Yes, from the first time I tried to set it up… Don´t know what else to try, or what could be wrong :-\

I´am deleting those .bin files everytime… I tried to reset my PC and run it one more time with just -I 20 and I did get a little bit more, about 635Kh/s.

These are the results with only -I 20:

[code]
GPU 0: 82,0C - 604,1Kh/s - WU:555,4/m
[/code]

These are the best results I get with just one card plugged in using your suggested settings:

[code]
GPU 0: 80,0C - 642,4Kh/s - WU:595,4/m
[/code]

Hey guys,

thanks for the RAM tip. I am now running 8 GBs of RAM on the Rig and I am not experiencing any crashes when increasing some of the settings. With the incrased RAM, I was able to tune the GPUs to the following rates :

[code]
GPU 0 - 83.0C - 681.9Kh/s - WU : 626.7/m
GPU 1 - 83.0C - 672.3Kh/s - WU : 625.7/m
[/code]

https://litecoin.info/Mining_hardware_comparison - here, I found the settings for the R9 290 with a hash rate of 817, but when I changed the settings in cgminer, I would only get about the same hash rate that I have now +/- 10 units.

My current settings are now :

[code]
setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_USE_SYNC_OBJECTS 1

cgminer.exe --scrypt -o stratum+tcp://stratum.wemineftc.com:4444 -u XXXXX -p XXXXX -I 20 --thread-concurrency 30592 --gpu-memclock 1450 --gpu-engine 1026,1005 --auto-fan --temp-target 85 --temp-overheat 95 --temp-cutoff 99 --temp-hysteresis 3 --gpu-fan 40-90
[/code]

Since the gpu-engine and gpu-memclock values from different users (forums, google, etc…) did not bring any dramatic results, the highest rates that do not crash my gpu driver or system are memclock at 1450 and engine at 1026 on GPU0 and 1005 on GPU1. GPU engine above 1005 on GPU1 causes the cgminer to label the GPU as “SICK”.

Both GPUs were bough at the same time, both are identical and both are attached directly to the motherboard.

Any thoughs about why the rates have to be difficult? And can I bring my hash rate above the current values with something else?

Thanks again.

Hi guys,

I’ve spent the last couple of days searching through various forums becuase I am not able to bring my Dual R9 290 Gigabyte cards to the expected Kh/s rate. Since nothing brough me the results I was hoping for, I am trying to find help here.

My Rig setup is :

• Windows 7 home premium 64-bit OEM
• Motherboard : MB GBT-990XA-UD3
• GPU : 2x VGA GBT R9 290 D5 4GB GDDR5
• RAM : RAM-CORSAIR- DDR3 2x 2048 MB 1600 MHz
• HDD : CAVIAR Blue-500 GB SATA3 WD5000AAKX
• CPU : AMD-Sempron 145 BOX AM3
• PSU : ENERMAX Revolution87 1000 W

Drivers, apps, programs:

amd_catalyst_13.11_betav9.5
AMD APP SDK
cgminer 3.7.2-windows
CrossfireX is disabled

My so far best average results are :

[code]
GPU 0 - 84.0C - 563.0Kh/s - WU: 555.0/m
GPU 1 - 84.0C - 565.0Kh/s - WU: 510.0/m
[/code]

The settings used for this are the following :

[code]
setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_USE_SYNC_OBJECTS 1

cgminer.exe --scrypt -o stratum+tcp://stratum.wemineftc.com:4444 -u XXXXX -p XXXXX
-I 16 --thread-concurrency 28160 --auto-fan --temp-target 85 --temp-overheat 95 --temp-cutoff 99 --temp-hysteresis 3
–gpu-fan 40-90 -w 256 -v 1 --lookup-gap 2
[/code]

Thread-concurrency is 28160 (Shaders on the GPU multiplied by 11) since a higher multiplier causes errors.

I tried the intensity settings between 8 - 20 and I do get a slightly higher Kh/s rate (about 50 more, not too much higher) than with the -I 16.

I also tried to use a scale of values for gpu memclock, powertune, engine settings which I found on the internet, unfortunately without any major results. (going for the highest recommended values crashes the system)

In one of many attempts to increase the Kh/s of the GPUs, I was able to change the -I to 20 on GPU 0 but I had to leave the -I 13 on GPU 1 (increasing above 13 on GPU 1 while maintaining -I 20 on GPU 0 would crash the system). I did this without:

[code]setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_USE_SYNC_OBJECTS 1[/code]

In this case, the GPU 0 was able to produce slightly over 800 Kh/s while GPU was slightly under 500 Kh/s.

Now, when both GPUs are running with the settings and same -I 16 or 20, I can get on average 600 Kh/s from both. But I was able to extract a little bit over 800 Kh/s on one GPU alone and therefore, I pressume that it can be extracted from both at once.

What could cause this low Kh/s or what could help to raise it?

Do you guys have any ideas or tips?

Thank you very much in advance.

Hi all :) I found this forum via google searching infos about feathercoin, litecoin… I am a noob, just getting into cryptocurrency. I need some help with my rig (settings in cgminer), so I hope I will find it here :)