chrisafp07 :
Yes you definitely can upgrade no problems, as long as you have the necessary space in your case, and your psu is decent. Do you know what your motherboard model is? What are your system specs, including power supply?
I'll just give you everything considering specs
1 x Case ( NZXT Phantom Full Tower Gaming Case - Black )
0 x Case Lighting ( None )
0 x iBUYPOWER Labs - Noise Reduction ( None )
0 x iBUYPOWER Labs - Internal Expansion ( None )
1 x Processor ( Intel® Core™ i5-3570K Processor (4x 3.40GHz/6MB L3 Cache) - Intel Core i5-3570K )
1 x iBUYPOWER PowerDrive ( PowerDrive Level 2 - Up to 20% Overclocking )
1 x Processor Cooling ( Corsair Hydro Series H60 Liquid CPU Cooling System - Standard 120mm Fan )
1 x Memory ( 8 GB [4 GB X2] DDR3-1866 Memory Module - Corsair Vengeance )
1 x Video Card ( NVIDIA GeForce GTX 650 Ti - 2GB - EVGA Superclocked - Core: 1071MHz )
1 x Video Card Brand ( Major Brand Powered by AMD or NVIDIA )
1 x Free Stuff ( [FREE] - Gigabyte GC-WB300D Bluetooth 4.0 / Dual Band WiFi Expansion Card - Free with purchase of Intel i5 / i7 Desktop )
1 x Free Stuff ( [FREE Game Voucher] - Assassins Creed III - Free with purchase of NVIDIA GeForce GTX 650Ti or above )
1 x Motherboard ( Gigabyte GA-Z77-D3H -- 1x PCI-E 3.0 x16, 4x USB 3.0 )
0 x Intel Smart Response Technology ( None )
1 x Power Supply ( 500 Watt - Corsair CX500 V2 )
1 x Primary Hard Drive ( 1 TB HARD DRIVE -- 32M Cache, 7200 RPM, 6.0Gb/s - Single Drive )
0 x Data Hard Drive ( None )
1 x Optical Drive ( 24X Dual Format/Double Layer DVD±R/±RW + CD-R/RW Drive - Black )
0 x 2nd Optical Drive ( None )
0 x Flash Media Reader / Writer ( None )
0 x Meter Display ( None )
1 x Sound Card ( 3D Premium Surround Sound Onboard )
1 x Network Card ( Onboard LAN Network (Gb or 10/100) )
1 x Operating System ( Windows 8 + Office 2010 Trial [Free 60-Day !!!] - 64-bit )