(hacked) S7LN Group Buy

[philipma1957]

Well I've left her running overnight and the temps haven't changed still 45-46c. Is this within the "hot" range or should I lower the fans a bit and raise the temp?

The only reason I'm asking is that she's pulling 473w @ the wall so about 430w for the unit at 2.02Th.

And I must say she's fooking quiet   I mean I had three rboxes in the same location and they were quieter than two S3's and could happily live with those but this is AMAZING. Sounds like the traffic noise outside but alot lower in pitch.


My little mining hobby.-

That s-7 has traveled quite a bit China > Missouri > New Jersey > New York > UK

60c is safe so you could drop fans from 20 to 18%

I got 442 watts at the kwatt meter  you are getting 473watts

so if both meters suck for accuracy real watts could be in the middle.

HagssFin's also did 442 on my meter  so lets see what he gets on his in finland. He should have his soon.

@ fin your unit cleared customs in finland

[gt_addict]

Yea I'm thinking they really suck for accuracy lol. It's reads fairly stable but doesn't matter. I'm just really pleased she's so damn quiet. It's a hard thing to judge when reading comments as everyone's tolerance is different.

So at 60c she will definitely be in the "hot" range for the voltage?

[philipma1957]

Yea I'm thinking they really suck for accuracy lol. It's reads fairly stable but doesn't matter. I'm just really pleased she's so damn quiet. It's a hard thing to judge when reading comments as everyone's tolerance is different.

So at 60c she will definitely be in the "hot" range for the voltage?

60c is conservative for the board temps.

many  s-7's got into the mid 60's even low 70's and ran fine for more then 8 or 9 months. when they were not down volted

but I rather give 60c since it is conservative.

[HagssFIN]

Yeah, I'll soon have my one mining  
I paid the VAT 24% and it's on the way to the west coast.
I'll measure the consumption with my clamp meter and test cable -setup soon as I have my hands on it.

[philipma1957]

Yea I'm thinking they really suck for accuracy lol. It's reads fairly stable but doesn't matter. I'm just really pleased she's so damn quiet. It's a hard thing to judge when reading comments as everyone's tolerance is different.

So at 60c she will definitely be in the "hot" range for the voltage?

Yes, that would be hot range.

If you haven't already set the fans to manual, I would recommend setting them to 15%.  This should raise your temps a bit and make your hackedLN even quieter ( I think the PSU fan is louder than the miner fans at 15%).  Also may slightly lower your power consumption.  

I just dropped mine to 18% really quiet.

[Swoosher76]

@sidehack

Any thoughts on another round?

Thanks

[sidehack]

I've got one on my shelf (ordered an extra) that's probably decent enough to sell. I forget the numbers exactly; it wasn't super so about 450W at 2TH. If someone wants me to work one up, you can always just have it shipped here and I'll make it as stably efficient as possible for a given hashrate and reship for a nominal fee.

I'm going to work on a couple of proper 3-board S7 machines in the next couple days, probably optimized for 600MHz or so and have them for sale - 4TH at between 900 and 1000W is what I'm shooting for if anyone's interested. I might shoot for 550MHz and get 3.7TH around 800W.

[gt_addict]

Sidehack, Im tempted but just cant afford the electricity for a second "big" miner (my electricity cost is 0.13gbp kwh). My one is running beautifully though, amazingly quiet. Thanks again.

On a different note, ive se the fans to 15% to raise the temp uptp 60c-ish and the fan speed is still reading 1680 for both fans (same as the 20% setting), I assume this is the lowest they will go to?

[IITravel01]

Looking forward to reading on your work on the S7.  What is the the default hot/cold voltage settings on the S7?

[sidehack]

I don't know how to interpret that question. All my "work on the S7" is the same as my work on the S7LN, which is all already laid out in the S7 hacking thread in Hardware.

[IITravel01]

That's what I was asking, if the default hot/cold volt. setting was the same 710/680 for the S7 as it is for the S7-LN.

Thanks,

[sidehack]

The question does not make sense. There is no hot/cold default for either; the hot/cold switchup is something I implemented specifically to have a higher voltage for startup stability at low running voltages. "Default hot/cold" does not exist.

The default voltage for an S7 is higher than the S7LN since it's designed to run at higher frequency. At least all the ones I've played with.

[IITravel01]

OK, so the default of the S7-LN is 680 then, but not the same on the S7?  I was going by your chart where you state that the 710/680 is the "approx. stock" setting.  I was trying to figure out if the same chart would apply to the S7 as it does with the S7-LN in that the boards/blades are the same except on the LN they've switched larger heatsinks on them but no difference in any software/firmware (outside of the controller board that lies on top with the NIC port attached).

[sidehack]

Sounds like all of this question should be addressed (or likely has already been addressed) in the hardware thrad.

[gt_addict]

So came home after work today to see that the power meter was only reading 404w at the wall. When I left this morning it was reading 590w (s7-ln and a raspi running two gekkos at 225m on the same plug socket).

One temp reading was 38 and the other 60. Ive rebooted it and will see what happens. Just wondered if anyone else has had a similar experience?

[HerbPean]

So came home after work today to see that the power meter was only reading 404w at the wall. When I left this morning it was reading 590w (s7-ln and a raspi running two gekkos at 225m on the same plug socket).

One temp reading was 38 and the other 60. Ive rebooted it and will see what happens. Just wondered if anyone else has had a similar experience?

I had an S7 F1 board doing the same thing ... went down. Rebooted and it was hashing again.

[gt_addict]

Mine was still hashing fine. Registering on pools and GUI said the correct hashrate. Just went a bit funny. Rebooted and all is fine again using 590w in total.

[philipma1957]

mine just runs


mmpool.org


Rank   Id   DGM Estimate   PPS   Shares   Rate (MHash/s)
1   0dfd19ac   5.30968299   0.47333532   48,188,418,755   0
2   c03a6b93   2.99337209   0.31473990   33,354,961,214   0
3   540f7f8c   2.98924310   0.19911573   26,170,348,147   0


4   c932f3ed   1.68813834   0.14595275   16,179,046,452   2,064,639  this is mine


5   dad84f7a   0.77519573   0.08385544   8,971,649,617   3,473,198

[HagssFIN]

Damn! My Super Flower Golden Green 500W PSU just broke today  
The S7-LN is fine though, I tried running it with another PSU just fine  
Some idle time now though before I can get it running 24/7 again with a new PSU.

[gt_addict]

Think I got my calculations wrong before. Its pulling approximately 465w at the wall at 450M. After factoring in the efficiency of the EVGA 850 P2 is using 437w. Very nice indeed