ANTMINER S7 is available at bitmaintech.com with 4.86TH/s, 0.25J/GH

[VirosaGITS]

Batch 9 better be $1,200/3.3BTC or less because we just hit 600,000Ths. We got a 10%+ diff jump coming in under 4 days. The next diff jump after that looks to be between 10%-20% at this rate. That will be in less than 20 days. Remember that this all compounds on the last diff jumps, so 10% now is equal to what a 15% raise would have been two months ago. It looks like we might be in for another hashrate armageddon.

That said, I just got my "sold out" batch 7 units in. If you look at the jump in the last 2-3 days I'm pretty sure its the fact that we all got the last few batches early this week and wasted no time getting them all online.

I think batch 8 might ship soon too so that will be nice for those who buy them. For the rest of us it will suck because it will mean another jump even sooner than expected. Avalon is shipping another batch right now too so...yeah...I'm a bit worried if both companies keep shipping like this. I think they will. 

One funny thing is that they are ruining their own farms profitability. I guess it doesn't matter as much to the  farms because they get their gear at cost (like $300 per S7 I bet for parts). Its just sad to see this race to the bottom. I was hoping to actually make some money on these, not just hope to break even. 

They dont hurt themselves, they get to sell this stuff at 1800-1500 while people are trampling all over to get miners wherever they can because the BTC price nearly doubled.

By the time they ship those late batch, the diff could be 20-30% from now, if it is, they win even more. If the BTC price drop, they already made their money.
Mean while they have tons of money to roll more hardware and dev the next batch, assuming they dont already have S9-like stuff for themselves.

I guess they dont even need to do that, considering they get super cheap electricity.

[micairvas]

One question guys. I Planing to buy Antminer S7 - batch8. I dont know why is this batch overclocked on 700m and hiting "only" 4.7Ths? Previous batchs hit this hashrate with only 600m-625m. Is this some bad batch or what, I suppose b8 unit will heat lot more than previous.

[RichBC]

One question guys. I Planing to buy Antminer S7 - batch8. I dont know why is this batch overclocked on 700m and hiting "only" 4.7Ths? Previous batchs hit this hashrate with only 600m-625m. Is this some bad batch or what, I suppose b8 unit will heat lot more than previous.

It's not overclocked if anything the other batches are underclocked relative to the Core Voltage. Reason it's 4.7THs is that like Batch 6 it has 135 v 162 Chips. However we have no feedback on exactly what the changes to the Chip Power supply or exact efficiency in Batches 6 & 8 yet?


Rich

[goxed]

Anyone OCed his Batch 7 to 650 Mhz ? is it performing well ??

Playing around with different clock freqs. Here's a snapshot from my current test.

Looking at the RPM's on those fans, you must have them set around 30% manual.  It looks like you need to bring up the fans to at least 80% to get those HW errors and temps down.

I am in Switz. There's a communal law on the amount of noise one can generate esp. at night. Also the miner pulls cold air from the outside. Have to live with these temps.

Here's the perf with 687MHz clock speed.

[mavericklm]

Nice speed! any chance of measuring the power consumption?

thx!

[goxed]

Peek inside.





<- looks like the TEMP sensor

[goxed]

[vortexz]

Anyone OCed his Batch 7 to 650 Mhz ? is it performing well ??

Playing around with different clock freqs. Here's a snapshot from my current test.

Looking at the RPM's on those fans, you must have them set around 30% manual.  It looks like you need to bring up the fans to at least 80% to get those HW errors and temps down.

I am in Switz. There's a communal law on the amount of noise one can generate esp. at night. Also the miner pulls cold air from the outside. Have to live with these temps.

Here's the perf with 687MHz clock speed.

nice OC you have there, 5.44 TH/s

[Prelude]

Anyone OCed his Batch 7 to 650 Mhz ? is it performing well ??

Playing around with different clock freqs. Here's a snapshot from my current test.

Looking at the RPM's on those fans, you must have them set around 30% manual.  It looks like you need to bring up the fans to at least 80% to get those HW errors and temps down.

I am in Switz. There's a communal law on the amount of noise one can generate esp. at night. Also the miner pulls cold air from the outside. Have to live with these temps.

Here's the perf with 687MHz clock speed.

Very nice overclock! What power supply are you using, and what voltage are you measuring at the hash boards? I can't seem to get my units happy over 662.

[goxed]

Anyone OCed his Batch 7 to 650 Mhz ? is it performing well ??

Playing around with different clock freqs. Here's a snapshot from my current test.

Looking at the RPM's on those fans, you must have them set around 30% manual.  It looks like you need to bring up the fans to at least 80% to get those HW errors and temps down.

I am in Switz. There's a communal law on the amount of noise one can generate esp. at night. Also the miner pulls cold air from the outside. Have to live with these temps.

Here's the perf with 687MHz clock speed.

