[4+ EH] Slush Pool (slushpool.com); Overt AsicBoost; World First Mining Pool

[bspurloc]

Odd that even though our hash rate is up, we don't seem to be finding blocks much faster.

I get that feeling too, it's like extra hash power only dwindles rewards, while not adding speed.
Recentlywe dropped back to 12th/s and luck was very good.

It's like those latest additions are doing empty work / pretend to be working.

Yes, I know that sounds dumb, but still.

The increase isnt enough to exceed the decrease in shared rewards.
try mining btcguild where 50+ blocks a day are mined but your reward is a 10nth of here or worse

[1714250570]

1714250570

[1714250570]

1714250570

[1714250570]

1714250570

[gmerk]

I get that feeling too, it's like extra hash power only dwindles rewards, while not adding speed.
Recentlywe dropped back to 12th/s and luck was very good.

It's like those latest additions are doing empty work / pretend to be working.

Yes, I know that sounds dumb, but still.

Not dumb at all...

Edit: A golden spot at pool hashrate maybe...?

[valladex]

Time to abandon Bitcoin full stop unless your rich, a banker invested business or funded by mummy and daddy. (joking) entire rigs have been wiped out in hours, value is dropping, why bother? the only hope is that they are worth a huge amount in 5 years or so because people are not going to be attracted by this lunacy, only deterred.

Ebay will be flooded with CHEAP 79x 78x etc video cards soon!! win win for gamers haha...

must admit, i did see this as a way to get a nice gaming/rendering rig without the missus complaining, just showed her some cash generated from Bitcoin and she was happy! 

[vs3]

Throwing 250-300 mhash/s

Is that with a HD 5850 ?

yes, I'd either be mining or doing other stuff so overall electrical usage is negligible.

My HD5850 started stock at 260mh/s and is now running at 391mh/s
Oc it !

Out of curiosity - how did you get the 5850 to 391MH/s? What's the voltage and GPU frequencies? And what software do you use and how many watts does it use?
I've found mine to be quite stable when undervoltaged to 0.975-0.987 and GPU at 775-785MHz (which results in 305-308MH/s). On the good side - power usage is pretty decent - 675W with 5 of them mining.

[TObject]

Odd that even though our hash rate is up, we don't seem to be finding blocks much faster.

I get that feeling too, it's like extra hash power only dwindles rewards, while not adding speed.
Recentlywe dropped back to 12th/s and luck was very good.

It's like those latest additions are doing empty work / pretend to be working.

Yes, I know that sounds dumb, but still.

Is it possible for someone to submit fake shares? The pool does not check every single share for validity, or does it?

[Trongersoll]

Odd that even though our hash rate is up, we don't seem to be finding blocks much faster.

I get that feeling too, it's like extra hash power only dwindles rewards, while not adding speed.
Recentlywe dropped back to 12th/s and luck was very good.

It's like those latest additions are doing empty work / pretend to be working.

Yes, I know that sounds dumb, but still.

Is it possible for someone to submit fake shares? The pool does not check every single share for validity, or does it?

The pool would have to check every share because in software anything can be done on the mining end.

[KNK]

Is it possible for someone to submit fake shares? The pool does not check every single share for validity, or does it?

Only Slush can confirm that, but 99.99% guarantee, that each one is checked and not only if it's valid, but also if its duplicate or you can just send the same share twice or send diff 1 share while pretending to mine at diff 5

[Lucko]

Throwing 250-300 mhash/s

Is that with a HD 5850 ?

yes, I'd either be mining or doing other stuff so overall electrical usage is negligible.

My HD5850 started stock at 260mh/s and is now running at 391mh/s
Oc it !

Out of curiosity - how did you get the 5850 to 391MH/s? What's the voltage and GPU frequencies? And what software do you use and how many watts does it use?
I've found mine to be quite stable when undervoltaged to 0.975-0.987 and GPU at 775-785MHz (which results in 305-308MH/s). On the good side - power usage is pretty decent - 675W with 5 of them mining.

