Build for $1500? (with monitor and OS

I hope this is USD? What do you plan to do with this build? Gaming and editing/recording or just editing/recording?

Slightly cheaper, the noticeable performance at 1080p won't be much at all, still max out any game 1080p but idk about 2K. The build has a 1080p monitor and the whole build should last about 2-4 years with games to come and playing them on at least high presets

PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i7-4790K 4.0GHz Quad-Core Processor ($309.99 @ Newegg)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler ($26.98 @ OutletPC)
Motherboard: ASRock Z97 Anniversary ATX LGA1150 Motherboard ($72.98 @ Newegg)
Memory: G.Skill Ripjaws X Series 16GB (2 x 8GB) DDR3-1866 Memory ($99.99 @ Newegg)
Storage: OCZ ARC 100 240GB 2.5" Solid State Drive ($80.98 @ Newegg)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($52.49 @ OutletPC)
Video Card: Asus GeForce GTX 970 4GB STRIX Video Card ($319.99 @ SuperBiiz)
Case: Thermaltake VL80001W2Z ATX Mid Tower Case ($22.99 @ Micro Center)
Power Supply: Antec Green 550W 80+ Bronze Certified ATX Power Supply ($42.99 @ Newegg)
Operating System: Microsoft Windows 8.1 (OEM) (64-bit) ($87.98 @ OutletPC)
Monitor: Acer G237HLbi 60Hz 23.0" Monitor ($109.99 @ Newegg)
Total: $1221.35
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-05-09 19:13 EDT-0400

this is what i would do 1500 puts you in x99 range
also could cut some corners to lower cost if you want such as less expensive ram and case
PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i7-5820K 3.3GHz 6-Core Processor ($299.99 @ Micro Center)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler ($26.98 @ OutletPC)
Motherboard: MSI X99S SLI Plus ATX LGA2011-3 Motherboard ($159.99 @ SuperBiiz)
Memory: Corsair Vengeance LPX 16GB (4 x 4GB) DDR4-2400 Memory ($179.99 @ Newegg)
Storage: Samsung 850 EVO-Series 250GB 2.5" Solid State Drive ($114.99 @ Amazon)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($52.49 @ OutletPC)
Video Card: Gigabyte GeForce GTX 970 4GB WINDFORCE 3X Video Card ($303.99 @ Newegg)
Case: Phanteks Enthoo Pro ATX Full Tower Case ($99.99 @ Amazon)
Power Supply: EVGA 750W 80+ Gold Certified Fully-Modular ATX Power Supply ($105.99 @ SuperBiiz)
Operating System: Microsoft Windows 8.1 (OEM) (64-bit) ($87.98 @ OutletPC)
Monitor: BenQ GL2460HM 60Hz 24.0" Monitor ($139.93 @ B&H)
Total: $1572.31
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-05-09 19:33 EDT-0400

http://pcpartpicker.com/p/rqyLxr

It came to $1620 which is obviously on the high end (though you can tweak a few parts). However, I did this so I could put in a good monitor:

Asus 27", 2560x1440 IPS.

The rest is pretty straight forward. I picked parts I felt were the best quality but still reasonable priced. The MOTHERBOARD for example has great customer feedback and appears very reliable.

Modular PSU (minimize cable clutter) rated GOLD etc.

I could have saved a bit on DDR3 memory but the color didn't match. Also could save a bit on a Hard Drive. The 3TB model was roughly $100 and 1TB for about $55 so you can decide there.

*The Noctua NH-U12S is an excellent cooler which I've used with an i5-4670K build. The fan spins at 300RPM (if fan profile setup properly) in idle which is silent. That's especially nice since the GPU fans can turn off so you can essentially create a nearly SILENT build.

The EVO on the other hand is a great value but noticeably noisier under load and not completely silent in idle. I think it's worth the extra $30 which is only about 2% of your build cost.

Monitor again:
I've got a 27", 2560x1440 IPS monitor and I love it. There's simply no way I can go back to a 1080p monitor. I choose 1080p or 1440p resolution depending on the game. The higher resolution makes a HUGE DIFFERENCE for games like Starcraft 2, Torchlight etc (top-down "god" games).

Skyrim, Crysis and other shooters tend to not look much better at 1440p so the processing power is usually better served elsewhere.

Update:
I don't recommend the build above which uses a 6C/12T CPU. There's little advantage to gaming however the build ends up similar cost to mine. I personally think putting the money towards the monitor I recommend above is a better way to go.

GTX980??
Here's the "problem" IMO. Ignoring the 512MB "slow memory" issue which is for the most part not a big issue on the GTX970 (it's complicated... can explain if needed), the GTX980 is about $200 more. That money could go towards a 2560x1440 monitor. For most games the GTX980 is overkill at 1080p so while it's suitable for 1440p in many games you don't have the budget for the 1440p monitor with that card.

The performance difference is roughly 15% between a similar 970 and 980 but again the 980 ends up basically overkill at 1080p and applying a virtual 1440p with the new scaling option in the NVidia Control Panel does not make a 1080p monitor look like a 1440p monitor. Also, 27" does look a lot larger than 24" (though you don't want a 27" 1080p monitor).

GAMES for 970/980:

Make sure the store you choose has the game offer for Witcher 3 and Batman Arkham Knight, then redeem the codes ASAP. Pretty sweet deal!