It really depends on what you are going to edit and also your budget. I will recommend you AT LEAST 8GB RAM or 16, because more than 16 is not really needed.

You will also need some good GPU. I think that a GTX 970 (or maybe even 960) is good enough.

For a CPU I think that a Intel Core i5-4690K or maybe a Core i5-6600, but it really depends on what you want.

You can check the specs of diffrent Intel Core i5 and i7 CPUs in these charts:

• For Intel Core i5-s: http://download.intel.com/support/processors/corei5/sb/intelcorei5comparisonchartrev9.pdf
• For Intel Core i7-s: http://download.intel.com/support/processors/corei7/sb/intelcorei7comparisonchartrev9.pdf

What's your budget? That'd be the best place to start.
Do you do a lot of PS work, and happen to know your average file size?

I have a friend who does quite a bit of PS work, his files can exceed 14GB. Generally with PS, the more RAM you have the better.

Unfortunately I know little about video editing other than it likes cores.

Do you like gaming? Is that a priority at all?
Do you plan to overclock?

 

It really depends on what you are going to edit and also your budget. I will recommend you AT LEAST 8GB RAM or 16, because more than 16 is not really needed.

You will also need some good GPU. I think that a GTX 970 (or maybe even 960) is good enough.

For a CPU I think that a Intel Core i5-4690K or maybe a Core i5-6600, but it really depends on what you want.

You can check the specs of diffrent Intel Core i5 and i7 CPUs in these charts:

• For Intel Core i5-s: http://download.intel.com/support/processors/corei5/sb/intelcorei5comparisonchartrev9.pdf
• For Intel Core i7-s: http://download.intel.com/support/processors/corei7/sb/intelcorei7comparisonchartrev9.pdf

 

Really? I'd recommend a Xeon for what he's doing. Cheaper, more cores.

I was thinking to for a i7 but is it really needed will a i5 do the job? with 16gb of ram

I do do a lot of PS I am not working with files that large I would love to meet this person  who has 14gb files that is pretty cray. and no I do not do any video editing.

no overclocking

how do zeon  perform compared to a i5 or i7 will the motherboard cost more?

I was thinking to for a i7 but is it really needed will a i5 do the job? with 16gb of ram

 

I do do a lot of PS I am not working with files that large I would love to meet this person  who has 14gb files that is pretty cray. and no I do not do any video editing.

 

no overclocking

 

how do zeon  perform compared to a i5 or i7 will the motherboard cost more?

You haven't told us what budget you have.

K series processors will be a waste unless you overclock. You said you aen't overclocking so forget them.

Personally I'd go with a Xeon. Choose your motherboard and see if it supports Xeons on the manafacturers website.

Prices of CPU's will depend on what socket type you decide on. You can still pick up LGA 1155 motherboards that support quad E3 V2 Xeons fairly cheap.

I would go with a xeon e5 or e3 your choice as for a gpu a gtx 970 sli or one 980 ti should do for intensive work loads