Middle to high end PC build in small form factor

In a small case you generally want a video card which uses a blower style cooler rather than one which circulates the air. While the circulating kind works great in a roomy case. It just ends up recirculating hot air in small cases. A blower style intakes cool air and exhausts hot air out of the case.

The Prodigy M is reputed to be a pain to setup. Due to complex cable routing. You only have to do it once so it’s not that big of a deal.

CPU cooler: For a small case Water Cooling is a better option. Due to the same reasons as a blower style card. I listed a 140mm cooler for the build due to case constraints. You can go 240mm in that case. It will just be a tight fit.

Hard Drive: The Hybrid drive is a bit of a waste as you already have an SSD. The solid state portion of a hybrid drive is too little to be of much use.

Monitor: That monitor has a slow response time.

RAM: I see you want RGB. The Trident Z RGB 3000Mhz costs considerably less with virtually no impact on performance.

SSD: The Western Digital Black is an M.2 NVMe SSD and much faster than any SATA SSD. It is a better buy for the price than the 850 Evo. I have both an old 840 Evo and 850 Evo. Given what is available now I’d buy the WD Black SSD.

Audio Card: Unless you are an audiophile with a high-end receiver and speakers to match. Skip it. Put the money towards a larger SSD or Monitor with G-Sync.

This build costs about the same to build. It is much faster with an i7-7700K and WD Black SSD. It will also have better cooling performance in that small case. The screen is 144hz and will have much smoother gameplay than that 60hz Dell.

PCPartPicker part list / Price breakdown by merchant

CPU: Intel - Core i7-7700K 4.2GHz Quad-Core Processor ($329.75 @ OutletPC)
CPU Cooler: NZXT - Kraken X41 106.1 CFM Liquid CPU Cooler ($89.88 @ OutletPC)
Motherboard: Asus - STRIX Z270G Micro ATX LGA1151 Motherboard ($186.49 @ SuperBiiz)
Memory: G.Skill - Trident Z RGB 16GB (2 x 8GB) DDR4-3000 Memory ($134.99 @ Newegg)
Storage: Western Digital - Black PCIe 256GB M.2-2280 Solid State Drive ($114.97 @ Jet)
Storage: Western Digital - Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($48.33 @ OutletPC)
Video Card: Gigabyte - GeForce GTX 1080 8GB Turbo OC Video Card ($489.99 @ Amazon)
Case: BitFenix - Prodigy M Arctic White MicroATX Mini Tower Case ($83.99 @ SuperBiiz)
Power Supply: EVGA - SuperNOVA G3 750W 80+ Gold Certified Fully-Modular ATX Power Supply ($105.99 @ B&H)
Operating System: Microsoft - Windows 10 Home OEM 64-bit ($92.99 @ Amazon)
Sound Card: Asus - Xonar DX 24-bit 192 KHz Sound Card ($89.99 @ SuperBiiz)
Monitor: Asus - MG278Q 27.0" 2560x1440 144Hz Monitor ($509.00 @ Amazon)
Total: $2276.36
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2017-05-29 12:03 EDT-0400

Alternate 240mm Water block with RGB.
https://pcpartpicker.com/product/TvfmP6/thermaltake-cpu-cooler-clw107pl12swa

Case:
The Evolv TG (mATX) is a fair bit larger. The interior is quite a bit roomier. Looking at the layout. Installation appears to be straightforward. Rather than all the tucking and cramming to get everything in. You may even be able to get away with a triple fan card. Although I’d still prefer a blower style for that case. Especially if you intend to use an audio card. A one slot gap is too close for comfort with a circulating card in my opinion.
As far as liquid cooling is concerned. The Evolv can handle up to dual 280mm radiators. The 240mm will fit with ease. You may even consider a 280mm model.

The Phanteks Evolv is also ASUS Aura Sync compatible. For RGB lighting.

As for the Corsair Obsidian. Which model? If the 350D a lot of space is wasted with drive bays. It’s a good case and will work fine. I prefer the Phanteks.

GPU:
Blower style card have a different fan design. Rather than the normal bladed fan you are used to seeing. They are recessed. Take a look at the GTX 1080 Founders Edition as an example. Just don’t get an FE they have some throttling issues.
http://images.nvidia.com/geforce-com/international/images/nvidia-geforce-gtx-1080/nvidia-geforce-gtx-1080-Front.png

One drawback of blower style cards is that they are louder. The blower spins at a much higher RPM. That is a price you pay with a confined case.

The ASUS Turbo isn’t overclocked so much. It shouldn’t be as noisy as the Gigabyte. I have an ASUS GTX 970 Turbo. I don’t find it too noisy. Although my case does a decent job dampening sound. When it is noisier I’m gaming and don’t notice.

SSD:
They are faster. The power difference isn’t much and it varies by model. They are standard in high end ultrabooks. The lack of cables is a pro in my book. Even if it uses an extra watt. That is nothing compared to a GTX 1080.

Monitor: I prefer IPS as well. If you are willing to spend the extra money. I would certainly go for it. Just don’t short change yourself by dropping the i7 down to an i5. Considering this is a high-end build. You’ll want a high-end CPU that can handle the heavy lifting in the most CPU intensive games for the next few years. The i5 is a bit overwhelmed by a few of the most demanding titles.