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airdata
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June 07, 2011, 12:07:20 PM |
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We are witnessing the birth of skynet.
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According to NIST and ECRYPT II, the cryptographic algorithms used in
Bitcoin are expected to be strong until at least 2030. (After that, it
will not be too difficult to transition to different algorithms.)
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Advertised sites are not endorsed by the Bitcoin Forum. They may be unsafe, untrustworthy, or illegal in your jurisdiction.
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Aqualung
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June 07, 2011, 12:16:51 PM |
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 this just got here 3 hours ago omg!! Sapphire is gonna be rich!!)) I think they sold all of their radeons 58xx)) ps... maybe our community should write a letter to Sapphire and ask them to produce more 58xx devices?)) pps... i wonder what is in the second box in the top right corner?? |
used to be a miner
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Crs
Member
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Activity: 107
Merit: 10
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June 07, 2011, 12:31:55 PM |
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got to love this thread (aka free bump.)
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Tolsi
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June 07, 2011, 02:25:49 PM |
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5850+6870  |
Like what am I doing? 1FzSgYpLG4fpy2Q9fKXQsuLxHN81m4P3dR
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Adam
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June 07, 2011, 05:20:11 PM |
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Got two computers setup like this so far.  Worthless cases can't fit 4x gpus, so they get relegated to table status. |
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trueimage
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Activity: 87
Merit: 10
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June 07, 2011, 05:40:27 PM |
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Got two computers setup like this so far. Worthless cases can't fit 4x gpus, so they get relegated to table status. can you give a breakdown of the hardware used? and temps? |
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shivansps
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June 07, 2011, 06:28:29 PM |
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shivansps, could you please describe how you have those Antec PSU configured to work together?
Thank you.
bridged the green cable of both psu |
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trueimage
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Activity: 87
Merit: 10
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June 07, 2011, 07:15:38 PM |
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shivansps, could you please describe how you have those Antec PSU configured to work together?
Thank you.
bridged the green cable of both psu with something like this?  |
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borito4
Member
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Activity: 87
Merit: 10
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June 07, 2011, 07:35:20 PM |
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shivansps, could you please describe how you have those Antec PSU configured to work together?
Thank you.
bridged the green cable of both psu with something like this? This. |
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TheSeven
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June 07, 2011, 08:02:48 PM |
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My 120MH/s rig in action:   |
My tip jar: 13kwqR7B4WcSAJCYJH1eXQcxG5vVUwKAqY
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LegitBit
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June 07, 2011, 08:08:32 PM |
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My 120MH/s rig in action:
How much did that cost you? Did you have to build it? |
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spiccioli
Legendary
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Activity: 1378
Merit: 1003
nec sine labore
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June 07, 2011, 08:08:59 PM |
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My 120MH/s rig in action:
Great!! What kind of FPGA is this? And, it seems to be a pci-e 1x board, while do you access it from a serial (?) cable? Best regards. spiccioli. |
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TheSeven
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June 07, 2011, 08:19:45 PM |
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How much did that cost you? Did you have to build it?
http://www.digilentinc.com/Products/Detail.cfm?NavPath=2,400,795&Prod=XUPV5Totally not worth it. $2000, or $750 for academic purposes (which these aren't). Only do this if you have such a board anyway for other things, to make some use of it in the time that it would otherwise be idle. Great!!
What kind of FPGA is this? And, it seems to be a pci-e 1x board, while do you access it from a serial (?) cable?
Best regards.
spiccioli.
This is an XC5VLX110T-1FF1136 running at 120MHz. If you want to build a dedicated mining board, I'd suggest placing a shitload of XC6SLX150 chips on it, and much less unused peripheral stuff. And yes, it has PCIe 1x, but I didn't bother with that (neither from the FPGA nor PC side), RS232 is just easier and simply fast enough (roughly 3% bandwith utilization at 115200 baud). |
My tip jar: 13kwqR7B4WcSAJCYJH1eXQcxG5vVUwKAqY
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trueimage
Member
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Activity: 87
Merit: 10
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June 07, 2011, 08:45:34 PM |
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This is an XC5VLX110T-1FF1136 running at 120MHz. If you want to build a dedicated mining board, I'd suggest placing a shitload of XC6SLX150 chips on it, and much less unused peripheral stuff.
so, those chips are $152 each what is the board to put a shitload of them on? Has anyone tried this with more than one fpga chip? does it scale fully? |
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TheSeven
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June 07, 2011, 08:52:28 PM |
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so, those chips are $152 each
Yeah, roughly, depending on the exact model and quantity. Don't forget the cost of the board though. what is the board to put a shitload of them on?
You'll need to build one. Design and order a 4layer PCB containing the neccessary voltage regulators, clock generation and means of communication (JTAG, and maybe I²C, RS232 or USB?). Has anyone tried this with more than one fpga chip? does it scale fully?
There are already some people running multi-FPGA mining setups. And yes, it does scale fully (~190MH/s per chip, can possibly be optimized even further), and if you also account for the PCB manufacturing and assembly costs, even more than that. |
My tip jar: 13kwqR7B4WcSAJCYJH1eXQcxG5vVUwKAqY
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trueimage
Member
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Activity: 87
Merit: 10
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June 07, 2011, 11:08:01 PM |
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You'll need to build one. Design and order a 4layer PCB containing the neccessary voltage regulators, clock generation and means of communication (JTAG, and maybe I²C, RS232 or USB?).
There are already some people running multi-FPGA mining setups. And yes, it does scale fully (~190MH/s per chip, can possibly be optimized even further), and if you also account for the PCB manufacturing and assembly costs, even more than that.
Build my own board? hrmm I could probably figure it out, eventually, as I do have some experience in other similar projects. But, there is no one that sells one? |
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TheSeven
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June 07, 2011, 11:15:30 PM |
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There are readily made FPGA clusters of course, but they usually include a lot of features that you don't need (like high speed interconnects between the individual FPGAs), and you often won't even find prices for them, as this kind of stuff is usually in the >$100k range.
Building your own one (if your have the experience) might be as "cheap" as $10k per 6GH/s or something in a 3U case.
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My tip jar: 13kwqR7B4WcSAJCYJH1eXQcxG5vVUwKAqY
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Atoth
Newbie
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June 08, 2011, 03:30:36 AM |
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Looks like a MSI 890FXA-GD70 Yes it is a MSI 890FXA-GD70  I have another identical setup like this coming in the mail for a 2nd rig. |
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Atoth
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June 08, 2011, 03:33:34 AM |
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I thought I knew which board that was, but I can't seem to find it right now. Another one you might consider is this one. What I really want to know is, how do you secure the fan on top of the video cards? Surely it isn't just lying there?!? Yes its just laying there on top And no rattling either! It sits nice and snug. |
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error
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June 08, 2011, 03:35:59 AM |
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I thought I knew which board that was, but I can't seem to find it right now. Another one you might consider is this one. What I really want to know is, how do you secure the fan on top of the video cards? Surely it isn't just lying there?!? Yes its just laying there on top And it doesn't move around and eventually fall off? |
3KzNGwzRZ6SimWuFAgh4TnXzHpruHMZmV8
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