I was talking about the CS550M at 50$.
At the same price the VSM550 is the obvious choice.
With the CS550M even more expensive it's even worse.
But you didn't even get the CS550M, you got the CS450M with only one 6/8 pin PCIe connector. Thanks to pcpartpickers automatic compatibility filter you didn't see the far cheaper 380s with a far higher power limit.
http://pcpartpicker.com/part/powercolor-video-card-axr93804gbd5ppdhe
Yeah, indirectly that PSU cost you >50$ and will limit your GPU upgrade options down the road.

#941
Just because it's more expensive doesn't mean it's better.
http://ssd.userbenchmark.com/Compare/Samsung-850-Evo-500GB-vs-SanDisk-Ultra-II-480GB/3477vs3473

Was the CSM450 on sale?

I did recommend the 850 Evo and VSM 550 back then.
http://pcpartpicker.com/p/kbRX8d

#938
Ok, I'll go a little more in depth about the whole Z and K overclocking shenanigans.
First of all Intel is not your friend, Intel doesn't even like you. Intel likes your money. So if there's a way to get more of your money they'll use that.
That's why you can only overclock -K cpus, they are identical to the non-K models (the 4790K being the only exception so far) except for the ability to be overclocked and the higher price.
But they didn't stop there. There's multiple chipsets with different feature sets. Guess which one is the only one that allows overclocking? The most expensive one, the Z series. Same for dual GPU setups. Why? Because you don't have a choice and they assume that if you want to overclock or use 2 GPUs that you've got enough money to spare.

Sometimes they mess up. With Haswell motherboard manufacturers found a way to unlock overclocking on non-Z chipsets. I'm not sure if you knew about that, but you're lucky, it would've worked. That said, you still shouldn't do it. For the Pentium G3258 it's fine, for an i7-4790K not so much. Z series boards are designed with overclocking in mind, they can handle the 150W an overclocked i7 might draw well. H series not so much. They'll do the 80-90W it draws on stock and not much more (some shitty boards can't even handle that well). That means you won't be able to overcock as high. Maybe it'll just crash, maybe the VRMs will overheat and die, it doesn't matter, it's just not a good idea.

I'm just assuming that you want to overclock because there's an aftermarket cooler in that list.
You didn't tell me your budget so I kept it about the same.
I also assumed that your case is µATX. If not get the full ATX version of the mobo I picked, it's 10$ cheaper.
Also get the CPU+mobo from microcenter if there's one nearby. The CPU is way cheaper and you get another 20$ rebate on the bundle.
Also picked a way better cooler. Bonus: Colour scheme fits the mobo.
850 Evo is faster and cheaper than the Mushkin Reactor.
390 is faster and cheaper than the 970.
Better PSU as well.

PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i7-4790K 4.0GHz Quad-Core Processor ($319.99 @ SuperBiiz)
CPU Cooler: Phanteks PH-TC14PE_BL 78.1 CFM CPU Cooler ($64.99 @ Newegg)
Motherboard: ASRock Z97M Pro4 Micro ATX LGA1150 Motherboard ($91.98 @ Newegg)
Storage: Samsung 850 EVO-Series 250GB 2.5" Solid State Drive ($77.99 @ Amazon)
Video Card: PowerColor Radeon R9 390 8GB PCS+ Video Card ($279.99 @ Newegg)
Power Supply: Cooler Master VSM 550W 80+ Gold Certified Semi-Modular ATX Power Supply ($49.99 @ Newegg)
Total: $884.93
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-12-03 04:57 EST-0500

You could get a 390X
Apart from the case nothing left to improve, really.

#934
I'm assuming no overclocking.
The i7-6700 might/should go down in price a bit once it's in stock everywhere (or you can get it from microcenter if there's one nearby)
.That should leave enough money for a 60Hz monitor (possibly IPS if you want good colours for this one, to watch movies or whatever), which I assume is what you're going for.
You could also replace the case and get something with a bit more room for cable management, but cases are always subject to taste and I'm too tired to whip up a selection right now.

PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i7-6700 3.4GHz Quad-Core Processor ($369.99 @ B&H)
Motherboard: Gigabyte GA-B150M-D3H Micro ATX LGA1151 Motherboard ($62.98 @ Newegg)
Memory: G.Skill Ripjaws 4 Series 8GB (2 x 4GB) DDR4-2800 Memory ($46.99 @ Newegg)
Storage: Samsung 850 EVO-Series 250GB 2.5" Solid State Drive ($77.99 @ Amazon)
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive ($45.99 @ SuperBiiz)
Video Card: PowerColor Radeon R9 390 8GB PCS+ Video Card ($279.99 @ Newegg)
Case: Cooler Master N200 MicroATX Mid Tower Case ($44.99 @ SuperBiiz)
Power Supply: Cooler Master VSM 550W 80+ Gold Certified Semi-Modular ATX Power Supply ($49.99 @ Newegg)
Total: $978.91
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-12-02 17:22 EST-0500

Yes it will stream, provided your internet allows it.

