[CLOSED] ASICMiner Prisma 1.4th/s - 1.47 BTC

[philipma1957]

Hey CrazyGuy how is it going on that image for the RPI? I know you said you were working on it the other day just curious as to how you're making out on it. Also Philipma1957 just wondering if you made that new wire yet and if you did, do you have any new numbers yet? I am just waiting for your numbers before I buy the 12/3 or the 10/3. Would you also happen to know where I could pick up more wires for the evga 1300G2 I got from you? I found them but they are crazy expensive. Im sure someone on this forum makes them, I have just yet to find anyone making/selling them. Thanks

 just a little bit more time.

 the post office is dropping them off today.

I think the 12 gauge will be good enough.

 it does much better then the stock 14 ga. 

the 14 ga rates for

the 12 ga rates for 1875 watts and the evga 1300 pulls 1250   so it runs cool.

I will post more info on this tonight.  I will have 2 new cords built and test them.

I found a great way to get a true number on the k-watt meters  and will post.

[1713306015]

1713306015

[1713306015]

1713306015

[CrazyGuy]

The RPI image should be good to go, I'm just waiting on my usb-uart adapters so I can test it out.

Prismas are on the move again and I hope to have batch 2 and some of batch 3 very soon.

[mrpark]

So the stock EVGA 1300 G2 won't work unless we change the stock cord? I am going to try to use a LEPA 1600w which is 15 amp (180W) per PCI-connector and it has 8 of them. (30 per socket x 4 rails (total of 6 rails on the PS) 12v3-12v6. Is it enough power for the Prisma? I am thinking yes, because 12v x 30amps = 360w. Anyway, I will let you know....

I run two S3s which are 340w on each of the 3 socket on the Lepa G1200, so I think I am good to go here.  (I run a total of 6 S3's on each Lepa 1200W)

[ferncreekminer]

So the stock EVGA 1300 G2 won't work unless we change the stock cord? I am going to try to use a LEPA 1600w which is 15 amp (180W) per PCI-connector and it has 8 of them. (30 per socket x 4 rails (total of 6 rails on the PS) 12v3-12v6. Is it enough power for the Prisma? I am thinking yes, because 12v x 30amps = 360w. Anyway, I will let you know....

I run two S3s which are 340 w on each of the 3 socket on the Lepa G1200, so I think I am good to go here.

http://i62.photobucket.com/albums/h92/network650/home_zpsfffdc8b4.png

2 x EVGA G2 750W PSUs work great & are quite a bit cheaper than going a 1 psu route...

[mrpark]

I bought this 1600W on ebay used, it was $140+ SH (I made best offer). He has more of them, mine you I haven't tested the Prisma yet but will very soon.

http://www.ebay.com/itm/LEPA-G1600-MA-1600W-Power-Supply-PSU-Fully-Modular-/281482686593?pt=PCA_UPS&hash=item4189acf081


I use this power supply a lot at work, powering four EVGA GTX 980 SC for CUDA 24x7 operations. Currently working on getting an 7-8 GPU box

I also have Kill-a-Watt so I can compare the Watts at the wall, it would be good to compare it against a 2 PSU setup.

So the stock EVGA 1300 G2 won't work unless we change the stock cord? I am going to try to use a LEPA 1600w which is 15 amp (180W) per PCI-connector and it has 8 of them. (30 per socket x 4 rails (total of 6 rails on the PS) 12v3-12v6. Is it enough power for the Prisma? I am thinking yes, because 12v x 30amps = 360w. Anyway, I will let you know....

I run two S3s which are 340 w on each of the 3 socket on the Lepa G1200, so I think I am good to go here.

2 x EVGA G2 750W PSUs work great & are quite a bit cheaper than going a 1 psu route...

[CrazyGuy]

So the stock EVGA 1300 G2 won't work unless we change the stock cord? I am going to try to use a LEPA 1600w which is 15 amp (180W) per PCI-connector and it has 8 of them. (30 per socket x 4 rails (total of 6 rails on the PS) 12v3-12v6. Is it enough power for the Prisma? I am thinking yes, because 12v x 30amps = 360w. Anyway, I will let you know....

