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The Altcoin Thread
- Thread starter Dark Shade
- Start date
Well that person selling them for $17 is in the USA. You can also get them for $165 for ten from aliexpress but be warned you are going to wait nearly a full month for delivery from China. They don't get paid until it is delivered so it is not a ripoff but it is very very very very slow.
I think I am having noise problems with the ribbon types, even high quality ones.
Someone suggested wrapping them in foil tape for some emi protection but I am not sure that will actually work.
https://mobile.twitter.com/Newegg/status/421398859525681152?screen_name=Newegg
Bitcoin inc to newegg??
Bitcoin inc to newegg??
Jebus power bill
I found a bigger setup.
R290 x 108 cards
https://bitcointalk.org/index.php?topic=375374.0
Holy cow.
I think you'd need one of those ducts that go over the rig and draw all the air from it to keep that room under 100 degrees.
Check out this clean vertical design because of using those usb risers
http://i879.photobucket.com/albums/ab357/pontiacg5_2010/DSC_0161_zps6919d200.jpg (though upside down motherboard seems like a bad idea thermally)
http://i879.photobucket.com/albums/ab357/pontiacg5_2010/DSC_0165_zps28b6bfba.jpg
http://i879.photobucket.com/albums/ab357/pontiacg5_2010/IMG_20131126_164836_zpsf28bd525.jpg
Though I have been thinking it would be better if you could vertically stack the cards over each other and not blow into each other. I am in warm climate and the cards blowing into each other is a problem. If you could do this vertically, it would be amazing
[ card ]
[ card ]
[ card ]
[ card ]
[ card ]
http://i879.photobucket.com/albums/ab357/pontiacg5_2010/DSC_0161_zps6919d200.jpg (though upside down motherboard seems like a bad idea thermally)
http://i879.photobucket.com/albums/ab357/pontiacg5_2010/DSC_0165_zps28b6bfba.jpg
http://i879.photobucket.com/albums/ab357/pontiacg5_2010/IMG_20131126_164836_zpsf28bd525.jpg
Though I have been thinking it would be better if you could vertically stack the cards over each other and not blow into each other. I am in warm climate and the cards blowing into each other is a problem. If you could do this vertically, it would be amazing
[ card ]
[ card ]
[ card ]
[ card ]
[ card ]
The ribbon cables (think IDE) were designed for parallel communication, not serial, and what like 133 MB/s or so bandwidth?
USB is a serial wire with twisted pairs (for EMI) rated at 500 MB/s. Each PCIe lane is 500 MB/s.
I'd fair to say in my amateur opinion the USBs are a superior solution because of the similarities of the USB and PCIe specs.
that might be the only thing that would make me willing to buy from newegg again. The service from them sucks though so not being capable of threatening to do a chargeback isn't so good.
Now that I'm buying server PSU's I don't know if I need to go to newegg for anything. I guess they tend to have better video card selection than amazon. Now that I'm building around 7850/270's they're not that badly overpriced. I'd certainly buy some motherboards from them because they have such a nice search feature to help find the 3+ 1x slots
I just bought 4x r9 270x's for my mining rigs. Should be here this week sometime, I can't wait to see what they do. The one I have now only draws 145W and does 460khs with no tweaking whatsoever. I figure I can fit 2 of them in my HTPC case as well and it only has a 600W Antec power supply, so I should be good with what little power they draw.
the 7870/270x will get pretty hot when you try to put the cards close. Which model did you get? I'm trying to figure out what my next 4 card rig I'm building will be. I have a 4 7850 and a 4 6950 rig. Once more supplies come I'll get this 3 * 280x rig up to 4 or 5. I'm not really sure what cards I like the most. I'm a big fan of the 6950 but can't get them easily. I'm trying to find a setup I like that I can duplicate.
I have one of these and just ordered 4 more. I'm hoping with a little tweaking I can hit 475-490khs with them and keep the power draw down as much as possible.
