I have an X3 but having both specs would be great.

I would like knowing the size and spacing of the board holes for the heatsink as I am making my own cooling and will need to make retention clip too.

What about ordering 2 psus when I only have one X3 in order so I can split costs with a friend who has another order.

Bobsag3 thanks for all your efforts and blackarrow, great progress, those numbers are great!.

I don't know if my last questions have been lost but bobsag3, can you ask them?:



Thanks.

I think I can clear some of the confusion (I am not related to them but I know how the circuits/components involved work) .

The choke/inductor is not from the power supply but from the 12 to 0.85v dc-dc converter in the hashboard and that is good news as they are not made yet.

They should be able to provide a 10 to 15% improvement in overall efficiency as long as the rest of the dc-dc converter design is really optimal. Designing a dc-dc converter for those powers is really hard and at 200A a tiny internal resistance anywhere is catastrophic (and inductors are a prime candidate for unwanted internal resistance).

Also knowing the real asic specifications they might extract some extra stability/overclockeability by adjusting the vdroop and some extra efficiency by adjusting frequency and gate drive parameters at the dc-dc converter so there is stil a chance for some improvement.

Also you can't make a power supply or dc-dc converter 100% efficient and we are going to have at least two between the wall and the asics. 1st one turns mains into 12V and 2nd one turns 12V into the asic vcc (0.85V if i am right). So lets say that both those converters are 90% efficient wich would we an awesome job, 0.9*0.9=0.81 so roughly 20% more power at the wall than at the asic would be an awesome job. If they have active pfc they might have even another dc-dc converter.

Hi, I see that the power supplies are in the blackarrow store but I have a couple of questions.

1: It shows a shipping and handling fee, can't it be shipped with the main order if I pay with btc?

2: If it can't, can I order 2 psus? (A friend also has an order for an X3)

At what temperature was that 150W?
Because at 28nm temperature plays a huge role in leakage and in some cases it can be up to 50% of the power draw.

I hope that there is stil a chance of improving it.

Hi, I am building a phase change cooling for my prosperos and knowing the size of the chip package would help me quite a bit.

If the placement and distances on the board/case are known too it would be even better as I could have everything ready for when they arrive.

Thanks.