Questions about hardware, e.g. GPUs.

learn more… | top users | synonyms

1
vote
0answers
21 views

Miner hardware problem

So, I have been mining LTC with a custom rig (see below for hardware details) and this morning it was down. When I restarded it, it worked fine for two minutes then shut down again without beep nor ...
0
votes
0answers
47 views

USB HUB 2.0 for Raspberry PI Mining Voltage and Amp recommendations

What are my best options? I've seen posts about voltage and amps but it varies. I would like to run a 10+ port USB hub it needs to be USB 2.0 Note: I will always run one miner less then the max, ...
-3
votes
2answers
60 views

Is it important to buy Bitcion hardware to start mining? [duplicate]

I have just learnt about Bitcoin and Bitcoin mining. Is it really important to buy Bitcoin mining hardware like BFGMiner to earn Bitcoins ? Can't we just download the software and join a pool?
0
votes
2answers
65 views

“Can't detect any devices”

I'm trying to start mining using my GPU (ATI Radeon HD 4850) but when I try to run cgminer it cant detect any devices. I use this to run cgminer: cgminer --scrypt -o ...
2
votes
3answers
436 views

Coins with memory-intensive mining

Are there coins that demand system memory rather than computing power? Which coin brings me the most mining profit if I have a lot of system DDR3 RAM (say 64 GB or more) in my personal computer?
2
votes
4answers
1k views

Do PCI USB risers lower the hashing rate?

I have a PCI USB riser like this one: I have 2 identical video cards with one plugged directly into the motherboard and one plugged in via the PCI riser. I am seeing a hash rate of 290 KH/s on the ...
0
votes
1answer
104 views

What temperature should a USB ASIC Miner have while running?

What is the maximum temperature a USB miner should be running at? Mine are at about 60°C/150°F.
0
votes
2answers
215 views

Pros and Cons of using HDD or USB Flash drive (script mining)? [closed]

Could someone share his/her experience of using USB flash drive over HDD? I know that the only purpose of both is to store the OS. I am going to use Ubuntu 13.10 which I believe will fit 8 GB USB ...
1
vote
2answers
102 views

RAM FPGA/ASIC miner?

Just out of curiosity, would it be possible to ( with a computer that has a large amount of RAM ) use that RAM and treat it as an FPGA capable of mining other cryptocurrencies, or would it be too ...
0
votes
2answers
260 views

Entry point hardware for profitable mining [closed]

A) Which hardware B) Which GH/s level will be profitable for 1) Pool mining 2) Solo mining Bitcoins as of February 2014? Links to sources where information can be checked over time will be great, ...
-1
votes
2answers
179 views

What hash rate should I expect using a BiFury with USB2.0 rather than USB3.0?

I'm considering the BiFury which is generates ~5GH/s on a USB3 port. They say, Miner is designed to be used with USB 3.0 port or USB 3.0 hub (must meet min. 0.9A per port to achieve full hashrate) ...
0
votes
2answers
139 views

Is the RAM or the computing power more important for the hashrate?

I have done my research on the internet and failed to come up with any suitable answer. I asked on a few forums as well, but no results. So my question is, if I have two separate computers, one with ...
-3
votes
1answer
278 views

Questions about Bitcoin mining hardware and in pools [closed]

I have recently found out about Bitcoin, and as I read more and found about about hardware and stuff, I thought of a lot of questions. So Butterfly Labs has Bitcoin mining hardware, and I was ...
0
votes
2answers
2k views

scrypt mining rig suggestions

i went to configmyrig.com and selected the options to hit something close to 5mh. here is a screenshot: http://s28.postimg.org/uayj19exp/Screen_Shot_2014_01_09_at_11_21_58_PM.png i'll be scrypt ...
6
votes
2answers
4k views

Bitcoin Miner Profit using 600 GH/s Monarch from Butterflylabs

Butterflylabs has a new 600 GH/s Bitcoin miner for $2,196. According to here, 600 GH/s at today's rate would mine approximately $170 a day. This means you make back the original cost of the miner ...
0
votes
0answers
137 views

Litecoin mining efficiency with pci-e 8x/16x

Is it essential to select a motherboard with native 2x pci-e 16x support or will 2x pci-e 8x do the same job?
1
vote
3answers
934 views

Will a bitcoin miner work for other currencies?

