Upgrading Games PC, Advice Please.

[demotricus]

PC Specs:-

Intel Core i5-4440 @3.10GHz

16GB DDR3

Motherboard:- Memphis-S (Pegatron)

Memory sockets: 2 x DDR3
1 PCI Express x16 (Gen 3.0)
3 PCI Express x1 (Gen 2.0)
1 PCI Express half-length mini card x1

 

The PC was originally a 500-250ea OEM Unit, but was transferred to a newer case.

Stock Hard disk was swapped for a Samsung SSD 120GB (sata) about 2 yrs ago,

PSU was upgraded to 800Watts and a lot of extra Hard disk storage added. Currently sporting 8 Drives totalling around 25 TB

Various GPU`s  in its history, (GTX 630, GTX 650, GTX 960, (now sporting a Gigabyte GTX 1080 8GB)

Monitors, 3 times generic 1920 * 1080 60Hz screens, also an Oculus Rift.

(very much a pick-and-mix PC built with what I had at the time and leaning towards economy).

What to do?

 

Is it worth upgrading the CPU in this, or should I be looking at putting this venerable old workhorse out to pasture
and building a new system from scratch?

I use it for gaming, VR and midi music production & mixing, (ableton live, Plug-ins, Serato DJ Pro... etc) & media playback.

At present it does most I ask of it but I would like to swap/add a 4K monitor for better media playback and better gaming resolution.
How would it cope with this either in its present configuration or if I did upgrade the CPU?
Will I get another year or so of use from it, or should I just go all in, save, and build a new PC?

Just for context, I DO have a couple more PC`s, including a brand spanking new Strix GL703gs gaming laptop But the desktops are both
of about the same age and specs and used primarily for music production.

[Slottr]

A 4790/k would suffice 

[demotricus]

Any advice on a UK supplier?, amazon are quoting around £250 GBP..

 

Edit:- and will the motherboard definitely support that CPU?

[Slottr]

3 minutes ago, demotricus said:

Any advice on a UK supplier?, amazon are quoting around £250 GBP..

 

Edit:- and will the motherboard definitely support that CPU?

eBay, and your current one will.

[demotricus]

Thanks for the advice.