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Author Topic: X6500 Custom FPGA Miner  (Read 208000 times)
hashking
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March 05, 2012, 07:53:00 PM
 #681

In the description it says to use a wal-wart power adapter.  Does anyone have a direct link to the one that will work.  

This one works well: http://cablesaurus.com/index.php?route=product/product&product_id=50

To be clear, though, you can use either a wall-wart adapter or a 4-pin Molex connector from a standard ATX power supply. The wall-wart should work well for running a single board, but I recommend using a standard PSU if you have more than one because they are so much more efficient. You can run a lot of X6500s on this one, for example, with great efficiency: http://www.newegg.com/Product/Product.aspx?Item=N82E16817371033

If the PSU isn't also powering a computer, you'll need to modify it or pick up one of the dummy connectors from Cablesaurus: http://cablesaurus.com/index.php?route=product/product&product_id=45

Can I just plug the molex adapter from the psu in or does it need to be modified.
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fizzisist
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March 05, 2012, 10:16:48 PM
 #682

In the description it says to use a wal-wart power adapter.  Does anyone have a direct link to the one that will work. 

This one works well: http://cablesaurus.com/index.php?route=product/product&product_id=50

To be clear, though, you can use either a wall-wart adapter or a 4-pin Molex connector from a standard ATX power supply. The wall-wart should work well for running a single board, but I recommend using a standard PSU if you have more than one because they are so much more efficient. You can run a lot of X6500s on this one, for example, with great efficiency: http://www.newegg.com/Product/Product.aspx?Item=N82E16817371033

If the PSU isn't also powering a computer, you'll need to modify it or pick up one of the dummy connectors from Cablesaurus: http://cablesaurus.com/index.php?route=product/product&product_id=45

Can I just plug the molex adapter from the psu in or does it need to be modified.


No modification needed to the connector itself, but the PSU needs to have the ENABLE pin pulled to ground. This is what a motherboard will do, to turn on the PSU when it wants it on (when you press the power switch) but if you're using the PSU standalone, you need to do that yourself. This is what the dummy plug from Cablesaurus does for you. The molex connector itself can be used as is.

By the way, the original (rev 2) X6500 used the 5V rail from the Molex connector, but the new X6500s (rev 3) take power from the 12V connector.

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March 05, 2012, 10:37:10 PM
 #683

If the PSU isn't also powering a computer, you'll need to modify it or pick up one of the dummy connectors from Cablesaurus: http://cablesaurus.com/index.php?route=product/product&product_id=45

Holy crap! $17 for a connector with a whole 2 pins connected? People pay for that!?
Yeah, think I'll make do with a paperclip and some electrical tape.
Sheesh.
hashking
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March 05, 2012, 10:42:09 PM
 #684

In the description it says to use a wal-wart power adapter.  Does anyone have a direct link to the one that will work. 

This one works well: http://cablesaurus.com/index.php?route=product/product&product_id=50

To be clear, though, you can use either a wall-wart adapter or a 4-pin Molex connector from a standard ATX power supply. The wall-wart should work well for running a single board, but I recommend using a standard PSU if you have more than one because they are so much more efficient. You can run a lot of X6500s on this one, for example, with great efficiency: http://www.newegg.com/Product/Product.aspx?Item=N82E16817371033

If the PSU isn't also powering a computer, you'll need to modify it or pick up one of the dummy connectors from Cablesaurus: http://cablesaurus.com/index.php?route=product/product&product_id=45

Can I just plug the molex adapter from the psu in or does it need to be modified.


No modification needed to the connector itself, but the PSU needs to have the ENABLE pin pulled to ground. This is what a motherboard will do, to turn on the PSU when it wants it on (when you press the power switch) but if you're using the PSU standalone, you need to do that yourself. This is what the dummy plug from Cablesaurus does for you. The molex connector itself can be used as is.

By the way, the original (rev 2) X6500 used the 5V rail from the Molex connector, but the new X6500s (rev 3) take power from the 12V connector.

Ok that clears it up,  I was reading your first post and it was talking about modifying a molex connector to make it work.  I have a bunch psu's so power won't be a problem.  Thanks.

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March 05, 2012, 11:19:23 PM
 #685

In the description it says to use a wal-wart power adapter.  Does anyone have a direct link to the one that will work. 

This one works well: http://cablesaurus.com/index.php?route=product/product&product_id=50

To be clear, though, you can use either a wall-wart adapter or a 4-pin Molex connector from a standard ATX power supply. The wall-wart should work well for running a single board, but I recommend using a standard PSU if you have more than one because they are so much more efficient. You can run a lot of X6500s on this one, for example, with great efficiency: http://www.newegg.com/Product/Product.aspx?Item=N82E16817371033

If the PSU isn't also powering a computer, you'll need to modify it or pick up one of the dummy connectors from Cablesaurus: http://cablesaurus.com/index.php?route=product/product&product_id=45

Can I just plug the molex adapter from the psu in or does it need to be modified.


No modification needed to the connector itself, but the PSU needs to have the ENABLE pin pulled to ground. This is what a motherboard will do, to turn on the PSU when it wants it on (when you press the power switch) but if you're using the PSU standalone, you need to do that yourself. This is what the dummy plug from Cablesaurus does for you. The molex connector itself can be used as is.

