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Author Topic: On a scale of 1 to 10, how bad of an idea is this?  (Read 1833 times)
SuperZac
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April 13, 2013, 02:58:55 AM
 #1

I have it in my head to build a super cheap mining rig. I'm not kidding about super cheap.
Before I say any more, this is my spec list. Don't panic and call the fire department.

Raygo MT MicroATX Computer Case and OEM 600W ATX
http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=7730413&CatId=1509

Intel 775 motherboard combo Pentium D 3.2 GHz 1GB DDR Memory Intel D946GZIS
http://www.ebay.com/itm/Intel-775-motherboard-combo-Pentium-D-3-2-GHz-1GB-DDR-Memory-Intel-D946GZIS-/330905987847?pt=US_Motherboard_CPU_Combos&hash=item4d0b88ab07

Sapphire Radeon HD 7850 11200-16-20G Video Card - 1GB
http://www.tigerdirect.com/applications/searchtools/item-details.asp?EdpNo=5273329&SRCCODE=WEBGOOPA&cm_mmc_o=mH4CjC7BBTkwCjCV1-CjCE&gclid=CJ_Eyv3fwLYCFeR_QgodPE0ARg


Feel free to give me a virtual slap to the face to make me come to my senses if necessary.
Please know that I'm not really doing this for profit, I'm doing it because a. cryptocurrency is the future and I want to participate and b. I love building and messing around with computers.

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chondrite
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April 13, 2013, 03:06:28 AM
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You can almost double your profits by spending 300 on a 7950 (~600 kh/s) instead of 160 on a 7850 (~320).  You'd also have a card that will be easier to sell back in the future (IMO) as the 7950 is a much superior video card.  The 7850 w/o crossfire is already struggling on some of the newer PC games.
SuperZac
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April 13, 2013, 03:50:10 AM
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You can almost double your profits by spending 300 on a 7950 (~600 kh/s) instead of 160 on a 7850 (~320).  You'd also have a card that will be easier to sell back in the future (IMO) as the 7950 is a much superior video card.  The 7850 w/o crossfire is already struggling on some of the newer PC games.

I might do that. I just have to wait a bit longer to get enough. I'm still using my trusty old 560ti for games Smiley

So you think the other parts are fine? Will I need more RAM? RAM is cheap as chips, so I don't mind that.

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DrG
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April 13, 2013, 06:40:58 AM
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You can almost double your profits by spending 300 on a 7950 (~600 kh/s) instead of 160 on a 7850 (~320).  You'd also have a card that will be easier to sell back in the future (IMO) as the 7950 is a much superior video card.  The 7850 w/o crossfire is already struggling on some of the newer PC games.

I might do that. I just have to wait a bit longer to get enough. I'm still using my trusty old 560ti for games Smiley

So you think the other parts are fine? Will I need more RAM? RAM is cheap as chips, so I don't mind that.

The PSU in the link you provided is crap.  Look at the 12V ratings.  First it is split into 2 12v rails. 2nd, each rail provides only 20Amps.  Unless you're a pro always try to get a single rail PSU.  My Antec Neo Eco 520W PSUs put out more 12V power than that crappy 600W.

If you don't absolutely need the case, I would say just build an open system (assuming no kids or pets).  You can have it mine on top of a cardboard box no problem.  Spend the $60 on a good PSU.  A quality 600W PSU would be able to power 2 7950s no problem.  This crappy one might even choke after 3 months of 24/7 just running one 7950.  I guarantee it will not be quiet or efficient.  Plus it would have crappy ripple leading to instability in overclock.  Bottom line the PSU is the most important part, more than the card.

2nd, the mobo/cpu is fine, only problem is 1GB of DDR.  You would need to to run Win 7 x64.  So either run 32 bit or go to Win XP or Linux.

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middlemarkal
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April 13, 2013, 03:41:58 PM
 #5

Don't go tu Xp unless you use an old 11 séries driver AMD does not support OPEN CL in newer driver

look at this : https://bitcointalk.org/index.php?topic=163306.0
SuperZac
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April 14, 2013, 12:47:56 AM
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Thanks both of you. I can't do the crate case because I have a lot of cats that jump on everything... But I will definitely get a good quality PSU.

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DrG
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April 14, 2013, 02:49:24 AM
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If you have a cat (same as me with kids) then you probably need to have a closed case.  With a closed case you probably don't want to go dual cards unless you live in a cool area or are good with ventilating a case.  Pick a 7950 or 7970 as a single card.  A reference card is great for closed cases since they blow the hot air out the back.

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GernMiester
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April 14, 2013, 05:10:16 AM
 #8

Get a better power supply with the thought of adding a 2nd card one day. 
Buy the cheaper card now start mining.. 
save up buy best 2nd card you can get...
profit?Huh
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