someotherguy (OP)
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February 27, 2011, 04:27:51 PM |
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I plan to run 4 HD5970's on a water cooling, what is the best motherboard for this for the price?
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qed
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February 27, 2011, 04:54:13 PM |
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In the time you'll set up the new hardware difficulty will rise by another 40% average. Buying _now_ hardware to mine isn't the best idea ever.
That system with watercooling will easily be over 3000 Euro.
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someotherguy (OP)
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February 27, 2011, 05:26:01 PM |
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In the time you'll set up the new hardware difficulty will rise by another 40% average. Buying _now_ hardware to mine isn't the best idea ever.
That system with watercooling will easily be over 3000 Euro.
I already have a system running just upgrading cards and motherboard.
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aistto
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February 27, 2011, 08:23:13 PM |
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aistto
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February 27, 2011, 08:27:14 PM |
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or Giga-Byte GA-890FXA-UD7 <SAM3, AMD 890FX, 4*DDR3, 6*PCI-E16x, SATA RAID, 2*GB Lan, XL-ATX
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eserge
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February 27, 2011, 09:33:39 PM |
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As far as I know you can't set 4 5970s in one system since each of them already has 2 GPUs onboard.
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dust
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February 27, 2011, 10:06:04 PM |
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As far as I know you can't set 4 5970s in one system since each of them already has 2 GPUs onboard.
It is certainly possible, some people around here have done it. I think only the linux drivers support 8 GPUs. Regardless, going with 2 5970's per computer is probably the more cost effective option.
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JWU42
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February 27, 2011, 10:08:26 PM |
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Regardless, going with 2 5970's per computer is probably the more cost effective option.
Agreed... Just what kind of PSU (would one handle it) would you need for quad 5970s?
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reflex99
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February 27, 2011, 10:44:07 PM |
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for dual 5970s, you shouldn't need more than 950ish watts. A good cost effective board would be something like the gigabyte 890GPA-UD3HI had one, very nice board for the $$$
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qed
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February 28, 2011, 12:41:30 AM |
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We already passed the point where buying hardware was profittable.
I did the computation for myself. Adding a new video card (only the card), a good bitcoin generation/dollar one, will not pay for itself. I didn't count the electricity.
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JWU42
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February 28, 2011, 01:08:24 AM |
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We already passed the point where buying hardware was profittable.
I did the computation for myself. Adding a new video card (only the card), a good bitcoin generation/dollar one, will not pay for itself. I didn't count the electricity.
Agreed - as fast as the difficulty is changing now it isn't worth it. Now - if you were doing this 4 months ago - maybe so...
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someotherguy (OP)
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February 28, 2011, 01:16:34 AM |
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Regardless, going with 2 5970's per computer is probably the more cost effective option.
Agreed... Just what kind of PSU (would one handle it) would you need for quad 5970s? 2 x 750w PS should just fine
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JWU42
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February 28, 2011, 01:55:20 AM |
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Yeah - that would seem best... I am not wise enough to figure how to get two PSUs to supply a single system
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qed
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February 28, 2011, 03:07:51 AM |
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Yeah - that would seem best... I am not wise enough to figure how to get two PSUs to supply a single system You can't. A 450W PSU it's around 40$, 2x450W = 900W would be 80$. Why the hell would someone pay over 130$ for something he could get for 80$. The only thing you _MAY_ try is to use 1 PSU to power 2 video cards. The different load will cause different voltages and most likely system instability, it may even burn the card VRM.
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Cdecker
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February 28, 2011, 12:28:26 PM |
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Looks pretty sophisticated, anyone tried that direct PSU feeding trick yet? I can't seem to understand what connectors he's connecting to and to which PSU plug it is hooked up.
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Cdecker
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February 28, 2011, 09:56:27 PM |
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So he's connecting 5 cards, by taking the powerlines of the respective extender cables and soldering them into _one_ molex female plug, and them he plugs it into the power supply? Or does he use a molex from the PSU for each card?
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marcus_of_augustus
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Eadem mutata resurgo
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February 28, 2011, 10:18:53 PM |
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He spells it out in good detail if you read it carefully.
4 hd5970 cards, 1 mobo. 4 PCi-e extender ribbon cables, each one modified to have 5 12V cores soldered into 1 12v (yellow) 16AWG from PSU ... it doesn't really matter what connectors you use if you know what you are doing.
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