Looking at an upgrade

[89ShadowUK]

Hi guys, some advice really - not sure if it's a silly question or not.

I feel as though my rig is pretty sweet at the moment; see details of specs in this post. But it seems to be struggling with newer releases at times - it's not all that old. Anywho, I've been considering an upgrade - toying with the idea of an nVidia Titan haha - but just wondered if anyone might have any suggestions? Budget about £1500 tops really.

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Display Devices
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Card name: NVIDIA GeForce GTX 780
Manufacturer: NVIDIA
Chip type: GeForce GTX 780
Display Memory: 19367 MB
Dedicated Memory: 3013 MB
Shared Memory: 16353 MB


Operating System: Windows 10 Pro 64-bit
Language: English (Regional Setting: English)
System Manufacturer: ASUS
System Model: All Series
BIOS: BIOS Date: 05/07/13 15:28:50 Ver: 06.05
Processor: Intel(R) Core(TM) i7-4770K CPU @ 3.50GHz (8 CPUs), ~3.5GHz
Memory: 32768MB RAM
Available OS Memory: 32708MB RAM
Page File: 6729MB used, 30841MB available
Windows Dir: C:\WINDOWS
DirectX Version: 12

Anyone see any bottle necks?

Thanks in advance and hope y'all have a good day!