If I purchase a card (or similar device) that claims to mine Bitcoins at 10 GH/s, will that device also work for other currencies? That is, would the device also work on a multi-pool for litecoins, ...
1
vote
0answers
72 views

How to open a Butterflylabs miner?

How to open a Butterfly 5GH/s miner and replace the fan? I don't see any screws at the outside.
0
votes
0answers
543 views

16x Presence Short (1x Riser)

I have an MSI Z77a-GD65 and I need to short one of the slots to get it to work. The MB was working fine with 5 GPUs until a couple of weeks ago when one of the slots stopped working. I know it's the ...
1
vote
3answers
3k views

Is one quad GPU rig better than two dual GPU rigs for Scrypt mining?

I want to buy four r9 280x cards for Scrypt mining. I already have all other hardware components to create two dual rigs. Would one mining rig that uses all four GPUs instead be significantly better? ...
0
votes
0answers
234 views

Can I connect 2 different PSU's to 1 GPU?

I have 2 PSU's 850W and 750W 1 motherboard and 4 cards 280x GPU's. I would like to connect 2 of the GPU's to a second PSU. So it means 2 cards are powered by PSU A. and 2 by PSU A via the motherboard ...
0
votes
1answer
307 views

Does the Prospero X-1 have an USB port?

I have looked everywhere but cannot find out whether the Black Arrow Prospero X-1 has a USB port for connecting to a computer (and interfacing with miner to start mining). Does it have one?
0
votes
2answers
1k views

Is it cost-effective to purchase an expensive card? [closed]

I was considering purchasing the Monarch BPU 300 C or the 600 C. However, neither of them are expected to ship before February of 2014 or later. If this calculator is to be trusted, it doesn't seem ...
0
votes
1answer
584 views

Calculating Hardware Efficiency through Hash Rate per Second

I was wondering if any of you could help me in making my own mining calculator. I know there are many good web apps out there, but I would like to make one myself. What I don't understand is how to ...
1
vote
3answers
5k views

Litecoin mining hardware

Does readily available hardware exist which is capable of at least 25MH/s for litecoin mining? So basically, I am after hardware which can mine scrypt type coins which can do at least 25MH/s.
0
votes
1answer
747 views

Is there a way to mine with many graphics cards without having a pc for each one (or two)

I have a serious stash of radeon cards, some great some fairly crap, I figure with them all running it all adds up. Problem is, running a pc for each card will get HECKA expensive, so is there any ...
0
votes
2answers
3k views

Can one rig run multiple different graphics cards?

I have some 7950 and some R280, can I connect them both on one rig? Will it work normally? Or does system require all GPUs to be same?
0
votes
2answers
9k views

Device not found. NO GPU output 3 Computers same issue?

I have 3 computers that I want to use for mining when idle. 2 of them are windows 7 one of the is windows 8 all three are x64 base. two of them have 7700hd ATI cards and the third has a 7870HD XFX. ...
3
votes
4answers
5k views

Can Litecoin mining be bottle-necked by motherboard/cpu?

So I brought 2x Sapphire Vapore-X R9 280X video card. I am only doing 550kh/s each while on my other more powerful setup with the same card get about 750kh/s. I am wondering if the motherboard/cpu ...
0
votes
2answers
6k views

Will the 3TH KNC Neptune Miner still be profitable in 2014?

I am seriously considering making an investment and buying a 3TH miner. The problem is whether they will still be profitable by the time they arrive... At today's has rate calculation of 707,408,283 ...
3
votes
2answers
4k views

Power supply for Litecoin mining rig

I've been told my power supply needs to be of a good brand and have sufficient power for all the hardware, with some to spare. A 80+ gold PSU is more expensive but could be the best idea. I'm ...
0
votes
1answer
156 views

BFL 7GH Jalapeno suddenly trips circuit breaker, what can I do?

After chugging along just fine (though never at full advertised GHps always 6.5 instead of 7), my Butterfly Labs jalapeno suddenly started to persistently trip the circuit breaker all of a sudden, ...
0
votes
2answers
231 views

Can somebody provide me with the $price per GHps in mining since the old CPU days til present pre-orders?

Can somebody provide me with the $price per GHps in mining since the old CPU days til present pre-orders? I don't mean energy usage or price vs price of btc.. simply hardware costs relative to how ...
4
votes
1answer
3k views

How do I fit a normal PCI-E x16 video card into a PCI-E x1 slot?

