Date: Thu, 5 Mar 2020 19:53:17 +0100 From: Albert Veli <albert.veli@...il.com> To: john-users@...ts.openwall.com Subject: Re: ZTEX 1.15y boards for sale Hello, I bought three ZTEX boards from this seller. On Thu, Feb 13, 2020 at 12:14 AM Solar Designer <solar@...nwall.com> wrote: > > Here's a picture of most of them: > https://atw.hu/~koszik/a/ztex.jpg " > > Some boards on this picture look like ZTEX original, most others look > like compatible US clones - but either kind should work fine with JtR. > > This was a while ago indeed, but now there's an eBay lot where someone > also from Hungary (the same person?) offers these boards for $90 each: > > > https://www.ebay.com/itm/ZTEX-1-15y-Quad-Spartan-6-LX150-FPGA-Board-with-USB-2-miner-password-cracker/274232497040 > > "ZTEX 1.15y Quad Spartan 6 LX150 FPGA Board with USB 2 - miner, password > cracker > > Condition: Used > there may be some dust on the device. if there are fans, those may need > replacement. functionally tested, works as expected. > > One original ZTEX board and two clones. All three worked great with john. I just had to replace some of the fans and remove some dust. Did not try to overclock, just used the default frequency. When loading the bitstream I got a timeout error but the boards seems to work anyway. The downside is I payed shipping for all three cards even though they were sent in the same package. On the other hand I got all cables and spacers needed to get the boards running and that was worth the extra shipping cost. 12V DC from a PSU (standard desktop computer power supply). Each board uses up to 40w of power, less for most formats. So one PSU capable of at least 150w is enough to feed all three boards. It is probably a good idea not to use more than maybe 80% of the max power from the PSU. So a 750w PSU could feed around 15 boards. To use the PSU without a motherboard it is probably necessary to use a paper clip to bridge two pins, like in this picture: https://gpushack.com/blogs/news/43997828-psu-paper-clip-test Regards, Albert
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