Are Sound Cards Needed These days?

For ultimate audio in a proper two channel and not gaming rig then only the mobo or cards optical or digital outputs are needed to a proper external DAC then on to your pre-amp inputs or receiver. The isolation properties and ability to maintain the minute nuances of signal is much easier but more expensive outboard and not in the computer. Much of it is regulated power supply issues and cross-talk and energy migration limits of a modern computer case. Again this is for extremely critical applications and systems of a very high resolution. USB DAC's have come a long way but still can't compare.
 

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Windows 7 Ultimate 64i7 3770k OC'd 4.6 @ 1.17v, also FX 8120 & i5 ...32 gb G.Skill Sniper DDR3 10-12-12-31 @ 2133XFX Radeon 7870 2GB DDR5
Computer type
PC/Desktop
Computer Manufacturer/Model Number
A blend of brains, brawn and dumb luck.
OS
Windows 7 Ultimate 64
CPU
i7 3770k OC'd 4.6 @ 1.17v, also FX 8120 & i5 miniITX
Motherboard
MSI P67A-GD80 b3
Memory
32 gb G.Skill Sniper DDR3 10-12-12-31 @ 2133
Graphics Card(s)
XFX Radeon 7870 2GB DDR5
Sound Card
Sound Blaster Z Series Card
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(2) LG LED 23" 1920 x 1080 2ms Monitors via mini d-port
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1680 X 1050 p
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Samsung 256 gb 830 SSD sata III
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EVGA modular 1000G2 80% gold rating & APC 1200 RS
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CoolerMaster Storm Styker
Cooling
7 case fans 140mm & 120mm, NZXT Kraken X60
Keyboard
(2) Logitech Illuminated Keyboards (1) usb (1) wireless
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Logitech G700 & T-BC21 - nano nx for the laptop
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Basic 120mbps down
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Trend Micro Titanium Max Security & Malwarebytes Premium
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5 Noctua case fans + 3 Noctua in p/p on NZXT cooler
Integrated hot swap drive bays for 2.5" Drives
(2) Lite-on dvd/cd/Blu Ray optical 22X
Integrated fan controller and led on/off
HP Officejet Pro 8630 all-n-one
Hot-swappable 3.5" hard drive bay
Netgear Nighthawk router
Asus USB 3 & sata 6 PCIe card
Vantec IDE to sata adptr./Ultra sata adptr
Lenovo L420 i5 lappy with m sata
Drobo 5N advanced NAS
Everyone? Never, but casual audio folks, including me at least with my $200 cost mobo the ALC-889 audio is very good.

I still have old sound cards mainly for the old gamepad port.

I overspent in the past on PCI sound cards, won't any more.

Beware of very cheap cards, read up on issues, I had to return one by Diamond would crash frequently, long forgotten though.

If I had to advise someone, assuming they have PCIe x1 port, I'd look for a sound card using that.
Sound cards don't seem to get rave reviews across the board, unless very expensive class, that audiophiles buy, that's all I have noticed looking at them occasionally, but not bought one in 5 years?

You don't have to spend any more than $100 to get a sound card that will be noticeably better than even your onboard audio chip. It would be an improvement that you'd appreciate very much.
 

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