Depends on your definition of "reasonably well" and "well".
Also is that some kind of used build? 3.5 years old CPU.
And how high were they?
Overclocking chipset for a locked CPU.
Low profile cooler in a full ATX case.
850W PSU for a 330W build.

PCPartPicker part list / Price breakdown by merchant

CPU: Intel - Core i7-3770 3.4GHz Quad-Core Processor (Purchased For $0.00)
Motherboard: Asus - B75M-Plus Micro ATX LGA1155 Motherboard ($145.62 @ Amazon Canada)
Memory: Corsair - Vengeance LP 16GB (2 x 8GB) DDR3-1600 Memory ($149.99 @ Amazon Canada)
Storage: Samsung - 850 EVO-Series 250GB 2.5" Solid State Drive ($121.95 @ shopRBC)
Storage: Seagate - BarraCuda 1TB 3.5" 7200RPM Internal Hard Drive ($55.25 @ Vuugo)
Video Card: EVGA - GeForce GTX 1070 Ti 8GB SC GAMING ACX 3.0 Black Edition Video Card ($604.99 @ Amazon Canada)
Case: Cooler Master - N200 MicroATX Mini Tower Case ($45.50 @ Vuugo)
Power Supply: SeaSonic - G 550W 80+ Gold Certified Semi-Modular ATX Power Supply ($94.99 @ Newegg Canada)
Total: $1218.29
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2017-12-03 07:42 EST-0500

Get whatever case you like.
Also I'd recommend getting used RAM + mobo, really not worth paying 300$ for those.
Z77 if it's actually a 3770K.

Any other parts you're reusing, did you just search for an old partlist or is there any other reason why you're restricting yourself to 4+ years old parts?

You could be absolutely certain by trying it with FreeSync on and with FreeSync off.
Also FRTC seems like a more likely candidate.

2673 build as in the one you posted in #2675?

More cores don't really anything for TF2 beyond 3 (or 2+SMT) so if you were to compare the R3 1200 with a Pentium G4560/4600/4620 (all cheaper) the tradeoff would be:
+ more cores on the 1200, same number of threads (so basically no difference TF2)
-lower clockrate and IPC
-more expensive
So specifically for TF2 the 1200 gets you less performance at a higher price. Doesn't make much sense to pick it then, does it?
Mobo is just low end garbage.

-> i3-8100 because a while more cores do barely anything that + more cache still compensates for the clockrate when compared with the G4620 (3.7 vs 3.6), not that much more expensive (still within budget) and obviously better for everything where cores do matter.

#2679
Used parts are actually an option if you're going for as cheap as possible.

PCPartPicker part list / Price breakdown by merchant

CPU: Intel - Celeron G3930 2.9GHz Dual-Core Processor ($35.59 @ OutletPC)
Motherboard: Gigabyte - GA-B250M-DS3H Micro ATX LGA1151 Motherboard ($39.99 @ Newegg)
Memory: Crucial - 8GB (2 x 4GB) DDR4-2133 Memory ($84.89 @ OutletPC)
Storage: Crucial - BX300 120GB 2.5" Solid State Drive ($49.99 @ Amazon)
Case: Zalman - ZM-T1 PLUS MicroATX Mini Tower Case ($28.99 @ SuperBiiz)
Power Supply: Corsair - CXM (2015) 450W 80+ Bronze Certified Semi-Modular ATX Power Supply ($19.99 @ Newegg)
Optical Drive: Lite-On - iHAS124-14 DVD/CD Writer ($10.99 @ Newegg Marketplace)
Operating System: Microsoft - Windows 10 Home OEM 64-bit ($88.89 @ OutletPC)
Software: Microsoft - Office Home and Student 2016 Software ($94.99 @ Amazon)
Total: $454.31
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2017-11-27 19:02 EST-0500

250GB SSD is obviously an option.
G4600 for slightly better performance and much better GPU is also an option
Wi-Fi depending on router your grandparents got. I've got some serious doubts about them a) having 802.11ac and b) actually needing it.

