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Topic: [Review] Spondoolies SP20 review - A Green miner with a Loud fan - page 4. (Read 20980 times)

sr. member
Activity: 434
Merit: 250
someone said they had free shipping? I even rmemeber them using this as one of there reasons to order spondoolies and not bitmain...Huh? Huh

they are trying to charge me for shipping or am i missing something?
Order through RoadStress GB link.

not long til it's over!
get in quick!
https://bitcointalksearch.org/topic/m.9924866
donator
Activity: 1414
Merit: 1051
Spondoolies, Beam & DAGlabs
someone said they had free shipping? I even rmemeber them using this as one of there reasons to order spondoolies and not bitmain...Huh? Huh

they are trying to charge me for shipping or am i missing something?
Order through RoadStress GB link.
legendary
Activity: 3892
Merit: 4331
someone said they had free shipping? I even rmemeber them using this as one of there reasons to order spondoolies and not bitmain...Huh? Huh

they are trying to charge me for shipping or am i missing something?

order on ebay with free shipping...
sr. member
Activity: 366
Merit: 250
someone said they had free shipping? I even rmemeber them using this as one of there reasons to order spondoolies and not bitmain...Huh? Huh

they are trying to charge me for shipping or am i missing something?
legendary
Activity: 3892
Merit: 4331
sounds like the S5 has the SP20 beat for use at ~1250GH/630W or ~0.51w/GH

well, very close, but S5 has this crazy fan-my amazon fan supply for mod (got both Noctua and Silverstone) will be here only on Friday-I even had to get the prime trial which I never wanted in order to get it faster..
legendary
Activity: 2128
Merit: 1005
ASIC Wannabe
sounds like the S5 has the SP20 beat for use at ~1250GH/630W or ~0.51w/GH
legendary
Activity: 1988
Merit: 1012
Beyond Imagination
Too bad Sad 0.385W/GH would have been really nice.

That will be the dream of course. The efficiency is directly correlated to voltage, however the stable setting is around 0.6V, below that you might experience stability issues

I'm using 80+ bronze PSUs, if you run a 90+ platinum PSU, the efficiency can increase a bit
hero member
Activity: 560
Merit: 504
Too bad Sad 0.385W/GH would have been really nice.
legendary
Activity: 1988
Merit: 1012
Beyond Imagination
Another observation: Too cold temperature will reduce the performance over time

For past several days, my outdoor temp dropped below -10c, and this affected the miner near the window, ASIC frequency keeps dropping over several days (together with the power usage), now I put in a slower GT1850 fan, and partly close the window to keep the intake temp around 10c degree, it has been stable at 970GH since then
donator
Activity: 1414
Merit: 1051
Spondoolies, Beam & DAGlabs
A new record: Ambient temp 5c degree, 0.6/0.605 setting, 897GH, consumes 345W at wall, means 0.385W/GH efficiency

At very low temp, the normal 0.59/0.6V setting can not start all the loops, must raise it to 0.6/0.605V to get all the loops running, but the result is quite respectable

http://photo.mystisland.org/sp20/sp20_lowest.png

Impressive. Got a screenshot of the ASIC Status page?



But something is wrong here, with 345W, the webpage shows 897GH but mining pools shows constantly 700GH, I don't know if it is the latest firmware caused this problem, will restart it and try again

Edit: Something went wrong with previous settings, after several test, it seems 440W on wall for 930GH can be stable, still 0.47W/GH
0.47 J/GH is aligned with our undervolt results as well for 0.6V
There are differences between different batches of RockerBoxes, the last ones are more efficient.
legendary
Activity: 1988
Merit: 1012
Beyond Imagination
A new record: Ambient temp 5c degree, 0.6/0.605 setting, 897GH, consumes 345W at wall, means 0.385W/GH efficiency

At very low temp, the normal 0.59/0.6V setting can not start all the loops, must raise it to 0.6/0.605V to get all the loops running, but the result is quite respectable

http://photo.mystisland.org/sp20/sp20_lowest.png

Impressive. Got a screenshot of the ASIC Status page?



