Also, now that bitmain have the new chip and have implemented the string design, I call upon bitmain to:
1. Provide an S3 / S1 upgrade kit to the S5
Why?
Just sell your S3 for $150-200 (current going price on eBay). Then pony up the additional $250-300 (assuming a new direct purchase from Bitmain) for a new S5 which is probably cheaper than the upgrade kit would be. After all, you could only re-use the cheapest parts of the assembly anyway, so not worth the effort.
For the S3's there's no enough incentive to upgrade, but if the mounting is the same I'm sure there's a large number of S1s still out there that are getting close to scrap right now even with underclocking. Shipping on 20 chain boards should be considerably cheaper than 10 S5's, and there's got to be some decent savings in materials even with the volumes they get those heatsinks, fans and frames at.