SD Card Recovery

Heres a little info about the notebook and its specs
im getting it off of xoticpc
MSI GX640-098US
- 15.4" WSXGA+ "Glare Type" Super Clear Ultra Bright Glossy Screen (1680×1050)
- Standard Dead Pixel Policy
- – Intel® Core™ i7-720QM, 1.60-2.80GHz, (45nm, 6MB L3 cache)
- Stock OEM Thermal Compound
- ATI Mobility Radeon™ HD5850 1024MB PCI-Express GDDR5 DX11
- No External Graphics Card
- No Video Adapter
- 4,096MB (4GB) DDR3 1066MHzDual Channel Memory
- Standard Finish
- – Combo Dual Layer SuperMulti 8X DVDRW Drive w/ Software-
- – 500GB 7200RPM 16MB Cache Buffer (Serial-ATA II 3GB/s) – Default
- No Back Up Hard Drive
- No Floppy Drive
- Internal 4-in-1 Card Reader (SD/MMC/MS/MS PRO)
- Internal Bluetooth + EDR
- Built-in 802.11 Wireless A/B/G/N – Stock Wireless Card
- No Network Accessory
- Built in 2.0 Megapixel Camera
- No TV Tuner
- Sound Blaster Compatible 3D Audio – Included
- No Carrying Case
- Smart Li-ion Battery (9-Cell)
- No Car Adapter
- None Standard*
- No Dock/Hub/Adapter
- No Fingerprint Reader
- No External Keyboard or Mouse
- No Notebook Cooler
- Windows 7 Home Premium 64-Bit w/System Recovery + Drivers & Utilities Disk
- No Office Software
- No Software Bundle
- 3 Year MSI US Parts & Labor 1 Year Global Warranty w/ Lifetime Tech Support + 1 Year Accidental Damage Warranty (Accidental requires registration)
- No Xotic PC Gear
for about 1470$
would it be worth getting a i5-540 processor for 60$ less or a i5-520 for 100$ less or a i5-430 for 360$ less??
Also is there a big difference between 1066 ram and 1333 type ram for 100$? is it worth upgrade?