Well, I don’t think you need 8/10/18 Cores and 32GB server grade 2666MHz ECC DDR4-RAM in your gaming PC, nor do you need to connect one 5K Retina Display plus 4*4K UHD displays and set all FIVE screens to show with full resolution & 60Hz refresh rate at the same time.
In short, it’s not a gaming PC, and it’s not targeting generic consumers like you.
Used PC Part Picker For This, In Respect to build GAMING PC!
Well, let’s see:
CPU: unfortunately there is no latest Intel Xeon 8/10/18 cores in the list, so we pick the older (and cheaper OEM) generation, Intel Xeon E5-2640 8 core 2.6GHz instead, which is US$870.
Motherboard: Again, there is no suitable mother board for latest Intel Xeon. So we pick the one that can match with Xeon E5–2640 & DDR4 ECC, so we chose ASUS ROG X99, which is US$311.
Memory: there is no DDR-4 2666MHz server grade ECC RAM in the list. The CRUCIAL DDR-4 2666MHz ECC 32GB is US$335, so we pick something that is close in price, we choose Kingston 32G DDR4–2133 ECC, which is US$322.
Storage: iMac Pro offers 1TB PCI-E SSD. No special preference here so we choose something similar, Mushkin 960GB PCI-E SSD, which is US$834.
Video card: There is no standalone Radeon Pro Vega 56 /w 8GB HMB2 products on the market. Since Vega series is aiming for replacing the graphic workstation grade Radeon Fury X /w 4GB HMB memory, we can assume the price will fall into the same range, but a little bit higher for the extra 4GB memory; so we choose VisionTek R9 Furry X, which is US$700.
Monitor: iMac pro offers 27″ 5120×2880 billion color. There is only one monitor that similar in spec in the list: HP Z27q, which is US$910. This is kinda undervalued through.
Networking. iMac Pro offers 10GbE. No doubt. 10GbE. There are only two 10GbE adaptors in the list, one is Intel, with a whooping US$700+ price tag, the other is StarTech ST10000SPEX, which is US$233.
WiFi: iMac Pro has built-in WiFi. It’s not only a second network interface, it is in face the peer-to-peer (a.k.a. “WiFi Direct”) channel of AirDrop. Let’s not be so picky here, just get a normal 802.11a/b/g/n/ac WiFi adapter. We choose cheap TP-Link, which is US$37.
Case: seems ATX full tower is the only viable choice according to the PCPartPicker. No special preference here so we choose the US$150 Corsair. Plus US$25 Corsair case fan.
Power Supply: so far the total power is whooping 485W. Better pick a 850W power supply. We choose something in mid price range, SuperNova T2, which is US$199.
Thunderbold 3: Sadly there is no such fancy stuff in the category. So we manually add ASUS ThunderboltEX 3. US$65.
Mouse/Keyboard/Speaker: iMac offers bluetooth keyboard and built-in speaker. No special preference here so we choose Logitech, total US$185, since they have fair cost/performance ratio.
Operation system: Windows 10 Pro 64 bits OEM, what else can you have? US$133.
Optical drive & other: Omitted. When did you use CD/DVD last time ?