What OS are you running? Here is a thread that has helped some Windows users.
https://litecointalk.org/index.php?topic=11761.0
Topic: 6 GPU Sapphire Tri-X R9 290 OC (non-x) Rig - page 3. (Read 5969 times)
I have made some rigs with same cards.
But my motherboard only recognize 5 of them.
And I have this problem on all my rigs, so it isn't a card problem.
I have 2 power supply bequiet 1200W.
An idea for install the card number 6 ?
But my motherboard only recognize 5 of them.
And I have this problem on all my rigs, so it isn't a card problem.
I have 2 power supply bequiet 1200W.
An idea for install the card number 6 ?
I'm not sure I follow exactly. I'm hoping someone has actual load data on these cards in action.
I think Tom's Hardware is pretty optimistic so I've increased what they say up to 300W for my estimations. I was expecting to run the 850W with 2 GPUs plus board load. I'm thinking that should be 300*2+150=750W (750/850=88% load). Then the 4 cards on the 1300W would be 4*300=1200W (1200/1300=92% load). Am I on the right track?
I think Tom's Hardware is pretty optimistic so I've increased what they say up to 300W for my estimations. I was expecting to run the 850W with 2 GPUs plus board load. I'm thinking that should be 300*2+150=750W (750/850=88% load). Then the 4 cards on the 1300W would be 4*300=1200W (1200/1300=92% load). Am I on the right track?
I have the same PSU and Mobo combo.. Had some issues with the EVGA not firing the BTC-81 if I connected the Molex to the mobo. I'd test this right away when you get your CPU and ram installed. I am RMA'ing the PSU so just a heads up it may just be a defective unit i've been dealing with.
As far as risers go, you only need 1X regular risers.. The Molex takes care of the rest unless you want to add 1-2 powered 1x risers just to be safe. PSU #1 should power the mobo, cpu, molex and up to 3 GPU's. GPU 4,5,6 should be powered by a second 1000-1200w PSU. This setup will give you both breathing room and the ability to expand/adjust if you are able to drop voltages on the cards.
As far as risers go, you only need 1X regular risers.. The Molex takes care of the rest unless you want to add 1-2 powered 1x risers just to be safe. PSU #1 should power the mobo, cpu, molex and up to 3 GPU's. GPU 4,5,6 should be powered by a second 1000-1200w PSU. This setup will give you both breathing room and the ability to expand/adjust if you are able to drop voltages on the cards.
Sgminer is a fork of cgminer, and is actively being developed specifically for scrypt mining. cgminer is more well known, but no longer supports scrypt, so people are stuck using an old 3.7.2 version.
As long as those PSU's can actually push that much power than you should be fine.
As long as those PSU's can actually push that much power than you should be fine.
Thanks. Are you running this same card? What kind of hash rates are you getting? As for electrical, I'm installing this system in my basement near the panel and am adding two additional 20A breakers to feed it.
2150W of combined power should be sufficient, but you will need to take into consideration your home electrical capability. Powered risers is unnecessary and x16 to x16 would not make any difference. In Windows you can use CGWatcher and CGRemote, as well as have the rig function as a server such as NAS or FTP. Found higher hashrate with SGMiner in conjunction with optimized .CL and .BIN. There are many multipool comparisons people have done.
Hey everyone. I've been lurking for a while and finally gave into the mining bug. I have parts coming to build a 6 GPU dedicated mining rig, and being a newbie, I have a few questions. First I'll outline the parts I've ordered and if you see problems, I'd like to hear about them.
6x Sapphire Tri-X R9 290 OC
1x ASRock H81 Pro BTC Motherboard
1x Intel Pentium Dual-Core G3220
1x 8GB Kingston HyperX Blu RAM
1x EVGA SuperNOVA 1300G2 1300W Power Supply
1x Corsair RM Series 850W Power Supply decided to upgrade
1x Seasonic X-1050 1050W Power Supply
1x Dual PSU Adapter Cable
4x Powered 1x to 16x Riser Cables
2x Powered USB Riser Cables
1x Power Switch
Now for the questions:
1. Power Supplies
Does anyone see any issues with my power supply selection? I've been trying to get a good idea of the actual power draw of these cards. I've seen everything from <225W (Tom's Hardware (link)) to over 300W. The guys at Bits be Trippin' just posted a video (link) with 6 280X Toxic cards that were pulling enough for them to install 2x1000W + 1x600W. So now I'm nervous that I won't have enough power supply. My plan is to install one card at a time using the 1300W PSU until I hit about 1000W on the KillAWatt, then install the second PSU and continue adding cards to the850W 1050W while checking loads on both PSUs. Seem logical? Does anyone with a similar build have hard data to share regarding what their power draw is?
