<snip>
Do people still fall for that scam? |
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You are probably right (I thought so too initially), but I am not sure where the correct watt usage is displayed.
For example, in the lower left it displays both GH and wattage as well and it reads 505W there, so I assumed 505/0.9=561
I think that W value is at the chip level, so there's lots of other losses between the PSU output and the chip input that aren't shown. The 4 wattage numbers up top are closer to the PSU, so add those up and /.86 gets my at-wall wattage. |
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RoadStress and Skye obviously need to have this explained like they are five: "When the HashFast Goose is put into a Bankruptcy Stew, eggs can no longer be given to Little Johnny Customer and only Mr. & Mrs. Lawyer get to eat." That's your defense, they wasted all their money so they shouldn't have been sued? LOL! They sold numerous batches of machines, but ran out of money after shipping part of 1 batch. Monumentally incompetent people running that business. |
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What is the wattage at the wall?
To me your setup looks like maybe 561w (for 1240GH!!!), this is like 0.45w/Gh-Incredible.
From the screenshot, the wattage at the board level is 152+153+153+173=631. At the wall it'll be more like 700-750 watts, depending on PSU. |
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I understand but these should really have all been collated here as it ends up being advertising for spondoolies on the forum that costs spondoolies but did not actually pay the forum. Unfortunately there is no merge function in this forum software which would be the ideal solution. Out of respect for the legendaries I've forgone the locking for now, but can I urge the reviewers themselves to lock their threads and refer back to this one once they have completed whatever they have to say instead then?
These reviews were planned more than a week ago, all out in the open. If you didn't want separate threads, etc. why didn't you say something before they were all posted? |
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Isn't it great HF's last dollars are being used to fund bickering lawyers, instead of building ASICs or paying refunds?  HF should have thought of that in January and paid those refunds. And February. And March. And April. HF caused this situation. Not the lawyers. |
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Thanks for that.. but by the time you log in, it already sent info!!
Only if there's an connection out to the Internet. It could be setup on a local net before connected to the Internet. |
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Not likiing the fact that as soon as I turn it on, it reports back to the company who and where I am.
Go to settings and turn off "Send device data to Spondoolies-tech.com (enabled by default)." |
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I just checked the ASIC stats page, on my underclocked unit at 0.6V, the difference between different ASIC chips is maximum 10 degrees
Yeah, they're great when underclocked. |
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The second set of chips get hit with warmer air, but not +40C hotter.
Ok, my intake is about 40c, and exhaust is about 80c, so the back chips are getting +20c air. It significant enough that they are downclocked 200 MHz as a result of the hot air from the front chips. |
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not really when you consider that pushing it for an extra 100GH will increase the overall power draw by 100W - you make the machine much louder and if unless you pay <$0.10/kwh its only amounts to a few extra dollars of profit. hence why a lot of people are running this 1.7TH/1.1kW device at 1.3TH/0.8kW
With better cooling you get better efficiency and lower noise. The problem with the SP20 is the unequal cooling of the chips. The second set of chips gets hit with air that's +40c hotter. Cool them with ambient air and you can lower their voltage and increase the efficiency. |
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not worth it - as it is most users are underclocking anyways, so putting in $50 worth of hiher quality heatsinks serves minimal benefit.
