220mh per gpu eth mining how legit is this!?

bathrobehero

legendary

Activity: 2002

Merit: 1051

ICO? Not even once.

Quote from: smcalister91 on June 13, 2017, 03:39:56 PM

Quote from: bathrobehero on June 13, 2017, 03:21:21 PM

That's only true if the difficulty is fixed for everyone (no vardiff).

Oh okay I had not heard of that term before today. So is it feasible that his difficulty is so much higher that this is a reasonable number of shares for his computing power?

Yes, difficulty is basically the complexity of a job (share) that is expected by the pool. Low difficulty (compared to your mining speed) is easy to solve so you'll be solving shares too fast and stressing the pool with all the constant data. If it's too high then you'll miss out on solving shares in time. Difficulty can be fixed or it can be variable (vardiff) which keeps adjusting the difficulty periodically for each miner so they all submit their shares at the same frequenty regardless of their speed.

I have no idea if the pool he's using (eth.f2pool.com) uses vardiff but that pool likely uses a different difficulty than ethermine.org - but than again I'm not familiar with those pools and CBA to check myself.

smcalister91

newbie

Activity: 21

Merit: 1

Quote from: bathrobehero on June 13, 2017, 03:21:21 PM

That's only true if the difficulty is fixed for everyone (no vardiff).

Oh okay I had not heard of that term before today. So is it feasible that his difficulty is so much higher that this is a reasonable number of shares for his computing power?

bathrobehero

legendary

Activity: 2002

Merit: 1051

ICO? Not even once.

Quote from: smcalister91 on June 13, 2017, 01:58:25 PM

Okay everyone i did a little math based on my assumption that 4 shares was way too low for this hashrate.

i took the top two miners on ethermine.org and compared their hashrate to mine to try and find an average number of shares found per hour per GH

#1 miner 73.9 GH, reporting 64256 shares found in the last hour, which equals about 868.8 shares found per hour per gigahash.
#2 miner 53.9 GH, reporting 49652 shares found last hour, = 921.18 shares per hour per gigahash
#3(me) .094 GH, reporting 77 shares found in last hour = 819.14 shares per hour per gigahash

As you can see, it seems we all fall into this standard rate of on average around 850-875 shares per gigahash PER HOUR

This equates to (850/60 = 14.16 shares per gigahash PER MINUTE )

His rate of 1.342 GH should have found around 38 shares in that amount of time(14.16 * 1.342 = 19.01 shares per minute, 2 x 19.01 = 38.02 shares in 2 minutes)

This makes me really think that this machine reporting 4 shares found in 2 minutes is not real.

That's only true if the difficulty is fixed for everyone (no vardiff).

smcalister91

newbie

Activity: 21

Merit: 1

Okay everyone i did a little math based on my assumption that 4 shares was way too low for this hashrate.

i took the top two miners on ethermine.org and compared their hashrate to mine to try and find an average number of shares found per hour per GH

#1 miner 73.9 GH, reporting 64256 shares found in the last hour, which equals about 868.8 shares found per hour per gigahash.
#2 miner 53.9 GH, reporting 49652 shares found last hour, = 921.18 shares per hour per gigahash
#3(me) .094 GH, reporting 77 shares found in last hour = 819.14 shares per hour per gigahash

As you can see, it seems we all fall into this standard rate of on average around 850-875 shares per gigahash PER HOUR

This equates to (850/60 = 14.16 shares per gigahash PER MINUTE )

His rate of 1.342 GH should have found around 38 shares in that amount of time(14.16 * 1.342 = 19.01 shares per minute, 2 x 19.01 = 38.02 shares in 2 minutes)

This makes me really think that this machine reporting 4 shares found in 2 minutes is not real.

daadog

member

Activity: 100

Merit: 10

Quote from: smcalister91 on June 13, 2017, 01:15:42 PM

it says 4 shares found in 2 minutes, how reasonable is that? wouldn't a machine hashing this fast have found more shares by then?

It really seems weird tbh. 99% sure it's fake

smcalister91

newbie

Activity: 21

Merit: 1

it says 4 shares found in 2 minutes, how reasonable is that? wouldn't a machine hashing this fast have found more shares by then?