2. Riser Cables
In the Bits Be Trippin' build linked above (1:30), they recommend using the 2 4-pin molex connectors and leaving all the powered risers disconnected from power. Thoughts? Lastly, as shown in my build list, I didn't order a 16x to 16x riser. Was that a mistake? Is it necessary to have one?
3. Operating System
This probably belongs in a separate post, but I'll ask here anyway. What operating system is preferred for this type of build? I found this thread (link), but it doesn't really offer any solid answer. I have no Linux experience, but am not afraid of learning. I've been leaning towards Litecoin BAMT v1.5 or SMOS v1.3 (with auto-donate disabled). It seems a lot of people are using Win 8.1. What are the pros and cons of the different OS options? My end goal is to be able to access and control the rig while I'm away from home and outside of my local network. I assume Logmein or TeamViewer would work with Win 8.1, but I'm not sure how to accomplish this with a Linux based OS. This will be a dedicated mining machine with no need for NAS etc. I just want a stable work horse that doesn't need to be babysat.
4. Mining Software
It seems like cgminer is the common choice. On the surface it seems like sgminer would be the better option for me. Thoughts?
5. Mining Pools
I haven't seen anyone try this, so I assume there is a good reason. As everyone knows, there are several options for coin switching pools with profitability algorithms. Which is best? That is very fuzzy. Why not do a side-by-side comparison with a multi-gpu rig and point each card to a different pool for a few weeks? Then at the end of the test report the difference in profitability?
Edit: I see this is being done already. (link)
I apologize for the long post and numerous questions. Thanks in advance for the advice!! I'm still waiting on a few parts to show up, but will post pics as I make some progress.
6x Sapphire Tri-X R9 290 OC
1x ASRock H81 Pro BTC Motherboard
1x Intel Pentium Dual-Core G3220
1x 8GB Kingston HyperX Blu RAM
1x EVGA SuperNOVA 1300G2 1300W Power Supply
1x Seasonic X-1050 1050W Power Supply
1x Dual PSU Adapter Cable
4x Powered 1x to 16x Riser Cables
2x Powered USB Riser Cables
1x Power Switch
Now for the questions:
1. Power Supplies
Does anyone see any issues with my power supply selection? I've been trying to get a good idea of the actual power draw of these cards. I've seen everything from <225W (Tom's Hardware (link)) to over 300W. The guys at Bits be Trippin' just posted a video (link) with 6 280X Toxic cards that were pulling enough for them to install 2x1000W + 1x600W. So now I'm nervous that I won't have enough power supply. My plan is to install one card at a time using the 1300W PSU until I hit about 1000W on the KillAWatt, then install the second PSU and continue adding cards to the
2. Riser Cables
In the Bits Be Trippin' build linked above (1:30), they recommend using the 2 4-pin molex connectors and leaving all the powered risers disconnected from power. Thoughts? Lastly, as shown in my build list, I didn't order a 16x to 16x riser. Was that a mistake? Is it necessary to have one?
3. Operating System
This probably belongs in a separate post, but I'll ask here anyway. What operating system is preferred for this type of build? I found this thread (link), but it doesn't really offer any solid answer. I have no Linux experience, but am not afraid of learning. I've been leaning towards Litecoin BAMT v1.5 or SMOS v1.3 (with auto-donate disabled). It seems a lot of people are using Win 8.1. What are the pros and cons of the different OS options? My end goal is to be able to access and control the rig while I'm away from home and outside of my local network. I assume Logmein or TeamViewer would work with Win 8.1, but I'm not sure how to accomplish this with a Linux based OS. This will be a dedicated mining machine with no need for NAS etc. I just want a stable work horse that doesn't need to be babysat.
4. Mining Software
It seems like cgminer is the common choice. On the surface it seems like sgminer would be the better option for me. Thoughts?
I haven't seen anyone try this, so I assume there is a good reason. As everyone knows, there are several options for coin switching pools with profitability algorithms. Which is best? That is very fuzzy. Why not do a side-by-side comparison with a multi-gpu rig and point each card to a different pool for a few weeks? Then at the end of the test report the difference in profitability?
Edit: I see this is being done already. (link)
I apologize for the long post and numerous questions. Thanks in advance for the advice!! I'm still waiting on a few parts to show up, but will post pics as I make some progress.
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