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1  Alternate cryptocurrencies / Announcements (Altcoins) / Re: [ANN][EXE] Execoin - Fast | ASIC resistant | Multipool resistant | no-premine on: March 17, 2014, 11:19:05 AM
All dumper are crazy

As soon as the mining dumpers that have to pay for electricity are out of the system the investors can take over. A high network mining hash rate is not important because you can have the same block rate with 1 CPU at low difficulty vs a gazillion quintillion terra has rate at super high difficulty. What is important is to gave the coin in the hands of many investors.  There must be an average hash rate for mining but many exchanges with high volumes of trading for the coin so that there can be liquidity.  The highest risk of a new coin are many miners mining for profit because miners are the dumpers on small exchanges with low volumes causing the value of coins to be low.  Investors know how to work a market so that there is not high volatility and investors know better than to just dump. A new coin must just get through the first few weeks without being killed by profit mining dumpers and Bob's your uncle.
Being  killed by profit mining dumpers,Is EXE possible or not?

Perhaps these dumpers have no idea what is coming on inside next months. (Scrypt ASIC's )

I start this by admitting that I am new to this game, and have limited experience and knowledge of how the market forces come together to give value to coins.

I am a miner with about 8K hash power (n-scrypt) and I have been mining EXE these last days because instinctively it felt a good coin and the thought of the ASICS scares the begeebies out of me. I started mining before the price fall, and even bought some coins too. I continue to mine and hold, waiting for better times as everyone seems to think will come. But then I find myself asking questions about the coins future and I cant see how its going to work. So if anyone with a better grasp of things than me can explain how this all hangs together I would appreciate it : My thinking goes like this.

- At some point in the future the scrypt ASICs will hit the market in significant quantities, causing the difficulty of scrypt coins to rocket. This will ultimately make scrypt mining pointless for GPU based systems.

- Those people who choose not to sell off their kit on EBAY will turn to n-scrypt coins such as EXE or VERT, whilst those who have invested in the ASICS will be committed to staying with scrypt coins.

OK - this is clear enough, but what I don't get is why EXE will benifit.

If all the enormous GPU HASH power currently out there suddenly focuses on EXE then surely this will cause EXE difficulty to go through the roof, whereas the scrypt coins loose the GPU mining, to be replaced by ASICS, but share this additonal HASH power over all the scrypt coin, thus lessening its impact.

Also what is stopping the introduction of shed loads of new n-scrypt coins over the coming months that compete directly with EXE and might offer other innovative features, as yet un-thought of, that make EXE as an early adopter of n-scrypt look lacking in some way or other.

Truth is I'm confused and don't know which way to jump ....

Any thoughts welcome.
 
2  Alternate cryptocurrencies / Mining (Altcoins) / Re: CGMINER - SCRYPT - Why does adding a third GPU kill my hashrate on: January 16, 2014, 07:02:30 AM
Could be PSU.  I hear those Toxics can be power hungry.  I have 2 MSI 7970 Twin Frozr and a MSI 280X GAMING on a 1050AX Corsair that is no problem though.  What is the brand of PSU?  Rating? 

Also, try undervolting a bit and then dropping the core clock down maybe to 1050 each.  I run all mine at 1040, anything over that I get less hashrate.

Thanks for the feedback, I think you guys may be right about PSU

Im using a corsair 1050W job, however I've read that the toxic can pull 330 each, when you add the MB, cpu etc thats probably too much for the PSU. Ill try something bigger.

Unfortunately it seems that the toxic cant be undervolted (if anyone know different then pls let me know). Guess I choose the wrong card  Roll Eyes

Talking of PSUs - ive seen loads of Blade server 12 2000W units going for next to nothing on EBAY, anyone used these as a power source ?

 
3  Alternate cryptocurrencies / Mining (Altcoins) / CGMINER - SCRYPT - Why does adding a third GPU kill my hashrate on: January 09, 2014, 04:32:03 PM
Hi all,

I am new to this game (but luving it already), and have made some good progress in putting a rig together, however I have a problem that I just cant seem to solve ... any suggestions would be most welcome.

I have a single motherboard MSI-B85M-G43 with 2GB RAM and Pentium G3220 CPU. The MB has 2 PCIe x 16 and 2 PCIe x 1 slots and I am running windows 7 64 bit and the latest AMD drivers dowbnloaded from the net. I use CGminer 3.7.2

My intention was to populate the MB with 4 Saphire R9 280x TOXIC GPUS.

The first GPU gave a steady 750 Kh/s
Adding a second GPU gave an additional 750 Kh/s for a total of 1500 Kh/s
Then came my problem, Adding a third GPU causes the rates on all three cards to drop to approx 580 Kh/s !!!!

I have tried everything I can think of including:
- Powered and un-powered risers
- Swapping PCI-e slots
- re-tuning CGminer settings
- Changing power supply (I have corsair 1050 Watt)

my miner settings are:

Intensity 13
Engine clock 1100
Memory 1500
Thread concurrency 8128
Worksize 256

No matter what I try I get the same results - the rig seems not to want to go above 580 per card with three in together ! 
Has anyone else had or heard of this sort of issue and find a reason for it ?






 
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