Let's go with $50. I'm pretty sure a better cooler would get at least 100 GH/s better performance. That's $12/mo extra. You make up the difference in cost in 4 months. Better performance, better efficiency, lower noise, longer life. At $50 it's an easy win. |
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That heat pipe setup is nice. The regular 5970 passes the air across both GPUs:  Given the design of SP20's board, such design is not suitable, but at least a heatpipe element can be mounted on each of them, and I think the cost will also be low if mass produced
Maybe, those who prefer lower noise could order upgraded heat pipe heat sink to their SP20, and those heat sink can be reused on future spondoolies products (compatible mounting on future miners)
A heat-piped SP20 would be great. |
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The size of Rockerbox chip is the same as GPU, and it is 28nm! Modern GPU typically employ a large heatpiped heat sink with lots of fins for silent operation, but that is aiming for at least 5 years life expectancy. When there are 4 such GPUs on one single board, no simple cooling solution except lots of air flow can dissipate those heat
It's more the layout that's the problem. The airflow passes over 1 chip and goes +40c, then it passes over the other chip and goes another +40c. The second chip is baked by the first chip. |
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I see why the sp20s are a better deal far more efficient but these things are far from fire and forget, i spent at least 2-3 hours baby sitting these boxes every day sometimes more and I'd be dammed if I want to spend that kind of time managing 5-10 lol
What in the world are you having to babysit? I torture my SP20, and it needs no care at all. |
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I'm still trying to understand why people are still buying miners , granted these prices are great but these machines will still have a hard time getting ROI.
Have you seen the difficulty lately? Obviously very few people are buying miners. The exchange rate crash has really slowed hardware purchases. |
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jftr, I cannot get the 1700: Temp Front / Back T,B
16 °C / 69,64 °C
Fan Speed
80
Start Voltage
0.68 / 0.68 / 0.68 / 0.68
Max Voltage
0.79
Max Watts
288 / 288 / 288 / 288
Mining Rate: 1652.08Ghs edit: just did that 1 hour ago.. lets see how it does overnight. Go to the ASIC Stats page. There you will see what is happening. |
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I received my review unit from Spondoolies on Monday. https://bitcointalk.org/index.php?topic=887807.0 As noted elsewhere, the unit was packed nicely. I appreciated the all-cardboard packaging which is fully recycled where I live. EnvironmentSince I'm cold blooded, I like my place warm. Really warm. My old BitFury miners also love the heat. Let's see how the SP20 fares. SetupMy Antec HCP-1300 Platinum 1300W PSU was ready and waiting. Most PSUs have a color coded mb connector wires, but this one has all black wires. I grabbed what I thought were the right two pins and plugged in my paperclip. Lights come on and the SP20 connects to the network. Must be the right two pins, right? I surf to myminer.io and see my machine up and running. I click on it and go to the Pools page and input my pool credentials. But the miner just won't mine. It's only using 4 watts and the supposedly loud fan isn't spinning. It finally occurs to me that the paperclip might be in the wrong pins. I switch to the right pins and this time the fan lets me know I found the right pins.  . TweakingMy BitFury miners are quite tweakable, but it's very difficult to do so (adding/removing cards, editing config files). But their modularity and tweakability allows me to maximize my hashrate per electrical circuit. While not modular, the SP20 allows very easy tweaking of voltage and power. Here are the results. All tests at 100% fan and 40c intake temperature. | Voltage | Wattage at wall | GH/s | | .65 | 710 | 1240 | | .70 | 1005 | 1468 | | .75 | 1110 | 1520 | | .79 | 1150 | 1534 |
Since my PSU is more than sufficient, the limiting factor in performance is the temps. The SP20's single exhaust fan just doesn't move enough air when in a hot room. Half the chips get hot air from the other half, like the old dual GPU 5970, so they get clocked down significantly. I wish there was also an intake fan on the other end for a nice push-pull configuration. This would also lower fan noise, although noise is not a concern for me. A half-size SP20 where the airflow goes over a single set of chips would also work well. SummaryThe SP20 excels in quality construction and ease of setup. Provide a good PSU and turn it on. It'll adjust itself for maximum performance, even in a hot room. Later when efficiency becomes more important, lowering the voltage will come in very handy. Recent price drops by Spondoolies make the SP20 one of the best buys in the market. |
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The first 10 Legendary rank forum members that will PM me with their address and contact details will receive each a SP20 for review, free of charge.
The only condition is to post the review, including pictures, under a new thread under Mining -> Hardware, within 3 days of receiving the hardware.
How about posting links to all the reviews in the initial announcement here? |
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