one card and send a RMA in.
With today's asis if you push to hard chances are you will end up with a dead chip. Some gear does OC better then other Bitmain has always done good in OC area.
Yeah, the GPU/CPU were pretty easy to RMA. It's considerably tougher to do the same with the ASIC mining gear. I have had mixed luck with the Bitmain gear. My S1s all overclocked and ran solidly at 200GH/s. My S3s... well, I've got a few that stay steady at 478GH/s. A few that won't go above 440GH/s. One that just will not run consistently above 400GH/s and one that has been running at 504GH/s pretty much non-stop since I got it last year. Oh yeah, and 1 that just flat out died on me at the end of January. Oh well... it had earned its keep by then, so I just wrote it off
The GPU's RMA on most companies was truly amazing. I think most of my cards were like 3 and 5 year warranty. Which is insane for a video card. It's out of date by that time.
I didnt have to do that many RMA's but I did a few. It was very easy unplug the broken GPU and within 2 weeks normally you would get a working card like it. Only thing was a lot of RMA cards were beaten up a little and did not look near as nice.
On asics manufactures they obviously can't offer this for to long. In most cases 90 days.