Things were set right so:
sgminer.exe -k quarkcoin -o stratum+tcp://stratum.nicehash.com:3345 -u 1JrCZpGJQVfXoY9aCKPXqsxBzU5ia5AeXf -p p=0.5 --shaders 2048 --thread-concurrency 8193 --intensity 18 --worksize 64 -g 4 --lookup-gap 2 --gpu-reorder

According to you, is it normal speed and what I can do as optimization?
Extremely thank
@unklo and
@Eastwind for aid?
p.s. I picked up intensity 22 and increase the speed of 13.65 MH/s!
Thank
@cinnamon_carter!
That is very fast. Did you download that sgminer from nicehash?
I would also be very interested given I can barely surpass 6 M/H on my 290x using 14.6[RC2] w/ Worksize @ 128, Intensity @ 23 and Clocks @ 1150/1250.
6MH/s Quark? I was told stock did 5; nice.
I've reached 6.45 w/ aforementioned settings with clocks modified to 1230/1500 which is still nowhere close to the 18+ you've achieved which is very, very nice.
Would you be aware of any kernels/.bins/miners which can bring about better performance? I'm currently on sgminer_v5.1_2015-03-09.
Are you using Stilt's bios on your 290x and if so, do they offer performance improvements for algorithms other then Scrypt?