I'm picking a processor; i7 4790k OR i7 6700k

[Seventy2]

Hi there, I'm looking for help on choosing a processor for a new build. I want the CPU to be fairly powerful and future proof. My new pc build is going to be used for gaming and design (3D design may be involved). The i7 4790k and 6700k are in my budget for a CPU (under £300).

If you could help me in any way I'll appreciate it, thanks. (feel free to recommend a different processor)

 

[Suztera]

Note if you get the i7 6700k, remember to factor in DDR4 ram pricing and Z170 pricing, they are typically higher than Z97 counterparts and DDR3 right now.
Either cpu will be fine for your needs.

 

[fatgangsta]

I was going to get a x99 set up and i decided to wait for the Skylake stuff and the Skylake stuff is going to cost me at least £300 cheaper but i would like to know the answer to this

 

[Alain Auclair]

Is your 3d design GPU or CPU intensive. If CPU you may look at X99 system with a I7 5820K with 6 threads

 

[Suztera]

I was going to get a x99 set up and i decided to wait for the Skylake stuff and the Skylake stuff is going to cost me at least £300 cheaper but i would like to know the answer to this

The X99 would still be better for application that scale well with multi cores such as video editing, rendering etc...
The mainstream Skylake cpu aren't anything interesting. We still waiting if Skylake-E is anything special.

 

[Seventy2]

I was going to get a x99 set up and i decided to wait for the Skylake stuff and the Skylake stuff is going to cost me at least £300 cheaper but i would like to know the answer to this

The X99 would still be better for application that scale well with multi cores such as video editing, rendering etc...
The mainstream Skylake cpu aren't anything interesting. We still waiting if Skylake-E is anything special.

The X99 chipset makes the motherboard extra expensive, I'm not sure if it's worth it?

 

[Suztera]

I was going to get a x99 set up and i decided to wait for the Skylake stuff and the Skylake stuff is going to cost me at least £300 cheaper but i would like to know the answer to this

The X99 would still be better for application that scale well with multi cores such as video editing, rendering etc...
The mainstream Skylake cpu aren't anything interesting. We still waiting if Skylake-E is anything special.

The X99 chipset makes the motherboard extra expensive, I'm not sure if it's worth it?

Whether it is worth is down to you, if you absolutely need a six core cpu then the i7 5820k will do its job. It does offers 28 pcie lanes with the i7 5820k.
If I was to upgrade I would have a choice between these parts:
X99 route:

Spoiler

PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i7-5820K 3.3GHz 6-Core Processor (£293.94 @ Scan.co.uk)
CPU Cooler: CRYORIG R1 Universal 76.0 CFM CPU Cooler (£64.98 @ Ebuyer)
Motherboard: MSI X99A SLI PLUS ATX LGA2011-3 Motherboard (£171.03 @ Amazon UK)
Memory: Kingston HyperX Fury Black 16GB (4 x 4GB) DDR4-2666 Memory (£102.47 @ More Computers)
Total: £632.42
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-08-09 20:01 BST+0100

Skylake route:

Spoiler

PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i7-6700K 4.0GHz Quad-Core Processor (£283.87 @ CCL Computers)
CPU Cooler: CRYORIG R1 Universal 76.0 CFM CPU Cooler (£64.98 @ Ebuyer)
Motherboard: Asus Z170-A ATX LGA1151 Motherboard (£117.99 @ Ebuyer)
Memory: Kingston HyperX Fury Black 16GB (4 x 4GB) DDR4-2666 Memory (£102.47 @ More Computers)
Total: £569.31
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-08-09 20:01 BST+0100

A Haswell build might be more ideal and cheaper if you already got DDR3 ram but the next time you upgrade, you will have to get new cpu, new motherboard and new ram.
However, if you take the Gigabyte's promotion "Take one Get two", you could get a Z97 Ultra durable black edition motherboard and qualify a free upgrade to Z170 or any future counterpart within the warranty period. Of course that promotion can change during the 5 year warranty period.

 

[fatgangsta]

I have i5 2500k gtx 570 so anything really is an upgrade

 

[sora]

I have i5 2500k gtx 570 so anything really is an upgrade

I would personally pick the i7-6700k for a newer CPU!

 

[Suztera]

I have i5 2500k gtx 570 so anything really is an upgrade

You should make your own thread.
Personally, I would still hold on with your i5 2500k and overclock it and upgrade the gpu instead,