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1  Economy / Computer hardware / [WTS] 6912 BFL Chip Credits on: August 15, 2013, 10:52:17 AM
I have 6912 chip credits for BFL Chips. PM me if you are interested.

More information about BFL chip credit program:
   https://forums.butterflylabs.com/announcements/3272-customer-appreciation-chip-credit-program.html
2  Bitcoin / Hardware / Received BFL Jalapeño Today! on: April 29, 2013, 06:32:33 PM
After many, many, many months of waiting I’m glad to report BFL has delivered. I received my first Jalapeño today!

This bad boy is getting 5.6 Gigahash instead of 4.5 Gigahash listed on their website. I'm thrilled about about the speed increase even though it's larger and takes more power.

For a $149 investment it'll repay itself and make $1300 on top in one month of mining.

Here are some pics for your enjoyment... View at imgur: http://imgur.com/a/fHvMm#0
3  Bitcoin / Mining software (miners) / CGMINER & FPGA still requires OPENCL.DLL? on: May 10, 2012, 07:04:47 PM
It appears that CGMINER requires opencl.dll to be installed. This is an issue for FPGA only mining. I'm running in a virtualized environment that does not support opencl.dll. Is there a way to run CGMINER without GPU mining functionality/opencl.dll dependency?

Thanks

[EDIT]

Figured it out
  Needed to install AMD SDK Even though i'm not using the GPU because the exe was linked to opencl.
  Also needed to use -G to disabled GPU mining.
4  Bitcoin / Mining support / blocks & pools IP Address on: April 09, 2012, 08:19:34 PM
If I understand solo mining correctly then your IP address is recored as part of the block chain but what happens if your a member of a pool? Is any information stored in the block chain that can lead back to the original miner's IP?

5  Other / CPU/GPU Bitcoin mining hardware / Power Configuration [BOUNTY 5BTC] on: March 30, 2012, 03:23:45 PM
I'm about to spend a bunch of cash in an area that I'm not familiar with. I've done a bunch of research and would like your help. I'll donate 5 BTC to whoever can confirm my approach or suggest a better solution.

I will be running 9 mining rigs each with 4x7970s pulling just about 1150 watts each via two 750 Watt Power supplies. I've calculated that at 208 Volts that each machine will pull 5.53 amps or 49.76 amps to support all 9 machines.

I've been fortunate enough to get a lease that includes electricity and A/C. The office suite comes with a NEMA 10-50 Socket 50 Amps @ 250V. I've contracted an electrician to replace the outdated NEMA Socket with a CA STD CS8265C (California Style 50 Amp, 250 Volt, 3 wire Twistlock Plug). That will allow me to use the Geist ZP090-105C19CS6 50 Amp PDU (http://www.stayonline.com/detail.aspx?ID=13298). I will then use C20 to 2 Way C13 cord (http://www.stayonline.com/detail.aspx?ID=18940) to plug in each of the powers supplies (two to each rig).

It's going to run me $919 for the PDU/Power cords and about $400 for the electrician to change out the power socket. Is this the best way to go or is there a better option?
6  Other / CPU/GPU Bitcoin mining hardware / Different Performance with identical equip/software but different motherboards.. on: March 16, 2012, 04:46:13 AM
Can anyone shed light onto why I get 38 mhash more per 7970 running on a Gigabyte MoBo (GA-990FXA-UD7) than I do on a MSI 890FXA-GD70.

Here's the Hardware -
  4x Saphire 7970 - Mem 685 - Core 1200
  AMD Sempron 145
  2GB 240-Pin DDR3 SDRAM DDR3 1066
  Barracuda SATA 60 Gig Drive
and the Software (Not that this should have an impact)
  Windows 7
  Diablo Miner
  MSI Afterburner
 
I get 708 mhash per 7970 after 24 hours on the GA-990FXA-UD7
I get 670 mhash per 7970 after 24 hours on the MSI 890FXA-GD70

This accounts 154 mhash loss for the rig if I use the MSI 890FXA-GD70 Mobo.

I'm building a new rig and plan on purchasing a less expense Mobo this time around.
I heard the MSI mATX h61-p21 @ $58 bucks is a good 4x Mobo. That's $200 less than the Gigabyte but i'm afraid it'll have the same performance issue that I'm experiencing with the MSI 890FXA-GD70. I'd much rather spend the extra $200 and have 154 mhash better performance.

The question is should I expect different Mobo's to have different performance? If so what Motherboards perform the best?

Thanks for your help guys!

7  Other / CPU/GPU Bitcoin mining hardware / PCI-e 1x to 16x Riser Issues on: March 01, 2012, 04:10:15 AM
I thought I could use PCIe 1x to 16x (cablesaurus.com) Risers on every 7970 connected to my MOBO (MSI 890FXA-GD70) under Windows 7 using 12.2 Catalyst Drivers. It hasn't turned out to be as easy as I thought it would be.

It seems that unless I plug the card into the MOBO directly and get Windows 7 to recognize the hardware then reboot with the 7970 using the riser it wont work at all. Is there a way to configure Windows to recognize the 1x riser without first having to plug it directly into the MOBO.

Also it seems that the MOBO wont recognize the first 7970 unless it's directly plugged into the MOBO. Is there a way to get the MOBO to recognize the card using a 1x riser?

It seems my only option is to purchase PCIe 16x to 16x risers but I'd rather use the 1x risers if possible.

Any help much appreciated.


8  Bitcoin / Mining software (miners) / 7970 Linux Drivers on: February 27, 2012, 11:53:33 PM
Can someone please tell me if these are the latest drivers to use under Linux 64 Bit for the 7970 -

Catalyst 12.1 Driver
http://support.amd.com/us/kbarticles/Pages/catalyst121linuxdriver.aspx
   Has you download - http://www2.ati.com/drivers/hotfix/radeon_7900_series/amd-driver-installer-8.921-x86.x86_64.run

AMD App SDK 2.6
http://developer.amd.com/sdks/AMDAPPSDK/downloads/Pages/default.aspx
   Has you download - http://developer.amd.com/Downloads/AMD-APP-SDK-v2.6-lnx64.tgz

Also is the correct install order to download Catalyst 12.1 and install then download AMD 2.6 and install?

I've read several posts that people have indicated they re using catalyst 12.2 but I can't find it.

Thanks for the help!


9  Other / Beginners & Help / 7970 Rig on: February 27, 2012, 10:31:10 PM
Anyone try configuring 7970 with BAMT the distro. I updated the drivers to support the card (http://support.amd.com/us/kbarticles/Pages/catalyst121linuxdriver.aspx) but phoenix miner just seg vaults whenever I try to run it. I downloaded phoenix2 along with the DiaKGCN kernel  and that failed to work as well. What's the best way to get these new cards to work?

Thanks
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