By the way, the original (rev 2) X6500 used the 5V rail from the Molex connector, but the new X6500s (rev 3) take power from the 12V connector.

Ok that clears it up,  I was reading your first post and it was talking about modifying a molex connector to make it work.  I have a bunch psu's so power won't be a problem.  Thanks.



It wasn't to "make it work".  The Rev. 2 boards pulled power from the 5v rail as designed.  The molex mod was to switch the power feed from the 5v rail to the 12v rail.  This was done because most of the modern PSUs can supply far more power on the 12v rail than the 5v rail.  They will work on either the 5v or 12v supply.

12Um6jfDE7q6crm1s6tSksMvda8s1hZ3Vj
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March 05, 2012, 11:50:24 PM
 #686

It wasn't to "make it work".  The Rev. 2 boards pulled power from the 5v rail as designed.  The molex mod was to switch the power feed from the 5v rail to the 12v rail.  This was done because most of the modern PSUs can supply far more power on the 12v rail than the 5v rail.  They will work on either the 5v or 12v supply.

Yes, exactly. Thanks for adding this clarification.

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March 06, 2012, 12:29:30 AM
 #687

It wasn't to "make it work".  The Rev. 2 boards pulled power from the 5v rail as designed.  The molex mod was to switch the power feed from the 5v rail to the 12v rail.  This was done because most of the modern PSUs can supply far more power on the 12v rail than the 5v rail.  They will work on either the 5v or 12v supply.

Yes, exactly. Thanks for adding this clarification.

Well, if you dig back through the thread, I was the one who wanted it on the 12v rail not the 5v.  Causing the molex mod post, causing his confusion.  So I just figured I would clarify it.   Roll Eyes

To bad every time I get some cash together to buy these damn things, something else eats my money up.  It's seriously starting to piss me off.   Undecided


12Um6jfDE7q6crm1s6tSksMvda8s1hZ3Vj
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March 06, 2012, 06:15:44 AM
 #688

Skimming through the thread, I see photos from:
...
bitcowok (and here)
....
Would you folks be ok with your pics posted on fpgamining.com? If so, and you want to have a little blurb or some other info about it you would like to share, please let me know!

Yep no probs. go for it.
99Percent
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March 06, 2012, 07:13:04 AM
 #689

I have no problems using my photos either.
coretechs
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March 06, 2012, 09:28:16 PM
 #690



Much better.  I might make a hood for it out of cardboard or something, but there is good airflow over the top and bottom of all the boards as it sits.  I used 1 1/8 in. standoffs ($6 for a pack of 25 on Amazon, might be cheaper elsewhere) that seem to be almost the perfect height for using 2x 80mm fans.

edit: +1 piece of card stock Smiley



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March 06, 2012, 10:26:35 PM
 #691

Simple and effective, I like it.  The standoffs didn't brake on you?  I got a set of the plastic ones also, but I think I over tightened them or something cause I broke the threads off of two.

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March 09, 2012, 01:51:45 AM
 #692

The boards are here!

I'll take a couple pics and start some basic tests tonight!

hashking
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March 09, 2012, 10:20:47 AM
 #693

How's the deadline looking on completion of the next batch of boards.
fizzisist
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March 09, 2012, 10:26:01 AM
 #694

As promised, pics:





And, they're mining!



Those heatsinks are just for testing. Hopefully we'll have a decision on what heatsinks to use very soon. If that takes too long, the first boards available will be without heatsinks, letting you supply your own.

hashking
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March 09, 2012, 10:30:45 AM
 #695

Nice, thanks for the quick responce, your customer service skills are great.  Unlike some of your other competitors.  I won't say their name.   Grin
fizzisist
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March 09, 2012, 10:36:17 AM
 #696

Nice, thanks for the quick responce, your customer service skills are great.  Unlike some of your other competitors.  I won't say their name.   Grin

Heh, just a coincidence really. Smiley I was writing that when you posted. My best estimate? Heatsink-less in about a week, with heatsinks in two weeks. We'll do our best to make that happen!

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March 09, 2012, 10:38:30 AM
 #697

Hi fizzisist,

might you please tell me how the black heatsinks with fans are called and who sells them ?

Would be interested in this profile for another experiment.

fizzisist
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March 09, 2012, 10:48:58 AM
 #698

Hi fizzisist,

might you please tell me how the black heatsinks with fans are called and who sells them ?

Would be interested in this profile for another experiment.

No problem! They're these, or some knockoff of that: http://www.deepcool-us.com/Product/NBRIDGE2/

You'll see them everywhere when searching for "chipset" or "northbridge" heatsinks.

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March 09, 2012, 11:04:44 AM
 #699

Newegg has them in red:

http://www.newegg.com/Product/Product.aspx?Item=N82E16835999020


LOGISYS CORPORATION is North American Source
Website: www.elogisys.com
http://www.deepcool-us.com/Where_to_Buy/#map_show

Refer friends and earn 25%!

http://offers.coinad.com/?r=3
Pipesnake
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March 09, 2012, 02:47:51 PM
 #700

Unlike some of your other competitors.  I won't say their name.   Grin
Nor are they 4 months behind....
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