I have 1 6970 card as well but I wish i could find more for reasonable prices. It puts out 520khs all day and stays below 75C. All the 6970 cards I've seen on ebay have went for $200-250 the last few weeks. If I could find them for $100-150 it would be ideal IMO.
Huh? When Overstock finally went live with accepting BTC, it was no where near $250.
nvgrim
[H]ard|Gawd
- Joined
- May 1, 2013
- Messages
- 1,747
My 4 gigabyte 270x's stay around 59-60C getting about 480 kh/s on each. my 280x though gets to about 70 and stays there.
Where exactly are the temperature sensors on radeon video cards?
Are they under the gpu? Inside the gpu? Or does it vary depending on the board?
There is too much variation between two brands of 7950 I have which makes me think it is not in or under the gpu but elsewhere?
Are they under the gpu? Inside the gpu? Or does it vary depending on the board?
There is too much variation between two brands of 7950 I have which makes me think it is not in or under the gpu but elsewhere?
- Joined
- Jul 6, 2004
- Messages
- 3,414
Wow, I wish I had an extra $100 or so to spend right now. I'd love to order a handful of those and start working on an actual mining chassis.
On a side note, I miss having access to a machine shop.
D
Deleted whining member 223597
Guest
My ghetto mod is pretty sick. 2 blocks of wood holding up my 1 gpu...1 earthquake and that card is gone
- Joined
- Jul 6, 2004
- Messages
- 3,414
My ghetto mod is pretty sick. 2 blocks of wood holding up my 1 gpu...1 earthquake and that card is gone
Yeah, I have a feeling my "rack" is going to be built from high tech materials including 1x2's and channel rail. The good news is that wood is non-conductive!
Just get a file crate (not milk crate, a file crate) and wooden dowels.
Zip tie the top of the cards to one dowel so they simply cannot fall off or fall against each other.
Place the dowel across the file crate. Then put a couple of supporting dowels under the cards too.
Wooden dowels are like 50 cents each, get the thick ones, they don't conduct and don't block air flow.
I cannot use a pure open chassis because of cats, file crate works perfect.
Zip tie the top of the cards to one dowel so they simply cannot fall off or fall against each other.
Place the dowel across the file crate. Then put a couple of supporting dowels under the cards too.
Wooden dowels are like 50 cents each, get the thick ones, they don't conduct and don't block air flow.
I cannot use a pure open chassis because of cats, file crate works perfect.
D
Deleted whining member 223597
Guest
I'm probably just gonna buy a few blocks of wood and screw one part of the card onto 1 block and rest the other side on the other block. Pretty ghetto, but it should work fine.
Whats the room temp? my mining room stays in the 85-90F range no matter what I do it seems. Hell my upstairs keeps hanging near 80F just from the heat being blown through the furnace.
Are all 4 spaced say 3" apart? I just ordered 8 of those USB riser things to spread my rigs out better and will be using server PSU's to send power to some of the further away cards. I originally wanted to build around 2 cards per rig but I'm running 4 cards in enough rigs now that its quickly becoming the standard for me.
PM me or post in my thread if you have anything specific you wanna ask about my rack. I'm very happy with it and it has been transitioning to hanging cards just fine so far. The biggest key to ANY rack is accounting for fans blowing which is why I chose to design mine around box fans.
I do have 8 of those USB risers coming that I paid for tonight so I'll be changing my setup around a bit by spreading everything out more since the cables are nice and long. Within the next few days I should be bringing that server PSU online too.
I'm at about $5k spent on mining at this point and I've learned quite a bit
I sent an email to Magic Growing asking if their USB extenders have the PCIe presence pins already jumped on the riser PCB.
I got this back from them.
Now to spend some cash hah!
If you aren't mining with an open frame case or file crate you will always have noise problems once your gpu fans have to run over 70%
The idea is to supplement the gpu fans with an external fan so they do not have to work as hard.
I keep my rig near a partially open window for slightly cooler air and flow, when it is closed the fans noticeably have to work much harder.
