gost kh/s power on Sapphire 7950 Vapor-X and cgmining

[ricciolone]

hi to all,

i have this configuration for my rig

CPU: AMD Athlon FX-4100 (stock speeds)
MOBO: GIGABYTE GA990FXA-UD7
RAM: Corsair Vengeance 2x2GB DDR1600
SSD: samsung 840
PSU: xfx 750 + seasonic 750
GPU: 4x Sapphire Vapor-X 7950

and i have this problem:

if i run cgminer (version 2 or 3 is the same)  it seem to run 620 Kh/s  every card, but in the pool it appear only 70 kh/s


if i use reaper, i can use only 2 gpu card without driver crush! and hare 1250 kh/s on reaper and on pool

do you have any suggestion?

[schnebi]

Same problem here. But if I set intensity to 13 the hash rate from cgminer and from the pool are matching at 300 KHashs per card.

[bdub]

hi to all,

i have this configuration for my rig

CPU: AMD Athlon FX-4100 (stock speeds)
MOBO: GIGABYTE GA990FXA-UD7
RAM: Corsair Vengeance 2x2GB DDR1600
SSD: samsung 840
PSU: xfx 750 + seasonic 750
GPU: 4x Sapphire Vapor-X 7950

and i have this problem:

if i run cgminer (version 2 or 3 is the same)  it seem to run 620 Kh/s  every card, but in the pool it appear only 70 kh/s


if i use reaper, i can use only 2 gpu card without driver crush! and hare 1250 kh/s on reaper and on pool

do you have any suggestion?

Are you getting hardware errors?  You can check in the GPU summary of cgminer.  It will look something like this:

GPU 0:  75.0C 3135RPM | 663.3K/661.3Kh/s | A:1178 R:22 HW:0 U:16.73/m I:19

Also can you post you cgminer config file or the command line options you use? 

[mercSuey]

Same problem here. But if I set intensity to 13 the hash rate from cgminer and from the pool are matching at 300 KHashs per card.

Yep.  Lower your intensity and you'll see the hash rates matching.  I know that's blasphemous, but if the pool is for a young coin then this happens a lot.  Also note, and this isn't an accusation, but some pools calculate their payout rate by manually calculating your hash rate.  And this manual calculation is, well, lets just say is not always accurate and is under estimated.    Nevertheless, if the coin is young, the DOA/stales might have an effect on your hash rate calculation.  Just some ideas...