Very nice overclock! What power supply are you using, and what voltage are you measuring at the hash boards? I can't seem to get my units happy over 662.

I am using the Bitmain PSU. Will measure voltage and power soon.

[jfbbtc]

Hello all,  I have a batch 6 machine which I found necessary to hard reset (don't ask).  Prior to that it had been Hashing along at 4.03 as expected with no problems.  After the reset I watched it visually until the light and sound show indicated it was hashing ok.  When I went to the computer to look I found it was hashing at 4.7 Terahashes/sec, temps were ok, error rate 0.0001.  The freq was 700.  Do I have a batch 8 in disguise?  Could it have failed some batch 8 quality check and just had the freq turned down to 600 rather than loading software with default 600?  Anyone else with a batch 6 had this experience?  J. Balsley

[RichBC]

Hello all,  I have a batch 6 machine which I found necessary to hard reset (don't ask).  Prior to that it had been Hashing along at 4.03 as expected with no problems.  After the reset I watched it visually until the light and sound show indicated it was hashing ok.  When I went to the computer to look I found it was hashing at 4.7 Terahashes/sec, temps were ok, error rate 0.0001.  The freq was 700.  Do I have a batch 8 in disguise?  Could it have failed some batch 8 quality check and just had the freq turned down to 600 rather than loading software with default 600?  Anyone else with a batch 6 had this experience?  J. Balsley

So when you go to Miner Configuration - Advanced Settings.  What Frequency is it set to and what is shown as the Default Frequency?

Rich

[jfbbtc]

After the reset it was set at 700.  None of the frequencies were marked as default.  JB

[RichBC]

After the reset it was set at 700.  None of the frequencies were marked as default.  JB

Well that is interesting there has always in my experince been a frequency that has been marked as default, will be interesting to see what other people have? Good news is that if you have a Batch 6 that has a low HW error rate at 700MHz then that is vey nice.  


Rich

[clgrissom3]

After the reset it was set at 700.  None of the frequencies were marked as default.  JB

Well that is interesting there has always in my experince been a frequency that has been marked as default, will be interesting to see what other people have? Good news is that if you have a Batch 6 that has a low HW error rate at 700MHz then that is vey nice.  


Rich

I have 4 Batch 1's and none of them have a default frequency marked.  They all came set at 600 and they all perform well at ~4820-4860 with 2 at HW ~0.0008% and 2 at HW ~0.0050%.

[RichBC]

After the reset it was set at 700.  None of the frequencies were marked as default.  JB

Well that is interesting there has always in my experince been a frequency that has been marked as default, will be interesting to see what other people have? Good news is that if you have a Batch 6 that has a low HW error rate at 700MHz then that is vey nice.  


Rich

I have 4 Batch 1's and none of them have a default frequency marked.  They all came set at 600 and they all perform well at ~4820-4860 with 2 at HW ~0.0008% and 2 at HW ~0.0050%.

Well in that case looks like Bitmain changed the norm of having a Frequency marked as default, but looks like it is set to a frequency when delivered & does default to one when reset? Perhaps not surprising when you look at the number of flavours we have had so far? Will be interesting to hear if this is the case for all Batches and the upgrades to the firmware?

Rich

[mindtrip]

One question guys. I Planing to buy Antminer S7 - batch8. I dont know why is this batch overclocked on 700m and hiting "only" 4.7Ths? Previous batchs hit this hashrate with only 600m-625m. Is this some bad batch or what, I suppose b8 unit will heat lot more than previous.

Look at the number of chips it is less on batch 8 from batch 7 and previous batches

B7 162 @ 625mhz
B8 135 @ 700mhz

what I don't get is how they claim the same power efficency

[adaseb]

I don't think they will reduce the price at all. If you bought this miner back in Sept when the diff was around 60 bill and price was $220, you are pretty much at the same ROI period now then before. Actually a slightly better ROI since price is > then diff.

Most calculated 7 months ROI, so in 4-5 months these machines should be completely paid off.  It was a great investment that paid off. Pretty much any miner bought in 2015 was a great investment.

[VirosaGITS]

I don't think they will reduce the price at all. If you bought this miner back in Sept when the diff was around 60 bill and price was $220, you are pretty much at the same ROI period now then before. Actually a slightly better ROI since price is > then diff.

Most calculated 7 months ROI, so in 4-5 months these machines should be completely paid off.  It was a great investment that paid off. Pretty much any miner bought in 2015 was a great investment.

Yeah, at least, unless the price crash hard.

I'm still irritated i could not get one of those S7 when the BTC crashed from 400 to 300 super fast. Bitmain had the lesser units 4ths~ locked at 4btc, so they dropped at 1200$USD equivalent.

That would of been a nice grab.

[dmwardjr]

I believe I'm doing what you are doing to inspect the rigs from now on with future batches.  Especially, after reading the WARNING here in the photo you provided.

Thanks for sharing...