Cryptocoin Mining?

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hyrule4927

hyrule4927

Senior member
Feb 9, 2012
359
1
76
I'm getting set up to start mining right now just to give it a try. If I think it's something I really want to keep doing I'll spring for a 7950 or 7970.

Anyway, I just had a couple quick questions.

Based on what I've read, when you keep your wallet on your PC with the default wallet, you have to download the entire block chain? It's currently downloading on my computer and seems to be taking 4GB or so. Is this going to balloon in size over time?

What all is entailed in carrying over your wallet to another computer? I'm going to be getting an SSD and reinstalling my OS in a month or so. What would I have to do to carry over my wallet to the new install?

Also, my 6850 is only showing 157 Mhash/s in GUIMiner, which seems kind of low.
 
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thilanliyan

Lifer
Jun 21, 2005
11,875
2,079
126
I had to bring my wallet over once and all I did was bring over the wallet.dat file, and all was good. Read up though just to make sure.
 
Despoiler

Despoiler

Golden Member
Nov 10, 2007
1,966
770
136
KompuKare said:
There, fixed that for you!

Using the stats from https://en.bitcoin.it/wiki/Mining_hardware_comparison (where nobody has updated that first table to include the 7970):

Model___Mhash/s__Mhash/W____Watts
5830_____248_____1.29________192W
5870_____400_____1.90________210W
5970_____740_____2.15________344W
6970_____365_____2.28________160W
7970_____825_____3.86________214W

Those are still good values but only if you have very cheap electricity.
Click to expand...

That 7970 value is pure fantasy. Stock clocks it gets 550 mh/s. 1150 it gets 687 mh/s. I guarantee that particular 7970 is a water cooled or completely made up.
 
M

MrTeal

Diamond Member
Dec 7, 2003
3,572
1,710
136
Despoiler said:
That 7970 value is pure fantasy. Stock clocks it gets 550 mh/s. 1150 it gets 687 mh/s. I guarantee that particular 7970 is a water cooled or completely made up.
Click to expand...

Howso? My 1536 shader 6950s get 2.9MH/s at the wall and my 5970s are even more efficient, and that's with 80+ Bronze and a not even 80+ PSU, respectively.

Keep in mind there's a mix of values on that wiki and they should all be taken with a grain of salt. Some people just use the TDP, some use DC power to individual cards, some use the power of individual cards and some just use total system power.

The card's DC power is obviously the most valid (and least common) measurement since it takes out the power supply efficiency multiplier which could swing by up to 10% for different users.

Using total system power consumption is a terrible measurement for comparing different cards while mining, since a person running a single 7970 will obviously have a way lower MH/J measurement than someone running eight 7970s in the same rig.
 
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thilanliyan

Lifer
Jun 21, 2005
11,875
2,079
126
MrTeal said:
Howso? My 1536 shader 6950s get 2.9MH/s at the wall and my 5970s are even more efficient, and that's with 80+ Bronze and a not even 80+ PSU, respectively.
Click to expand...

I think he was talking about the hash rate...which is really high for a 7970.
 
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thilanliyan

Lifer
Jun 21, 2005
11,875
2,079
126
Is there any way to prevent high CPU usage in GuiMiner? One core is pegged at 78% after assigning that core for the 7950. Meanwhile using Phoenix for my 6950, it is barely registering on my CPU usage.

Phoenix has much lower CPU usage but I can't get it working with my 7950, so I switched to GuiMiner.
 
B

Binky

Diamond Member
Oct 9, 1999
4,046
4
81
I don't see any real CPU usage (<5%) on guiminer using the openCL miner. This is on a Win7 Z68 system.
 
WhoBeDaPlaya

WhoBeDaPlaya

Diamond Member
Sep 15, 2000
7,414
401
126
Despoiler said:
I love mine. They are amazing little boxes.
Click to expand...
Which bitstream are you running? 792MH/s is horribly borked, 768MH/s is iffy (I get errors reported in EasyMiner) and anything higher than 816MH/s throttles excessively (I'm running them in a very warm environment). I'm sticking with 800MH/s for now to avoid overly stressing them.

