If I had USD to buy, I'd buy, but I need to SELL first to buy you pussies. Get picked on too much in high school and now you guys can't play ball?
here's the biggest problem. and what if everyone was in your boat? they need money to buy first. this pretty much makes you the biggest pussy of all. stop crying like a little girl, just go to mtgox or another exchange. waah wah wah wah waaaah.... oh your thread... i always thought it open to public comments. so what's the point of this thread? you're expecting only certain kinds of comments to pamper you, otherwise you get defensive? it's not like there's going to be an influx of buyers after reading "your" thread. looks like a troll thread to me, so i'm done here... have a good day  |
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If I had USD to buy, I'd buy, but I need to SELL first to buy you pussies. Get picked on too much in high school and now you guys can't play ball?
here's the biggest problem. and what if everyone was in your boat? they need money to buy first. this pretty much makes you the biggest pussy of all. stop crying like a little girl, just go to mtgox or another exchange. |
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Hi OP,
please update on the power consumption and how you distribute the power to the cards.
I know you can use an adapter to turn on the second PSU, but from what that means the second PSU would have no load on other rails (3.3v and 5v ) correct? Is that not recommended tho? Let me know if you have know other way
Also it would be great if we can pull all the 12v wires from the PSU to power the cards (atx connector, eps, p4 12v, molex). Are there any online store we can get these common connectores? (male one)
ya i'll update all that info once it's finished and finalized. but for now, i have 5x 5870 on there just to test it. i have a seasonic 750w and a cougar 700w PSU, the seasonic 750w powers the motherboard's main 24pin and CPU power, as well as 3 GPUs. the cougar PSU powers the addition 6-pin power connector on the motherboard for the extra pci-e juice, as well as GPUs. i'm not sure if there are adapters for the CPU power cable to 6-pin pci-e cable. using the CPU power cable to power the video cards is good utilization of excess 12v line, assuming that the PSU is multi rail. if there's no adapters, you can just connect all the yellow wires together i believe Santa Fe, New Mexico. I've got a 100ft wiring run on a 15amp circuit and when I added my miner to that circuit with another gaming rig, printer, couple of routers and a switch I had the dreaded VD! Yes, voltage drop down to ~105 volts which resulted in a very unstable mining platform.
my kill-a-watt meter says my voltage drops down to about 115v off the wall. what's an acceptable AC voltage so that it doesn't go unstable? |
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well that one in the thread i'm not really selling, it's the first one i built so it has more of a sentimental value. i've spent like 25 hours on making it so far lol. i can make you a similar one though, probably will be much less time since i already experienced the problems and kinks already.
i don't really take money for the "plans", and even if i do i'm not exactly sure how to sell it or what to give you lol. you're more than welcome to read through that thread to see how i built it. one guy in there did almost the exact same thing except make it longer to fit 2 motherboards. you can use the same design concept to build it tailor it to your needs.
now if you want me to do the actual work, then that's where we can work something out. it'll be something like the cost of material plus a tad extra for the labor.
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does it have noticeably stability improvements? i know with my rigs, going from 11.6 to 11.7 drivers made my rigs less stable. that's after uninstalling the drivers, and wiping them with CCleaner and drive sweaper to reinstall new drivers.
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nope, not possible. do you know how much R&D goes into building these GPUs + PCBs? even if you have the knowledge, you're not going to have the equipment at home to do it
/thread
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i'm just going to be lazy with my post and list which motherboards works with 4+ cards that i've personally tested. if you don't already know the motherboard, you can look up the specs
- MSI Big Bang x58
- MSI 890FXA-GD70
- Asus P7P55 WS SuperComputer
- Asus Rampage Extreme x48
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^ too late, my last 8 are pending, i have no more available. so much for saving a few for myself...
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4 sold How much will shipping be to Minnesota?