I run two S3s which are 340w on each of the 3 socket on the Lepa G1200, so I think I am good to go here.  (I run a total of 6 S3's on each Lepa 1200W)

I believe GrapeApe is using the EVGA 1300 G2 without issue. You just need to split the multi connector pcie cables over multiple blades so that each cable is carrying an equal load. At 1200 watts, that would put around 200 watts on each cable. In this configuration, each blade will have one single connector pcie cable and 1 half of a  a dual connector pcie cable. This will only work on PSUs with a shared rail on the pcie output.

[mrpark]

OK, good to know. And hypothetically, if I used this G1600, how many watts would be on each cable? 1200W/8 cables = 150 per cable in that case? Or is it not that cut and dry?

So the stock EVGA 1300 G2 won't work unless we change the stock cord? I am going to try to use a LEPA 1600w which is 15 amp (180W) per PCI-connector and it has 8 of them. (30 per socket x 4 rails (total of 6 rails on the PS) 12v3-12v6. Is it enough power for the Prisma? I am thinking yes, because 12v x 30amps = 360w. Anyway, I will let you know....

I run two S3s which are 340w on each of the 3 socket on the Lepa G1200, so I think I am good to go here.  (I run a total of 6 S3's on each Lepa 1200W)

I believe GrapeApe is using the EVGA 1300 G2 without issue. You just need to split the multi connector pcie cables over multiple blades so that each cable is carrying an equal load. At 1200 watts, that would put around 200 watts on each cable. In this configuration, each blade will have one single connector pcie cable and 1 half of a  a dual connector pcie cable. This will only work on PSUs with a shared rail on the pcie output.

[GrapeApe]

I believe GrapeApe is using the EVGA 1300 G2 without issue. You just need to split the multi connector pcie cables over multiple blades so that each cable is carrying an equal load. At 1200 watts, that would put around 200 watts on each cable. In this configuration, each blade will have one single connector pcie cable and 1 half of a  a dual connector pcie cable. This will only work on PSUs with a shared rail on the pcie output.

Correct I am using 1 EVGA 1300 G2 per Prisma. It has 6 PCIe cables 2 of which has double connectors. I am using the stock power cord with no issues. Phillipma1957 is suggesting making it a bit more efficient with a larger power cord.

[GrapeApe]

Hey Phillipma1957 I got the fans in. I have the push/pull effect now using the 2 fans and man things are quieter. The fan controller I'm using is the NZXT Sentry Mix2 with 6 20 30 watt channels.
http://www.newegg.com/Product/Product.aspx?Item=N82E16811992012

[philipma1957]

Hey Phillipma1957 I got the fans in. I have the push/pull effect now using the 2 fans and man things are quieter. The fan controller I'm using is the NZXT Sentry Mix2 with 6 20 watt channels.
http://www.newegg.com/Product/Product.aspx?Item=N82E16811992012

nice .  

as for my 10g a test the f'ing post office dropped the new plugs off but the wire comes tomorrow.


  I did measure meant and the 14ga stock uses 25-50 more watts running 3 s-3's  vs a 12 ga cord

makes sense as the 14g a cords rate to 1400 watts or so and the 12 ga rate to 1800 watts.

now if it is cold in your area and you open the window behind those units you can run them at least 10 or 20 higher freq and still get 98%.

see the test bench with 2 asiminer tubes 2 r-boxes and 3 grid seed blades window open lower fan pulled hot air out

 upper fan blows cold air in.  when it got to 50F outside the units cooled off and ran much better.

[mrpark]

May I ask which fans you used?

Hey Phillipma1957 I got the fans in. I have the push/pull effect now using the 2 fans and man things are quieter. The fan controller I'm using is the NZXT Sentry Mix2 with 6 20 watt channels.
http://www.newegg.com/Product/Product.aspx?Item=N82E16811992012

[GrapeApe]

May I ask which fans you used?

