Hi all. I'm working on an idea for my next desktop/workstation build since I stumbled into some resources that make something more awesome than what I currently have a reasonable option.

What I want to use (because I already have these and thus can save money - got a bunch of rackmount computers at auction and got pretty lucky): infinite sticks of 16GB DDR4 3200 (ok, so I have 20 sticks left after selling a bunch, not exactly infinite but good enough for wanting a single maxed-out build) and 4 RTX A4000 16GB cards. Probably I only intend to use 2 of those and sell the other 2. I also am spoiled for options with various 4U rackmount server cases and a couple of them have 1,000W power supplies (the 2 computers that each had 2x A4000 cards had 1kW power supplies).

My current desktop is an i9-11900k / 64GB DDR4 3200 / RTX A2000 6GB. At first I was interested in just popping a couple of the A4000 cards in but then research banged my head into the issue of PCIe lanes being limited by the CPU.

Options I'm currently considering are Threadripper Xen 3 generation (since that uses DDR4 3200, lets me use 8 sticks depending on motherboard, and gives me 128 PCIe 4.0 lanes), EPYC of some variety since some of those also fit into the 'can use tons of RAM and have tons of memory channels + more than enough PCIe lanes' or..... dual Xeon? AMD seems like the better choice though - but correct me if I'm missing something there.

If I've missed any other options that would give me enough PCIe lanes for at least 2 A4000 cards both connected at full PCIe 4.0x16 and the ability to utilize as much of the RAM as I have (and have the advantage of more memory channels than standard desktop processors) please let me know.

Also looking to not break the bank too much, something that fits into the sub-$2K range, or close to that, would be preferable (and cheaper being more preferable). Anything that goes past $3.5K is almost certainly not up for consideration.

Last point of consideration is that I'm not looking for any part of the new build to be less capable than what I already have, and am not looking to spend significant money for a non-significant capability increase.

Use-cases relevant to my desire for the horsepower: video rendering with Blender (I certainly wouldn't mind rendering going a lot faster when outputting H.265 or rendering hour+ videos), and dipping my toes into local AI (have been interested in this but until I lucked into the A4000 cards it wasn't really possible. With a couple A4000 cards I should be able to run some of the lighter-weight models, at least I believe so (I have, as of yet, no experience running local AI). Would be running Linux (I currently use Linux Mint). Gaming is an afterthought and I don't play anything AAA / ultra-high graphics. Mostly for gaming I just enjoy playing Magic: The Gathering Arena as I drink my morning coffee, so no major hardware requirements there.

Thoughts?

Edit: the DDR4 3200 is non-ECC RAM.

Dear Tildesterites: my trusty PC has led a dutiful life of eleven years and, along with my keyboard, has finally met its earthly doom (total organ failure). I wish it luck across the ultraviolet lithographic bridge, at the other side of which we'll someday reunite to play Skyrim together again.

In the meantime, I would like another PC on which to play various modern AAA games except for The Elder Scrolls VI. I'd intended to replace my machine ~4 years ago when it was in fairer health, but other efforts took priority. Since then, the product market has inflated in price and all the SKUs have changed, so I'm back to being mostly clueless about the state of the industry.

I put together a parts list from some basic research and would like a gut check. I'm coming from an i5-4460, GTX 970, and 16 GB RAM at 1080p 144hz, which may as well be neolithic. I only really need this PC to play video games smoothly and to do standard workstation tasks (nothing remarkable).

PCPartPicker Part List

Rationale and notes:

• 60hz to 144hz was the greatest upgrade I ever made and now it seems like 180hz or 240hz is the new 144hz. I've also wanted to move to 1440p for years. I reviewed the Gamers Nexus GPU benchmarks and it seems like 120fps+ is broadly possible at this resolution.
• Nvidia's cards seem unreasonably priced. A friend of mine offered me his RTX 3070 for free, which I would be happy to accept as a stand-in to keep the initial cost down, and in a year I might come back to get a newer card like the 9070 XT or whatever replaces it?
• I'd like an M.2 to keep cable management to a minimum.
• I will not overclock or undervolt the CPU. I'd just like it to run.
• I'd love for the thing to be quiet.

My questions are:

1. Does the build feel balanced? Are there any egregious oversights?
2. How much RAM is prudent, at what speed/latency? Do we expect prices to drop anytime soon?
3. M.2 PCIe 3.0, 4.0, or 5.0 x4? Does this matter for games? Is a dedicated OS drive still best practice?
4. IPS or OLED? WOLED or QD-OLED? Is Freesync Premium sufficient? (@AugustusFerdinand we spoke about this some time ago; has your opinion changed?)

I thank you in advance for your insights. I'm not going to buy this immediately (this summer at the earliest), but I'd like to know how close to reasonable I'm being.

I am a hobby programmer and spend most of my evenings coding. My monitor has a built-in backlight, but I've always found that just a bit too weak for my liking. Turning on the lamp in the room is too bright and produces glare, using a table lamp is directional and imbalanced. Using an LED strip on the underside of the table does not illuminate my desk at all, so it's not particularly useful.

Recently, I stumbled across monitor lights again, and for some reason impulse-bought one. A super simple ~45cm wide, dimmable straight one with warm white colour. Let me tell you this thing is incredible. It provides exactly enough light without producing glare. The light comes from the centre and my hands cast an unobtrusive shadow. I've only used it for a couple of hours at this point, but the difference is remarkable. My eyes feel way less strained.

For context I'm using a 32:9 UW monitor with 1800R curvature, so this doesn't cover more than ~40% of the screen, yet there is absolutely no visible glare at all! The monitor looks completely unaffected.

Do you use one as well? What's your experience with it?