I have the following Bitmain coupons for sale, looking for 25% of face value.

1 x 450 USD expires 2018-06-10 23:59:00
1 x 400 USD expires 2018-06-30 18:23:00
2 x 200 USD expires 2018-06-01 18:13:00
1 x 100 USD expires 2018-06-01 18:10:00

I have a 2014 Casascius Bitcoin St Petersburg Bowl Coin graded PF66 DCAM by ANACS (cert# 6064766). Some slight toning of the gilt left and right on the BTC face of the coin, as they all seem to have, but not as bad as many I've seen on here. Overall it's in mint never handled condition. Can anyone give me an idea of a rough value for this coin?

Thanks!

Hi all looking for some input on what I should do with my physical 2014 Titan Mint 1oz gold 1BTC coin please. It's funded and it was my original intent to just leave the coin in my safe unopened and forget about it for a decade, thinking it would be worth more at some future point as an never opened, never tampered with, still with original funding, coin.... but, with the price of BTC/BCH being what they are, I'm now thinking I should probably peel and sweep the contents of the wallet from the coin as the coin is now worth a relatively small % markup compared to the BTC/BCH held and currently I can't do anything with it. Thoughts?

It's a beautiful coin and half the reason I don't want to peel it is it looks so good. If I do peel it, how do I do it whilst retaining the best possible collectors value for the coin? I've read on here somewhere there is a "proper way" to peel the security hologram that collectors appreciate and helps retain the collectability of the coin, does anyone know what it is? I'm drawing a blank on a search. My plan after peeling and sweeping would be to send it to ANACS for grading then put it back in the safe and resume plan-A of forgetting about it for a decade.

Appreciate any advice.

 

Got two Antminer S5s with Corsair 750M PSUs. Both hash reliably at 1.15-1.2TH, full 'o's on the ASIC lines. Any interest?

One of my S5's has been a bit weird since I got it, showing a non-existent third chain. It mines fine at standard speed, but it has a habbit of crashing every 4-5 days and requiring a restart. I tried reseating the control board which didn't help, also tried moving the ribbon cables from the ASIC boards to the other open connectors...but that makes the second AND third chain disappear so it then mines at 50% speed. I figure it must be a controller problem otherwise it wouldn't hash at full speed for 4-5 days but not sure what else to try to get it stable, feel like I need to get rid of this phantom third chain.

Anyone else seen this? Any suggestions on what to try to get the miner stable or am I SOL?

I have two $40 S5 coupons for sale, expire 02/04. $15 each, or both for $25. BTC only.

Looking to sell 10 Gridseed dualminers to free up some space. 5 have been professionally volt-modded to run at 950Mhz giving ~400KH/s Scrypt, the other 5 are un-modified running at ~360KH/s Scrypt. All miners include micro-USB cable.

$45+shipping for the volt-modded ones.
$40+shipping for the un-modified ones.

If you buy them all I will include a 10-port USB hub, an 8-way 12V DC power splitter, and 3 additional 12V DC power cables, plus a 360W 12V PSU, giving you everything you need to start mining immediately.

Payment in BTC or LTC. Shipping within the contiguous USA only.

This is the PSU: http://www.gawminers.com/products/12v-30a-360w-led-switching-power-supply/

[Description:]

Description:

Batch 1 Alpha Technologies VIPER 50MH/s SCRYPT Miner due for delivery in July.

https://alpha-t.net/product/scrypt-asic-miner/



405 GBP has been paid.
The final 945 GBP + shipping are the responsibility of the buyer. The deadline for payment has been extended by 2 weeks from June 5th to allow for a  credit card processor to be set up.

Starting bid: 1.25BTC
Min. bid increment is 0.05BTC
Buy it now: 2.00BTC
End date and time: Friday June 6th 2014 23:30EDT
Payment methods accepted: Bitcoin or Litecoin (rates per Crypsty at time of auction end)
Additional information: Escrow accepted at buyers expense

Happy bidding.

Purely to build trust. I will offer 3LTC as collateral. Happy to use escrow if fee is 1%. Loan will be repaid in tomorrow at 5PM EST.

Only registered so I could say thanks to the cudaminer guys but can't post on their thread so I'll do it here, and hopefully help some other newbies too. 

I just updated to the 12-18-2013 version of cudaminer and my 2 x GTX670 FTW card rig and I'm seeing an massively increased hashrate from ~420KH/s up to ~630KH/s!

My settings are +40Mhz GPU overclock, -500Mhz memory underclock, everything else default. Cudaminer settings that work for my cards are:

-H 1 -i 0 -m 1 -l K14x16

Temps are up from the old version where I'd run at 69C all day long to 76-79C, I get possibly very slightly better speed with K7x16 but it makes the cards run 1-2C hotter which can tip them over into the next GPU clock throttle point so it's more variable.

Maybe still not up there with the AMD GPUs (especially considering the purchase price of the cards) but I bought this machine almost a year and a half ago for gaming not mining and given the GTX670 only draws 180W per card, which by my calculations is about 1.72KHash/W not far off the 7950, I'm pretty happy with that.

NOTE: You need CUDA 5.5 which means you need pretty recent NVIDIA drivers, update them if you're not seeing a performance increase from the previous version.

Download: https://mega.co.nz/#!BUwCCSDL!JArHK18d7h3JYxNIolKj_xzYcpBrTgff20LYE7JE4l0

CUDAminer Thread: https://bitcointalk.org/index.php?topic=167229.msg4020077#msg4020077

A Reddit with lots of peoples settings: http://www.reddit.com/r/litecoinmining/comments/1t65as/nvidia_kepler_mining_improvements_now_in/

Thanks to Christian and Dave for their awesome work! 

Donate to them here:

BTC to Dave: 17sb5mcCnnt4xH3eEkVi6kHvhzQRjPRBtS
LTC to Christian: LKS1WDKGED647msBQfLBHV3Ls8sveGncnm

Have a nice day guys.