This can be easily done at stock voltage mem@150 core@840. You only need to replace cooling paste with Arctic silver. Usage is about 180... And I have tested your settings. I think you need batter kill-a-watt. I can't make it run with the usage that you reported last time... It uses about 120W+. If I remember correct you reported 85W.

[Tamis]

Out of curiosity - how did you get the 5850 to 391MH/s? What's the voltage and GPU frequencies? And what software do you use and how many watts does it use?
I've found mine to be quite stable when undervoltaged to 0.975-0.987 and GPU at 775-785MHz (which results in 305-308MH/s). On the good side - power usage is pretty decent - 675W with 5 of them mining.

Voltage : 1.199v
gpu : 950
mem : 350 (this is the "sweet spot" higher or lower will not give as much mh/s)

It's a sapphire and I use Trixx.

I just lowered it a bit at 381mh/s with a voltage of 1.162 and gpu at 920 to have less fan noise. I have instruments to measure the power usage but i'm at work so I don't care

This can be easily done at stock voltage mem@150 core@840. You only need to replace cooling paste with Arctic silver. Usage is about 180... And I have tested your settings. I think you need batter kill-a-watt. I can't make it run with the usage that you reported last time... It uses about 120W+. If I remember correct you reported 85W.

That won't give you 391mh/s at all more like 330.

[mteachx]

Wow
9h and 12k go to 17k Ghash/s ?!

Asic coming, yesyesyes ..

[vs3]

Throwing 250-300 mhash/s

Is that with a HD 5850 ?

yes, I'd either be mining or doing other stuff so overall electrical usage is negligible.

My HD5850 started stock at 260mh/s and is now running at 391mh/s
Oc it !

Out of curiosity - how did you get the 5850 to 391MH/s? What's the voltage and GPU frequencies? And what software do you use and how many watts does it use?
I've found mine to be quite stable when undervoltaged to 0.975-0.987 and GPU at 775-785MHz (which results in 305-308MH/s). On the good side - power usage is pretty decent - 675W with 5 of them mining.

This can be easily done at stock voltage mem@150 core@840. You only need to replace cooling paste with Arctic silver. Usage is about 180... And I have tested your settings. I think you need batter kill-a-watt. I can't make it run with the usage that you reported last time... It uses about 120W+. If I remember correct you reported 85W.

Yup - idle wattage (with just 1 video card) is around 180-190W and with all 5 it is around 220-230. On full load it is 660-680 (depending on room temperature) -
which makes 305MH/s:

So - my calculations say that it's 90-95W per card currently. (and I had to move them to another room that's not airconditioned so everything is running a bit hotter).

[Lucko]

This can be easily done at stock voltage mem@150 core@840. You only need to replace cooling paste with Arctic silver. Usage is about 180... And I have tested your settings. I think you need batter kill-a-watt. I can't make it run with the usage that you reported last time... It uses about 120W+. If I remember correct you reported 85W.

That won't give you 391mh/s at all more like 330.

Right you are. I was looking at the wrong cart it is 940...

[Lucko]

Yup - idle wattage (with just 1 video card) is around 180-190W and with all 5 it is around 220-230. On full load it is 660-680 (depending on room temperature) -
which makes 305MH/s:

So - my calculations say that it's 90-95W per card currently. (and I had to move them to another room that's not airconditioned so everything is running a bit hotter).

Can't even come in a neighborhood with the same settings... No idea why... One of the kill-a-watt is wrong. And based on 5850 specifications I believe it is yours. It is reported that it runs with about 150 watts on full. So undervolt and underclock of mem could save you 60 watts but you are overclocking GPU. So I don't think you can get it to save over 35% of the power that it is using stock. Is your kill-a-watt capable of detecting phase shift? EDIT: Sometimes this completely throws of this home meters.

EDIT: But it is a different design but still made by ATI.