The ones Phillipma1957 suggested. I picked them up from newegg though.

http://www.newegg.com/Product/Product.aspx?Item=N82E16835220056

http://www.amazon.com/gp/product/B00A460TK6/ref=oh_aui_detailpage_o04_s00?ie=UTF8&psc=1

Hey Philip it's still in the mid 80's here. You can't see it in the image but there is a window A/C directly behind those prismas blowing right into the intake fans.

[area3121]

@ GrapeApe

actual temp? and impovement temp before and after?

[GrapeApe]

@ GrapeApe

actual temp? and impovement temp before and after?

No temps sorry. I wasn't trying to cool it down I was trying to make it quieter. Like I said I have a window A/C blowing right into them so my temps won't be normal anyway.

[mrpark]

Where I put my miners, I have a bunch of S3s, normally the temp in that room is 90F up to 99F, it sound very hot but S3's work no problem in this environment. I am thinking it is not going to be the case for the Prisma, I suppose even at 85 F your fans are going to be running at full blast and 80db. Not even sure if I Prisma would work in 90F.

In other big dragon miners, I had very large loud fans, blowing 3000 RPM with tons of air pressure. Also runs great in 90F. But using Corsair fans, the temps go way up, over 60c, so the loud fans are needed. Even in 90F the cards run at 50-55c with the fans on full blast.

I believe the fans that Philip mention are much better than the Corsair, they look like they also can move some air. I tried and failed with many different kinds of PC fans, but those Silverstone tech ones look good. I have a Silverstone Tech 1500w power supply that works very well.

Instead of AC, I have a round duct fan attached to a tube. Maybe it doesn't really remove enough heat from the room. I use this with a 110v controller.

http://www.amazon.com/gp/product/B005KMTYFK/ref=oh_aui_search_detailpage?ie=UTF8&psc=1

[Xtra7973]

PM and email sent, sorry if I messed up at all, first group buy and im learning. Thanks CrazyGuy

[philipma1957]

All wires and cables have arrived. I built a 10 gauge 10 foot long.  I have 2 quality oem cables 12 gauge and 14 gauge.

All are 10 feet long.

When tested with a k-watt meter

10 Gauge cold 1110 watts

12 gauge cold 1117 watts

14 gauge cold  1122 watts.

cold numbers are not too much different.

but 1 hour in

10 gauge = 1132 watts

i will need time to measure this.

i will do a 1 hour  - a 12 hour  - a 2 day.



I have photos will best soon.

[mrpark]

it looks like I won't be using the Lepa 1600, the ebay ad is a scam. While the photo shows the right photo, the guy is selling them with the cables from the 1200w Lepa. I'm no dummy so he is going to have to pay to ship it back, ebay has a new policy the at the seller has to eat the cost.


I will use stock evga 1300. I am taking my time with the miner, I found some Styrofoam packing in the tube and on one of the chips, so good to check it over really well before starting it up.

[CrazyGuy]

it looks like I won't be using the Lepa 1600, the ebay ad is a scam. While the photo shows the right photo, the guy is selling them with the cables from the 1200w Lepa. I'm no dummy so he is going to have to pay to ship it back, ebay has a new policy the at the seller has to eat the cost.


I will use stock evga 1300. I am taking my time with the miner, I found some Styrofoam packing in the tube and on one of the chips, so good to check it over really well before starting it up.

I will say that I have a 1300w Lepa and it is one of the worst power supplies I've ever owned. It trips with almost any miner I've tried to use it with.

[CrazyGuy]

All remaining batches should be arriving next week. ASICMiner has asked me to hold off on placing a batch 6 order this weekend while they replenish stock. Any batch 6 orders to this point will be moved to batch 5, which should arrive next week. If you haven't sent me your label, please do so now.

I will have spare units for sale on ASICPuppy.net next week.