[ANN] Spondoolies-Tech - carrier grade, data center ready mining rigs - page 155.

philipma1957

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'The right to privacy matters'

Quote from: tlhIlwI on February 16, 2015, 09:16:54 PM

I once saw 1680GH on one of my four SP20s (set at 0.75v and 12c intake), but it isn't typical. It also does 1640s at 23c. It hardly breaks a sweat doing it (very little thermal limiting) so there is probably plenty of room to overclock that one, but I'm not interested due to the efficiency loss. That said, that same "overachieving" SP20 doesn't underclock anywhere near as efficiently as the others.

On two others I see closer to 1600-1620GH at 0.75v which I consider typical for a SP20. The last one I have is an "underachiever" which struggles to get 1550GH at 0.75v (with four different ASICs hitting thermal limits in the 630-640s). Although an underachiever at top speed, that one for some reason can underclock far better than the others (at 0.62v I see 0.48w/GH at the wall on that one-- something the others don't even come close to).

Lately I've been running them all at max 0.72v as the optimum profit point for my power rate. This morning's readings (low to high) were 1461-1500-1530-1546.

they are very much like gpus in that respect. 3 indentical gpu's will all have different sweet spots.

and all of they power a shit load of extra power when pushed to the max.

that said I have 9 sp20's.

I never expected them to do 1700 or 1600 I wanted them to do exactly what they do downclock to 1100gh and use .5 watts per gh. I hoped to use 2 per evga 1300 g2 psu as I have quite a few of them from my s-1's then s-3's.

I am happy with them .

tlhIlwI

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I once saw 1680GH on one of my four SP20s (set at 0.75v and 12c intake), but it isn't typical. It also does 1640s at 23c. It hardly breaks a sweat doing it (very little thermal limiting) so there is probably plenty of room to overclock that one, but I'm not interested due to the efficiency loss. That said, that same "overachieving" SP20 doesn't underclock anywhere near as efficiently as the others.

On two others I see closer to 1600-1620GH at 0.75v which I consider typical for a SP20. The last one I have is an "underachiever" which struggles to get 1550GH at 0.75v (with four different ASICs hitting thermal limits in the 630-640s). Although an underachiever at top speed, that one for some reason can underclock far better than the others (at 0.62v I see 0.48w/GH at the wall on that one-- something the others don't even come close to).

Lately I've been running them all at max 0.72v as the optimum profit point for my power rate. This morning's readings (low to high) were 1461-1500-1530-1546.

TheRealSteve

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FUN > ROI

Quote from: philipma1957 on February 16, 2015, 07:08:03 PM

My Kia Forte can reach 120 MPH downhill on a straight run in the daylight with an empty road.

I think you might need tail wind for that Wink

But yeah, the point is that if a manufacturer specifies N±X, assume you'll get N-X ... then be happy if it's anything above

philipma1957

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'The right to privacy matters'

Quote from: TheRealSteve on February 16, 2015, 06:12:41 PM

Quote from: tomsanders on February 16, 2015, 05:39:15 PM

If that is pretty normal for something that states its 1.7

'1.7±10%' unfortunately doesn't necessarily imply that the 1.7 is typical, it may only serve as the basis for the tolerance modifier that follows it. In theory a manufacturer could state "2.0±25%" and if every box delivered only runs at 1.55, they can just point to the fact that it falls within the specified range.

In this case I'm not sure where Spondoolies got the 1.7Th/s number anyway, unless they're overclocking the chips out of the box. The specs state that there's 8 RockerBox ASICs in there, and the RockerBox specs state 200Gh/s. 8x0.2Th/s = 1.6Th/s.

Might be interesting for people to post their actual hash rates (without over-/underclocking) and compile a graph, but you'd need more than a handful of people to get anything of significance out of that, and a lot of people are already underclocking them anyway to get a better power to hash rate ratio

My Kia Forte can reach 120 MPH downhill on a straight run in the daylight with an empty road.

The sp20e can do 1.71 with cold air (5c) directly entering the fan end if you reverse the fan and use a second fan to cool the pcie wires also you must vent that hot air out of the room.

Use a beast of a psu have good 16 gauge wires.

DevonMiner

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Activity: 471

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My average across x6 SP20s not under/overclocked = 1620 (early January batch) before I saw the light and underclocked to get value.