[sundownz]

At least it's not just me that dropped a ton on reward -- dropped hard above the dashed line with same computing power online :

18537    2013-06-12 18:14:20    0:31:26    7824718    1736    0.00477778    241166    25.21770020    99 confirmations left
18536    2013-06-12 17:42:54    0:14:06    3514293    755    0.00504809    241163    25.10620000    96 confirmations left
18535    2013-06-12 17:28:48    0:01:19    316620    64    0.00490622    241160    25.04380000    93 confirmations left
18534    2013-06-12 17:27:29    0:28:33    7000210    1542    0.00540747    241159    25.01394980    92 confirmations left
18533    2013-06-12 16:58:56    2:50:56    42352577    8987    0.00587100    241150    25.39820944    83 confirmations left
18532    2013-06-12 14:08:00    1:24:34    20677521    4569    0.00565038    241124    25.54674000    57 confirmations left
18531    2013-06-12 12:43:26    3:23:57    44489992    10803    0.00529185    241115    25.10480000    48 confirmations left
----------
18530    2013-06-12 09:19:29    0:53:55    9964643    2907    0.00739917    241092    25.07820010    25 confirmations left
18529    2013-06-12 08:25:34    0:15:30    2867723    824    0.00701766    241080    25.24704812    13 confirmations left
18528    2013-06-12 08:10:04    0:23:59    4440359    1201    0.00672537    241076    25.14980000    9 confirmations left
18527    2013-06-12 07:46:05    0:26:42    4758169    1335    0.00710068    241071    25.08490896    4 confirmations left
18526    2013-06-12 07:19:23    3:52:04    43429961    12900    0.00737476    241068    25.33501327    1 confirmations left
18525    2013-06-12 03:27:19    0:39:17    7372985    2189    0.00754409    241039    25.12242555    confirmed
18524    2013-06-12 02:48:02    4:42:35    53459272    15894    0.00751858    241033    25.03670000    confirmed
18523    2013-06-11 22:05:27    1:15:25    14487253    4247    0.00797096    240997    25.52886700    confirmed
18522    2013-06-11 20:50:02    0:42:22    8204486    2298    0.00732816    240990    25.41680000    confirmed

Well... at least I'll be tripling my Hash Rate over the next week with hardware I already bought. May sell the GPUs sooner than expected if it drops this fast again.

[bspurloc]

Throwing 250-300 mhash/s

Is that with a HD 5850 ?

yes, I'd either be mining or doing other stuff so overall electrical usage is negligible.

My HD5850 started stock at 260mh/s and is now running at 391mh/s
Oc it !

Out of curiosity - how did you get the 5850 to 391MH/s? What's the voltage and GPU frequencies? And what software do you use and how many watts does it use?
I've found mine to be quite stable when undervoltaged to 0.975-0.987 and GPU at 775-785MHz (which results in 305-308MH/s). On the good side - power usage is pretty decent - 675W with 5 of them mining.

This can be easily done at stock voltage mem@150 core@840. You only need to replace cooling paste with Arctic silver. Usage is about 180... And I have tested your settings. I think you need batter kill-a-watt. I can't make it run with the usage that you reported last time... It uses about 120W+. If I remember correct you reported 85W.

aka STALE/INVALID shares in your miner client

[bspurloc]

Out of curiosity - how did you get the 5850 to 391MH/s? What's the voltage and GPU frequencies? And what software do you use and how many watts does it use?
I've found mine to be quite stable when undervoltaged to 0.975-0.987 and GPU at 775-785MHz (which results in 305-308MH/s). On the good side - power usage is pretty decent - 675W with 5 of them mining.

Voltage : 1.199v
gpu : 950
mem : 350 (this is the "sweet spot" higher or lower will not give as much mh/s)

It's a sapphire and I use Trixx.

I just lowered it a bit at 381mh/s with a voltage of 1.162 and gpu at 920 to have less fan noise. I have instruments to measure the power usage but i'm at work so I don't care

This can be easily done at stock voltage mem@150 core@840. You only need to replace cooling paste with Arctic silver. Usage is about 180... And I have tested your settings. I think you need batter kill-a-watt. I can't make it run with the usage that you reported last time... It uses about 120W+. If I remember correct you reported 85W.

That won't give you 391mh/s at all more like 330.

