A lot of good hardware is launching in March and April
Most notably the GTX680 in end of March and i7 3770K in end of April
Since u have 150k budget u can accommodate both these pieces of Hardware but u will have to wait
I strongly suggest that u seriously consider GTX680 if not the i7 3770K
As for ur current options obviously u need a Z68 Motherboard which can be bought from here
IAMEXTREME.NET - Motherboards in Pakistan
I would suggest ASRock Extreme3 Gen3 @12k Rs but u can spend 18k Rs on Extreme4 if u want
And if u have plans for 3-Way SLI or Quad SLI then Extreme7 is an option
Though i would suggest spend a large part of the budget on the "3D Card" instead of an extremely expensive motherboard and see whether or not u want to Overclock ur Processor
PS: Since u have a solid budget why not try a better Casing like HAF 922 or HAF912 atleast?
---------- Post added at 12:32 AM ---------- Previous post was at 12:30 AM ----------
is there a huge difference btween 1600 bus and 1866 bus gaming dimms from corsair .
Considering Sandybridge processors there is absolutely no difference when going from 1600MHz to 1866Mhz Rams in GAMING
they will show a difference ONLY in Synthetic Benchmarks and not in Real World Performance
for 1600Mhz Rams G.Skill RipJawsX 2x4GB (8GB) is available for 5700Rs @IMX