#930
Not sure if you really need 16GB RAM, but on the other hand the only thing dropping down to 8GB would do is enabling a Fury instead of a 390X (you'll see) and I'm pretty sure either are overkill.

There's a few things I'd change.
Fuck all-in-one liquid coolers. http://www.teamfortress.tv/post/469342/pc-build-thread
850 Evo > Ultra II
390 > 970
XL2411Z >>> VG248QE

This is a rough sketch, colours scheme not quite ideal yet. Basically everything black + huge white cpu cooler.
Also get the i7-6700K from microcenter or wait until it's in stock everywhere so the price goes down to MRSP.

PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i7-6700K 4.0GHz Quad-Core Processor ($439.95 @ B&H)
CPU Cooler: Phanteks PH-TC14PE 78.1 CFM CPU Cooler ($84.99 @ Newegg)
Motherboard: Gigabyte GA-Z170M-D3H Micro ATX LGA1151 Motherboard ($114.99 @ Amazon)
Memory: Corsair Vengeance LPX 16GB (2 x 8GB) DDR4-2666 Memory ($82.99 @ Amazon)
Storage: Samsung 850 EVO-Series 250GB 2.5" Solid State Drive ($77.99 @ Amazon)
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive ($45.99 @ SuperBiiz)
Video Card: PowerColor Radeon R9 390X 8GB PCS+ Video Card ($389.99 @ Amazon)
Case: Thermaltake Core V21 MicroATX Mini Tower Case ($39.99 @ Newegg)
Power Supply: Cooler Master VSM 550W 80+ Gold Certified Semi-Modular ATX Power Supply ($49.99 @ Newegg)
Monitor: BenQ XL2411Z 144Hz 24.0" Monitor ($249.00 @ B&H)
Total: $1575.87
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-12-01 17:49 EST-0500

#931
Can't build a laptop. Well you can but I wouldn't recommend it.
I'm all about price to performance ratio and from that standpoint laptops, especially for heavy loads like rendering and video editing, are just a no go

#932
What are you going to be using it for?

#927
Overclocking the CPU will cost at least 100$ and I don't think he needs it, so I wouldn't spend 15% of the budget on it.
Overclocking the GPU is free so he should start with that. Overclocking is always lots of work/experimenting/testing so only once he's done it on the GPU and is definitely willing to put in at least 3 times the effort (unless you're going for the quickest and dirtiest CPU overclock) I'd consider spending those 100$ when the time for a CPU+mobo upgrade comes around in a few years.

Wifi card or is a dongle fine?

"An OS"? Does that mean windows? I will push Linux gaming whenever I can.

I'm not sure if I understand the budget correctly. 1000$ including the monitor, so if he gets one that leaves 700$ for the build, if he doesn't get one then the full 1000$ for the build, right?
His concerns are justified, 120/144fps won't happen in AAA games. Unless he plays CS:GO competitively I don't see a point in sacrificing even more fps in all other games, which he'll play more often.

If you ditch CPU overclocking and the monitor you can build something pretty darn beastly.
PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i5-6600 3.3GHz Quad-Core Processor ($204.99 @ SuperBiiz)
Motherboard: Gigabyte GA-B150M-D3H Micro ATX LGA1151 Motherboard ($59.99 @ Newegg)
Memory: G.Skill Ripjaws 4 series 8GB (2 x 4GB) DDR4-2400 Memory ($39.99 @ Newegg)
Storage: Samsung 850 EVO-Series 250GB 2.5" Solid State Drive ($77.99 @ Amazon)
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive ($39.10 @ SuperBiiz)
Video Card: MSI Radeon R9 390X 8GB Video Card ($374.99 @ Micro Center)
Case: Cooler Master N200 MicroATX Mid Tower Case ($38.25 @ SuperBiiz)
Power Supply: Cooler Master VSM 550W 80+ Gold Certified Semi-Modular ATX Power Supply ($49.99 @ Newegg)
Optical Drive: Asus DRW-24B1ST/BLK/B/AS DVD/CD Writer ($16.15 @ SuperBiiz)
Operating System: Microsoft Windows 8.1 OEM (64-bit) ($80.89 @ OutletPC)
Wireless Network Adapter: Belkin F9L1001 802.11b/g/n USB 2.0 Wi-Fi Adapter ($5.99 @ Micro Center)
Total: $988.32
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-12-01 05:06 EST-0500

Even with only cheap overclocking it doesn't look so hot anymore. http://pcpartpicker.com/p/pFwnxr
And CPU overclocking on a 700$ budget just isn't happening. At least 400$ for CPU+mobo+RAM+cooler. Dropping down to Haswell or microcenter can help but it'll only do so much. DVD+dongle+windows 100$. Case+PSU and only 1 HDD, no SSD, another 100$. That's 600$, 100$ left for a GPU if you don't want an SSD. Even if you manage to push it down 100$ I still don't see 144fps happening, not on even remotely decent settings.

