AmacroX Displays Calmer 4 Fanless 500W 80 Plus Gold PSU

btarunr · Jun 3, 2011

PSU maker AmacroX displayed Calmer 4, its new silent PSU for mid-range gaming PCs. The PSU is fan-less, and relies on passive convectional air-flow to cool components inside. It can deliver 500W of power, with an efficiency that earns it 80 Plus Gold efficiency rating. The Calmer 4 has fixed cabling, and provides all essential cables, including two PCI-E cables for a single high-end graphics card. It is backed by a 5 year warranty.

View at TechPowerUp Main Site

RejZoR · Jun 3, 2011

Why is no one making super silent low RPM PSU's? Either you have loud 750W monsters or you have weak 400W or 500W passive PSU's. I'm running a Corsair HX750 modded with 800 RPM Noiseblocker fan (140mm) and you can barely hear a bit of an air whisper when you place your ear like 2cm away from the fan. 2cm! So i have a powerful, dead silent and still cool device. Passive PSU's tend to get quite hot... I mean how hard can it be if i can make it? With use of some heatpipes they could offload the heat from most important components right on the PSU exhaust for maximum effect. Heatpipes are cheap these days as they stick them everywhere...

claylomax · Jun 3, 2011

RejZoR said:
Why is no one making super silent low RPM PSU's? Either you have loud 750W monsters or you have weak 400W or 500W passive PSU's. I'm running a Corsair HX750 modded with 800 RPM Noiseblocker fan (140mm) and you can barely hear a bit of an air whisper when you place your ear like 2cm away from the fan. 2cm! So i have a powerful, dead silent and still cool device. Passive PSU's tend to get quite hot... I mean how hard can it be if i can make it? With use of some heatpipes they could offload the heat from most important components right on the PSU exhaust for maximum effect. Heatpipes are cheap these days as they stick them everywhere...

You must have very good hearing; I've never been able to hear a power supply in all my builds and I used Enermax, Antec and Silverstone so far. And I mean just the psu with nothing plugged using the motherboard connector trick.

RejZoR · Jun 3, 2011

That's because most users have loud gfx card or load CPU cooler. In my case, HDD was suspended on rubber, CPU was running the same low RPM fan, gfx card was also running a high end cooler at very low RPM. But PSU was running the stock fan which was producing a bit annoying buzzing and clicking in very distinctive intervals.

I currently don't have so silent system as i used to have at that time but it's still pretty silent. Actually right now PSU is the most silent component in my system for sure. I could use stronger fan actually but i'll just leave it for now.

qwerty_lesh · Jun 3, 2011

Anted did make the Phantom 500.
It was a passive design but with a fan which would kick in when the temperature got too great for the passive to work effectively, and when it kicked in it would still be nearly silent.

maybe manufacturers just cant mass produce higher wattage power supplies at such a quiet level, or maybe they can and just choose not to.

personally I havent had any loud powersupplies, all of my systems (apart from my microserver) run on antec supplies.

RejZoR · Jun 3, 2011

NesteQ's unique signature are nearly fanles operation PSU's. But i haven't seen any of their units with my own eyes...

Th3pwn3r · Jun 3, 2011

claylomax said:
You must have very good hearing; I've never been able to hear a power supply in all my builds and I used Enermax, Antec and Silverstone so far. And I mean just the psu with nothing plugged using the motherboard connector trick.

Lol, you must be deaf.

I swapped out my PSU fan with a Noctua and it's a night and day difference.

FreedomEclipse · Jun 3, 2011

My corsair HX750 hardly makes a sound.

[H]@RD5TUFF · Jun 3, 2011

RejZoR said:
Why is no one making super silent low RPM PSU's? Either you have loud 750W monsters or you have weak 400W or 500W passive PSU's. I'm running a Corsair HX750 modded with 800 RPM Noiseblocker fan (140mm) and you can barely hear a bit of an air whisper when you place your ear like 2cm away from the fan. 2cm! So i have a powerful, dead silent and still cool device. Passive PSU's tend to get quite hot... I mean how hard can it be if i can make it? With use of some heatpipes they could offload the heat from most important components right on the PSU exhaust for maximum effect. Heatpipes are cheap these days as they stick them everywhere...

Zalman has been making PSU's that are whisper silent and have heat pipes, for years now. The reality is this, the vast majority of people in the market for 700+ watt power supplies, are also going to be running video cards that even on quiet settings completely eclipse any noise from a PSU. High end air cooling is far more audible than any PSU I have ever seen or owned, there is just not market for it, and it would add cost, because most people buy a PSU with the idea of getting 3-4+ years out of it (and some more than that!). I imagine it would be difficult to have the same kind of longevity and efficiency, with higher temps likely to be produced by a quieter cooling solution.

