Topic: [ANN] Spondoolies-Tech - carrier grade, data center ready mining rigs - page 321. (Read 1260290 times)

I am waiting too... I was told that it was shipping at the end of the month.  What is up with the delays?

So I got my partial refund for the GB sp30. And a few hours later the bitcoin price falls 5%, 

You think maybe that was not a coincidence? That the price fell because many people who just got their refund sold the btc?

If you want to host it with us (we have shelf space available in one week!), we should be able to provide power supplies for you for a reasonable price. We've modded server PSUs to work with Antminer S3s before. We've also got a few spare ATX PSUs.

I have compared the readings from my SP30s' power supplies to measurements from my PDUs. The AC power consumption metric is accurate for SP30s with Emerson PSUs. It is usually not accurate for Murata PSUs. The DC power is accurate for both. If you have a Murata PSU, you can estimate your AC consumption by taking the DC consumption and dividing by .92 (if you're on 240V), about .91 if you're on 208V, and about .89 if you're on 115V. Note: I've only measured the 240V efficiency myself; the .91 and .89 numbers are guesses based on what I've seen and read for other power supplies. The PSUs in the SP10s are similar in efficiency to the Murata PSUs in the SP30s.

You're misunderstanding the meaning of the voltage settings. Those are only initial voltages. The SP30 firmware will adjust the voltages, mostly over the first 30 minutes of operation, in order to optimize performance. If you want to reduce the power consumption of an SP30, you can either reduce the maximum voltage (not recommended), or you can reduce the maximum wattage of each PSU (much better method).

Kill-A-Watts systematically underestimate the power consumption of PSUs with active power factor correction. Do not rely on them for anything important. The issue seems to be that Kill-A-Watts don't actually integrate power consumption in analog, they just sample instantaneous voltage and current and digitally integrate. I've seen them underestimate miners' consumption by 15% before on Cointerras.

How to read PSU power consumption lines? First go to the ASIC Stats page, and look for a line like this:


1504 is the AC power consumption, in watts. This number is accurate for Emerson PSUs, and inaccurate about 50% of the time for Murata PSUs. 1328w is the 12V DC power consumption in watts. The three numbers following that are the last three 12V DC measurements taken. The stuff immediately after in parentheses is something I don't understand. The last number (lim=1330) is the DC power limit in effect. Usually, this will be what you have set in the Settings page, but if you're on a low voltage (208V or less) it may be lower than that, and if you're using a Murata PSU with version 2.4.20 or later, it will be capped at 1300W.

without reading the whitepaper because i am at work at the moment (but still bum around in bitcointalk :-))
What does Freicoin have to do with that and what do you mean by its even more interesting for FRC?

... GO FREICOIN! This is going to be an interesting time for Bitcoin and even more interesting for FRC!

Hey guys... When can we expect October Batch 1 shipping?  Now they are shipping at the end of October?  Why is that?  How long will shipping be to Canada once it leaves the door in Israel?

Thanks

Good morning to all.
After 2 weeks of holidays and low availability, I will be available today on my Skype, zvi_shteingart, to handle clients support calls.

Don't send mails, just ping me on Skype - but have access to your machine ready (team-viewer or port forwarding ONLY, please) and ability to physically restart the miner.

Regards

Im not sure the exact efficiency of the PSU, but 90% efficiency is probably a good guess if operating at 240V. for 760W DC thats about 845W at the wall. 85% efficiency would be 895W at the wall

Offtopic:

Congratulations to Adam and the other members of Blockstream: http://blockstream.com/
The white paper: http://blockstream.com/sidechains.pdf

Exciting times ahead.

Guy

At this point I'd suggest waiting to see some updates from Spondoolies...  Been pretty quiet lately and no SP20's have shipped yet with 9 days left in October.

I don't think so unless you have a breakout board for it. Evga 1300 watt for off the shelf. Newegg had them for 168 free shipping with 20 rebate few Weeks ago. You'll want to look at the breakout boards threds. Most server psu only work well on 220v or better.

Noob-question:

I'm considering buying some SP-20. Has anybody an idea if this PSU would work with it:

http://www.gekko-computer.de/Stromversorgung/IBM_Server-Netzteil_xSeries_445_1200W_-_74P4354_i19_373_0.htm

May batch SP10s had slow-corner* ASICs.

_{* I think that was the right term}

Yes i'm positive on the setting. Mine is first batch .
I thought only SP30 has issues with first batch.

I got a steady 700W in the stats page. What batch is your miner? 760W seems a bit too much for those settings. Are you sure you are having your max voltage set to 0.610?

Uhhh how did you measure your power consumption?

at 0.60-0.61 setting, i got ~760w from the stats page. I was told thats DC, so AC would be like 900w. Thats terrible isnt it?

You are lowering your max voltage too right? Because I don't see how it's useless. As I stated just a few posts ago I found out that optimal settings are min voltage 0.612 and max voltage 0.616 (or 0.618) and I get 1Th/s at 700W. You want better than that?

Edit: Also the 77c reading means <=77 degrees, it's not actual 77.

To be honest, after wasting lots of time today i find voltage setting is the utterly most useless. This is why i asked SP-T and got the same answer (loweing voltage.....)

Why didnt i just set power consumption right from the start if what you propose is true.

I just applied the same setting to several SP10s and ....... got different results. Some still have dead chips. I think i will never find out the minimum voltage on these chips. Waste time and efficiency is still terrible.


PS. even the intake temp is 15c, the chips temp under ASIC stats still read 77c. Same when intake temp is 24c.

Which part of 240v plug dont you understand? Please dont ever reply to my post. Frankly i find all your posts to be nonsense. Especially when you even argue the Bitmain C1s might have different waterblock process.... all that BS.