#2680
Bang for buck is very subjective. fps/$ isn't very useful because when we're not talking about competitive 40 fps are painful, 60 fps are fine and 80 fps are mostly wasted (need to cap at 60 because of screen tearing).
You need at least a rough idea of how much performance (at least 1 game + settings/resolution/fps you want) then you can rule out what would be too slow and what would be overkill.

#2673
Didn't get any cheaper.
PCPartPicker part list / Price breakdown by merchant

CPU: Intel - Core i3-8100 3.6GHz Quad-Core Processor ($154.00 @ Vuugo)
Motherboard: ASRock - Z370M Pro4 Micro ATX LGA1151 Motherboard ($135.00 @ Vuugo)
Memory: Corsair - Vengeance LPX 8GB (2 x 4GB) DDR4-3000 Memory ($108.99 @ Newegg Canada)
Storage: Samsung - 850 EVO-Series 250GB 2.5" Solid State Drive ($109.99 @ Memory Express)
Storage: Seagate - BarraCuda 1TB 3.5" 7200RPM Internal Hard Drive ($54.25 @ Vuugo)
Video Card: Gigabyte - GeForce GTX 1050 Ti 4GB Windforce OC Video Card ($199.99 @ Newegg Canada)
Case: Fractal Design - Focus G Mini (Black) MicroATX Mini Tower Case ($67.99 @ PC Canada)
Power Supply: Corsair - CXM (2015) 450W 80+ Bronze Certified Semi-Modular ATX Power Supply ($59.99 @ Memory Express)
Total: $890.20
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2017-11-27 14:13 EST-0500

#2677
If you're going for old parts to save money why not just get used parts?

I don't think you'll be able to find any DDR3 mobo new at this point.
Do you mean mini PCIe? A mini ITX mobo with a mini PCIe slot will be much more expensive.

You'd have to buy an adapter and that'll probably cost you the same as buying a normal sized CD/DVD drive.

Since we're talking about TF2 I'd recommend getting an i3-8100 instead and an SSD. If there's anything on sale it should be on Cyber Monday so I think it'll be better if I make a partlist on that day.

Does that mean you owned 598/558s? Did someone's 598/558s crack and Sennheiser didn't honor the warranty because they fell off a truck instead of being purchased through an authorized dealer? Just because Sennheiser doesn't sell some replacements parts because they don't trust you to be able to pull off the repair doesn't mean they don't have them and won't repair headphones that are sent in.

> Takes headphones out of the box
> "There will be suffering"
Looking forward to this completely unbiased review.

I can show you the math on monday if someone else hasn't done so by then.

EDIT:

Aaaaand I was right.

When? Can it wait until after the weekend?

Oh shit I forgot. Sennheiser = HD600/650 because everything else they ever made doesn't matter.

Nice meme.

#24
You might be underestimating how much plastic there is in most headphones. Weight/ease of replacement are also things to consider. But while you're free to question their choices I'd generally assume first that someone who is paid to do a job and hasn't been fired after many years does at least have a basic idea of what they're doing.
Like I said I've never seen them not on sale and they've been playing that weird MSRP game for a while (because of some authorized dealer stuff).
Please don't generalise like that. The HD600/650 have a notoriously narrow sound stage. If all headphones were the same why would any manufacturer bother with more than one model?

Just a reminder:
OP appears to be in France (unless the US recently switched to €) so I don't think deals that are only available in the US are that useful, no matter how good they are.

Also "Sennheiser anything" isn't overrated, their MSRPs are ridiculous though. No one except Sennheiser even tries to sell e.g. HD650s for 500$ and no one in their right mind would buy them for that price.

They shouldn't. Obviously sometimes there's weird interactions because of weird output stages, but other than that it's mostly DAC output vs amp input, gain (you want to be able to use volume control effectively instead of being forced close to min or max) and general usability. Nice if you can test it but most of the time it'll work perfectly fine anyway.

And the Class A fetishists have arrived.