12-29-2014, 10:08 PM
Ok, so with the proper workload settings you're getting 102.7 KH/s - 103.3 KH/s with your 7870, which aligns perfectly with the theoretical max performance of 106.9 KH/s. Therefore oclHashcat is quite optimized for your card, and you can see there is no limitation here.
There's no such thing has a 5990, that card does not exist. Maybe you meant a 5970 or a 6990. Either way, there's not much difference between 95 KH/s and 98 KH/s. Cracking speed is rarely constant, and 3 KH/s fluctuation is normal. Don't stress over this.
Based on the output you posted, everything here looks completely normal.
There's no such thing has a 5990, that card does not exist. Maybe you meant a 5970 or a 6990. Either way, there's not much difference between 95 KH/s and 98 KH/s. Cracking speed is rarely constant, and 3 KH/s fluctuation is normal. Don't stress over this.
Based on the output you posted, everything here looks completely normal.