$10 by USPS flate rate priority |
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either that or the sellers are smart and play the market... they sit and drop prices very minimally wile people wait for a large price drop... when it doesn't come people start to accept that fact and simply buy at the inflated prices... once this starts to happen, they drastically drop prices and decrease stock for a few months and then let them naturally skyrocket... since bit mining is based off of pure cores and not how effective they are (as we all know), the 6xxx cards are going to be more effective than the 7xxx cards because new generation go for better efficiency with slightly more raw power on the high end, not brute force all the way through... the 6xxx card will jump to their premium and the 5xxx cards (because of their brute force style) will sell for even more... once this happens, sellers start to release their stock slowly (just like is happening with the 58xx cards right now)... naturally, the sellers make bank wile the buyers suffer, but that shouldn't stop miners from buying the cards (especially as BTC are more readily accepted)... if i had to guess, the price of a 5870 will jump to $300+ if they play the market well enough this is just my take on the whole thing... any opinions on how this might work out? if you see any flaws in my analysis, please point them out as i like to know when i say something false so i can correct it the next time  umm this is all speculation right now, and you're most likely going to be wrong on the part that you said 7xxx cards will be more efficient, but less brute power than the 6xxx. the reason you see the 6xxx run faster than 5xxx cards per stream processor in games is because this generation jump does not have an architecture die shrink. both of these generations still run on 40nm die, so in order for a 6xxx card to be "better" than the 5xxx is to have more efficient stream processors, so that's why they can afford to have less of them. of course, this will hurt when they're used only for mining. however, with the 7xxx cards, it's a complete architecture change, the die will be shrunk based on 28nm tech. with a die shrink, they will be able to fit more stream processors in the same amount of area as the current generations cards, and it will most likely also have some computing and power consumption efficiency improvements. the key here is a die shrink, so it will most likely have more stream processors than 6xxx, not less. |
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ok i just got these delivered today so i have them in hand right now. here's a pic:  |
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if anyone wants to buy the 2ghs rig for 1400 shipped, i'll ship the entire pc to you.
what video cards are you using to get 2gh/s? is it with like 6x 5850s? if so, i might be interested. if you're talking about the 4x 5870, i thought that was already pending, unless you have another one? and you're not going to hit 2gh/s with it unless each of your 5870 can do 500mh/s, which is near impossible |
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I dont get it, what's wrong with an adaptor that you get when you buy the video card?
that adapter that comes with the video card pulls power from a peripheral cable, which is probably a different power rail than the CPU power rail on a multi rail PSU. you want to take advantage of the CPU's rail as well since the CPU (for dedicated miners) shouldn't be pulling that much power. |
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that might just be a crappy chip. overclocks are never guaranteed. some do better than others, even from the same batch of chips
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@ d9000: how are those fans effective being so high up above the GPU's?
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this was something i was thinking about doing, but wasn't sure if it's safe for the PSU or video card, and i also didn't know the pin assignments. can you show which CPU cable pins to go into which pci-e cable pins?
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How would cooler be better when its not on top of the GPU?
the position of the fan relative to the GPU die doesn't matter. there's a copper base and/or heatpipes that direct the heat to wherever the fan is. the heat exhaust ill be blown in the opposite direction of the fan. if the fan is in the middle, it'll just blow heat in all directions. you'd want some kind of directional airflow, but these kinds of coolers/fans are "centrifuge" type coolers, which are a bit loud |
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in most situations, non-reference is preferred. it will cool better at a lower noise. the only time you'd prefer a reference card is when you stack 4 of them on a motherboard inside a case. this is because most of the heat will get exhausted outside of the case for reference cards, but non-ref cards shoot the heat everywhere. in an open case or test bench setup, this doesn't matter, but inside a high density case, it will
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This rig looks amazing.
...
When it's all build you should def update with some specs (watt draw/ total m(g)hash/ heat , yadda yadda) definitely looks like a fun project
thanks! yup, will do. hardware specs, speed, and temps will all be posted once it's finished I hope you have planned well regarding the electrical supply. Sounds like you may live in an apartment. If so, I'd be concerned about available circuits to support the power draw from a 6xGPU rig. Just saying.
lol why do you think i live in an apartment? hard wood floors, big tile kitchens, backyard, etc... don't think an apartment has that . i'm at my house for the summer, but i will however move back to my apartment when school starts, although this rig will stay at the house. the room that i host all these miners has a 15amp breaker, i'm able to put 2 full miners with 4 GPU's each, i tried adding a 3rd one and trips the circuit breaker. i guess this 7-GPU rig will be the only one in the room, all other miners will be moved somewhere else. I probably have to reduce the setup to 10-11 cards, as I made the same mistake with the height of the CPU cooler. Also it's low profile, the pci-e riser cable blocks the fan. Maybe I can fix that with some cable binder. If I want to spend that much money, I will solve that problem with a Corsair Hydro Series H70 Water Cooling System.
hmm you didn't learn from my mistake huh? i also made the mistake of the making the the bars that support the GPUs too low, so some of the pci-e extender cables hits the CPU fan. i posted about it and took pics. you should also get a similar low profile cooler like i did. not only is it very low profile (1U), the fan is also totally encased so you don't have to worry about any cables getting caught in it. man... you and catfish sure typed a lot haha |
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