This point has been raised before with previous hardware .. SP30s and SP31s ... Sponds will always exaggerate a little bit Huh

But the SP10 has and always been rock solid at 1.4Ths+.

It's a SALES thing.

HerbPean

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Quote from: tomsanders on February 16, 2015, 05:43:21 PM

Quote from: HerbPean on February 16, 2015, 05:41:20 PM

Quote from: tomsanders on February 16, 2015, 05:39:15 PM

If that is pretty normal for something that states its 1.7 thats pretty crappy, i have even upgraded to the new firmware so a little disappointing

Mines are running at 1.55 TH with like 950 watt (guess around 1050watt at wall) with fan at 30% and 40%.

so no hope for hitting that 1.7 TH.. what temp is your unit running at?

23/60 and 23/65

As I said max watt is 250. I can't set them to 288 due to power supply limitation.

tomsanders

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Without playing around with any settings etc the system will go between 1550 and 1650

TheRealSteve

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FUN > ROI

Quote from: tomsanders on February 16, 2015, 05:39:15 PM

If that is pretty normal for something that states its 1.7

'1.7±10%' unfortunately doesn't necessarily imply that the 1.7 is typical, it may only serve as the basis for the tolerance modifier that follows it. In theory a manufacturer could state "2.0±25%" and if every box delivered only runs at 1.55, they can just point to the fact that it falls within the specified range.

In this case I'm not sure where Spondoolies got the 1.7Th/s number anyway, unless they're overclocking the chips out of the box. The specs state that there's 8 RockerBox ASICs in there, and the RockerBox specs state 200Gh/s. 8x0.2Th/s = 1.6Th/s.

Might be interesting for people to post their actual hash rates (without over-/underclocking) and compile a graph, but you'd need more than a handful of people to get anything of significance out of that, and a lot of people are already underclocking them anyway to get a better power to hash rate ratio

tomsanders

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Quote from: HerbPean on February 16, 2015, 05:41:20 PM

Quote from: tomsanders on February 16, 2015, 05:39:15 PM

If that is pretty normal for something that states its 1.7 thats pretty crappy, i have even upgraded to the new firmware so a little disappointing

Mines are running at 1.55 TH with like 950 watt (guess around 1050watt at wall) with fan at 30% and 40%.

so no hope for hitting that 1.7 TH.. what temp is your unit running at?

takagari

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Quote from: tomsanders on February 16, 2015, 05:39:15 PM

If that is pretty normal for something that states its 1.7 thats pretty crappy, i have even upgraded to the new firmware so a little disappointing

Yeah I was really upset to hear that, sort of fake advertising..

HerbPean

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Quote from: tomsanders on February 16, 2015, 05:39:15 PM

If that is pretty normal for something that states its 1.7 thats pretty crappy, i have even upgraded to the new firmware so a little disappointing

Mines are running at 1.55 TH with like 950 watt (guess around 1050watt at wall) with fan at 30% and 40%.

tomsanders

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If that is pretty normal for something that states its 1.7 thats pretty crappy, i have even upgraded to the new firmware so a little disappointing

HerbPean

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Any official release of firmware 2.6.14 ?

Syke

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Quote from: tomsanders on February 16, 2015, 05:01:39 PM

Hey

Anyone know the best settings for a SP20, Im only getting 1.6th... system is cool ( 23 at the front ) tried a vast amount of settings but never seem to get it to stay at 1.7 or more..

Any help guys?

That's pretty typical. Very few people can get 1.7.

tomsanders

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Activity: 103

Merit: 10

Hey

Anyone know the best settings for a SP20, Im only getting 1.6th... system is cool ( 23 at the front ) tried a vast amount of settings but never seem to get it to stay at 1.7 or more..

Any help guys?

Biffa

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Quote from: Biodom on February 16, 2015, 11:29:36 AM

Does someone has good settings for SP30 to lower its power use.
I remember that it was possible to do 2.4kw and 3.9-4Th and/or 1.9kw and 3.6 TH (I am mostly interested in these settings).
Or is does it mimic the SP20?

I'd go slow, set:

Startup Voltage: 0.6
Voltage Limit: 0.65

Then just adust voltage limit.

Biodom

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Does someone has good settings for SP30 to lower its power use.
I remember that it was possible to do 2.4kw and 3.9-4Th and/or 1.9kw and 3.6 TH (I am mostly interested in these settings).
Or is does it mimic the SP20?

mdude77

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