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Ive got a second hand 775 mobo coming this week and I allready own a 5850, is this bitcoin thing for real? If so I might have to give it a blast lol
Cheapest rig for cross fired 5870's
- Thread starter Gullanian
- Start date
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Do me a favour pal. Ping me an email as to how you do it, use my trust mail would you. Do you use windows or linux?
Buying bitcoins is a prime example of Greater Fool Theory- you are buying something with no intrinsic value in the hope that people continue to do so, hence allowing you to sell them on for a greater amount of money.
Producing bitcoins at present seems to be a decent value proposition, but it matches every single descriptor of a market bubble. Make your money before it bursts.
Expansion slots:
1x PCI Express x16 slot (PCIEX16)
1x PCI Express x16 slot (PCIEX8)
1x PCI Express x16 slot (PCIEX4)
2x PCI Express x1 slots
That mobo, I don't know too much about HW, is it possible to have more than 2 5870's? Can I have 5 cards in it? Would it work?
1x PCI Express x16 slot (PCIEX16)
1x PCI Express x16 slot (PCIEX8)
1x PCI Express x16 slot (PCIEX4)
2x PCI Express x1 slots
That mobo, I don't know too much about HW, is it possible to have more than 2 5870's? Can I have 5 cards in it? Would it work?
Caporegime
It only has 3 16X Slots, so thats a maximum of 3 cards.
Caporegime
This has 5 slots - http://www.overclockers.co.uk/showproduct.php?prodid=MB-347-GI&groupid=701&catid=1903&subcat=2046
So you could fit 5 single slot GPU's and assign a worker unit to each one? if your 5770 or what ever card your eying up is dual slot thickness then you wont fit that many on it.
So you could fit 5 single slot GPU's and assign a worker unit to each one? if your 5770 or what ever card your eying up is dual slot thickness then you wont fit that many on it.
Caporegime
It will fit three dual slot thickness GPUS in it, dont try setting them up in a crossfire mode though, hopefully you can give each one a specific bitcoin task to do?
Yeah I can run multiple instances of the generator client on the machine, the client allows you to do this. If it doesn't there are ways as other people have done it with 4 cards apparently.
Ok just speccing it all up now see if I can do it
Ok just speccing it all up now see if I can do it
Soldato
Yes, that 990FX UD5 board will pretty happily fit three dual-slot cards (like the 5870). You would install them in the 1st, 3rd and 5th PCIE slots and they should run at PCIE v2.0 x16, x8, x8 speeds respectively. x8 speed really doesn't bottleneck the 5870 much, this review concludes the performance drop is very small compared to a full x16 speed slot.
That said, with three cards installed in that board, they will be right on top of each other, which will mean that for 24/7 mining you will need to manually crank up the fan speeds to keep the cards cool. If you want to go with a board with more spacing for cards, then you could go for a pentium s1155 cpu and a sandy bridge board like this XL-ATX MSI Big Band Marshall - however - it is quite a bit more expensive.
That said, with three cards installed in that board, they will be right on top of each other, which will mean that for 24/7 mining you will need to manually crank up the fan speeds to keep the cards cool. If you want to go with a board with more spacing for cards, then you could go for a pentium s1155 cpu and a sandy bridge board like this XL-ATX MSI Big Band Marshall - however - it is quite a bit more expensive.
Can that board hold 8 double thickness cards? Or probably only 4?
Caporegime
That will hold four, but its a huge board and needs a huge case to fit it in, unless you are going to setup this system on a piece of wood?
Caporegime
Your spec or basket picture in post#34 isnt working.
Nah it's too expensive anyway, sticking to the one you suggested I think. I'm really torn as to if to buy this or not. Need to decide by the end of the day.
I wish 6990's were in stock, part of the reason I want to do this is have a shot at earning the hardware for free, owning 1 or 2 6990's is better than owning 3 5870's which are pretty much useless outside the scope of mining for me. 1 6990 has a lot of utility afterwards (future proof) as well as better resale value.
I wish 6990's were in stock, part of the reason I want to do this is have a shot at earning the hardware for free, owning 1 or 2 6990's is better than owning 3 5870's which are pretty much useless outside the scope of mining for me. 1 6990 has a lot of utility afterwards (future proof) as well as better resale value.
Caporegime
That specific Antec PSU only fits a few Antec cases, if you are not going to use a case and instead will install this system onto a open rig/wood then not a problem.