Help with upgrading my 2014 PC

Hi everyone, I'm trying to get back into PC gaming and would like to be able to run most new games in ultra high settings. Money is not an issue currently with upgrading what I currently have. What would you guys recommend I upgrade from my tower and to what? I also am looking to upgrade my monitor if needed. Thank you.

Monitor: 2011 Sony Playstation 3D Display

Specifications

Display type: Stereoscopic 3D HDTV

Screen size: 24"

Resolution: 1080p (1920 x 1080)

Colors: 16.7 million

Contrast ratio: 5000:1

Backlight type: Edge LED, white LED

Digital inputs (side): 2 HDMI, 1 component

Refresh rate: 240 Hz

Tower: received on 6/24/2014

CAS: Cooler Master HAF-XM Mid-Tower Gaming Case w/ 2x 200mm fan, Front USB 3.0 & X-Dock HDD HotSwap

CD: 24X Double Layer Dual Format DVD+-R/+-RW + CD-R/RW Drive (BLACK COLOR)

COOLANT: Standard Coolant

CPU: Intel® Core™ i7-4770K 3.50 GHz 8MB Intel Smart Cache LGA1150 (All Venom OC Certified)

FAN: * Cooler Master Seidon 240M Liquid Cooling

CPU Cooler - Extreme Performance CPU Cooler [+61] (Single Standard 120MM Fan)

HDD: 250GB Samsung 840 EVO Series SATA-III 6.0Gb/s SSD - 540MB/s Read & 520MB/s Write (Single Drive)

HDD2: 2TB (2TBx1) SATA-III 6.0Gb/s 64MB Cache 7200RPM HDD (Single Drive)

IUSB: Built-in USB 2.0 Ports

MEMORY: 16GB (8GBx2) DDR3/1866MHz Dual Channel Memory (Corsair Vengeance)

MOTHERBOARD: GIGABYTE Z97X-Gaming 3 ATX w/ Killer GbLAN, 3 PCIe x16, 3 PCIe x1, 1 PCI, 1 x M.2, 1 x SATA Express, or 6x SATA 6Gb/s (Extreme OC Certified)

NETWORK: Onboard Gigabit LAN Network

POWERSUPPLY: 850 Watts - Corsair RM850 80 PLUS GOLD Certified Fully Modular Ultra Quiet Power Supply

SOUND: * ASUS Xonar DGX 5.1 Channels 24-bit 96KHz PCIe Sound Card

VIDEO: * NVIDIA GeForce GTX 780 Ti 3GB GDDR5 PCIe 3.0 x16 Video Card [+682] (* EVGA Superclocked W/ ACX Cooling)

WNC: GIGABYTE GC-WB867D-I 802.11AC Wi-Fi up to 867 Mbps + Bluetooth 4.0 Combo w/ Dual Antenna PCI-E Adapter

The only thing needed to upgrade here is your GPU. High end GPUs will be overkill at 1080p with your current monitor, a 1440p would be a nice upgrade to suit either a GTX 1080 or 1080 TI.

@MonsieurX: i was looking for a 1080ti but I can't find them in Stock. Is the 1080ti a lot more powerful than the 1080? Also, what kind of monitor specs would you recommend? I've heard of BenQ, are they really good?

About 20% more powerful for 4k content. Difference should be less at lower resolutions.

If you play FPS,you might want to consider a 1440p 144hz monitor like the Asus PG279Q ROG Swift or Acer Predator XB271HUA. Otherwise, aim for 1440p,IPS panel and low response time.

Check individual monitor models for reviews instead of manufacturers

@MonsieurX: is it worth running games at 4k currently? Seems like the 4k versions of the monitors you listed only are 60hz. I do play some fps games like overwatch. I also have a Samsung ks8000 that's 4k HDR+. Is that decent for gaming? I use it for 4k streaming movies from Netflix