The one I have now is sapphire.. I think I need an identical gpu.. 1gh ;-)
I have a few different 5850 in stock. You don't need an identical one, but I'll probably have it anyway. Do you have a stock picture of how it looks like? I'll ask 40€ + shipping |
|
|
|
First review:
Last night i placed an order buying a S7 B7 with fast shipment and paid by Paypal. This morning i placed another order buying a S7 B6 with normal shipment and paid by Paypal. First of all, Paypal send an auth to Bitcoin-Shop.org to aprove the payment. Then, i received a notification with the payment and with a note: "Thanks for choosing us. Your order will be shipped in the next 48h. Best Regards". Last hour i received a mail from Paypal telling me that the seller cancelled the operation and returned all the money, with a note: "out of stock".
Well, i'm disapointed with this. I would like to receive a mail from they telling me something more instead, or proposing another option, but i cannot tell anything bad about them. But, please, if you want to send me a PM (or mail) with some more information, it will be apreciate...
Same here, ordered through Paypal early yesterday, got a refund without any explainations. BTC and other not reversible payments are probably preferred (I'm wondering why), so all Paypal orders are refunded..  |
|
|
|
This is a question to people who have had experience with buying things from technobit.eu. I want to make sure that the people I'm buying from will actually be able to deliver my miner in a timely fashion (I do live in North America, and I know they are based in Europe so shipping will probably take a while) and that miner I buy will actually come in working condition. So my question is, in your experience is it a trustworthy website? I have seen lots of announcement threads for their miners on this forum, but I havn't seen many threads discussing as to whether the company is reputable or not. I'd like to be confident that the company is reputable before I buy anything from them.
P.S: I'm not sure if this is being posted in the right board or not. If there is another part of the website where this could be better answered please let me know.
Thanks
Don't buy anything from Technobit directly. The site is up, you can even pay by bank transfer, but there is close to zero chance you'll receive anything. If you want a small miner to see how it works and not loose too much money (maybe even recoup your investment), your best bet is to buy a compac made by sidehack and also manufactured in Europe (look in the group buy threads). Second hand S3/S5 are overpriced (soon unprofitable for the S3), older gen are costing you money to run. Even putting thousands or $/€ in antminers S7 or Avalon 6 won't allow you a much better chance of return on investment, and the initial money needed is over 1000$. |
|
|
|
Good tip. Just playing with the different setting to see the potential, I will reduce the voltage for the S7. Only getting this more for the Avalon.
Just curious - What ambient temperature were those guys running that they burn their boards? My garage is currently 65 degrees right now so I'm not as concern for a short test. What hash rate would I get at the lower voltage and that freq you mention?
some were under 50f maybe 4600 vs 4730 I sent a PM to Finsky and waiting on a response but figured I would ask here. I was sent the 4k set-up, purchased my own fans and set it up and the PSUs made crackling sounds. I assumed with the c19-c20 power plug from PSU that it would work with my 240v PDU (just like the 2880 set-up I currently have from finsky). I looked at the power cord and saw a small sticker that says 120v 15 amp, so I am thinking I have to buy a separate power cord c19-c20 rated for 240v 30 amps for both PSUs to work with the PDU but I am afraid that the crackling might have fried the PSUs utilizing the 120v plugs. Please let me know your thoughts. thanks! You have a different issue. The power cords are good. The wires can handle 240 volts. Need photos of the setup. Need to know if you crossed the pcie cables as you can put them in backwards. Do you power on with no pcie cables . Just the fans and no miners? Just the fans, no miners. Is that the issue? I had to buy the fans separate and was going to try a few ways to set it up before attaching the miners. I have some Sunon fans that made some crackling noise too, when I overvolted too much, like 12.9v. But apart from the noise, they have been working fine for a few hours until I reduced the voltage for other tests. Then, I swapped them for other fans. My Ultrakaze fans were working fine on the same pack of PSUs. |
|
|
|
After seeing DMwardjr's Youtube video about respecting Electricity and that guy getting fried by high voltage, I have a fear of even touching power cords.... Haha. Only tried and true for me, especially after Phillip did another 1 saying, open the PSU at your own risk,,,,,,,,,,,,,,,.DEAD Meat. So I will only do what is considered tried, true, rinse, rather and repeat solution. No wild cowboy moves for me. Still have 2 kids to take care of. =)
P.S Thanks for the heads, up. Going to the Garage now to fiddle w the Voltage thing.
