Shit... erased while trying to make sense of this. Have 3x CX750M and was lead to believe 3x PCI-E power were available from each PSU. Thus far I've got 2x PCI-E power from each PSU. I'd like to be able to know how to do this if possible, if I need a cord that wasn't included, or if there is an alternate way to provide power from what I have to a blade. HALP! http://imgur.com/a/Ha7iI#0You are missing all the important cables, where did you buy them? |
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The site says 2x1200watt power supplies and it's drawing 1500w from the wall. But here is the kicker.. It says 3000w nominal power. So does this machine operate at 2400w or 3000w at any given time? Thanks
The machine will operate at 3000W. The PSUs can do 1200W, but they can be overclocked by 10% which would make them run at ~1320W. This is the power they feed to the chips. The power that they will draw will be 1500W per PSU. Gotcha! Thanks - so a vanilla out of box sp30/31 will only draw 1200w per pus from the wall. With OC 1500w? No. The PSUs supply 2600W to the unit, but require up to 3000W from the wall in order to provide that power. They're about 90% efficient. 3000W wall usage 400W PSU inefficiency 2600W SP30 usage |
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If it is the same (size wise and PSU) how did they end up proposing a 5.5 TH/s compared to 4.5?
By forcing the little chips to work under pressure. Usually the performance increases with the experience gained .. heh. No. There was a manufacturing blip with the first batches of chips causing them to underperform. The SP31 has this removed. |
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Hello all, My Desk needs needs a new owner to clear space for other manufacturers. Pictures of the unit can be seen here. Its a well behaved unit sold without PSU. Shipping is from the UK. Total price is base price + shipping + tax (if applicable). See below.
Base Price: BTC 1.4UK : = 0.28 tax, free shipping = 1.68 EU non business : = 0.30 tax, 0.10 shipping = 1.80 EU VAT business : = 0.00 tax 0.10 shipping = 1.50 US : = 0.00 tax, 0.25 shipping = 1.65 |
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Although I do not have this miner I find that your guides are always thorough and easy to understand. Keep up the good work!
Oh, and do you get any of these machines for testing purposes or do you have to buy them out of pocket?
Its a mixture, this one was purchased. Dogie, do you have an order in for the SP31? How is your overall satisfaction with the SP30? Was shipping on time? I pre-ordered SP31. Looking forward to the 5.5 TH/s. SP30 was fine, but too loud as expected. I don't believe in the race for power density when there are so many tradeoffs for no real gain. Stick it in a 4U case, give us quieter and cheaper PSUs and everyone is a winner. SP31 is no different to SP30 so I don't have an order. |
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On behalf of BitCrane-Tech: 1 @ 0.30
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So whats wrong with the CX500's why pay more for the 750's - are you going to run 2 S1's off the same PSU?
Thanks
4 PCI-E vs 2
Earlier it seems you answered the CX500 has two PCI-E outputs. Then it looks like the CX750M has 4 PCI-E outputs. As is (per question above) seems I'm only getting 2 PCI-E from each 750?
and please let me know about adding the 4 machines to the remaining modem port. if i used a switch i plug that in to the remaining, assign new IP's to each machine in the hub, and proceed as normal?
thank you a billion
I already said before, switch makes no difference to IPs, it literally just gives you more ethernet ports like a USB hub. If you only have 2 PCI-Es, then yes you are missing a cable. I'm not sure if you can buy cheaper cable packs, they're usually the premium colored and braided ones for the super expensive high end ones. You might be better off looking on ebay for second hand or dead PSUs you can salvage for cables. CX750M is worth it over 500 because it gives you much more flexibility in the future and gives you two cable rails. |
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S4 will be 2 th/s but its the price we want to hear and the Wattage
as Bitmain has done in the past hits the market with a current high price and lowers it gradually.
I don't think you're understanding - I could list Dogie's 34214214TH miner only 240W and $20 preorder September 2014 buy now with bitcoin!!!!! It would have exactly the same validity and safety until its proven. Another preorder from an unproven company that has been playing the preorder game for months and months and months is not a good bet. |
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And preordered a month in advance, bitcoin and bank transfer only. No thanks.
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You can't add additional cables.
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What is being auctioned? Why?Non intrusive ad space in my setup guides is being publicly auctioned. I work for the community full time and am not funded by the community or any company. Donations have not exceeded $50 in total this year and so I have to find a way to keep the guides sustainable and FREE for the average consumer. Selling ad space is one such trial.
Ad Format- Leaderboard style (728x90px), static images (jpg, gif, png), non annoying colors.
- Ads may not misrepresent, lie, be inappropriate, be (or link to) NSFW content. I reserve the right to reject ads for other reasons or remove ads even after they have been accepted.
- There are 5 ad slots for sale. One slot will be placed after sections 2, 4 and 6 in all the guides listed at the bottom of the post.
- I will randomise which ad is placed in which slot on each guide so each slot receives the same impressions.
- The ads last at least 10 days starting from when they are put up. Traffic is expected to be 20,000 impressions per slot over the period.