YIz

hero member

Activity: 686

Merit: 502

Either fake or a weird NVLINK or other way to connect more than one card together and run it as a single one. Maybe he just developed some software that allows that system to run the same commands over multiple GPUs.

ivanst776

legendary

Activity: 1540

Merit: 1003

If one gpu fails how can they check which one is not working, testing one by one in another place like in motherboard or there is a special hardware that can detect which one is working and which one not.

At the pics that are shared above seems very promising but I wouldn't feel so much safe enough look at how much closer are the GPUs together.

sp_

legendary

Activity: 2954

Merit: 1087

Team Black developer

Nvidia mining gpu's connectd with NVLINK on a single pci slot?

bathrobehero

legendary

Activity: 2002

Merit: 1051

ICO? Not even once.

Quote from: Tmdz on June 13, 2017, 10:12:07 AM

Quote from: BLOOBERRY on June 13, 2017, 09:21:16 AM

Probably 4U PCI-E expansion chassis to one main motherboard.
Six units stacked on top of each other. They have redundant power supplies.
Power in China is $0.03-0.04 kWH.

http://img02.taobaocdn.com/imgextra/i2/292609051/TB25V2KbpXXXXXWXXXXXXXXXXXX_!!292609051.jpg

http://www.cyclone.com/images/headers/products/600-2710system_apr12.jpg

Yup that has to be it, if the image is indeed real.

That screen shot is super sketchy.

Doesn't make any sense for the miner to see each cluster as just one GPU. You can't just share work like that easily and more importantly it would be utterly pointless to do so.

And it's trivial to modify a miner to show whatever hashrate you want it to show.

There's also this video floating around: https://www.youtube.com/watch?v=FGEuxwKHp5Q

Tmdz

hero member

Activity: 1008

Merit: 1000

Quote from: BLOOBERRY on June 13, 2017, 09:21:16 AM

Probably 4U PCI-E expansion chassis to one main motherboard.
Six units stacked on top of each other. They have redundant power supplies.
Power in China is $0.03-0.04 kWH.

Yup that has to be it, if the image is indeed real.

That screen shot is super sketchy.

BeyondDeception

member

Activity: 80

Merit: 10

It just doesn't make sense. The most plausible explanation is that somehow he has multiple video cards to one PCIE slot. There's no way the new Vega card (or Nvidia) jumps by more than 7 times.

And I'm not sure I believe that they have finally figured out an ASIC machine...

There's something more to this story. It's either fake or they have multiple GPUs to one slot.

BLOOBERRY

newbie

Activity: 6

Merit: 0

Probably 4U PCI-E expansion chassis to one main motherboard.
Six units stacked on top of each other. They have redundant power supplies.
Power in China is $0.03-0.04 kWH.

http://img02.taobaocdn.com/imgextra/i2/292609051/TB25V2KbpXXXXXWXXXXXXXXXXXX_!!292609051.jpg

http://www.cyclone.com/images/headers/products/600-2710system_apr12.jpg

Emoclaw

sr. member

Activity: 420

Merit: 251

RX Vega cards are not out yet, this is probably fake or an ASIC of some sort.
Vega won't do 10x the hashrate of Polaris.

un4given

full member

Activity: 192

Merit: 100

Quote from: vince212 on June 13, 2017, 07:32:35 AM

how legit is this!!!??? rx vega?

https://scontent.fmnl4-1.fna.fbcdn.net/v/t1.0-9/19029717_10203580619431504_1823824124603343840_n.jpg?oh=de4cc8689af5f0db52b1d2342e5707cb&oe=59D2BB08

oh, i already see the difficulty skyrocketing as i close my eyes Shocked

this will be a mess. it is either vega, or special mining GPU's the www rumored about days ago

vince212

full member

Activity: 306

Merit: 100

how legit is this!!!??? rx vega?

https://scontent.fmnl4-1.fna.fbcdn.net/v/t1.0-9/19029717_10203580619431504_1823824124603343840_n.jpg?oh=de4cc8689af5f0db52b1d2342e5707cb&oe=59D2BB08

Topic: 220mh per gpu eth mining how legit is this!? (Read 1696 times)