A marginally different take, as the LG1200 platform is dead now and will never get anything newer, so I tried adding up your parts cost (some £750) and seeing what I could do with AM5
PCPartPicker Part List:
https://uk.pcpartpicker.com/list/2tYxVW
CPU: AMD Ryzen 5 7600 3.8 GHz 6-Core Processor (£192.95 @ AWD-IT)
CPU Cooler: Thermalright Peerless Assassin 120 SE 66.17 CFM CPU Cooler (£39.00 @ Computer Orbit)
Motherboard: Gigabyte B650M D3HP AX Micro ATX AM5 Motherboard (£145.00 @ MoreCoCo)
Memory: Corsair Vengeance 32 GB (2 x 16 GB) DDR5-6000 CL36 Memory (£105.00 @ Amazon UK)
Storage: Western Digital Black SN770 1 TB M.2-2280 PCIe 4.0 X4 NVME Solid State Drive (£63.98 @ Box Limited)
Case: Fractal Design Torrent Compact ATX Mid Tower Case (£112.99 @ Scan.co.uk)
Power Supply: Corsair RM850e (2023) 850 W 80+ Gold Certified Fully Modular ATX Power Supply (£120.23 @ NeoComputers)
Total: £779.15
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2024-01-05 18:29 GMT+0000
CPU is a bit slower here and there (not by much in the real world - the Zen4 Cores are newer, clock higher, and more efficient) but honestly, anything more than six cores/twelve threads is ample for most day to day, non-specialist work. IE if you're doing extremely hard math in excel, you might notice a difference, but in the real world, you set the thing running and get a cuppa, don't you?
Worth noting that the P/E cores on the intels is a bit of a fib; the e-cores are actually less efficient perf-per-watt, they're allgedly only more efficient in size - story is, Intel literally can't fit enough P-cores (the real ones that do the heavy lifting) into the die space because they're old tech 10nm jobs, so they had to put cut down cores in there to make up the numbers to compete with AMD from a marketing standpoint. Yes, it's fucking idiotic. The 12700 there is really an 8-core/16 thread part in every respect that matters.
With respect to future proofing, lets say in six months to a years time you bung £500 at a 1440p GPU (4070/7800XT) (which you could do with the intel, too) but then in two or three years time when you think you might want more CPU performance (maybe some new tech comes along that really hammers the CPU - fuckin' ray traced badger testicles on your desktop that make your dinner or whatever)
With the Intel platform, you're having to get new motherboard, RAM and CPU, and that means your CPU choice is restricted to mid-range stuff from a budgetary standpoint. If you have £500 to spend, £300 of that is going on MOBO/RAM leaving £200 for CPU.
With the AMD you should be able to just flash the BIOS and dump that entire budget into the CPU. So instead of getting something a bit mid, you can go for something top banana. 16 core, 32 thread X3D madness, etc.
The AMD 7600 is significantly easier to cool, too - those i7s 12700s can pull knocking on 200w just by themselves. The Peerless Assassin in my list above could probably just about handle it but the 212 you've got there isn't as good as the current crop of air coolers (see here:
https://www. reddit.com/r/buildapc/comments/r6chb8/i712700k_with_high_temps_paired_with_cm_hyper_212/ ) and is considered a bit old hat - so I'd not use it.
I've got a Noctua NH12-redux or something - the billy basic Noctua 120mm cooler - and on my 7600, and it's considered a bit old hat, too - but because the CPU never pulls more than about 70w, it barely gets above 65deg under load unless I do something deliberately heat generating like run AVX crap on it, where it gets to...oooh, 75deg. It never thermal throttles, something that I'd not trust the i7 to do, even with a good air cooler.
I did blow out a bit on the GPU and get a Nitro 7800XT which has a massive heatsink, but ultimately I can play UE5 engined games at 60fps at 1440p and the system is almost entirely silent, because
The chassis (Fractal Torrent Compact) pulls in huge volumes of air, quietly thanks to dual 180mm fans
The CPU draws less power, meaning it's fans barely spin up as the air cooler is well fed with air from the case
The GPU has a massive heatsink meaning it doesn't run the fans too much either, and again, the airflow from the case means it doesn't have to work hard. There's no 'stale' warm air in there.
In short I have a very fast machine, and it only makes a noise if I go out of my way to make it generate heat - in actual real world use, it's near silent with any non-synthetic workload.
That said, my idea above is really aimed at someone who wants to do some decent gaming a fair bit, and other than your cooler and storage (as Matty noted) and the chassis (eew, RGB, but really just personal preference for me - I really do like that Torrent chassis in all black) there's nothing really 'wrong' there I don't think.
My shopping list based around an i7 12700 on a DDR4 mobo (if you intend to keep it for another five to ten years, no point worrying about DDR5 carry-forward, we'll be on DDR6 by then) and with that Fractal case in there because I'm a tart.
PCPartPicker Part List:
https://uk.pcpartpicker.com/list/nPP49c
CPU: Intel Core i7-12700K 3.6 GHz 12-Core Processor (£269.99 @ Amazon UK)
CPU Cooler: Thermalright Peerless Assassin 66.17 CFM CPU Cooler (£38.68 @ Amazon UK)
Motherboard: Gigabyte B760M DS3H DDR4 Micro ATX LGA1700 Motherboard (£100.97 @ Amazon UK)
Memory: Corsair Vengeance LPX 32 GB (2 x 16 GB) DDR4-3600 CL18 Memory (£73.97 @ Amazon UK)
Storage: Western Digital Black SN770 1 TB M.2-2280 PCIe 4.0 X4 NVME Solid State Drive (£63.98 @ Box Limited)
Case: Fractal Design Torrent Compact ATX Mid Tower Case (£112.99 @ Scan.co.uk)
Power Supply: Corsair RM850e (2023) 850 W 80+ Gold Certified Fully Modular ATX Power Supply (£109.73 @ Amazon UK)
Total: £770.31
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2024-01-05 19:16 GMT+0000
That was a fun couple of hours of fantasy PC speccing and waffling while my former workplace fucked up their entire billing system for want of the correct ethernet port after moving a server