Ich muss im Frühling das günstige Aargau verlassen und hätte evtl. ab April/Mai interesse, falls dein Angebot auch für GPU Rigs gilt.

Yes, you can use a 6+2 connector as 6 or as 8 pin connector. The specs say it has 10 connectors in total but you need 11. I just checked the picture on the evga website, apparently the PSU comes with 4 cables that have 2x6+2 and 2 cables that have 1x6+2...maybe you can just buy an additional 2x6+2 cables from evga...or you have one laying around already....

Dont you need 4*"6+2"pin + 4*6pin + 3*6pin = 11*"6+2" pin? That PSU has only 10*6+2 pin

OK, too much dangerous half knowledge has accumulated here...

It would have been smart to buy 1070s with only one PCIe 6 Pin like ASUS Strix O8G...but its too late for that...maybe if you plan to buy more look out for that. For now you will have to plug in a 6 pin and a 8 pin to your cards if they have both plugs.

The power draw of GPUs works the following way: The GPU takes up all the power it can/needs from the directly connected power connectors and if it still needs more it will draw power from the riser. The 6 (75W) & 8(150W) pin connectors from your PSU provide enough power, i would plug those into your GPUs directly. 4x1070 has a TDP of 600W, check your PSU if it can deliver that much on that cable arm (sticker on the PSU has a chart which cable arm has how much load max).

As you said, now you dont have any powercables left for your 6 pin powered risers. Here you can use those 2 molex -> 1 x 6 pin adapters (1 molex = 55W for 5V and 130W for 12V) as it is unlikely that the card will pull much power from the riser when it already has excess power supply directly.

Hope this helps clear up things

(this kind of plugs im talking about; https://www.amazon.com/TechIntheBox-Express-Molex-Power-Adapter/dp/B01M2VTRTM)

Im in the same boat, got 2x1070, 1x1050ti running and would really like to expand...

But in my opinion its very risky at the moment as GPU prices are still super high but coins are low and falling. There are too many people jumping the hypetrain without doing the math so the GPU prices will stay up and difficulty keeps rising. Im at 0,15$/kWh so i think i will not upgrade my system as ROI for 1070 here is above 1 year...ffs i believe Ethereum PoS will be sooner than all the ppl who buy 1070s now ROI...and thats going to change the mining world.

Running after the hype is never good. Good moments to buy hardware are in my opinion when the coin value is high or when there is a new coin that has something real to offer and is worth mining early and hodl, but all I see is ICO scam and worthless copypaste coins that wouldnt earn a dime without hype.

So i will wait another 1 or 2 months and reevaluate the situation

if you have a coinbase account go to gdax.com, there you have 0% maker fee and you can move everything from coinbase to gdax for free (and back to coinbase...i use it to cash out via SEPA to €)...Its the same company. Sadly still only ETH, BTC, LTC but you might save some fees.

I just checked some german price comparison page, took the cheapest "Bundesland" with 0,29€/kWh and put it into whattomine calc with the 1070s values...it does not include increasing difficulty and its nowhere exact but its a general direction.

lol, germany has average powercost of 0,35$/kWh, you'll have 4$ profit a day with that machine...ROI in 1000 days!
Edit: (but the machine is actually ok  )

...and you guys are not even taking into account that there will be GTX 11 generation next year. This will kill resell value and make your hashrate not competitive against GDDR6 etc.

Every script is written by someone else and might use different values. Mostly they use different difficulties. Some calculators have formulas to project future rise of difficulty and some dont, so you will always get different values. Which is the most trustworthy i cannot tell you.

Here is one with increasing difficulty formula: http://www.mycryptobuddy.com/EthereumMiningCalculator

I tend to use the most pessimistic forecast and then im happy if i get more, but if prices keep falling i will also have to look for a more accurate solution

Exactly, power the riser and the GPU in that riser from the same PSU and it should be fine. Like this: PSU1: ATX, CPU, GPU0 in x16 slot, GPU1, Riser 1 PSU2: GPU2, Riser 2, GPU3, Riser3 etc.


Honestly, I havent seen a single thread discussing that but im new here I can think of two reasons where you would talk about such a thing:

1. The basic principle is having a common ground for all electrical loads together. If you look at your entire rig as one circuit then you might consider connecting grounds. But if you connect a GPU and its riser to PSU2 then you have an independent circuit as none of the consumers is connected to PSU1 and therefor dont need to connect grounds.

2. To power on the 2. PSU you have to ground a pin on the ATX plug (thats what usually the power on switch does when you press it...but thats connected to PSU1 so you have to forward that signal somehow to PSU2). People use an "add2psu" thing for that.

Everything is grounded already. Please dont connect some random stuff with each other.

The PSUs are grounded through the power cable from the wall and all the hardware is grounded through the power cables coming from the PSU. Connecting a mounting hole to the PSU case could only trigger "Case Open" detection some mainboards have and thats useless....or in worst case you create a short somehow and break something with the addiditonal cables added.

Just watch out not to mix stuff up and power each piece completely from the same PSU (e.g. Riser + GPU from same PSU, CPU Power + ATX power from same PSU etc.)

Total crap. Transaction times and bandwidth are not related like that. 100mbps will do perfectly fine for mining. You will have spare bandwidth for Remote Desktop etc.

Did I understand your text correct, that you have your OS on your USB Stick and you try to boot from it?

Some steps you could try:

1. Turn off bootlogo in BIOS and try again, maybe it will tell you smth usefull
2. Try other USB Port
3. Turn off quickboot in BIOS
4. Change Boot priority/order and remove everything thats not needed from boot list

Cheers

ZEC:
EWBF 0.3.4b
ASUS STRIX 1070 O8G (Micron): Core+100 [1733MHz], Mem+0 [2002MHz], 70% PL, 61°C, ~415 Sol, ~3.5 Sol/W
Gigabyte 1070 Windforce OC (Hynix): Core:+175[1732MHz], Mem+0 [2002MHz], 67% PL, 62°C, ~425 Sol, ~3.6 Sol/W

ETH
Claymores Dualminer 0.97
ASUS: Core-200, Mem+600, 61% PL, low 50°C, 31,xx MH/s (More + on mem and i get invalid shares)
Gigabyte: Core-200, Mem+650, 61% PL, high 50°C, 31,xx MH/s (More + on mem possible, but i dont want to)

Can anyone of you try to drop only their Memory to +0 for ZEC and see if it changes anything? I dont get a single Sol more if I overclock it from +0 - +700Mhz

I thought about 1050's aswell as i already own a 1050 ti and was able to test it and i also liked the idea of less pcie 6/8 pin plugs as this is the common shortage of all PSUs.

Here is why i went for 2 1070s instead:
-1050 2GB wont mine Ethereum, 1050 ti (4GB) is just a pain to reach any payout limits on any pool and also nicehash miner doesn't seem to like it (benchmark crashes).
-My Zotac 1050 ti only gets 2.5 Sol/W on ZEC
-It draws 75W through the PCIe slot (mainboard). I believe thats the reason why it also is not SLI Capable...you can definitely NOT pull 3,4,5 or 6 * 75W through your mainboard, it will melt...i wouldnt put more than 1 1050 per mainboard.
-Over/Underclocking is very limited (70% - 100% TDP only)...though my card reaches +650mem easy

If you really want to do this, check specifications of how much power you can draw on all PCIe slots together (I didnt check) but im sure it wont support 300W.

Cheers