Sapphire R9 280X Vapor-X OC mining settings

[alakaiz]

Alright, I just got my mining rig started today with two of these cards and I can only get 690kh/s after a bunch of messing around. Should I undervault this card and can anyone pm me and help me out with my rig?

[frantz256255]

Hi ,

I bought today a R9 280X sapphire !!!

My KH/s si actually of 580

with

Intel core Duo2 E8400 @ 3Ghz
4 Giga Memory at DDr2
ModtherBoard : PQ5

Windows 7 x64

My script connexion :

Frist file :
setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_USE_SYNC_OBJECTS 1

Second file :
cgminer --scrypt -o stratum+tcp://usa.wemineltc.com:3335 -u XXXX -p XXXX--intensity 13 --auto-fan --temp-cutoff 90 --thread-concurrency 8192 --gpu-engine 1100 --gpu-memclock 1500 --temp-target 70

Actually, my temperature is 80°C not more...

I can't put over -I 13 , otherwise i got some HW...

Any idea to get better score ?

[divxrullz]

Hi ,

I bought today a R9 280X sapphire !!!

My KH/s si actually of 580

with

Intel core Duo2 E8400 @ 3Ghz
4 Giga Memory at DDr2
ModtherBoard : PQ5

Windows 7 x64

My script connexion :

Frist file :
setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_USE_SYNC_OBJECTS 1

Second file :
cgminer --scrypt -o stratum+tcp://usa.wemineltc.com:3335 -u XXXX -p XXXX--intensity 13 --auto-fan --temp-cutoff 90 --thread-concurrency 8192 --gpu-engine 1100 --gpu-memclock 1500 --temp-target 70

Actually, my temperature is 80°C not more...

I can't put over -I 13 , otherwise i got some HW...

Any idea to get better score ?

Try to use -g 2 (gpu-threads) and reduce gpu-engine. In your case, the command line should be:
cgminer --scrypt -o stratum+tcp://usa.wemineltc.com:3335 -u XXXX -p XXXX--intensity 13 -g 2 --auto-fan --temp-cutoff 90 --thread-concurrency 8192 --gpu-engine 1050 --gpu-memclock 1500 --temp-target 70