#17
How did we not see this?

Australia
Austraia
Austria

Could be a wormhole.

I don't think that insults can affect geography.

#925
Maybe 5% from the CPU. This is not so much about performance and more about the mobo (SATA Express, M.2, etc.), because if you decide to get new RAM (without RAM your old CPU+mobo would be useless, though you could still sell them) there's no reason to go with Haswell anymore.

That said I haven't tested RAM timings vs speed in TF2 yet. Best case the 2400MHz RAM might get you another 10%, so ~15% total.

#923
Have you tried overclocking already? It won't do too much though.

Otherwise either replace CPU+mobo+RAM, use the old parts for another build or sell them as a bundle.
PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i3-6100 3.7GHz Dual-Core Processor ($108.99 @ SuperBiiz)
Motherboard: Gigabyte GA-B150M-D3H Micro ATX LGA1151 Motherboard ($59.99 @ Newegg)
Memory: G.Skill Ripjaws 4 series 8GB (2 x 4GB) DDR4-2400 Memory ($39.99 @ Newegg)
Total: $208.97
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-11-29 17:23 EST-0500

Or, if you're going for as cheap as possible, keep the RAM and go with Haswell.
PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i3-4170 3.7GHz Dual-Core Processor ($104.99 @ B&H)
Motherboard: Asus B85M-G R2.0 Micro ATX LGA1150 Motherboard ($34.99 @ Newegg)
Total: $139.98
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-11-29 17:30 EST-0500

In theory you could go even lower with the G3258 but the budget doesn't call for it and I don't think it'd handle CS:GO well.

What do you mean better parts with a Haswell build? Skylake is better. And there's still 25£ left to improve whatever you want to improve.

Do you really wifi? Do you really need to spend that much on wifi? Ethernet is always going to be better, you're never going to get close in terms of ping and bandwidth, no matter how much you spend on wifi. If you're close a cable won't be too much of a hassle, if there's multiple walls/ceilings between your pc and your router wifi will get even worse.

Other than that, some better or cheaper alternatives:

PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i5-6600K 3.5GHz Quad-Core Processor (£205.99 @ Ebuyer)
CPU Cooler: Noctua NH-D14 65.0 CFM CPU Cooler (£56.90 @ Amazon UK)
Motherboard: ASRock Z170 Pro4S ATX LGA1151 Motherboard (£83.99 @ Ebuyer)
Memory: Corsair Vengeance LPX 8GB (2 x 4GB) DDR4-2400 Memory (£41.49 @ Ebuyer)
Storage: Samsung 850 EVO-Series 250GB 2.5" Solid State Drive (£58.55 @ Amazon UK)
Video Card: PowerColor Radeon R9 390 8GB PCS+ Video Card (£249.59 @ Overclockers.co.uk)
Case: BitFenix Shinobi ATX Mid Tower Case (£47.62 @ CCL Computers)
Power Supply: Corsair CX 600W 80+ Bronze Certified Semi-Modular ATX Power Supply (£50.99 @ Ebuyer)
Wireless Network Adapter: TP-Link TL-WDN4800 802.11a/b/g/n PCI-Express x1 Wi-Fi Adapter (£24.99 @ Amazon UK)
Monitor: BenQ XL2411Z 144Hz 24.0" Monitor (£206.71 @ CCL Computers)
Total: £1026.82
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-11-29 18:55 GMT+0000

#916
Barely above 1GB on settings that'll drop you down to 30fps.
https://www.techpowerup.com/reviews/Performance_Analysis/The_Witcher_3/3.html
http://www.guru3d.com/articles_pages/the_witcher_3_graphics_performance_review,9.html

There is no need for 4GB VRAM on 1080p
Any settings that would actually warrant 4GB and a 380 won't cut it.

#911
The 380 is faster.
For 1080p I doubt you'll need 4GB.

I really need mod rights to move these things into the PC Build Thread.

Good CPU I understand, good HDD not so much.
Also wired >>>> wireless.

Multiple tasks as in Stream + Game at the same time or something else as well?
A pc won't improve your internet connection. Either you already got good broadband or you don't, whether you've got a toaster or a 5000$ pc won't change that.

As #5 already mentioned, overclocking yes or no?

Is this an upgrade or a new build from scratch? See #9.