Update - The switch only have 2 position on my 4K board. Maybe I have a bad unit? Pulling it up shows 12.11V and pulling it down gets me 12.26-27. There is nothing in the middle or any other settings. I even tried taking out the nut / washer to make sure it was causing it to be stuck. Even tried pulling to the left and right. No dice =(
trim the potentiometer to the right to add some offset to voltage adjust. switch in low position is overvolt, high position is undervolt. middle position do nothing when you have it. Finksy probably delivers the board with potentiometer set to a minimal offset to avoid trouble. I'm delivering them set in medium position to get more offset (+/- 0.4V) |
|
|
|
Novec may be a better option when you live in hot climate and need to use complex costly system to cool your farm,
No it's not, because you need a temperature differential between ambiant and Novec boiling point. With high ambient, you'll have to use chillers or huge amount of air to cool the fluid in the condenser. Novec won't really help reduce costs, it'll allow you to have a more dense power usage, reducing some fixed costs. If you need to dissipate a certain amount of heat (watts/BTU), wether it's in 2 phase immersion cooling or air cooling, it'll cost the same (it will be even more in Novec). The advantage of Novec is to allow you to densely pack those heat generating unit. Maybe you can ask planetcrypto since they did some tests https://www.youtube.com/watch?v=gcb9TyQP5ZABTW, with a proper condenser, you could squeeze at least 4 hashing boards in the tank they used, and if the spacing allows it, maybe even 6. 15-20mm between boards is usually fine. |
|
|
|
The price is per unit and yes seems cheap. However, if a major player had blocked 500-1000 units for them self maybe they paid half of that.
The rumor prior to release last year was a speculated retail of $36,000 each. Only time will tell as they invited me to come and see the equipment which seems OK. I am lucky to have a lot of friends world wide so I asked one to go there this week.
They can't even copy/paste correctly from the spondoolies website: http://www.spondoolies-tech.com/products/sp50Form Factor: 11 U rack mountable (mounting ears provided)
Network: Single 10/100 Ethernet port
Fans: 6 X 120 mm Dont waste your time/money with them. |
|
|
|
Finksy can you tell us which revision we need to look for ?
thanks
I could be wrong but from what I remember you need S8 or below. Somebody please correct me if I am wrong. Yes, S8 or below if you want to use the external voltage adjust. DPS2500BB will not work for voltage adjust. If you don't need voltage adjust, any revision will be fine. |
|
|
|
We are back with latest 16nm ASIC,supported by BITFURY.
1, 10THS/miner,
2,100W/THS, 0.25J/GH on wall
3, 4X 6pin PCI-E
4, Gross weight 5KG
5, size: 350x140x155(adjustable according the design)
the price is BTC0.42/THS, fob china.
miner ship at end of march or early April.
What the hell!! What is that i am reading? the miner will have 0.25J/GH on wall??? the same eficience than a S7??    100W /THS is 0.1J/GH and would be very good.  Rich Please, look at the first post, they add 0.25J/GH, not me...  Ok sorry thought you had added that. But if they can't even get that right it just goes to show that they don't know what they are talking about... Rich Even the title of the thread have been updated, so maybe not a typo. from 16nm ASIC, 10THS/MINER,100w/THS on wall. to 16nm ASIC, 10THS/MINER,100w/THS 0.25J/GH on wall. If those new numbers are real, there was no need to go to 16nm, and the price will be barely better than actual S7 pricing |
|
|
|
We are back with latest 16nm ASIC,supported by BITFURY.
1, 10THS/miner,
2,100W/THS, 0.25J/GH on wall
3, 4X 6pin PCI-E
4, Gross weight 5KG
5, size: 350x140x155(adjustable according the design)
the price is BTC0.42/THS, fob china.
miner ship at end of march or early April.
What the hell!! What is that i am reading? the miner will have 0.25J/GH on wall??? the same eficience than a S7?? 100W /THS is 0.1J/GH and would be very good. Rich Please, look at the first post, they add 0.25J/GH, not me... Probably a typo. Because 4 PCIE plugs will already have some trouble for 1000w, but drawing 600w on each of them is impossible. Even if it's a typo, I hope they will at least use 6 PCIE plugs for 1000w |
|
|
|
It's highly unpractical to use for mining at home. A small demo tank can be easily made. You can find a lot of YouTube videos about it. But avoiding leakage is not an easy task, and the Novec is really expensive, like 70$ per liter (sold by the weight). |
|
|
|
haha look at this. This person is most likely scamming. They emailed me and here is the whole thing https://imgur.com/a/6ndVEThey would refuse to use an escrow... ummm... unnerving So, was he scammed 4 or 2 BTC by Master-P? Why didn't he post in the thread to claim his money back? |
|
|
|
Bitfury is using immersion tech in it's new mining center(s), per at least 2 announcements I've seen from them.
