PC hardware--CPU & Motherboard & RAM/alienware x51 r2 upgrade help please


Now I want to replace my RAM(going from 6gb to 16gb), which I have done on other desktops in the past, but this model alienware is the slim version. I was wondering if I would need to stay away from certain brands when buying new RAM? Would Kingston HyperX fury 8gb sticks work / fit in my R2? Also I was hoping to upgrade my graphics card. Im currently using a Geforce gtx 645. I know alot of graphics cards wont fit in my slim R2, but what geforce products will? Would a Zotac Nvidia Geforce GTX 760  4 GB GDDR5 fit my computer? Im Trying to pay around ~$150 for 2x 8gb ram sticks, and ~$200-220 for a graphics card, Amazon is my best friend for this. Any help at all would be much appreciated.

OS Name    Microsoft Windows 8.1
Version    6.3.9600 Build 9600
Other OS Description     Not Available
OS Manufacturer    Microsoft Corporation
System Name    MIKE
System Manufacturer    Alienware
System Model    Alienware X51 R2
System Type    x64-based PC
System SKU    Alienware X51 R2
Processor    Intel® Core™ i3-4130 CPU @ 3.40GHz, 3400 Mhz, 2 Core(s), 4 Logical Processor(s)
BIOS Version/Date    Alienware A03, 9/25/2013
SMBIOS Version    2.7
Embedded Controller Version    255.255
BaseBoard Manufacturer    Alienware
BaseBoard Model    Not Available
BaseBoard Name    Base Board
Platform Role    Desktop
Secure Boot State    On
PCR7 Configuration    Binding Not Possible
Windows Directory    C:\WINDOWS
System Directory    C:\WINDOWS\system32
Boot Device    \Device\HarddiskVolume1
Locale    United States
Hardware Abstraction Layer    Version = "6.3.9600.17196"
User Name    mike\MIKE\mike
Time Zone    Eastern Standard Time
Installed Physical Memory (RAM)    6.00 GB
Total Physical Memory    5.92 GB
Available Physical Memory    4.05 GB
Total Virtual Memory    7.17 GB
Available Virtual Memory    4.23 GB
Page File Space    1.25 GB
Page File    C:\pagefile.sys
Hyper-V - VM Monitor Mode Extensions    Yes
Hyper-V - Second Level Address Translation Extensions    Yes
Hyper-V - Virtualization Enabled in Firmware    Yes
Hyper-V - Data Execution Protection    Yes

This is where I always buy RAM. It insures compatibility especially when it comes to from a huge computer manufacturer. http://www.crucial.com/usa/en/compatible-upgrade-for/Alienware/x51-r2
As for the video card I would only use what is suggested by the manufacturer.  

PC hardware--CPU & Motherboard & RAM

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Experienced in complete system builds where knowledge of kinds and types of motherboards, processors, and RAM have to be compatible. This includes intermediate knowledge of video card technologies and the troubleshooting and repair of problems associated with said hardware.


11 years experience as a self-employed PC technician with 100% customer satisfaction.

4 classes from a Networking degree. Mostly self-taught.

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