Topic: [XMR] Monero - A secure, private, untraceable cryptocurrency - page 732. (Read 4670673 times)

Well when the block time changes to 2 minutes, it will then be 24 hours, since we didn't change the 720 block window. That will be back to the original parameters as designed by Cryptonote/Bytecoin. Perhaps the behavior will be different then. We also have some research ongoing for better ways to adjust difficulty.

I know about 720-block window. And it should also cut outliers, in theory. Maybe 720 blocks is not enough?

It indeed looks like there's 24 hour cycle, but I don't believe that it's due to certain PCs being idle (well, unless botnets again?). It can't constitute 50% of the network? And how does one even assess mining profitability if it fluctuates by the factor of two on a daily basis?

What happened to the monero price 

Difficulty is calculated over a window of 720 blocks, so that already takes into account some period of time (12 hours). In reality it seems that the hash rate really does fluctuate a lot, even if the estimate is necessarily imperfect. This probably has something to do with time-of-day as it always seems to have been synchronized to a 24 hour cycle even on coins with slightly different parameters. Maybe computers that are idle at night in some geographic area and being used to mine, lower off-peak power costs, etc. I don't think it is possible to really know for sure.

i missed something

if like this so XMR is not profitable any more ,,,, impossible to make rig for 3000 hash to mine 3 coin per day ,,, sure electric and internet and cost is more more high that this number

so it is non profitable coins

Speaking of that, I always wondered whether CryptoNote coins hashrate is any accurate. Monero's one jumps up and down from 7 mHash/s to 15 mHash/s within 24 hours (based on ChainRadar).

Obviously, hashrate is calculated as difficulty / block_time. And difficulty here is the number of hashes roughly required to find the last block. Isn't it better to evaluate CN hashrates not with this simple formula, but rather include a series based calculation?

what about
AMD Radeon (TM) R9 Series

https://compubench.com/subtest_results_of_device.jsp?id=569&hwtype=dGPU&os=Windows&api=cl&D=AMD+Radeon+%28TM%29+R9+Series


this what hash i can get and how i can calculate by myself
and this they wrote hash 1004.972 mHash/s  this what kind of algo ?? is that sha256 or scrypt or x11 ??

It is not profitable to mine Monero on rented servers afaik.

It is occasionally profitable to mine some coin or another on rented servers, but you have to evaluate opportunities carefully.

so it is not profitable anymore
this server price is 159 USD per month

Only 400 h/s from NVIDIA GEForce GTX 980 for now?   I hope someone will make improved CUDA mining software for Nvidia. So it is better to choose AMD for Monero mining because I got those 400 h/s on my R9 270X.

I didn't see that comparison but I saw the intel specs here which quote TDP of 91W. That isn't necessarily what it would use mining but it is pretty high as CPUs go.

http://ark.intel.com/products/88195/Intel-Core-i7-6700K-Processor-8M-Cache-up-to-4_20-GHz


Probably a benchmark using an old Bitcoin CPU miner. Useless except to compare CPUs with each other.

The claymore thread quotes some of the AMD GPUs with pretty high hash rates:

About 810 h/s on stock 290X (Hynix memory).

That may be somewhat out of date

https://bitcointalksearch.org/topic/claymores-cryptonote-amd-gpu-miner-v113-638915

what is the best hardware producing hash ?? GPU

About 400 h/s

The I7-4770 is about 240 h/s

NVIDIA GEForce GTX 980
this how much hash can produce per second to mining XMR ?

did you see this
http://cpuboss.com/cpus/Intel-Core-i7-6700K-vs-Intel-Core-i7-4770K

Higher clock speed    4 GHz    vs    3.5 GHz    Around 15% higher clock speed
Significantly newer manufacturing process    14 nm    vs    22 nm    A newer manufacturing process allows for a more powerful, yet cooler running processor
Higher turbo clock speed    4.2 GHz    vs    3.9 GHz    Around 10% higher turbo clock speed
Better CompuBench 1.5 bitcoin mining score    32.9 mHash/s    vs    16.33 mHash/s    More than 2x better CompuBench 1.5 bitcoin mining score
Newer    Jul, 2015    vs    Jun, 2013    Release date over 2 years later
Better geekbench 2 (32-bit) score    17,241    vs    14,351    More than 20% better geekbench 2 (32-bit) score
Better cinebench r10 32Bit 1-core score    8,981    vs    7,718    More than 15% better cinebench r10 32Bit 1-core score
Slightly better PassMark (Single core) score    2,318    vs    2,165    More than 5% better PassMark (Single core) score
Better cinebench r10 32Bit score    36,746    vs    30,095    More than 20% better cinebench r10 32Bit score
Slightly better overclocked clock speed (Water)    4.79 GHz    vs    4.52 GHz    More than 5% better overclocked clock speed (Water)



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Better CompuBench 1.5 bitcoin mining score    32.9 mHash/s    vs    16.33 mHash/s    More than 2x better CompuBench 1.5 bitcoin mining score

what this mean ?

32.9 mHash /s

how i can use this Mhash ... this can useful for which kind of algo ?

Rented servers are usually much too expensive to even break even. The cost of rental is usually many times the cost of electricity used to run the server. Of course that makes sense since the rental company has other expenses.

Anyway most CPUs will run something like 50-70 hash/thread where threads is cache/2. With that estimate you can work out some numbers.

Yes what I want to do is renting good dedicated server and start mining .... server cost 159 usd per month ... seems not profitable if this cpu will give 400 hash per second ... what I want is making sure that this cpu can only make 400 hash/s .. because I read cpu information it was 32 mhash/s ... but people here told me this cpu almost 400 hash /s... I want to know how to calculate. ... because this cpu is very huge and big one comparing with other cpus and very expensive too ... so how to calculate cpu can produce how many hash per second

If you are buying a rig specifically to mine, then GPUs are the way to go, because the hash/$ is much better and you can scale (many GPU cards per rig). Probably some 750ti model is your best bet, especially if you can get a good discounted price.

That's a big if though. As luigi says you probably won't break even on hardware any time soon even if you are profitable in terms of power.

If you are buying computer for some other reason, or already own it, and want to mine, then CPUs are fine. They seem a bit more power-efficient than GPUs in the best case, though probably not the one listed above. The lower-power variants (mostly laptop and server models) are more power-efficient than the high-performance desktop models.

Decent electricity rates should mean better than BE is easily possible; just don't expect to quickly pay off new hardware. This is no different than any crypto right now (this isn't December 2013!).