I love it but honestly I would like to see a "bigger one".
PCIe 6/8 pin connector is good for 150W. I would love to see a backplane which gets power from a PCIe 8 pin "socket" (and can work with either 6 pin or 8 pin connector, usb controller for connection to a host, and a 120W 12VDC to 1.2VDC supply and 12 (yes 12) connectors.
Each board would have only a heatsink no fan and you could put 2x 140mm fans along the "long side of the board to blow cool air across all the heatsinsk. The board could have L brackets (or just screw holes) to mount the fans and 2x 3pin fan headers to power the fans.
210 MH/s * 12 = ~2.5 GH/s fully loaded and user could add daughter cards incrementally. An 900 to 1200W PSU w/ 6 PCIe power connectors could power 6 boards or 12.5 GH/s. It could be a "poor mans" Rig Box. Start small w/ one backplane and 4 or 6 FPGA and build as you go.
Ummm... DAT, the ATX spec regulates the GPU power consumption, not the connector itself. The fact that a GPU is lmited to 75/150W does not imply the connector itself can't deliver (much) more power. The PEG-6 connector is actually the Molex Mini-Fit Jr connector configured with HCS contacts. These are rated for 13A each. With three 12V wires/contacts, you're looking at 3*13*12 = 468W max theoretical load. To be on the safe side, take 80% of that value and you are looking at 375W with a single PEG-6 connector. The PEG-8 connector is pretty much the same as PEG-6 as the number of 12V wires/contacts is unchanged. |
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just another (useless) protocol.
'tis not so, it's a protocol of military-grade strength  Much good it'll do when the vBulletin-powered server gets rooted. Any server is only as good as the admin running it. Somehow, I've got this gut feeling this ain't gonna be the Fort Knox of forums... |
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OBSD comes with military grade encryption
lol  |
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6990m < 6870... 6870's get anywhere between 230-275m/hash. So 220m/hash is probably right where you could expect it.
Ummm... 230 MHash/s can be easily achieved with a lowly hd6770 card (800 SPs, overclocked to 990MHz). Mobile devices just aren't designed for tasks as compute-intensive mining. BBlotus, you're out of luck. |
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However, I'm wondering if I can safely get 1000W through 12V out of ATX PSU. It seems that, where multiple 12V rails exist, each rail has a max 20A per ATX standard.
Though, there are 12V single source / single rail ATX PSU's. I can only assume that this single rail has a high Amp rating.
Ummm... the 20A per rail limit was lifted with the latest (ATX12V v2.3) version of ATX spec, way back in 2007. Either way, I'm curious if there's an ATX that supplies high W, 600-1000W, on 12V.
Almost any contemporary PSU design will allow you to draw almost all rated power off 12V rail(s), e.g. the XFX Core Edition Pro 850W allows up to 840W. The design feature you should look for is known as DC-to-DC conversion: almost 100% of the PSU's rated power (excluding 5V standby and -12V rails) is being converted to +12V internally. 5V and 3.3V rails are converted from that so as long as you don't load those rails you're free to use as much 12V juice as the PSU is capable of. |
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...I still stand by my point that you are overstressing your motherboard way beyond what is was designed for though...
Preach to the choir, P4 The fact that he has two such boards and one has been running ok might indicate that the PCIe GPU power load is dangerously close to the design limit, a combination of four highly overclocked 5870 might be an edge case here. At least use powered adapters for two of those four cards, this way you'll only need to purchase four adapters for both rigs - not a huge expense by any stretch of imagination. |
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I haven't tried to terminal run anything as I'm pretty much a Linux noob.
Very well then, try this: (1) with the USB stick inserted, boot up the system (2) when you reach Xubuntu desktop, press the [Alt]+[F2] combination (3) type xterm in the window that pops up (4) a text-mode window will launch, that's the terminal (5) issue the command sudo cat /proc/mounts | grep cdrom You should see a line beginning with something like , this will tell you which device is mounted as /cdrom fdisk -l will give you plenty of info about mounted devices and filesystems, feel free to upload the output if it seems arcane. If you want to see the contents of the device mounted as /cdrom, type |
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This is probably not a good idea. No way that mATX motherboard was designed to deliver that much power to the PCIe slots.
Remove one or two cards, and see if it runs stable. If it does, you are going to need powered risers.
Roger that, the board has just one PCIe x16 slot and three PCIe x1 slots clearly not having been engineered for multi-GPU computing. The fact of the matter is, only PCIe graphic cards are allowed to draw up to 75W per slot - all other PCIe devices are limited to 25W. Do note that motherboards officially supporting triple- or even quadruple GPUs are equipped with additional power connectors for powering the cards up. Fitting multiple PCIe x16 slots can be regarded as a kind of declaration by the manufacturer. A typical mini-ATX board is what it is - an inexpensive piece of equipment meant for low-power PCs. Did your combination of 5870s ever work in a stable fashion with this board? Don't worry about that umount nonsense, the persistent liveusb version which you must be running is mounted as /cdrom. While the system is running try issuing the command cat /proc/mounts | grep cdromThe result will point to your usb drive (/dev/sd*) |
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AMD needs a new company motto. AMD: dragging customers through mud every single time.
BECAUSE WE CAN®Really, the driver team are outdoing their normal selves. |
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I'll just leave this here <pic> What am I looking at? Which particular PSU does this efficiency table apply to? Please update your post with additional info. |
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Various XFX models are manufactured by Seasonic and all feature DC-to-DC conversion. Whether you go with XFX Core or Pro product line is irrelevant, the only difference are modular connectors.
