Could of bought 10Gh/s in GPUs for that much. (I know it uses way more power)
I'm honestly interested in this, I tried to work it out. Wouldn't you need about 20-24 GPU's tied to 4 or more motherboards with several PSU's? I worked out a 10GH/s rig at around $10,000. Am I way off? Using HD 7950s @ 600 MH/s card @ $450 card(this includes all supporting hardware such as MB, PSU, risers, etc) and the blade @ 12GH/s(overclocked) you're looking at roughly $9,000 to get an equivalent setup in GPUs. I'm sure some of this is off a bit(probably stuff 6 cards into a board with a lower cost/card) but it is a rough estimate. Keep in mind you can resell the GPUs when you are done.. |
|
|
|
What a crazy last 5 minutes. Definitely going to need to use some auction software for future auctions to keep John sane. Could of bought 10Gh/s in GPUs for that much. (I know it uses way more power)
I'm replacing two shelves of GPUs with this board(if I won it). I'm tired of managing GPUs. Hoping the sale of the GPUs will offset the price from this purchase. |
|
|
|
you guys are all drunk.... these blades are only 10GH each...
I'm gambling, like I did with GPUs. I saw a ~5x ROI on those, I'm hoping for at least 2x on this. |
|
|
|
I'm surprised there isn't a bet going for the average price for this round of blades. The next 15 minutes are going to be interesting. Somebody plot bids/minute for the last 48 hours  |
|
|
|
$ 2,795.00 for 6 GH FPGA? Hmmm  $ 7,000.00 for 250 GH ASIC(?) seems much better deal... That can't be correct. $3000 for 6GH? And it's not even an ASIC? I don't get it. you get $2000 discount for the jupiter when buying the mars. so the price is in reality $795. you just pay a bit for the jupiter in advance. it says up to $2000 so it can be less. What if they fail to deliver 'Jupiter'? Or if Jupiter fails to live up to the specs on paper? At this stage in the game I would consider this a very risky endeavor. |
|
|
|
|
If you are just now ordering your chips, Avalon already has something like 150-200TH of chips sold. Just those alone are enough to 3x-4x the difficulty. This doesn't include ASICMINER(who has plans for ~65 TH) or BFL. I fully expect difficulty to crest 50 million by December. In fact I imagine it'll be closer to 75 million by then.
|
|
|
|
But its not illegal to sell a plan or legos...
My understanding is that would be legal. This would be similar to an 80% lower with jigs to make milling out the fire control group easier. That being said I cannot imagine an epoxied lego lower would hold up well. An AR-15 lower isn't a pressure bearing part but you're going to have a fun time keeping the rear take-down pin through-hole from snapping off with just legos and epoxy |
|
|
|
I say this as one of my 3x HD 5970 rigs that pulls 950w from the wall runs on a 3x120mm radiator with core temps about 20C above ambient.
Since you bring up this topic, and you definitely have more experience in water cooling than I have. I am planning to WC (GPU core only) 3x7950 or 2x7970+1x7950 on a single 360 rad, I think each of them draw less power than a 5970 does. if you say only 20C above ambient, what kind of fan speed we are talking about here? I prepared 3 fans of 1200 rpm, will that be enough? I'm running push-pull with I believe 70 cfm fans. It is by no means quiet but it is quieter than the stock solution. Be very careful in watercooling just the cores. Make sure you get sufficient airflow over the VRM and memory(especially if LTC mining) or you will burn up your cards very quickly. I imagine 3x HD 7950s just cooling the cores would only be around 500-600w and in my opinion you'd be fine on a similar setup. Keep in mind I am by no means a watercooling guru. I bought a bunch of parts, it worked, and I haven't touched it in over a year. Buy a silver killcoil and distilled water. I have had minimal buildup in the lines or the blocks that have clear arcylic tops with only topping off the reservoir every other month. Just about as maintenance free as it gets. thanks for the reply, the fans I got have 58 CFM, and I got like 50 small pieces of heatsink I have to stick them on VRM and memory.....that will really take a while........ Be careful with adhesive attached heatsinks and heat. I had an adhesive backed heatsink fall off a card and drop onto a lower card and roast the lower card due to shorting out connections. |
|
|
|
I say this as one of my 3x HD 5970 rigs that pulls 950w from the wall runs on a 3x120mm radiator with core temps about 20C above ambient.