Now if only those were closer to $10, cannot bring myself to respend so much money on risers.
The idea is to supplement the gpu fans with an external fan so they do not have to work as hard.
I keep my rig near a partially open window for slightly cooler air and flow, when it is closed the fans noticeably have to work much harder.
Now if only those were closer to $10, cannot bring myself to respend so much money on risers.
Back down to $140ar if anyone needs a 1000 watt psu
http://www.newegg.com/Product/Product.aspx?Item=N82E16817438010
Lowest ever was $110ar but I don't think we will ever see that price again.
http://www.newegg.com/Product/Product.aspx?Item=N82E16817438010
Lowest ever was $110ar but I don't think we will ever see that price again.
nvgrim
[H]ard|Gawd
- Joined
- May 1, 2013
- Messages
- 1,747
Well i keep my place pretty cold,65-68 so that might help some. Being in TX i dont need the heater too much and whenever i do i just let the hot air from my miners flow through the house.
I have two rigs with two gpus per machine. Did this to mitigate heat.
I was originally setting up with 2 GPU's a rig for this reason but then I just kept expanding. I should probably update the thread with new pics and stuff but I was waiting till the new risers came.
- Joined
- Jul 6, 2004
- Messages
- 3,414
Here's a question for anyone that has the means to test it...
Is the WALL power draw MORE or LESS when using the risers?
Is the WALL power draw MORE or LESS when using the risers?
The delta should be down in the noise.
If not, you have a seriously bad connection somewhere and a bit of smoke in your future
viets7ylez
Gawd
- Joined
- Jun 8, 2004
- Messages
- 591
How good is this PSU? Not many reviews on it besides JohnnyGURU and I don't know much about him.
Very high quality psu made by Super Flower.
10 year warranty.
Been running it at near full load (not normally advised) for two months now.
If you are going from no risers to risers, there is a chance you will use less power because the card will run cooler from getting much better airflow and also the fans will have to work less hard to maintain temps.
But the risers in themselves do not change power use.
Monoprice 14awg power cord showed up today - finally, holy hell that was almost as slow as from China (ups mail innovations).
That's some thick cord. Hard to bend cold but I bet it will be easy after a night of mining.
Will test the plug temperature later compared to the factory 16awg on the EVGA
That's some thick cord. Hard to bend cold but I bet it will be easy after a night of mining.
Will test the plug temperature later compared to the factory 16awg on the EVGA
Christ, what are you powering. Did some napkin calcs in prep for my IBM 2k watt psu coming in, I came up with 16 awg as what I needed.
I usually do and haven't had any failures. my XFX 6950's have been going pretty much non stop since June/July area with a small break in november when I had quit mining right before the BOOM and scramble to get back in. I have quite a few cards
just a heads up buy middlecoin is good today: http://middlecoin2.s3-website-us-we...ports/1NTvuMNmo99UhnBcBoU1GYd9vLEFeyefUi.html
Thats what I've been doing on it. I still have a couple rigs pointed at LTC and I tend to bounce around a bit but I keep an eye on middlecoin because sometimes it can be phenomenal payments.
Thats what I've been doing on it. I still have a couple rigs pointed at LTC and I tend to bounce around a bit but I keep an eye on middlecoin because sometimes it can be phenomenal payments.
I pointed a couple cards there.
I usually do and haven't had any failures. my XFX 6950's have been going pretty much non stop since June/July area with a small break in november when I had quit mining right before the BOOM and scramble to get back in. I have quite a few cards
Thanks! The 290s are really loud lol was looking for a sweet spot for stability. Anyway also pointing at middlecoin got a great payout this day.
"only" 950 watts continuous, I just didn't like how hot the plug itself was getting on my 16awg
14awg seems to have completely solved the problem
since everything is made in China, I figured 16awg may have a fudge factor with Chinese copper, safer with 14awg
also the 14awg is a safer 3 feet instead of the 6 foot 16awg
You are doing the 220v bladcenter psu mod eh? Where did you get the wire harness?