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Author Topic: Introduce yourself :)  (Read 955101 times)
Granster
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September 20, 2012, 07:14:37 PM
 #6941

Ok, intro time. I call myself the worlds oldest programmer. I started programming in FORTRAN when you wrote a program on punch cards waited a whole day to see if your program ran got it back found bugs and repeat. There was only one computer in all of Flagstaff, AZ at the time at NAU. I am now writing apps for the Android phones.

What a lovely story nice to meet you I hope we become good friends x

Thank you, Chang. So nice to get a warm welcome.
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RoboCoder
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September 20, 2012, 09:05:42 PM
 #6942

Howdy from Texas!

Mining now for 45 days @7.4GH/s
Tender
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September 20, 2012, 09:18:53 PM
 #6943

Hmmm. It looks like mining goes a little faster at night than during the day.
2GOOD
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September 20, 2012, 11:47:51 PM
 #6944

Hi, I'm Niki from Bulgaria... mining since May.2011 started with 6670 just for a try and several weeks later had 2 rigs with 3 5830s each. Funny or not the most profit I made was in November/December (when the price and diff were low) mining with my tops 3GH/s and enjoying the heat in the winter Smiley

Now I'm with the same 6670 + one half dead 5850 and a total of ~300MH/s waiting for the ASICs to arrive (eventualy).

I'm a member of this forum more than a year, and still in the Newbie prison.. anyway time to escape it Wink

Български Биткойн Форум - BitcoinBG.eu
Tips accepted at: 12good4Buys8cvTj6EB4MTGNTSC4w9Swnz
Perry
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September 21, 2012, 01:29:41 AM
 #6945

Hi I am Perry!

I am pretty new in Bitcoin business, which is hard to get for a not tekkie ;-)

So I hope and sell some BTC for Cash or vice versa.

My place is Santiago de Chile. Anybody in here te meet up?

cu there, Perry
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September 21, 2012, 01:34:25 AM
 #6946

Max Keiser mentioned it on the Alex Jones Show two days ago. I then searched out several YouTube videos on the subject and promptly signed up.
carbonbased13
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September 21, 2012, 02:31:09 AM
 #6947

im marcus a man who lives for love and tries to make longlasting good relations with reliable people!
ic3y808
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September 21, 2012, 06:00:23 AM
 #6948

weeee im not a newb now
emuLOAD
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September 21, 2012, 10:24:00 AM
 #6949

Well hello Smiley

I'm Andrea*, nice to meet you all ^_^

I've been lurking for a while and have been a rather "small" and occasional bitcoin user/miner for some time now, but It's getting more and more interesting.

*I'd like to specify I'm a man... Italian, you see Smiley
BitCoins06
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September 21, 2012, 10:59:13 AM
 #6950

Hello ,
my name is Oliver

im new to bitcoin

thx you
yeda231
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September 21, 2012, 11:38:09 AM
 #6951

Hi, fellow bitcoiner here!
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September 21, 2012, 11:53:18 AM
 #6952

Long time bitcoin user here. Created an account to be used in conjunction with a GLBSE security we are launching. Hopefully will be seen around here a lot more. :-)
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September 21, 2012, 12:01:25 PM
 #6953

hi, noob here looking at what bitcoin investments are on offer... any advise would be welcome Wink

1EyDn9iYN9u1Y1PWhEuCWHxbLbKKCsTfpz
Aahzman
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September 21, 2012, 02:20:29 PM
 #6954

Howdy! Friend made me aware of BTC last night, and I am utterly fascinated by this concept!

Bought a couple BTC to get seeded, and then started pool mining using my laptop GPU...pathetic 8.6Mhash.  I expect I'll get a little better out of the ATI 6770 in my gaming rig, but still nothing to write home about.

I recently got my hands on an HP DL785 G5 server that has 11 PCIe slots...assuming I can power the thing without blowing circuit breakers in my apartment (thank god all my utilities are included), what'd produce higher Mhash: 11 x Nvidia 8400 GS 1GB cards, or 5 x ATI 5750 1Gb cards, which will (after shipping) end up costing about the same...

Anyhow, happy to be part of something so cool and innovative!

Rob
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September 21, 2012, 03:24:27 PM
 #6955

hello  Grin
RoboCoder
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September 21, 2012, 05:26:54 PM
 #6956

Howdy! Friend made me aware of BTC last night, and I am utterly fascinated by this concept!

Bought a couple BTC to get seeded, and then started pool mining using my laptop GPU...pathetic 8.6Mhash.  I expect I'll get a little better out of the ATI 6770 in my gaming rig, but still nothing to write home about.

I recently got my hands on an HP DL785 G5 server that has 11 PCIe slots...assuming I can power the thing without blowing circuit breakers in my apartment (thank god all my utilities are included), what'd produce higher Mhash: 11 x Nvidia 8400 GS 1GB cards, or 5 x ATI 5750 1Gb cards, which will (after shipping) end up costing about the same...

Anyhow, happy to be part of something so cool and innovative!

Rob


Using your laptop to mine is a really good way to shorten it's life.

