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I tried running with 6 HD5870 on a single MB but I could only get 4 out of the 6 to work properly, XFX couldn't see any reason why but figured it was down to resource problems with the MB - I've since changed to use 3xHD5870 per MB.
ChrisB.
What motherboard are you using? |
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For USB KEYS if you have many rigs like more than 10 rig, you can use PXE to boot linuxcoin, save the cost of USB key 3 x 5830 = $320
Motherboard = $100
Power Supply = $50
Processor = $30
Total = $500
hard drive? memory? USB = $1 Cheap Memory = $10. You people are ridiculous. case? operating system? fans? keyboard? mouse? printer? scanner? fax machine? 56k modem?!? 56k modem ! what decade are you in ? Anyway, you don't need any of the items you listed, once you have your first machine, that is. I have 1 monitor, 1 keyboard, 1 mouse, KVM, and 4 machines  3 are dedicated miners with bootable usb with Linuxcoin Okay, okay, fans might be a good idea |
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Does Any make analysis on core code of each miner
About comparing how they optimization the SHA-256 ( on the special case of mining uses)
May interesting
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What will happen if miner never change timestamp
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Neither am I. I would have no clue where to begin. Designing your own circuit board is not that easy. I think for now I'll stick to "power hungry" 5870s and 5850s :p
My great hope is not for these low power gpus but for fpgas and ASICs.
Is there any ASICs designed for short fixed length SHA256? |
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Gigabyte GD70. get extender cable for 1 or 2 of the PCIe. and theres still PCI-E to spare if u have adapter.
something like this? how many graphic card does it support? And what is extender cable or adapter?  |
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I'd like to know where I can get a PSU that supports 3x5830 for $50.
what is a PSU? power support unit? |
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I'd like to know where I can get a PSU that supports 3x5830 for $50.
what is a PSU? |
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It's just for fun, I believe it will be very slow
Anyone designed a asynchronous circuit (without clocking) which could calculate hash for fixed length input.
just for fun, the speed won't be high.
the bitcoin block header is 81 byte fixed length, so ....... a asynchronous circuit will be possible and only 4 byte (32 bit) are input line, others could be a register which stores information other than nonce, and only updates after 4294967296 hashes. |
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It's just for fun, I believe it will be very slow
Anyone designed a asynchronous circuit (without clocking) which could calculate hash for fixed length input.
just for fun, the speed won't be high.
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You could do 6 cards by using PCI-E extenders. Just a warning though you run the risk of exploding the motherboard if you run 6 5870s, as the PCI-E bus still delivers power to cards despite having external power connectors. I don't know the exact numbers, the spec calls for 75W max, so say 40 * 6 = 240W running through the PCIE Bus.
Of note, a $200 motherboard that requires a $200+ CPU isn't necessarily that money saving. You can find cheap AMD AM3 boards with 5 PCI-slots (x1 works fine) for ~$120 with a $40 sempron that saves you > $250.
In fact you could get 2x $120 mobos + 2x $40 CPUs, have 10 slots for cards and still have spent less than you would have on LGA1366.
what kind of AMD AM3 boards have 5 PCI-E slots which could install a graphic card? |
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Hi Can anyone make a package with OPENCL & ATI/Nvidia graphic card driver and also motherboard chipset driver. on windows The package could check what hardware user is using and choose proper driver to install ( like http://www.driver-soft.com/ ) And also like the drivergenius it could be a small version package without drivers, only with OPENCL library, which search driver from internet and download first. then install drivers and OPENCL. Then make proper script execution (without voltage, clock adjustment; it's not safe should only be done manually) to adjust proper configurations to OS & miner to optimization mining. (may even start miner with different configuration to decide which is the best configuration for this machine) Then after the installation package finish, you can just start a miner by double clicking the bat script ~~ Thanks, |
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The Bitcoin server, after deciding which transactions to include in the block, builds a Merkle tree of the transactions, probably using some standard library. The hash at the root is the merkle root. Then after a transaction, the new merkle root generated and replace the old one since the block header has changed, how can we verify the block? |
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openssl pkeyutl
You mean that other application could read the wallet.dat without decrypt by bitcoin client? really surprise me. |
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Is there any application that sign a human readable file by bitcion wallet private key?
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2. no more pools being able to decide what transactions to include or not (see eligius and its policy of charging fees for all tx), or to try to create blockchain forks for double spending if they get too powerful (this hasn't happened yet, but it /could/, theoretically.)
Why they can't now? |
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