- This traffic is exceptionally targeted to the hardware subforum, and more specifically to those who have either bought or are looking to buy miners.
Auction Format- Auction will run for approximately 11 days, to end at midnight London time / 3PM PDT / 6PM EDT on Friday 5th September.
- Post your bids in this thread. Prices must be stated in BTC per slot. You must state the max number of slots you want.
- The notation "2 @ 0.5" means 2 slots for BTC 0.5 each. Not 2 slots for 0.5 BTC total.
- If two people bid at the same price, the person who bid first will have his slots filled first.
- Bidding starts at BTC 0.30. All bid prices must be evenly divisible by BTC 0.02.
I reserve the right to reject bids, even days after the bid is made. In particular, bids from people with less than 15 activity points are likely to be rejected. I recommend not getting into a bidding war with someone who has less than 15 activity points, as their bids might not be accepted, but your latest bids will still stand. If you need to know right away whether someone's bids will be accepted, PM me. You must pay for your slots within 24 hours of receiving the payment address otherwise your slots may be sold to someone else. I will send you the payment information via forum PM from this account ("dogie", user ID 87869). You might receive false payment information from scammers pretending to be me. They might even have somewhat similar usernames. Be careful.
Dogie's Miner Setup Guides:.Dogie's USB Setup Guides:.Dogie's General Guides:
tldr for getting started:- Starting bid is BTC 0.30 per slot
- 5 slots being sold
- Bid using slots @ price each notation (3 @ 0.50 means 3 slots @ BTC 0.50 each)
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Well I guess I will not bother to get one of these then unless the price drops by quite a bit... 1.04 BTC for under 800GH at what 900 watts? Even with free power it is not worth all the effort  Yeah, never thought buying a heavy duty power screw driver would be a 'hidden cost' I used hand screw driver. Why use electric did not take too long to build 20 minutes, maybe 30 on your first go. A strong, decent and light electric screwdriver costs $50 for example. It saves you 15 per build. At $40/hr (depends how you value your time, you save $10 per build. Afterwards, you still have a $50 electric screwdriver. |
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you sir, are a king. thank you. i got it figured out.
i've one port left on my FiOS modem. will need to bring in a hub/switch tomorrow as i'm adding 4 more machines. how do I sort that problem? same deal, assign them more IPs and simply run them through a hub?
if nothing more than losing money on bitcoin mining, i have learned a ton about hardware and even more about not being a pussy and making paperclip mods and getting this shit done. feels good. thanks all.
also... it feels *good* running 1.5+ Th/s with 4 more machines going online tomorrow.
A switch will make no difference, its invisible. |
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Well I guess I will not bother to get one of these then unless the price drops by quite a bit... 1.04 BTC for under 800GH at what 900 watts? Even with free power it is not worth all the effort $0.65/GH, what else are you buying at that price 0_O |
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Well they Finally made it... ALMOST! DHL lost the 2 boxes with the hash cards in them, really?? Anyway they were located and "should" arrive this evening. Check that I get the pleasure of going and picking them up. Hey Dogie is that part of the Bulk discount experience?
Thats DHL being stupid ^_^ Lets calm down guys. My retail kit will be arriving on Thursday so I'll get a proper step by step guide up with proper pictures, and see if there isn't a way we can speed up those screws. I've ordered a 300g handheld electric screwdriver and I'll see how much faster it is than a good manual to see if its worth others buying. I don't think the normal 2kg electrics aren't going to cut it for something like this. |
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Round 6 has ended, winners are:
BitCrane-Tech: 1 @ 0.30
sunxiaoxiao : 1 @ 0.30
chairforce1 : 1 @ 0.30
Empty : 2
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Good writeup, but no pictures of the miner as a whole. Just insides and one profile. What the heck does the thing look like?
Thats what your community dog is for, pictures will be up tonight or tomorrow.  Two PCIe connectors. You can use 1 connector if you are using a single 1000 watt psu or you can use 2 if you only have two 500 watt psu like me.
Do NOT plug two different PSUs into one board, never ever ever ever do that. Thats how you end up with two dead PSUs and a dead hashing board. |
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I purchased one of these second hand and have already configured 2 x s1's.
It arrived and it powers on but the LED doesnt light up which is why I think I cant get the miner configured. I see no where on the back panel where anything can be plugged into the LED. Should something be plugged into it? cause if so there no where on the green board (backside of the led where something could even plug in) I am just not sure what I can do if the LED is not functional
any help would be appreciated
You mean the LCD? It plugs into the controller board which is the middle card. If the controller board isn't booting, then no you won't be able to configure. You may need to reformat the SD card and reimage the OS. |
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Hi, I recently interviewed the CEO of BitCrane and he said it is available on GitHub. I am going to make sure he doesn't just mean that cgminer is available but their port of it. I have started asking this of companies that I interview now. I feel there needs to be more awareness of it as you do. The interview will go live later this week or next week once I get a few more questions answered and verify info. Thanks again for you hard work. I don't supposed you've seen source code for the (cgminer GPL3 based) driver for this hardware?
They've not forked anything, they're using the original HashFast code and so don't need to repost. |
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