Also, how hot do your stock power bricks get?
 
C

Chiropteran

Diamond Member
Nov 14, 2003
9,811
110
106
thilanliyan said:
Hmm...wonder what's happening with my system then. I searched on google and did find instances of people reporting 100% CPU usage.

Maybe this is a solution:
https://bitcointalk.org/index.php?topic=19007.0

Will have to try it tonight.
Click to expand...

It was a big problem last year with some catalyst drivers, but assume you have recent drivers it shouldn't happen. I haven't used guiminer in a long time though. Maybe try cgminer or diablominer and see if they work better?
 
Despoiler

Despoiler

Golden Member
Nov 10, 2007
1,966
770
136
WhoBeDaPlaya said:
Which bitstream are you running? 792MH/s is horribly borked, 768MH/s is iffy (I get errors reported in EasyMiner) and anything higher than 816MH/s throttles excessively (I'm running them in a very warm environment). I'm sticking with 800MH/s for now to avoid overly stressing them.

Also, how hot do your stock power bricks get?
Click to expand...

I'm running the stock 832 bitstream. It's summer and I only run my AC when I am at home. If I kept my room at 72F(their recommended ambient max) or below I can run their 872. I hadn't tried their higher two bitstreams because they weren't out when I was testing.
 
WhoBeDaPlaya

WhoBeDaPlaya

Diamond Member
Sep 15, 2000
7,414
401
126
Despoiler said:
I'm running the stock 832 bitstream. It's summer and I only run my AC when I am at home. If I kept my room at 72F(their recommended ambient max) or below I can run their 872. I hadn't tried their higher two bitstreams because they weren't out when I was testing.
Click to expand...
There's supposedly a >1000MH/s bitstream o_O
j&j said:
How much did you pay? Have you preordered any of their new boxes that are supposed to change the bitcoin world?
Click to expand...
It ended up being ~$575 per BFL Single. Took just a hair under 2 months for me to receive my 4 Singles.
 
M

MrTeal

Diamond Member
Dec 7, 2003
3,572
1,710
136
Chiropteran said:
It was a big problem last year with some catalyst drivers, but assume you have recent drivers it shouldn't happen. I haven't used guiminer in a long time though. Maybe try cgminer or diablominer and see if they work better?
Click to expand...

It can still be a problem, depending on your number of cards and aggression. Turning down the aggression can help cure it.
 
M

MrTeal

Diamond Member
Dec 7, 2003
3,572
1,710
136
thilanliyan said:
I think he was talking about the hash rate...which is really high for a 7970.
Click to expand...

Ah, my mistake then. I thought he was looking at the MH/W value since it was highlighted.

Those numbers actually fit in well with some of the other values on that table though.
825MH/1375MHz is 0.6MH/MHz, which pretty much perfectly inline with a normal 7970. Most people just aren't running their cards @ 1375MHz under a full coverage waterblock.
 
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tvdang7

Platinum Member
Jun 4, 2005
2,242
5
81
I just started up again. can anyone comment on the difficulty change with in the last 5 months? if i can remember correctly i used to get double the amount of bitcoins per day back then compared to now.
 
Z

Zargon

Lifer
Nov 3, 2009
12,240
2
76
cgminer is pretty sweet once its set up!

I need to drag my spare mining rig and drop it off at the office again on the DMZ
 
M

Mir96TA

Golden Member
Oct 21, 2002
1,949
37
91
Binky said:
Neither. You should buy a motherboard that can hold all three. ;)
Click to expand...
heeee eee
Actually I have a MB it can handle 2 PCie8 or one Pice 16 + 2 Pice 1x.
For mining purpose it can handle the GPU.
In early Winter I ran my computer in every other Nights for little extra heat.
I did end up having a $100 in my pocket. (Aproxx 4-6 Hrs at nights)
I usally do not mining if I am doing my Cisco labs or if my wife or kids lurking on FB, Youtube etc..........
 
SheHateMe

SheHateMe

Diamond Member
Jul 21, 2012
7,251
20
81
Whats the point of getting involved with this with a GPU if people are just buying expensive equipment for mining.

Kind of pointless then.
 
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