What hardware would I need to buy to fit a normal PCI-E x16 card (In my case, a R9 280x) into a normal PCI-E x1 slot?
3
votes
2answers
336 views

Delay of shipping mining equipment on purpose?

Is the delay in shipping mining equipment on purpose? Couldnt the manufacturer mine with the new hardware and deliver it in a few month, as said to be a production problem, but mining itself until the ...
-1
votes
2answers
381 views

Off the shelf system for scrypt mining?

Being busy and now somewhat lazy I'm wondering if someone has a pointer to anyone selling off the shelf systems set up for scrypt mining? Eg. for LTC etc. Something with a single or dual 7950 or R9 ...
3
votes
1answer
5k views

CPU vs GPU Mining (FTC) - CPU wins? How?

I've read many times over a long period of time that GPU will win out against CPU every time if you use hardware of a similar tier/age. However, i've been toying around today with some FTC mining and ...
3
votes
3answers
42k views

5 GH/s Bitcoin Miner from Butterfly Labs can mine Litecoin?

I was wondering buy this ASIC miner of 5GH/s to mine Litecoin. I want know, can I mine Litecoin with this powerful tool? If not, there any ASIC miner's that can mine Litecoin?
1
vote
2answers
576 views

Mining Hardware lifespan is less than a year?

I have been exploring mining hardware at http://mining.thegenesisblock.com today. No matter what hardware I look at, all of them are making no profit by Oct 2014. How is this a good purchase? I ...
0
votes
0answers
9 views

Algorithm to figure out Bitcoins mined / day based on # of Ghash / sec, difficulty, etc [duplicate]

I know that there are Bitcoin mining Calculators, but I am looking for an actual algorithm that can be used to calculate how many bitcoins I could get in a given day based on GHashs / second ...
0
votes
1answer
1k views

How to physically configure graphic card for higher yields?

If I were to purchase a motherboard with 7 pci-ex ports. Could I then attach 7 graphic cards and run 7 cgminer processes? One for each card? Or would a better build be to group cards together with ...
0
votes
4answers
29k views

What should I choose - GPU Mining or CPU Mining? [duplicate]

I have a HP Pavilion G6-2313AX Laptop with Processor : APU Quad Core A10 and Graphics : 512 MB AMD Radeon HD 7660G (Integrated) and 2 GB ATI Mobility Radeon 7670M HD Graphics (Dedicated) I know ...
3
votes
2answers
754 views

Does the block reward get halved every 4 years regardless of hardware advancements?

Is the invention of a faster computer (let's say a quantum computer) or the lack of advancements in computing power (let's say it takes a decade to make any progress greater than incremental increases ...
4
votes
1answer
2k views

mining profitability understanding

I am a beginner looking into bitcoin mining. I don't want to waste time (or electricity) so I started looking into hardware mining rigs, for example: Saturn priced at $3000 USD, 275GH/s, consumes ...
-1
votes
1answer
867 views

Is this a good card for litecoin mining?

I found this pretty cheap card on ebay. According to the hardware comparison, a card like this appears like it would create around 750 kh/s, so it would repay itself in just a few months (excluding ...
0
votes
0answers
797 views

Low Kh/s and no HW or High kh/s with HW

I'm having issue with my configuration of CGminer. I'm new to Mining ( LTC ) and understood that Hardware error (HW) weren't good to have. The thing is , mining at intensity 12 with CGminer , i'm at ...
9
votes
4answers
86k views

Is it worthy to use “bitcoin usb block erupter”

I was searching for Mining hardware on internet and found that a new technology is available known as "bitcoin usb block erupter" for mining bitcoins as 300MH/S I just want to know if it is useful to ...
2
votes
2answers
2k views

How much will difficulty increase when ASIC miners become generally availible in the coming months?

I am considering buying a 5/Ghs Butterfly Labs ASIC miner. My question is, will the difficulty increase caused by large quantities of ASIC miners being shipped in the coming months make the miner in ...
1
vote
1answer
1k views

Can the Bitcoin Miner run offline?

Is it possible to run Bitcoin Miner like https://products.butterflylabs.com/homepage/5-gh-s-bitcoin-miner.html run offline and calculate hashes without being connected to the Internet?
6
votes
2answers
402 views

What is the cheapest device that can run a proper bitcoin client?

What is the cheapest hardware device that can run a proper bitcoin client that can participate in the P2P network?