Quote from: sergio on June 28, 2014, 01:57:18 AM

Quote from: samsonn25 on June 21, 2014, 03:01:19 PM

Pressure from neptunes?

The neptunes can not compete against the S3.

Most likely the S3 will be a much superior product that may ROI.
Here I will provide a basic comparison:

S3:
Good:
1. May ROI.
2. More reliable, uses 4 pci-e connectors to supply 400 Watts of power, since each PCI connector will be using 100 watts, and they are rated for 150W, it is very safe and reliable.
3. Based on S1 design which has proven to be very reliable.
4. Very important, sells from stock, makes it easy to calculate possible ROI.
5. Enclosed case, with 2 fans on each end for improved cooling.
6. even though chips are 28 nm tech, they are not overly overclock and therefore yield 0.8 W per GHahs/s, that leaves room for overclocking.
5. 500 Ghash/s
6. coupons?

Bad:
1. if priced to high may not ROI.

Neptune:
Good:
1. 0.7 Watt per Ghash/s.
can not think of anything, other than being 20 nm tech, but highly overclocked already.
Bad:
1. It will not ROI by far, it is highly overpriced.
2. the pci-e connector is being highly stressed, pushing 400w on a connector that was designed for 150W is not only a fire hazard, it guarantees that in a short time the connector will burn especially if ambient temperature is high.
3. poor case design, each neptune is actualy a box which is 1/5 of a neptune, and the controller board has no case.
4. no room for overclocking, the pci-e is already stressed, in fact underclocking may be needed in order to prevent the cables from burning, in which case the speed whould equial the speed of an S3, but the S3 having a much lower cost, selling from stock, and more reliable.
5. already on the knc forum it can be seen they suffer from the dead core problem, jupiters had this problem, but on the neptune it seems to be more severe, decreasing the effective hash rate.
6. many power supplies do not work with neptune.
7. pre order only, does not sell from stock, guaranteed not to ROI.
8. on Batch 0,1,2 refund are taking forever, and seemed to have stopped.
9 . batch 3 no refunds.
10. miner protection is false.
11. hash while you wait is an scam, after refunds had stopped it was anounce that it could cost a neptune.

If I had to choose between S3 or a neptune, the choice is obvious, the S3 is the way to go.
Conclusion the neptune will have no influence on S3 purchases.

For the record no retail btc ASIC machine even comes close to ROI.

1TH .7 watts/GH system would need to be priced under $1000 usd. Assuming Btc price $600, Electricity .16, Difficulty jumps @ 18%