BlackArrow has 100GH miners for $352,so a 200GH for $300 is very doable,but I don't think we'll see them till June or so.
Had a look at that, but don't understand their design specs. at all:
- 1.56Ghz clock? Why so high - it's just making timing problems for yourself and it's unnecessary because:
- at 0.5W/GH the chip will be dissipating 50 watts. To get rid of that heat reliably, even with water cooling (which isn't mentioned) you'd need a die
size of around 140 square mm, giving a core area of about 127mm. With 'loose' routing that gives around 190 - 200 million gates, so;
- their 64 unrolled cores use the equivalent of 3 million gates each. As each core has 2 x 64 stages then;
- each stage has 3000000/128 = approx 23k gates per stage. This is 3 - 4 times too many gates per stage.
- based on their own power specs then there are about 60 - 70 million gates switching every clock cycle. Even allowing for control
circuits that's still 70 million gates used out of an available 190 - 200 million (loosely routed at that) It doesn't make sense. Why not put in more
cores and lower the clock speed?
This design really doesn't sound right at all, or someone has seriously screwed up.
