bro, pm me best price for lenovo ideapad y580:

v1 = RM2788 Y580 FHD 5934-6843 i7-3630QM 4GB 500GB DVDRW NV GTX660M 2GB D5 FULL HD15.6" DVD WHB BLACK 2YR FHD NEW TODAY
v2 = RM3388 Y580 FHD 5934-2479 i7-3610QM 8GB 1TB BLURAY NV GTX660M 2GB D5 FULL HD15.6" DVD W7H BLACK 2YR FHD READY STOCK
v3 = RM2848 Y580 FHD 5934-9463 i7-3630QM 4GB 500GB DVDRW NV GTX660M 2GB D5 FULL HD15.6" DVD W8 WHITE 2YR FHD NEW


for v1, can we upgrade the ram from 4gb to 8gb? how much price after upgrade? how about the HDD? can we upgrade? the ram is 1600Mhz ? The HDD is 5400rpm? Erm..what is WHB may i ask ?


for v2, what is the ram speed and the hdd rpm? and does it support windows 8? W7H = windows 7 home premium?

for v3, same thing, can we upgrade the ram and hdd? and what is the speed for ram and the rpm for hdd? W8 means windows 8?

Please pm me best price for all these 3. (before, and after upgrading the ram / hdd size), as well as their ram speed and hdd rpm.

Thanks