NOT applicable to a home miner.
yeah ..they just run slower if not in immersion see this link...supposedly you may get some of these chips 'someday' er so they say http://www.thebitcoinchannel.com/archives/52211note link above you get more with oil cooling then w/o ...but they still seem to work ..just not as good but again will probably get these chips in a home device LONG LONG after it makes any sense to do so..with continued expected 'mad' difficulty rises due to massive data halls etc The boards designed for immersion won't be usable for air cooling unless they wasted a lot of space on them (very unlikely when you know the cost of a large scale immersion cooling setup). The power dissipation needed to cool such a dense amount of chips is really hard to reach with air cooling unless you underclock (not profitable considering the cost of the chips). Boards made for air cooling, on the other hand, can be used in immersion, the power density won't be optimal, and you'll have a harder time to recoup the initial investment, that's all. If they wanted to demo the chips, they could simply use a smaller acrylic tank with one or two blades like the ones we use for prototyping. I'm not sure they want (need?) to advertise. |
|
|
|
He is also supposed to receive a pallet of S5 refurbished and checked by Bitmain guaranteed without any dead chips  I reported all his auctions with miners. unfortunately, we can't add a comment when reporting to Ebay, so I can't tell them what to check. |
|
|
|
Hmm, well, i dont know. Delivery: Estimated between Wed. Jan. 20 and Fri. Jan. 22 Includes 10 business days handling time after receipt of cleared payment. Please allow additional time if international delivery is subject to customs processing. So its a pre-order. The price is pretty close to B9, but if you get B9 in bulk order or coupon, it would be possibly much cheaper. Not sure about ebay's cut. Anyways you're protected by the ebay buyer protection thing, but that does not mean its going to be hassle free. this guy is losing money.. ebay takes 10% and paypal takes like 2 or 4% unless he ordered a crap ton using coupons for all of them and bulk discount hes probably breaking even at that point maybe just a way for him to convert his coins to fiat easily He obviously has done a bulk purchase, says 23 sold in 24Hrs & still more than 10 Available. Something does not quite add up as he is based in France & must have to pay VAT, so the price seems too good? Interesting to me, based in the UK, as if it's legit it's way cheaper than I can get an S7 with VAT & other charges. I will ask a couple of questions and see what I get back? Rich . The VAT number doesn't seem to be real. (checked on VIES, official EU VAT validation site) The company registering number belongs to another company. (checked on french website www.avis-situation-sirene.insee.fr/) Phone and fax number belongs to another company (not the same as the registering number neither) The name and address given are belonging to a company, but not with those registering number and VAT number. http://www.societe.com/societe/monsieur-guillaume-wysocki-442341178.htmlhmm why would he use ebay to scam? buyers can just reverse payment unless hes using a bogus paypal and funnels the money to another source after everyone buys his fake units.. then proceeds to ditch that paypal account Paypal can only get your money back if it's still in the paypal account, and maybe if there is a bank account linked to the paypal account. I'm almost sure there are ways to use the balance up to a certain amount without linking any bank account. |
|
|
|
Hmm, well, i dont know. Delivery: Estimated between Wed. Jan. 20 and Fri. Jan. 22 Includes 10 business days handling time after receipt of cleared payment. Please allow additional time if international delivery is subject to customs processing. So its a pre-order. The price is pretty close to B9, but if you get B9 in bulk order or coupon, it would be possibly much cheaper. Not sure about ebay's cut. Anyways you're protected by the ebay buyer protection thing, but that does not mean its going to be hassle free. this guy is losing money.. ebay takes 10% and paypal takes like 2 or 4% unless he ordered a crap ton using coupons for all of them and bulk discount hes probably breaking even at that point maybe just a way for him to convert his coins to fiat easily He obviously has done a bulk purchase, says 23 sold in 24Hrs & still more than 10 Available. Something does not quite add up as he is based in France & must have to pay VAT, so the price seems too good? Interesting to me, based in the UK, as if it's legit it's way cheaper than I can get an S7 with VAT & other charges. I will ask a couple of questions and see what I get back? Rich . The VAT number doesn't seem to be real. (checked on VIES, official EU VAT validation site) The company registering number belongs to another company. (checked on french website www.avis-situation-sirene.insee.fr/) Phone and fax number belongs to another company (not the same as the registering number neither) The name and address given are belonging to a company, but not with those registering number and VAT number. http://www.societe.com/societe/monsieur-guillaume-wysocki-442341178.html |