Since you bring up this topic, and you definitely have more experience in water cooling than I have. I am planning to WC (GPU core only) 3x7950 or 2x7970+1x7950 on a single 360 rad, I think each of them draw less power than a 5970 does. if you say only 20C above ambient, what kind of fan speed we are talking about here? I prepared 3 fans of 1200 rpm, will that be enough? I'm running push-pull with I believe 70 cfm fans. It is by no means quiet but it is quieter than the stock solution. Be very careful in watercooling just the cores. Make sure you get sufficient airflow over the VRM and memory(especially if LTC mining) or you will burn up your cards very quickly. I imagine 3x HD 7950s just cooling the cores would only be around 500-600w and in my opinion you'd be fine on a similar setup. Keep in mind I am by no means a watercooling guru. I bought a bunch of parts, it worked, and I haven't touched it in over a year. Buy a silver killcoil and distilled water. I have had minimal buildup in the lines or the blocks that have clear arcylic tops with only topping off the reservoir every other month. Just about as maintenance free as it gets. |
|
|
|
Hey Gomeler, long time no talk to man. Yeah I noticed that you haven't been around much. I figured you were off at school or something. Gomeler is another great overclocker and has achieved many records and performed very well in competitions  Give me sometime to search those names down, I believe he had some there. Ed is very good at making up fake people. I will come up with a list of fake people I know he has used. This is a Pak-Mail shipping place. I used Pak-Mail as my shipper and the owner is a good friend of mine. Repair Center for RMAs (call first to get an RMA number) Liquid Nitrogen Overclocking 811 East March Lane Suite A Stockton, CA 95207 916-710-6661 The other LNO locations which he posted on LinkedIn are these. Google map these locations 811 East March Lane Suite A Stockton, CA 95207 2929 Arch Street Philadelphia, PA 19104 99 Wiltshire Road, Claymont, DE 19703 I drove by the March Lane address and snapped this picture. Its an empty location but from what I hear Ed has paid rent for some months. papamoi did get in contact with the owner I believe. Through all the time I was at LNO there never was any office location, I built at my house and he did his thing from his house. Nope, no school. Ironically I stopped overclocking when I finished up school and got a serious job Just other hobbies now, BTC mining was a big chunk of my time and I enjoyed the steady income versus the handouts manufacturers would toss our way during competitions or with new product launches. I still tinker from time to time but with GPUs skyrocketing in price I no longer have interest in tearing down a brand new GTX680 to slather it in vaseline, poke at it with my soldering iron and blow it up under LN2. CPUs aren't too bad, looks like the 3770K is a cheap performer but 3D benchmarks were what was really interesting to me. Are you still overclocking and if so, what forum is used these days by the community? |
|
|
|
I suspect that having FrozenCPU fit a waterblock to a 7950/7970 will blow out the ROI on the cards. Previously, HD 5970s made sense as dual-gpus enabled very high hashing densities and watercooling kept the cards from roasting. The cards were relatively cheap per MH/s. Perhaps if HD 7990s drop in price they also may become a viable card to watercool for LTC hashing. Just my opinion, I could be very wrong.
You guys should consider using BitPay or other BTC handlers to accept BTC for your products. It would have been nice to have been able to pay with BTC when I bought all my HD 5970 waterblocks and fittings.
Personally I wouldn't WC a 7990 if you want any sort of density. 400W+ PER CARD is not something easily done on small, efficient or scalable WCing. I don't see why not. A pair of HD 7990 would be easily handled by a 3x120mm radiator. I say this as one of my 3x HD 5970 rigs that pulls 950w from the wall runs on a 3x120mm radiator with core temps about 20C above ambient. Considering how you'll decrease core and vrm temps, you'll also reduce the power consumption slightly. I imagine a 4x HD 7990 card could be cooled by a pair thick-cored 3x120mm or 3x140mm radiators. Interesting, https://www.litecoinpool.org/calc?hashrate=1400&difficulty=404.82011437 reports $12.95/day before power consumption. I'm assuming 1400 KH/s from https://github.com/litecoin-project/litecoin/wiki/Mining-hardware-comparison#wiki-ATI_AMD_GPUs and someone reporting 1415 KH/s from a pair of 7970s @ 1035MHz core, 1650MHz memory. 400 watts is only $32/month @ $0.11/kWh. Maybe it is time to consider picking up some HD7k series cards for LTC mining.. |
|
|
|
|
I suspect that having FrozenCPU fit a waterblock to a 7950/7970 will blow out the ROI on the cards. Previously, HD 5970s made sense as dual-gpus enabled very high hashing densities and watercooling kept the cards from roasting. The cards were relatively cheap per MH/s. Perhaps if HD 7990s drop in price they also may become a viable card to watercool for LTC hashing. Just my opinion, I could be very wrong.
You guys should consider using BitPay or other BTC handlers to accept BTC for your products. It would have been nice to have been able to pay with BTC when I bought all my HD 5970 waterblocks and fittings.
|
|
|
|
|
Hey Buckeye, sorry to hear that you got mixed up in this. Curious, what handle did Ed go under @ XS? I haven't visited XS in years as my interest in overclocking waned and XS seemed to be imploding under weird management by Fugger. Just curious if I would recognize his handle. This all reminds me of the dude in Philly, I think his handle was Phillyboy or something like that.
