Consolidated Litecoin Mining Guide for 5xxx, 6xxx, and 7xxx GPUs - page 30.

koalahauff

newbie

Activity: 11

Merit: 0

My gigabyte 7950 settings(620 kh/s)
core 1020 mem 1575

Code:

Driver 13.1
In reaper.conf make sure to use device 0
litecoin.conf
worksize 256
vectors 1
intensity 20
threads_per_gpu 1
sharethreads 32
lookup_gap 2
gpu_thread_concurrency 28000

Scratch

member

Activity: 84

Merit: 10

Forgot to add to this, man can you get away with a fair undervolt with Scrypt mining

serraz

sr. member

Activity: 332

Merit: 250

not sure if its already been covered in here but.

In my experimentation on getting the highest hashes out of a stock 5970 here are the settings myself and multiple other people use.

BTC : cgminer -o pool -u worker -p password -i 9 -v 2 -w 256 -k diablo -g 1 -s 30 -E 60 (350 - 360 kh/s per GPU)
LTC : cgminer --scrypt -o pool -u worker -p password x --shaders 1600 --intensity 18 -worksize 128 -g 1 --no-submit-stale --expiry 10 (350 mh/s per GPU)

Parts in bold are optional they make no difference to hashes

This is using cgminer 2.10.5.

Scratch

member

Activity: 84

Merit: 10

TY man. Had a good idea of most of it, just wondering where they were getting profitability from.

tacotime

legendary

Activity: 1484

Merit: 1005

Profitability is based on the price of LTC in USD and the difficulty of litecoin and bitcoin. Higher profitability means that it's more profitable to mine right now than bitcoin.

Share price is based on the current difficulty and the share difficulty. It's how much you get paid for every solution you have that is higher than the share difficulty.

Payout per Share = ( (48.5 LTC per block) / (65536 × Current Difficulty) ) * share difficulty

Current difficult is given by the network, right now it's 17.60344
We get 48.5 LTC per block because there is a 3.0% fee at notroll.in
The share difficulty for notroll.in is always 32

Scratch

member

Activity: 84

Merit: 10

Using notroll.

We were up at 1.86 earlier which is the highest Ive seen it, just wondering the effect.

tacotime

legendary

Activity: 1484

Merit: 1005

Pps? Pay per share?

Share price varies by pool (different donation %) and by the difficulty per share

Scratch

member

Activity: 84

Merit: 10

Hey Taco, higher profitability = higher PPS yeah?

meebs

hero member

Activity: 616

Merit: 500

Quote from: tacotime on March 02, 2013, 10:27:59 AM

Quote from: cdog on March 02, 2013, 10:14:57 AM

Im looking to spend $300 max on a new card, but Im planning to buy used. I was thinking a used 5970 (around $250), but should I get something else?

Dont want to spend much over $300, under preferably.

There are lots of 7950s for ~$290, the best is the gigabyte triple fan one. The 7950s will have a higher resale value and you get a 2-3 year warranty with them.

http://www.newegg.com/Product/Product.aspx?Item=N82E16814125414

I have 3x of these.. wonderful cards. 600 mhash in BTC and 650 khash in LTC.

Those numbers require a bit of overclocking.. and you need to have GOOD cooling in your room or computer or they will get a bit toasty.

tacotime

legendary

Activity: 1484

Merit: 1005

Quote from: cdog on March 02, 2013, 10:14:57 AM

Im looking to spend $300 max on a new card, but Im planning to buy used. I was thinking a used 5970 (around $250), but should I get something else?

Dont want to spend much over $300, under preferably.

There are lots of 7950s for ~$290, the best is the gigabyte triple fan one. The 7950s will have a higher resale value and you get a 2-3 year warranty with them.

tacotime

legendary

Activity: 1484

Merit: 1005

They work fine on my 7950s. Are you using the Windows build of reaper, or did you compile it yourself on unix?

nethead

sr. member

Activity: 322

Merit: 250

7970: 20992, 21712, or 24000 (~650 kh/s can be obtained with reaper and core/memory ratio of 0.57, e.g. 900 MHz core and 1580 MHz memory. Over 725 KH/s can be achieved with memory overvolting.)

Those concurrences are too high for "2" lookup gap

cdog

hero member

Activity: 1036

Merit: 500

Im looking to spend $300 max on a new card, but Im planning to buy used. I was thinking a used 5970 (around $250), but should I get something else?

Dont want to spend much over $300, under preferably.

tacotime

legendary

Activity: 1484

Merit: 1005

For single card, 6990s get about 900 kh/s

Otherwise 6970s (~490 kh/s) or 7950s (~600 kh/s easy)

sinner

hero member

Activity: 615

Merit: 500

whats the best GPU i can actually buy right now for BTC or LTC mining?

i found ATI Radion 5870s for sale online but they were for Mac.

i'm not looking to make money, i just want to mine BTC/LTC.

tacotime

legendary

Activity: 1484

Merit: 1005

Updated guide for 700+ KH/s 7970 instructions

meebs

hero member

Activity: 616

Merit: 500

Remember kids: TacoTime has his cards in the damn arctic.

When I run LTC mining at 1050/1.08V my VRM's run in the 90's... (core 70's)... THat said.. 640 khash each isn't to tough to get on a 7950.. just be careful so ya dont eff up your cards

exahash

sr. member

Activity: 278

Merit: 250

I'm working on converting 18 rigs with about 80 5850's to LTC mining and am looking for optimal settings. Anyone care to share?

Here's what I've found so far:

My rigs are all running Ubuntu 11.04 x64 server with SDK 2.4 and cgminer 2.10.5a from kano.

My cgminer cmdline is:
cgminer --scrypt -w 256 --thread-concurrency 7200 --intensity 20 -g 1 --lookup-gap 2 --no-submit-stale --no-restart

I built that cmdline from reading ck's readme files. Pools are Notroll.in and litecoinpool.org in that order.

I am testing with a smaller rig for now (only two 5850s). The cards are oc'd slightly to 810/1000 and 820/1000 respectively.

I'm getting 341 kh/s and 345 kh/s respectively, but they bounce down into the 300's every so often as I get stratum disconnects from NoTroll.in.

After reading this entire thread, I'm wondering a few more things:
- What's the big difference between SDK 2.4 and 2.6? I'd probably reformat and move them all to 12.04 and current SDK rather than 2.6 if its a big difference.
- Why do you recommend thread concurrency 7168 instead of 7200 (a 5850 has 1440 shaders x5 = 7200)

I see people referring to tweaking scrypt mining as an art... what's the current state of the art for 5850's?

Scratch

member

Activity: 84

Merit: 10

Yeah, I've been working on minimising them.

Real change would be to get a nice big noctua fan in the roof though.

That IO controller in the back is getting too hot. Probably would be better having reference design coolers as all the hot air would be expelled from the case.

tacotime

legendary

Activity: 1484

Merit: 1005

The GPU will try to use all threads even with the lower difficulty. The easiest way to lower heat is to reduce the voltage, if your cards allow you to.

Topic: Consolidated Litecoin Mining Guide for 5xxx, 6xxx, and 7xxx GPUs - page 30. (Read 624219 times)