Sudden drop in hashrate! From 90Mhash/s to 50Khas/s

phluxx

newbie

Activity: 12

Merit: 0

Quote from: Emomorfar on April 24, 2013, 12:46:28 PM

Quote from: kikosanchez182 on April 24, 2013, 12:39:33 PM

A bit ignorant of hashrates. What exactly does that tell us? Volume?

Increase the power limit. It can also be because the card is getting to hot try get it cooler 7950 are real pain for example as they cant really go over 85C.

I find power limit to make mining overclocks less stable if anything. The card can go over 85c, it only matters what you have your different temperature thresholds set at it - but the lower the temperatures the better. I try not to push past 70-75c.

If it's throttling it's because it failed being stable and crashed. Adjust intensity and overclock settings down and try again.

Emomorfar

newbie

Activity: 34

Merit: 0

Quote from: kikosanchez182 on April 24, 2013, 12:39:33 PM

A bit ignorant of hashrates. What exactly does that tell us? Volume?

Increase the power limit. It can also be because the card is getting to hot try get it cooler 7950 are real pain for example as they cant really go over 85C.

kikosanchez182

newbie

Activity: 9

Merit: 0

A bit ignorant of hashrates. What exactly does that tell us? Volume?

ravagetheearth

newbie

Activity: 27

Merit: 0

This happened to me when I put too much of an overclock on my card and it started throttling on me.

sewh

newbie

Activity: 6

Merit: 0

Quote from: wrenchmonkey on April 24, 2013, 12:09:39 PM

Quote from: Necrocide666 on April 24, 2013, 12:06:07 PM

haha is that even worth it power costs vs. BTC mined?
Glad it's fixed though Wink

Probably not, but if you're looking at BTC as an investment, it doesn't matter what the calculators say you're earning per watt, it matters what Bitcoin is worth when you decide to sell. Wink

that's the thing, my first priority is getting some BTC.

Necrocide666

newbie

Activity: 31

Merit: 0

Good point, even I am seeing some nice profit with only 600Mhash/s....

wrenchmonkey

full member

Activity: 224

Merit: 100

Quote from: Necrocide666 on April 24, 2013, 12:06:07 PM

haha is that even worth it power costs vs. BTC mined?
Glad it's fixed though Wink

Probably not, but if you're looking at BTC as an investment, it doesn't matter what the calculators say you're earning per watt, it matters what Bitcoin is worth when you decide to sell. Wink

Necrocide666

newbie

Activity: 31

Merit: 0

haha is that even worth it power costs vs. BTC mined?
Glad it's fixed though Wink

sewh

newbie

Activity: 6

Merit: 0

Quote from: phluxx on April 24, 2013, 11:48:38 AM

Firstly, why not just use CGMiner?

Also, if your card dies at a certain unstable intensity/overclock it will often restart with secondary lower clock speeds and you will get almost nothing out of it. My 7870s drop to around 25-40mhash from 460mhash when this happens. Restart your computer.

restarting the pc fixed it. I had the gpu overclocked when i first set up the pc, but when i started mining the screen froze in under a minute. The problem i wrote about happend when the gpu was running at default speeds. I guess i'll underclock the gpu a bit. i'm not even sure it's worth trying to use this old piece of shit pc. (it's been collecting dust in a corner for almost 2 years, i just though i'd set it up to have a, slow, constant mining operation going.)

Necrocide666

newbie

Activity: 31

Merit: 0

Quote from: Tobius on April 24, 2013, 11:51:13 AM

What are you mining with? This has happened to by 5770 a few times, but only when I end up pushing the thing to far and it automatically throttles

What brand 5770 are you using? I have vapor-x, can clock to 940 (/950 max) without issue...... our cards are awesome for clocking, you shouldn't have that problem

Tobius

member

Activity: 182

Merit: 10

What are you mining with? This has happened to by 5770 a few times, but only when I end up pushing the thing to far and it automatically throttles

Necrocide666

newbie

Activity: 31

Merit: 0

Quote from: phluxx on April 24, 2013, 11:48:38 AM

Firstly, why not just use CGMiner?

Also, if your card dies at a certain unstable intensity/overclock it will often restart with secondary lower clock speeds and you will get almost nothing out of it. My 7870s drop to around 25-40mhash from 460mhash when this happens. Restart your computer.

Agreed. I use CG watcher for easier monitoring, but 2x miners are unnecessary.

phluxx

newbie

Activity: 12

Merit: 0

Firstly, why not just use CGMiner?

Also, if your card dies at a certain unstable intensity/overclock it will often restart with secondary lower clock speeds and you will get almost nothing out of it. My 7870s drop to around 25-40mhash from 460mhash when this happens. Restart your computer.

Necrocide666

newbie

Activity: 31

Merit: 0

Post your PC specs firstly, also your cgminer settings. (NOT your username/pass!!) So that we can see if there is an obvious mistake.

sewh

newbie

Activity: 6

Merit: 0

I'm pretty new to bitcoin mining, i just set up my old pc to mine today, at first it was working fine, the hashrate was around 90mhash/s, and i stayed like that for almost two hours, but suddenly, out of the blue the rate dropped to 50khash/s. I have no idea what caused this. I'm using GUIminer with CGminer at the backend.

need help!

Topic: Sudden drop in hashrate! From 90Mhash/s to 50Khas/s (Read 938 times)