|
|
|
Stop posting about them. If they had those miners available, they'd let them run for extended test, right? http://eligius.st/~wizkid057/newstats/userstats.php/1P9gzKnEgyMRQGaytX28XKeoJRaS9jFwRHThey simply rented some hashing power, pointed it to eligius to make it look legit. I can't imagine anyone with 600TH of those machines shutting them down after a few hours and not shipping a single one for review.. The first 600TH were an obvious 8 hours rental I have to admit they at least put some effort into it since even the address on the LCD matches the one on eligius, and something is really mining on Eligius. If the machine was for real (and it's been advertised for over one year), they'd simply send (or sell with escrow) one for review to some higly trusted member or independant site (cryptocoinsnews, maybe). So, no need to continue using newbies accounts to "promote" this scam. As someone proposed, yesminers and a few other obvious scams should be in the list of banned words from the forum. I'm not new, have an account of June 08, 2014. and did not aim to promote Yesminers. We'll see in about a month who is right and who is wrong. Their 12h, 25TH rental just ended. There really are laughable. Where did you get the info about this new video? |
|
|
|
still no reply  All PMs will be answered as I sober up, it's 7AM here and for once New Years wasn't a disappointment Items should arrive to buyers next week; remember the holiday season... Discs have been sent anyhow. Next week we'll also expand our stock beyond SSDs. Discounts will be great on the new stuff Will you have smaller SSD's (128GB)? I might be interested, depending on the price. No, if you not ordering bulk. Too much work for too little money. Sorry. Is it only one you need? I have small ones, but they are used. Could send you one of those if you want. Regards I may need in a close future some 128GB ones too. Probably at least 30 of them. If the price isn't that good, I can go for 256GB ones instead. |
|
|
|
Stop posting about them. If they had those miners available, they'd let them run for extended test, right? http://eligius.st/~wizkid057/newstats/userstats.php/1P9gzKnEgyMRQGaytX28XKeoJRaS9jFwRHThey simply rented some hashing power, pointed it to eligius to make it look legit. I can't imagine anyone with 600TH of those machines shutting them down after a few hours and not shipping a single one for review.. The first 600TH were an obvious 8 hours rental I have to admit they at least put some effort into it since even the address on the LCD matches the one on eligius, and something is really mining on Eligius. If the machine was for real (and it's been advertised for over one year), they'd simply send (or sell with escrow) one for review to some higly trusted member or independant site (cryptocoinsnews, maybe). So, no need to continue using newbies accounts to "promote" this scam. As someone proposed, yesminers and a few other obvious scams should be in the list of banned words from the forum. |
|
|
|
Well the batch eight went into the other direction about .3 watts vs .25 watts.
Just to make sure we are on the same page: Batch 6 was factory set at 600 MHz for 4.06 TH/s with 135 Chips Batch 8 was factory set at 700 MHz for 4.73 TH/s with 135 Chips Hence the .25 watts versus .3 watts because of Batch 8 clocked at a higher frequency. My question is, can I under clock Batch 8 down to 600 MHz and get the same .25 watts efficiency as the Batch 6 at 600 MHz? If the efficency is really different, it's very likely that the buck converter is set to another voltage. I'm back home. Will answer PM, quote requests, arrange a few deliveries first. Then, I'll look more in depth at what can be done on this buck converter. Better efficiency should be easy by setting the output voltage slightly lower. Overvolting might be tricky because the MOSFETs could already be close to their limits at 800MHz. I didn't check the data sheets. (my batch 8 ran without any issue 10 days at 800, I set it back to 700 so it's not too loud now that we are back. As has been said, if the efficiency is significantly different then that requires a different core voltage. What I am not sure about is where the numbers shown are coming from? The Batch 6 spec was 600MHz, 4.05TH/s, 1042W, 0.25J/GH The Batch 8 spec was 700MHz, 4.73TH/s, 1293W, 0.25J/GH If you do the maths yourself on the above TH/s & W you get Batch 6 0.257J/GH Batch 8 0.274J/GH Will however be very interesting to see if the Buck Converter voltage is different between Batch 6 & 8. Also if it is Factory set or controlled by the Controller? Rich if it was set by the controller according to requested frequency, I believe that we shouldn't see people having trouble overclocking to 750 or 800 since the voltage would also rise (unless capped in the software). Anyway, I'll try to get some time to play with the S7 on tuesday so we can get some answers |
|
|
|
|
Show Posts
