I wonder too. I have received back 50% over the total 100% full paid amount (4x Vipers). Now they seem not to be willing to pay the remaining 50% as they claim it was a final settlement.

Thank you, submitting my orders/payment details towards them right now.

Great news, do you have a case number or reference number we can use when starting communicating with them? Also is there any e-mail address where these complaints can be send?

On their contact page there is no phone number anymore.

Self made using php, mysql and some css with jquery

Seems the payments from today where Wire payments: https://bitcointalk.org/index.php?topic=291141.msg6855566#msg6855566

[ Reserved ]

Hi there,

As I have been receiving quite a few requests over PM and mail I decided to open a dedicated thread to answer questions rather then monitoring three threads with separate questions  

If you have ordered with Bitmine AG and did file a refund request with them you can now also list them on www.bitminerefund.com so that we together can create transparency about their open refunds to customers.

I work in my spare time on this website so please be gentle

[ 08-05-2014] Initial version of the website

[ 09-05-2014] Created separate pages [ index , submission page, small faq ]
[ 09-05-2014] Submission page improved to submit refunds which not yet got confirmed by Bitmine
[ 09-05-2014] Global US Dollars counter on top right of the site showing sum of US Dollars owed over the verified refund listing
[ 09-05-2014] Minor fix for mobile devices

[ 10-05-2014] Within two days we reached more then $100.000 in refunds on the verified listing!
[ 10-05-2014] Small issue with pagination now having color indication
[ 10-05-2014] Working on handy notification system when submitting refund orders with no confirmation date yet  
[ 10-05-2014] Basic twitter bot feature waiting for Twitter API 1.1 keys to be fully automated
[ 10-05-2014] Added privacy mode to order submission (hide your last digit from the order number in the listing)

[ 11-05-2014] Twitter bot now operational with API 1.1 keys, expect automated updates on Twitter about passing due dates and new listings

[ 15-05-2014] 50btc.com reseller added

[ 20-05-2014] In less then two weeks more then $200.000 in verified refunds listed!

Thank you for all the feedback and suggestions!

I splitted up the listing for unverified and verified. Users who now submit their refund listing will be first under the "unverified" listing. When they send their order confirmation then I can move them to "verified". There is always a small chance for user error when they wrongly assume their refund is processed.

I extended the form to include the e-mail address for the refund so future listings with odd things can now be back-contacted by us to ask for clarification.

Hope this helps! Check out the new layout: www.bitminerefund.com

It got a confirmation date set during it's submission, this is user provided data with a confirmation date, maybe a refund request which got honored earlier then it should?

I can adjust the page where it looks to the order date and calculates the days between order date, but then again, bit difficult because Bitmine I believe counts from the batch delivery week, not the order date. Not sure how to make that 100% water-proof. Suggestions?

Hi there, can you submit your refund in our central database listing so we can keep track of the refunds?

www.bitminerefund.com thanks!!

For everyone who filled a refund and got paid or is waiting for payment please list your refund claim at www.bitminerefund.com so we can build a list of open and paid refunds.

Hello guys,

I have been reading both the unofficial and official Bitmine thread. Lots of frustrations by unhappy customers. I'm trying to get my refund from this company for two orders, total ~ $ 50.000

I have been very patient, paid November 2013 but no rigs or any clear estimate is given by Bitmine. Their deadline of their "30 days" refund period is about to expire but no response for weeks now by either mail or phone (not being picked up).

I'm now planning to visit their facility and if needed file a local police report. Anyone visited their facility lately and/or having the same plans? For people who have visited their facility more recently, are they still located at this location?


Please send me a PM so we might join as a group.

Looks like water cooling is the way to go. Expecting the cards and chassis to come in somewhere next week. Got a very detailed e-mail from EK with their products which also mention the full cover 7990's so will look into that and puzzle it together so the cards, chassis and hopefully the water cooling products arrive at the same time.

Also did put in a secondary PSU to make sure I do not run into power issues when the four 7990's are running at max speed.

Regarding the liquids to use, i see they have copper and nickel plates, any advice there what to use in combination with what liquid?

Hi,

To my understanding ASIC's are application specific and thus requires me to have an ASIC designed for my specific goals. As my code implicates highly non-standard calculations (no double sha) a far cheaper goal would be to go with GPU's. My goal is to build a 32 GPU cluster. Each node with 4x 7990 = 8 GPU's so with 4 machine's I'm all set.

Now only the cooling is an issue which I think would be solved by using water cooling (chillers) instead of open-air systems and heavy A/C units.

Going for a Lian Li PC-D8000 case with a secondary PSU regarding the power concerns and the 4th XFX 7990. People here have experiance cooling such config?

Hello all,

Really wanted to post this question in the hardware section to give it a bit more attention but here is my story.

I'm a programmer heavily using the OpenCL framework mainly using AMD/ATI GPU's. What started as a simple project is now getting bigger and bigger and thus needing more resources. I asked a computer shop to come up with a more heavy system with more GPU's to satisfy my GPU processing needs.

My first system was a single HD 7970 for testing purposes which simply works and no issues with cooling at all but was not having enough power.

Then I decided to step it up a bit and go for a quad 7970 setup but immediately ran into cooling issues. They have tried to go with extra fans, more spacing but still no luck (build up in a chasis). They took back the system and build up a 3 x 7990 (XFX type) machine with more spacing, bigger case, even more fans but after running for 2-3 minutes on all GPU's at 100% temps are up to 90C which is the temp where my own fail safe kicks in and shut down the calculations.

Now the reason I'm posting here is that lots of people here have experience with cooling their rigs and building heavy dutch machines ;-) I have been browsing and learning a lot the past few days but I need some advice here.

I really prefer a closed chassis just to keep things tidy and clean but using pure fan's just not seems to get these things cooled enough so here is the time to reconsider my entire setup and now do it properly... I'm open to all suggestions.

My end-goal is this: 2 worker machines, 4 dual GPU cards 7990 running in a VirtualCL cluster. Simply because I then can fire up from my build server and let those machines to the heavy duty work in parallel. Now the VirtualCL requires roughly 90 Mbit/sec per GPU. Thus building a machine network with in total 2 gpu's per card * 4 cards per machine * 2 machines = 16 GPU's totally consuming roughly 1500 Mbit/sec. Since most mobo's out there only doing 1000 Mbit I should take into consideration reserving a PCI slot for a 10000 Mbit network card or probably infiniband card.

Current base system looks like this: Asrock X79 Extreme 11 with a i7-3930K CPU and 16GB of RAM with 3x XFX 7990 and a LEPA G1600 as PSU.

My concerns by adding a 4th XFX card is that it consumes too much power to be handled by the G1600 under full load as to my understanding a single 7990 can eat up 375 watt. So with 4 cards this could already consume 1500 watt leaving not much power left for the mobo/cpu/ram/hdd.

I think the motherboard is a great pick and the i7-3930K is doing great with CPU intensive operations. RAM here is just fine with the 16 GB. I just need to figure out how to build and keep two of those systems cool and giving it enough power. I can draw 2x 16amps from my outlets so that should not be a problem here just the PSU's might need a dual setup but not sure since I was not yet able to get a real good measurement on the actual usage of a single 7990 as the 375 watt mentioned earlier is just from a spec sheet running factory default settings.

So please let me know your thoughts and considerations !