Components for a quiet PC?

Tennis987

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So I'm sitting here in my 78 F (25 C) house which is competently normal for California with my FX8350 playing games while my CPU is hitting 56-60 C (the chip thermal throttles at 62 and is unsafe at 70 according to AMD) cooled by my Hyper T4 heat sink and considering the amount of games i will play next year i need an upgrade. Considering my plan for upgrades, my PC is too loud for my taste. Here at idle sitting a foot away or 30 cm is my PC which is about 40 decibels taking a reading from my desk. That is too loud for me (and my friend) and if i am getting an upgrade for my CPU (i5-8400 most likely) i am going to need a new motherboard, new DDR4 RAM, and while I'm at it a new case. Possibly even a new PSU since this Corsair CX is 5 years old and it worries me that i will fry my system from such an old PSU.

Basically I want to make my PC as quiet as possible for my next upgrade. What are some good quiet PC cases preferably with a window, a better heat sink than i have now, and quiet fans unless the case already comes with amazing fans? A person i knew in university had a Corsair Obsidian case. I don't know what kind of case it was and he told me the fans were stock with the case but i could not hear A THING. He opened up the front end just to show me his fans were spinning and the only way i heard the PC was even operating was putting an ear up on side panel. I don't know why but he truly had a quiet PC and i want that.
 
Newer cases with larger fans are inherently quieter. A large cooler with large fans or an AIO water cooler will be quieter. The quiet fans will also push less air but an 8400 should be easy to cool.

What is your budget? Do you need any peripherals like monitor keyboard or mouse?
 
PCPartPicker part list / Price breakdown by merchant

CPU: Intel - Core i5-8600K 3.6GHz 6-Core Processor ($249.00 @ Walmart)
CPU Cooler: EVGA - CLC 280 113.5 CFM Liquid CPU Cooler ($104.89 @ OutletPC)
Motherboard: ASRock - Z370 Killer SLI/ac ATX LGA1151 Motherboard ($109.99 @ Newegg)
Memory: G.Skill - Ripjaws V Series 16GB (2 x 8GB) DDR4-3200 Memory ($154.99 @ Newegg)
Storage: Samsung - 850 EVO-Series 500GB 2.5" Solid State Drive ($126.55 @ Newegg Marketplace)
Storage: Seagate - Barracuda 2TB 3.5" 7200RPM Internal Hard Drive ($58.89 @ OutletPC)
Video Card: EVGA - GeForce GTX 1080 8GB Superclocked Gaming ACX 3.0 Video Card ($474.98 @ Newegg Business)
Case: Corsair - Carbide Clear 600C ATX Full Tower Case ($149.99 @ Newegg)
Power Supply: SeaSonic - FOCUS Plus Gold 550W 80+ Gold Certified Fully-Modular ATX Power Supply ($65.99 @ SuperBiiz)
Total: $1495.27
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2018-08-06 01:00 EDT-0400

Here's some suggestions
 

Tennis987

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I do not need any peripherals. I just need a 8400, a MOBO, 16 GB of ram, possibly a heatsink and a case. Therefore I would believe my budget for everything would be $600.
 
PCPartPicker part list / Price breakdown by merchant

CPU: Intel - Core i5-8400 2.8GHz 6-Core Processor ($195.79 @ OutletPC)
CPU Cooler: CRYORIG - H7 49.0 CFM CPU Cooler ($34.89 @ OutletPC)
Motherboard: ASRock - B360 Pro4 ATX LGA1151 Motherboard ($80.59 @ Amazon)
Memory: G.Skill - Ripjaws V Series 16GB (2 x 8GB) DDR4-3200 Memory ($154.99 @ Newegg)
Case: Fractal Design - Define R6 Black TG ATX Mid Tower Case ($109.99 @ Newegg)
Total: $576.25
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2018-08-06 01:50 EDT-0400
 
It's not so much the case really, it needs to have good airflow and room for 140mm fans. The Focus G's have 120mm fans, but they are quiet and I added Noctua fans were needed. The Focus G's have good airflow however as does the Master Case 5 Pro.

I have 2 Focus G cases and one Cooler Master - Master Case 5 Pro.

All 3 systems are dead quiet, and all 3 have air cooling for the CPU.

I have 3 quiet PSU's, 2x Seasonic Prime Titanium, 650W and 750W and one Seasonic X-Series 650W.

Running Noctua CPU coolers in all 3, NH D15, NH U12S and NH L9x65.

One is the system in my sig, one is a 8700K machine and the last is a 3rd gen i5.

Sitting here right now in a dead silent room with 2 machines running and I can't hear them at all.


Two run 3x case fans and the other has 2.

I can't stand loud systems personally, goes back to the days when everything was loud... I hated it.


 

Tennis987

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I decided to get a Define R5 for $120. Hopefully its worth it. Could not find the one with a glass side panel so I opted for a solid one.
 

Tennis987

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it was slightly bigger and the more i thought about it the glass panel would show my sad build without RGB and be a fingerprint/dust magnet so i opted for the r5. Also I heard the quiet factor is not different between r5 and r6