It has been interesting seeing lots of the past brought up, Bazx's K|ngp|n F1 evaporator was a classic that reminded me of all the Danfoss compressors I still have sitting in the garage. Anywho, hopefully this guy gets nailed. I clearly read the situation wrong, it was much worse than I thought.
|
|
|
|
|
If KNCMiner is indeed who they say they are, it sounds like they are trying to gain community trust by delivering an easy to develop FPGA-based device in the short-term while their longer lead time ASIC-based device is being developed. All of you who are comparing their Mars device to a BFL Jalapeno need to instead compare Mars to a BFL FPGA. KNCMiner is only.. 12 months late to the party.
Develop the FPGA, show you guys are semi-serious, sell a few and then get your ASICs out the door ASAP. Don't ask for 'pre-order' money, compete on power efficiency(since you will be 6-12 months compared to your competition) and release news articles with frequent progress updates. Nobody will get pissy if you update about development on a product that they haven't already bought with a 'pre-order'. If you miss a deadline by 3 months it won't piss off the whole community.
|
|
|
|
|
I'd be interested in using such a facility potentially year-round if the power costs are as low as you are indicating. Let me know when you get something up and running.
|
|
|
|
I also have 2 non malta 7990s.
I get 1280 per board with 1050 cores although also undervoltaged. Power consumption was 850ish from the wall, so - system and psu thats about 310W per GPU.
So even though my partner boards have 3x8pins, they have the same power draw as these 'new' cards, and cheaper. These are $1000 release cards, so £800 with VAT added. I paid £680ish, although there are more games with this.
However I see a serious problem with these cards:
They've put them in dual slot coolers. At stock clocks they were loading just below the 80s, horizontally mounted in an open air, single card system. This was on GPGPU computing. ZERO air is exhausted and its all left to be removed by the case.
My 3 slot cards and their 3kg of heatsink struggle together, even with a riser'ed slot gap. The bottom card loads at +45-50 above ambient, and the top card +55-65 above ambient. [Note I don't have voltage control of the 2nd core on each card for some reason, hopefully this will arrive with newer drivers as I have control when there is only ONE card - this will improve temps slightly]. This is with a 1050 core.
Now I can honestly say there just isn't going to be any way that you could put 2 of these cards in a case and expect the top one not to overheat. I have 3x250mm, 5x240mm of fans removing heat from cards that semi exhaust - these don't at all. You will have to open air, just have to.
I'm more than happy with my 3 slot non Maltas, think I got it right.
Which board are you using? In the past I used a Rampage III Extreme with 2 GTX 580 DCII GPUs that were triple slot. By using PCIe slots 1 and 3, the cards had 1 slot between each other. Both cards sat at comfortable temps while gaming but I imagine they'd roast like my 5870s do with no gap between the cards. |
|
|
|
I have two 7990s, not the Malta ones but Powercolor/Club3D variant. They do 1.2Ghs with ~1030 or so core. Stock volts and no heat issues. Could possibly do the same Ghs with lower core if I used higher intensity, they are on a desktop so I must have it responding without lag. 950W from the wall, it's a OC'd 3770K system with 32GB RAM, SSD Raid and a couple of mechanical HDDs. Plenty of powerful fans too.
Just out of interest what do you do with 32 gb of ram?! I run 3 VMs on my desktop that consume around ~15 gigs of ram at the most. For example, my BTC and altcoin wallets lives on a VM that lives on a RAID6 array. I have another VM that runs my trading bot and market tracking bots. Each of these VMs are sandboxed from the others but consume a ton of ram, therefore why I have 32 gigs on my desktop. It doesn't help that I also typically have a few games running in the background and just alt-tab into whichever game I feel like picking up that day. |
|
|
|
Need my rigs to heat my apartment after this second winter  |
|
|
|
I've heard of GPUs mining in the 70Cs that have failed after a couple of months, and others that have run in the 90Cs for years. Typically keeping them cooler will always be better, but also remember that temperature variance will do a lot more harm than you think. Running at GPU at 80C nonstop for months at a time is better than running a GPU up to 70C -> down to 30C -> up to 70 -> down to 40 -> etc.
Lots of truth here. Power cycling is horrible for the solder joints. That being said some of my cards have been far more prone to dying up than others. My watercooled HD 5970s with underclocked cores, underclocked ram and vddc @ 0.95v still have cores die. I haven't found the problem but frankly they've hit ROI 4-5 times by now and I just retire the dead cards. For newer cards chances are you'll kill the fan before you kill the core/vrm unless you go with HD 7990s(which likely will be hot temperamental bastards). |
|
|
|
|
Show Posts
