please advise me about new computer questions

(reposted from SB tech talk forum)

In the heady days of 2011, I defected from the side of apple to buy a then top of the line gaming laptop for the express purpose of both needing a laptop and wanting to play games that didn’t have apple OS versions available, it is the computer on which I am typing now. It’s now 9 years old, hasn’t had the specs to play new games for the past few years, and has the ever-loving crap beat out of it (screws falling out, side panel near CD drive fell off, much hated screen of some weird plastic material that is permanently unclean, it thinks you just closed the screen whenever it gets moved, have smelled burning when under the high load of a wikiwalk, worried that it might die in the next few months).

My old imac that I loved but was older (and felt faster at half the specs) than the laptop died to a lighning strike

I am looking for a new windows computer, this time a desktop

My questions

• 1) Other than price what do people think of getting an imac (specs listed below) and partion installing windows
• 2) Found a good deal on an air-cooled alienware r10 (build configuration below) but worried that it might overheat because DELL + Air-cooling + parts listed, Thoughts?
• 3) How reliable is a water cooled computer, very worried about leaks, have bad habit of hardly ever backing up my computers
• 4) Opinions on avadirect (if went custom built), computers from dell (g5, xps special, alienware r10 / r11) issues not connected to either brand name price hike or non-upgrable proprietary parts
• 5) General Advice after reading below

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Air cool: is it safe to get an alienware r10 and play 4k games on build below or would it overheat?

Found great deal for the following

Alienware aurora ryzen edition r10 gaming desktop
AMD Ryzen™ 7 3700X (8-Core, 32MB L3 Cache, Max Boost Clock of 4.4GHz)(3.6 GHZ base clock)

AMD Radeon™ RX 5700 XT 8GB GDDR6
or
NVIDIA® GeForce® RTX 2060 SUPER™ 8GB GDDR6 (OC Ready) (would take longer to ship but is same price)

16GB Dual Channel HyperX™ FURY DDR4 XMP at 2933MHz;
512GB M.2 PCIe NVMe SSD (Boot) + 2TB 7200RPM SATA 6Gb/s (Storage)

Air Cooled
Dark Side of the Moon chassis with Low-Profile Smart Cooling CPU Heatsink and 550W Power Supply

Dell Wireless DW1810 (1x1) 802.11ac with Wi-Fi, Wireless LAN, Bluetooth 5.0

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Overpriced imac if got windows partition

IMAC
27inch 5k display
3.8GHz 8-core 10th-generation Intel Core i7 processor, Turbo Boost up to 5.0GHz
16GB 2666MHz DDR4 memory
Radeon Pro 5500 XT with 8GB of GDDR6 memory
2TB SSD storage

Could switch to
Radeon Pro 5700 with 8GB of GDDR6 memory
If SB feels strongly about it

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same question of aircooled overheating

dell g5 gaming desktop
10th Gen Intel® Core™ i7-10700KF processor(8-Core, 16M Cache, 3.8GHz to 5.1GHz)
NVIDIA® GeForce® RTX 2070 SUPER™ 8GB GDDR6
16GB, 2x8GB, DDR4, 2933Mhz
256GB M.2 PCIe SSD + 2TB SATA 7200 RPM HDD 3.5"
500W Chassis with Bezel Lighting


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In general

Looking for desktop PC
PC use: for gaming (potentially 4k gaming) / future proof (no upgrades or replacements and no breakdown) for next 6-12 years / tv tropes - youtube - wiki walk with hundreds of chrome tabs open
Budget: 1500 -3000 USD with 3k including tax being hard cap unless I defect back to apple and decide to get one of their new 3.8 ghz 8 core 27inch imac’s and just run windows on a partition on it (edit: budget does not include buying monitor, monitors will have their own budget and are not relevant to this post)
Looking for pre-built: have never built a computer before (don’t know how, and a bit unsure of working off of youtube, especially if getting expensive parts) but could maybe be convinced otherwise if someone could explain it to me and point me to good resources
OS: windows 10

Would prefer
8 core, base 3.6GHZ or better and would strongly prefer 3.8GHZ base
16 GB ram dual channel
8GB graphics card , would prefer to be able to play 4k games if possible
200gb SSD boot, 1 TB hardrive, 500gb SSD would be better
No interest in overclocking, but unlikely to know how to turn it off if it came already configured that way
No interest in side window or RGB
Need some advice on water or air cooled , overheating vs leaks
Undecided if will get 4k or 1080p monitor (cable input not relevant because can get monitor to fit cable)
In US, no brand preference unless you count heretical willingness to pay the apple tax
No interest in modifying / upgrading a computer other than maybe replacing ram

 

iMac is not for gaming. It’s still a good computer though, just not made for that. Edit: this thread is older than I thought.