Microsoft Windows 7

Microsoft Windows 7 Page
You can get all information rfom this page and also download Windows 7 RC for free.

Comaprison Between editionshere
Following details about windows 7 RTM was copied from BlogSolute,visit the site for more info.

Windows 7 Ultimate RTM English Retail 32-bit (x86) DVD ISO Image Download

File Name: 7600.16385.090713-1255_x86fre_client_en-us_Retail_Ultimate-GRMCULFRER_EN_DVD.iso
Size: 2501894144 bytes
CRC: C1C20F76
MD5: D0B8B407E8A3D4B75EE9C10147266B89
SHA-1: 5395DC4B38F7BDB1E005FF414DEEDFDB16DBF610

Download : MiniNova | ThePiratebay 
Windows 7 Ultimate RTM 64-bit (x64) English Retail DVD ISO Image Download

File Name: 7600.16385.090713-1255_x64fre_client_en-us_Retail_Ultimate-GRMCULXFRER_EN_DVD.iso
Size: 3224686592 bytes
CRC: 1F1257CA
MD5: F43D22E4FB07BF617D573ACD8785C028
SHA-1: 326327CC2FF9F05379F5058C41BE6BC5E004BAA7
Download : MiniNova | ThePiratebay 

Windows 7 activation
Windows 7 RTM do not accept Beta or RC keys so for now you can only Rearm windows[maximum 3times], to rearm do the  following in command prompt
sysprep /generalize
slmgr.vbs –rearm
rundll32 slc.dll,SLReArmWindows
slmgr /rearm
Reboot your PC to increase grace period another 30 days.