Topic: 5 LTC reward to whoever can get my hashing to 700 kh/s (solved) (Read 807 times)

- Try these binaries and pick the corresponding thread-concurrency: https://litecointalk.org/index.php?topic=6058.0
- Use -g 1 -I 20
- See if overclocking ram actually gives you more hashrate. The 7870 XT/LE are the fastest at precisely 1500MHz ram. Anything different triggers higher ram latencies. I suspect that the XFX's Vrams are too slow/latency too high ...
- After finding the fastest stable ram clock, you have to tweak the core speed for the best core/memory ratio. That depends on the .bin you pick from step 1, but it's from 55 to 70% (Start at 60% and go up). If for example you manage to get the vram to 1700MHz, look at 900-950 for core and go up step by step

try this

-I 13 -g 2 -w 256 --thread-concurrency 8192 --gpu-engine 1050 --gpu-memclock 1625 --shaders 2048

and try my previous posted settings again but this time update your sdk and drive to the latest version

Let me try a different tactic for you.

Go to your AMD settings, i'm guessing you have a program called overdrive in those (or some other 3d card monitoring program)  and click it. Look at the maximum you can scale up your settings (there's 4 different sliders) and the maximum of each write them down.

Then your CG miner settings should look like this:
cgminer --scrypt --worksize 256 -o XXX -u XXX -p XXX -I 19 --thread-concurrency 12128 --vectors 1 --gpu-threads 1 --gpu-engine 900 --gpu-memclock 1450

Now change or add these items: gpu-engine 900 --gpu-memclock 1450 and set them to the maximum on your overdrive settings.  Now when you run it keep your overdrive menu open so you can keep an eye on your temperature, it'll run at about 90deg which is very hot and should definitely not go higher than that but might get you to 700.

Try -I 13 -g 2 -w 256 --thread-concurrency 11200 --gpu-engine 1075 --gpu-memclock 1500

Use 13.11 beta drivers.

This didn't really make a difference and actually dropped the rate to 555.  I also tried cgminer 3.7.2 which made no difference.

Edit:  Also forgot to mention voltage is locked.

I like this config and i gave a little twist on it :

cgminer.exe --scrypt -o stratum+tcp://www.netcodepool.org:3333 -u blahblah -p blahblah --lookup-gap 2 --shaders 2048 -g 2 -I 16 -w 256 --auto-fan --gpu-fan 30-75 --temp-cutoff 90 --temp-overheat 85 --temp-target 72 --gpu-memclock 1500 --gpu-engine 1000 --gpu-powertune -20 --expiry 1 --scan-time 1 --queue 0 --no-submit-stale


what is the reason of not using cgminer 3.7.2 ?

this you may want to try

1. Increase GPU voltage to 1.2v (google for it)
2. Try a differrent pool

thats easy

try this

cgminer.exe --scrypt -o stratum+tcp://www.netcodepool.org:3333 -u blahblah -p blahblah --lookup-gap 2 --thread-concurrency 11200 -g 2 -I 13 -w 256 --auto-fan --gpu-fan 30-75 --temp-cutoff 90 --temp-overheat 85 --temp-target 72 --gpu-memclock 1500 --gpu-engine 1080 --gpu-powertune -20 --expiry 1 --scan-time 1 --queue 0 --no-submit-stale

Sorry for posting here but this is the only spot I can currently post.  

Let me start off by saying I'm mining litecoins with cgminer and am using XFX 7970 DD cards (http://www.newegg.com/Product/Product.aspx?Item=N82E16814150665).  I have thoroughly researched this and at this point believe that there isn't anything that can be done to get my hashing with these cards to 700.  That being said, I would love to be proven wrong.

My system:
CPU:  Intel Celeron G1610 Ivy Bridge 2.6GHz LGA 1155
MOBO:  ASUS P8Z77-V PRO
VID: XFX Double D FX797ATDJC
MEM:  G.SKILL NS 2GB 240-Pin DDR3 SDRAM DDR3 1333 (PC3 10666)
PSU: COOLMAX ZPS-1600B (14642) 1600W 80 PLUS SILVER

Driver: 12.8
SDK: 2.7
cgminer: 3.1.1

What I've tried:
As I said I've thoroughly researched this.  I've read through a ton of threads and tried the suggestions in all of them.  Most noticable https://bitcointalksearch.org/topic/m.1980690 and https://bitcointalksearch.org/topic/low-hashrate-on-7970-scrypt-under-700khs-heres-what-to-do-200777

In one of those threads there was one or two people that said they had the XFX 7970 DD and flashed it to another bios.  One thread linked a gigabyte bios and the other a saphire.  They claimed they could successfully flash and mine at 700+ kh/s and showed screenshots.  Now I tried both of those exact bioses and neither worked for me.

I also downloaded about 30 different bioses from http://www.techpowerup.com/vgabios for the 7970 and tried them all.  None of them worked.  I flashed using the atiflash method.  Some were completely unstable, some would load in to windows but then crash.  The two specific bios in the threads mentioned above would completely crash and not boot in to windows.

I'm currently getting about 577 kh/s per card.  My batch file is:

setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_USE_SYNC_OBJECTS 1
cgminer.exe --scrypt -o stratum+tcp://www.netcodepool.org:3333 -u blahblah -p blahblah -I 13 --thread-concurrency 8192 -g2 -w 256 --lookup-gap 2 --gpu-powertune 20 --auto-fan --temp-overheat 89 --temp-target 75

The cards are currently set at 1060/1500.  This is the the highest setting I could get that was stable with a 577 hash rate.  I was able to get up to 590~ish but it wasn't stable.

If there's any other info I can provide please let me know because I would absolutely love to able to hit 700 like every other 7970 ever created.

edit:  this was solved by updating to the latest sdk and beta drivers from someone in another thread.