But something is wrong here, with 345W, the webpage shows 897GH but mining pools shows constantly 700GH, I don't know if it is the latest firmware caused this problem, will restart it and try again

Edit: Something went wrong with previous settings, after several test, it seems 440W on wall for 930GH can be stable, still 0.47W/GH
donator
Activity: 1414
Merit: 1051
Spondoolies, Beam & DAGlabs
A new record: Ambient temp 5c degree, 0.6/0.605 setting, 897GH, consumes 345W at wall, means 0.385W/GH efficiency

At very low temp, the normal 0.59/0.6V setting can not start all the loops, must raise it to 0.6/0.605V to get all the loops running, but the result is quite respectable

http://photo.mystisland.org/sp20/sp20_lowest.png

Impressive. Got a screenshot of the ASIC Status page?
Indeed, impressive.
legendary
Activity: 3878
Merit: 1193
A new record: Ambient temp 5c degree, 0.6/0.605 setting, 897GH, consumes 345W at wall, means 0.385W/GH efficiency

At very low temp, the normal 0.59/0.6V setting can not start all the loops, must raise it to 0.6/0.605V to get all the loops running, but the result is quite respectable

http://photo.mystisland.org/sp20/sp20_lowest.png

Impressive. Got a screenshot of the ASIC Status page?
legendary
Activity: 1988
Merit: 1012
Beyond Imagination
A new record: Ambient temp 5c degree, 0.6/0.605 setting, 897GH, consumes 345W at wall, means 0.385W/GH efficiency

At very low temp, the normal 0.59/0.6V setting can not start all the loops, must raise it to 0.6/0.605V to get all the loops running, but the result is quite respectable

legendary
Activity: 1988
Merit: 1012
Beyond Imagination
Turns out I still have to pay 60 euro for the import tax and some extra charge to DHL  Undecided

The PWM adapter did not work at first, since the wire on the stock fan socket is different: The power on that socket is negative 12V. In order to run a PWM fan, you have to switch the position of the power and ground line on the fan connector, which makes the connector wiring color looks different than normal PWM connectors. This first photo shows the difference



The Everflow fan on this photo has 9 blades, but it is actually noisier than delta fan due to it is only 28mm in depth. With a delta AFC1212DE installed, at 20% speed, the DC temp never goes above 60c degree, which is my comfortable zone. The noise goes up to 54db at one meter distance, still acceptable, and a great improvement over stock fan's 68 db at 20% speed
sr. member
Activity: 434
Merit: 250
I would not leave such a powerfull fan open, it can seriously injure a finger.

While it could hurt, it is an exhaust fan. Far less dangerous than an intake fan.

beat me to it.. the blades point inwards... i'd still make sure it was away from anywhere that the cat could get nosey about it.
legendary
Activity: 3878
Merit: 1193
I would not leave such a powerfull fan open, it can seriously injure a finger.

While it could hurt, it is an exhaust fan. Far less dangerous than an intake fan.
legendary
Activity: 1379
Merit: 1003
nec sine labore

 While I don't feel any significant resistance if I hang a wire grill at the same place

I would not leave such a powerfull fan open, it can seriously injure a finger.

spiccioli
legendary
Activity: 3234
Merit: 1220
Grill down!  Grin  I hung the cutted honey comb grill piece in front of the exhaust fan, and it is blown way by a quite large force, so remove it will improve the airflow for sure. And the hiss noise is gone

I can fit a fan wire grill to increase safety, but not a big deal, currently just leave it open (easy to clean the fan from dust Grin)

I did think of that, it harks back to my watercooling days, but effect on resale value turned me off it.
legendary
Activity: 1988
Merit: 1012
Beyond Imagination
Grill down!  Grin  I hung the cutted honey comb grill piece in front of the exhaust fan, and it is blown way by a quite large force, so remove it will improve the airflow for sure. And the hiss noise is gone

http://photo.mystisland.org/sp20/sp20_26.jpg

I can fit a fan wire grill to increase safety, but not a big deal, currently just leave it open (easy to clean the fan from dust Grin)

this is really interesting... does it improve the airflow at all? is there a way you can measure it?

There are reviews analyzed different types of grille and some of them said that a honey comb grill will give 10% less airflow. I can feel that honey comb grill obviously give resistance to air flow. While I don't feel any significant resistance if I hang a wire grill at the same place
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