what game is that? wow, so limited.

no.

the motherboard here, is Z87 chip set, intel, and this is its base limit, what It can support and what dell supports.

a 2013 era chip. intel limited to (not dell) i7-4790K  this is the hardware limit,

it does only generation 4 CPU, (intel gen) ok>

i7-4790   (the 4 means generation 4)

so 5 up is , impossible.  even the pin count (package) fails.

the spec, is here. dell

https://downloads.dell.com/Manuals/all-products/esuprt_desktop/esuprt_xps_desktop/xps-8700_Reference%20Guide_en-us.pdf

 

 

 

Welcome to the Dell Community  @Wispr 

You are at the top of the line with the i7-4790.

The Core i7-4790 is based on Haswell core, and it uses Socket 1150.

There are also 77 Haswell processors, that work in the same socket.

http://www.cpu-upgrade.com/CPUs/Intel/Core_i7/i7-4790.html

Best regards,

U2

@Wispr 

Looking at it a little longer your other option could be to upgrade/downgrade to the i7-4770K???

It has a 98% success rate, the same "TDP" and "Steppings"

It is "Unlocked" and can utilize (Intel® XTU)

Intel® Extreme Tuning Utility:

https://downloadcenter.intel.com/download/24075/Intel-Extreme-Tuning-Utility-Intel-XTU-

But I am not sure if it would improve your requirements for gaming??

Regards,

U2

You can use a 4790K in an 8700.  But only a 13% improvement over 4790.  I use OC2 in the BIOS settings on mine for a touch of overclocking.

I could not use the Intel Tuning utility on my 8700.  Tried, but did not succeed.

"Core i7-6770" requirement is based on the bare minimum INTEL GPU.

https://ark.intel.com/content/www/us/en/ark/products/93341/intel-core-i7-6770hq-processor-6m-cache-up-to-3-50-ghz.html

Iris Pro graphics is needed if you don't have a GPU.

If you add a GTX 1060 6 gig card your current cpu will work with all games AND with VR.

https://www.amazon.com/ZOTAC-GeForce-ZT-P10600A-10L-Compact-Graphics/dp/B07SLKXR6S

GTX 1060 6GB is a great choice and works with the stock PSU.  Not nearly as pricey as a 1080Ti.

Better upgrade than the 4790K.

I picked up a used one on ebay for not too many $$$.  Was using that before going up to the 1080Ti and PSU.

David