I am wondering how you get the lower memory to work.... every time I try to decrease the memory in WINDOWS machines the AMD CCC app freaks out and puts the video cards to their default memory settings refusing to let me change it anymore. unless I use TRIXX but after using Trixx for awhile the AMD CCC App gets totally lost as to what the card is doing.
Like presently one machine that I was using Trixx on the AMD CCC app has no idea what the fan speed and temp of the card is anymore it doesnt display it. on another one it display them but has wrong value. another one I completely removed all amd drivers because the Trixx utility and the amd ccc app wouldnt control the card anymore...

[bspurloc]

Throwing 250-300 mhash/s

Is that with a HD 5850 ?

yes, I'd either be mining or doing other stuff so overall electrical usage is negligible.

My HD5850 started stock at 260mh/s and is now running at 391mh/s
Oc it !

Out of curiosity - how did you get the 5850 to 391MH/s? What's the voltage and GPU frequencies? And what software do you use and how many watts does it use?
I've found mine to be quite stable when undervoltaged to 0.975-0.987 and GPU at 775-785MHz (which results in 305-308MH/s). On the good side - power usage is pretty decent - 675W with 5 of them mining.

This can be easily done at stock voltage mem@150 core@840. You only need to replace cooling paste with Arctic silver. Usage is about 180... And I have tested your settings. I think you need batter kill-a-watt. I can't make it run with the usage that you reported last time... It uses about 120W+. If I remember correct you reported 85W.

Yup - idle wattage (with just 1 video card) is around 180-190W and with all 5 it is around 220-230. On full load it is 660-680 (depending on room temperature) -
which makes 305MH/s:

So - my calculations say that it's 90-95W per card currently. (and I had to move them to another room that's not airconditioned so everything is running a bit hotter).

that is a dell power supply..... hrmmm u pulling 600+ watts means that isnt a 550watt dell.. what wattage is that?!?! I didnt know Dell made larger than 550! nice

[vs3]

Yup - idle wattage (with just 1 video card) is around 180-190W and with all 5 it is around 220-230. On full load it is 660-680 (depending on room temperature) -
So - my calculations say that it's 90-95W per card currently. (and I had to move them to another room that's not airconditioned so everything is running a bit hotter).

Can't even come in a neighborhood with the same settings... No idea why... One of the kill-a-watt is wrong. And based on 5850 specifications I believe it is yours. It is reported that it runs with about 150 watts on full. So undervolt and underclock of mem could save you 60 watts but you are overclocking GPU. So I don't think you can get it to save over 35% of the power that it is using stock. Is your kill-a-watt capable of detecting phase shift? EDIT: Sometimes this completely throws of this home meters.

EDIT: But it is a different design but still made by ATI.

Well - what I see roughly matches my electricity bill so I have no reason to suspect the kill-a-watt. And I am merely stating what I'm seeing.

By the way - undervoltaging the card does have a dramatic effect on power usage! Changes between 1.000 and 0.975 result in 10-15W on some of the cards. And downclocking the memory is important too as it results in noticeably less heat.

[vs3]

that is a dell power supply..... hrmmm u pulling 600+ watts means that isnt a 550watt dell.. what wattage is that?!?! I didnt know Dell made larger than 550! nice

That's a Dell T7500 - the PSU is 1000W (although in some places they claim 1100W). I had a leftover motherboard with processor and PSU .. so I just made a cage for it
It's a very nice motherboard - 5x PCIe x16 slots (2x16, 2x8 and 1x4)

[ewitte]

that is a dell power supply..... hrmmm u pulling 600+ watts means that isnt a 550watt dell.. what wattage is that?!?! I didnt know Dell made larger than 550! nice

That's a Dell T7500 - the PSU is 1000W (although in some places they claim 1100W). I had a leftover motherboard with processor and PSU .. so I just made a cage for it
It's a very nice motherboard - 5x PCIe x16 slots (2x16, 2x8 and 1x4)

My T7600 says 1200W but then goes into exclusions it could also be 1100W or 1000W depending on the power input source.  I believe 1200W is only 230V.