The XFX 1000W Pro Series 80 Plus Platinum is built on the same platform as Seasonic 1000W Platinum and is a great PSU indeed.
XFX units are cheaper than their Seasonic-branded counterparts but tend to come with no extras like cable ties or pouches for unused cables. Warranty period is 5 years long.
I regard these as higher value alternatives to the excellent Seasonic-branded PSUs.
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Windows is a very interesting OS. On one hand GPU drivers have been moved to the userland while on the other, menial tasks like font parsing are still being done at kernel level ( consequence). |
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Great, thanks.
How about a version capable of a "single" mode where it downloads the data, displays it for a couple of seconds and exits?
That would allow ObiWan to be launched via the extra keys of various "multimedia" keyboard layouts.
Just add a commandline parameter for that.
Also, I'd prefer to dedicate tilde (~) rather than CapsLock to display the exchange rate.
Other than that, I do like the app.
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Ummm... why exactly does the app have to download and re-create the whole MtGox homepage every 15 seconds? We're talking of a 20 kB file here, that's just under 5 MB worth of unnecessary bandwidth and disk writes per hour or 1.7 GB per month assuming the PC is running 12/7. That's sloppy engineering if I ever saw one and I'm sure MtGox doesn't think much of it either. Surely, you could get away with much less data? The only good thing I can say is that ObiWan didn't try to grab the honeypot wallet.dat I prepared  12btc.html: <!DOCTYPE html>
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<li id="lastPrice">Last price:<span>$4.95980</span></li>
<li id="highPrice">High:<span>$4.98421</span></li>
<li id="lowPrice">Low:<span>$4.82129</span></li>
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<h1>Trade with confidence on the world's largest Bitcoin exchange!</h1>
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<ul><li><a href="https://mtgox.com/press_release_20120221.html" target="_blank">Mt.Gox's February 21st, Downtime Explanation</a></li><li><a href="https://support.mtgox.com/entries/20986081-important-notice-alleged-bitscapler-user-data-leak" target="_blank">[Important Notice] Alleged Bitscapler user data leak.</a></li><li><a href="https://mtgox.com/press_release_20120215.html" target="_blank">Over 1,500 Yubikeys shipped worldwide (and counting)!</a></li><li><a href="https://mtgox.com/press_release_20120201.html" target="_blank">Mt.Gox overview: January 2012 / Transparency</a></li><li><a href="https://mtgox.com/press_release_20111219.html" target="_blank">Trading with Mt.Gox has never been cheaper!</a></li><li><a href="https://mtgox.com/press_release_2011_12_01" target="_blank">Press Release - Mt.Gox: Reloaded</a></li><li><a href="https://mtgox.com/fee-schedule/" target="_blank">Mt.Gox Lowers Trade Fees, New Volume Discounts</a></li><li><a href="https://support.mtgox.com/entries/20395323-mt-gox-now-verified-by-verisign/" target="_blank">Mt.Gox (K.K Tibanne): Now Verified by VeriSign</a></li><li><a href="https://support.mtgox.com/entries/20402621-ongoing-phising-attacks-on-mt-gox-users" target="_blank">Ongoing Phishing Attacks on Mt.Gox Users</a></li><li><a href="https://yubikey.mtgox.com/" target="_blank">Get your Yubikey now (be sure to log in)</a><br /></li></ul><br />
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I've installed 8.95.0.0 driver, the pre-certified catalyst http://support.amd.com/us/kbarticles/Pages/AMDCatalystSoftwareSuiteVersion122PreCertified.aspxDriver Packaging Version 8.95-120214a-133662E-ATI AB (beta14) cannot change the values in the BIOS, but I run cgminer with bin from run on older driver and I can run 1177/685. I cannot change the memory clock but I can run it @ 685 So the hack is to downgrade, run cgminer, upgrade, re-run cgminer with its bin from previous run. That's good info, thanks. AMD is doing everything they can to drag users through mud... |
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are now publicly available. Coupled with AMD drivers(1), it could make a free Windows-based mining platform. Anyone interested in playing with this? Notes: (1) Latest version of AMD drivers for Windows 8 Preview doest not support hd7000 series cards yet. 7xxx owners please stay tuned, update should be available within a couple of weeks. |
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Exact specs haven't even been "leaked" (although companies now have timelines for their "leaks") yet. No way it is March 6th. Gamers need time to commit to $850 and specs, and early previews, websites talking about they have one but are NDA until March XX, etc. None of that has happened and usually all that occurs weeks (plural) prior to release date.
Roger that. What we may expect is the release date to be announced at CeBIT. I expect that date to be a few months away, though. |
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Ummm... the pool has been down since 12:02 UTC.
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I heard a rumor that March 6th is the release date. Anybody know if this is true?
Yeah. That is what I heard too. Are you guys kidding? This is the release date of the 78xx series. |
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Oh yeah that is the list you want when buying and remember capacitors age with use so that 1000w new PS is not going to be putting out 1000w next year or even six months later.
I beg to differ. Correct voltage levels are being maintained by a supervisor circuit and I can pretty much guarantee that they won't change in a year. The maximum achievable current depends mostly on rectifying bridges and mosfets. They won't degrade within a year or two unless you seriously overload them, and protective circuitry should preclude you from doing so. If the PSU feels it's in trouble, it'll just power down. Worn out capacitors will result in increased ripple and noise (electrical noise, not audible noise) but that won't happen within a one (or even two) year timeframe. Capacitors are used for filtering only and by themselves have nothing to do with voltage levels or maximum current. Maintaining a 200W buffer space is a very prudent approach, except not for the reasons you specified. |
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