As for the server.  Most (if not all) GPU cards that support OpenCL will require an x16 slot - so i would first check how many of those that are in the server.  Then of course, most server power supplies are not big enough to support that one CPU anyway.  For example an AMD 7970 GPU requires a 2 pcie power adapters, 1 is 75Watts, one is 150 Watts.  So without any overclocking - you are looking a about 225 watt draw per card.  So you will need to look at that.

Also, good mining gpu's will take 2 slots of space so at best you can get in 5 physically if all slots were x16.  and that would be with no air gap to speak of between them - watercooling would be a solution in this case.  And then without hacked drivers, 4 GPU's would be the most.

So given all requirements met - 4 GPU's.  This is kind of an overkill machine for this purpose. 

Also, don't mine with NVidia cards - use AMD - that hash rate on NVidia is horrible compared to the AMD Radeon's. 

Here is a good general card comparison guide (a little dated) but really good starting point:
https://en.bitcoin.it/wiki/Mining_hardware_comparison

Check out this thread for a good discussion on building a mining rig:
https://bitcointalk.org/index.php?topic=9036.0

Hope this helps...

RoboCoder
Aahzman
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September 21, 2012, 06:00:48 PM
 #6957

hrm. i'll have to check, but the server has 6 power supply slots, 3 are currently occupied with 750W power supplies. I could probably dig up 3 more power supplies to get the full 4500W power capacity.  That would likely let me fill it up with as many cards as i could physically stuff in there.

So, i found the wiki that had the long list of video cards/asics/fpga/cpu's and how many Mhash they produce, and yeah, the low end nvidia's do seem to suck a lot compared to the similarly priced ATI's. So it looks like that $60 5750 at geeks.com is the way to go.  Hrm. 4 of those 5750s without hacked drivers...and depending on the ordering of the x16 slots, i would probably be able to space them out so there was an air gap between them. the server case has 3 massive front-pull fans and 3 massive rear exhaust fans...so cooling shouldn't be an issue... the only hiccup i can see is i haven't been able to find what revision of PCIe the server has...dunno if that matters....

the 6770 in my gaming rig should do well, for now, and I can run one more off my current 750W power supply in that for around 400+ Mhash/s.

Thanks for the tips!
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September 21, 2012, 06:14:41 PM
 #6958

hrm. i'll have to check, but the server has 6 power supply slots, 3 are currently occupied with 750W power supplies. I could probably dig up 3 more power supplies to get the full 4500W power capacity.  That would likely let me fill it up with as many cards as i could physically stuff in there.

I would point out that the power supplies wattage "may" not be cumulative - ie.  they may be redundant and for all intents and purposes in parallel so you may only have 750 - not familiar with this particular server model so cannot tell you for sure.  That being said - stripping out unneccssary loads like extra hard drives or switching to ssd or even booting straight from flash drive, you can probably mine 2-3 good cards IF you don't overclock.

As for the GPU's i have found that the 7950s and 7970's tend to run cooler with no special cooling arrangements than the 5xxx series, although i have a single 6970 in a spare dell precision WS box running overclocked without any added fans - also they seem to be less flakey that 5xxx (ie. less prone to odd crashes - actually none of the 12 i am running have locked up or caused a problem in the last 45 days..)

RoboCoder
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September 21, 2012, 06:42:27 PM
 #6959

I work for HP, but in Enterprise Storage Arrays, i'll have to harass one of my server-savvy brethren about how the power supplies stack up...i think the second set of three are necessary if you upgrade the server to 8 CPUs... it's pretty basic. only 4 CPUs, 2 x 1GB DDR2 per CPU, and a pair of 146GB 2.5" drives...has nothing installed in any of the PCIe slots... so not a lot of extraneous wattage usage inside the sucker.

and i went down and looked at it, they're 1200W power supplies, first 3 aggregate, 2nd three are just for redundancy. so at 120V input voltage, the 1200W PSU's deliver about 900W each, for 2700W total available. no problem whatsoever on power. just a matter of what video cards it'll let me stick in there. :-)

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September 21, 2012, 06:59:35 PM
 #6960

and i went down and looked at it, they're 1200W power supplies, first 3 aggregate, 2nd three are just for redundancy. so at 120V input voltage, the 1200W PSU's deliver about 900W each, for 2700W total available. no problem whatsoever on power. just a matter of what video cards it'll let me stick in there. :-)

Wow.  Not bad - I agree - it *should* be a case of what physically can fit.  Do the power supplies have the 6 and 8 pin pcie connectors?  each GPU (depending on type) will need at least 1 if not 2.  for example a 7970 uses a 6pin and an 8pin connector. 

And i would expect that a server case that size should have HV airfans (esp with 4 cpu's) so you might actually get livable temps with 4 or 5 stock 7xxx cards...


THis particular server appears to cost a significant chunk of change...  If you were paying full (or even refurb) prices, mining would not be cost effective i would think..  but i assume since you work there you might be getting, what, design test models?  I have picked up several of the those (in the intel brand) before for good prices (although not for mining).
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