Zubasa · Jun 4, 2011

Th3pwn3r said:
Lol, you must be deaf.

I swapped out my PSU fan with a Noctua and it's a night and day difference.

Calling someone deaf because he can't here his PSU is stupid.

That really depends on what PSU you have, SilverStone PSUs are decent unlike cheap units.
Also the fact that he has a 1000W monster and it is rarely under full load.

jpierce55 · Jun 4, 2011

I can hear my psu plain as day. PSU's with larger fans seem less noticeable..... but the fans can only get so big. The need to start building mufflers around the fans to make them more silent. Yes they can do it. I did it on one. It just needs to have the necessary airflow.

Th3pwn3r · Jun 4, 2011

Zubasa said:
Calling someone deaf because he can't here his PSU is stupid.

That really depends on what PSU you have, SilverStone PSUs are decent unlike cheap units.
Also the fact that he has a 1000W monster and it is rarely under full load.

Anything with a moving parts will create some noise but how audible it is depends on who is listening. Calling someone stupid for calling someone deaf is stupid as well.

I'd also like to add that many things will help produce louder, power supplies. When I first got my Kingwin 1220 watt PSU it wasn't audible, as the fan became dirty and older it became apparent it was there. That's why I swapped out the fan inside for a Noctua, problem solved.

DrunkenMafia · Jun 5, 2011

I just bought a 1000w antec quattro psu and can't beleive they only stuck a 80mm fan on it, its noisey and I can hear it over a std AMD cpu cooler.

Back on topic - fanless with a gold rating is pretty good, it would make a nice heart in a HTPC. I don't really see much amacrox stuff in Aussie, another good psu brand we don't see here is FSP.

System Name	RBMK-1000
Processor	AMD Ryzen 7 5700G
Motherboard	ASUS ROG Strix B450-E Gaming
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Video Card(s)	Palit GeForce RTX 2080 SUPER GameRock
Storage	Western Digital Black NVMe 512GB
Display(s)	BenQ 1440p 60 Hz 27-inch
Case	Corsair Carbide 100R
Audio Device(s)	ASUS SupremeFX S1220A
Power Supply	Cooler Master MWE Gold 650W
Mouse	ASUS ROG Strix Impact
Keyboard	Gamdias Hermes E2
Software	Windows 11 Pro

System Name	Jaspe
Processor	Ryzen 1500X
Motherboard	Asus ROG Strix X370-F Gaming
Cooling	Stock
Memory	16Gb Corsair 3000mhz
Video Card(s)	EVGA GTS 450
Storage	Crucial M500
Display(s)	Philips 1080 24'
Case	NZXT
Audio Device(s)	Onboard
Power Supply	Enermax 425W
Software	Windows 10 Pro

System Name	beast
Processor	3930K
Motherboard	Gigabyte GA-X79-UD3
Cooling	Noctua NH-U12P SE2011
Memory	16GB Kingston Value DDR3 1333Mhz CL9
Video Card(s)	Gigabyte Aorus Elite RTX3060 12GB
Storage	1x 120GB Intel 520 and some spinny bois
Display(s)	3x DELL S2721DGF
Case	Antec P182
Power Supply	Corsair 750w
VR HMD	Oculus Quest 2
Software	Windows 10

System Name	Codename: Icarus Mk.VI
Processor	Intel 8600k@Stock -- pending tuning
Motherboard	Asus ROG Strixx Z370-F
Cooling	CPU: BeQuiet! Dark Rock Pro 4 {1xCorsair ML120 Pro\|5xML140 Pro}
Memory	32GB XPG Gammix D10 {2x16GB}
Video Card(s)	ASUS Dual Radeon™ RX 6700 XT OC Edition
Storage	Samsung 970 Evo 512GB SSD (Boot)\|WD SN770 (Gaming)\|2x 3TB Toshiba DT01ACA300\|2x 2TB Crucial BX500
Display(s)	LG GP850-B
Case	Corsair 760T (White)
Audio Device(s)	Yamaha RX-V573\|Speakers: JBL Control One\|Auna 300-CN\|Wharfedale Diamond SW150
Power Supply	Corsair AX760
Mouse	Logitech G900
Keyboard	Duckyshine Dead LED(s) III
Software	Windows 10 Pro
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System Name	White Boy
Processor	Core i7 3770k @4.6 Ghz
Motherboard	ASUS P8Z77-I Deluxe
Cooling	CORSAIR H100
Memory	CORSAIR Vengeance 16GB @ 2177
Video Card(s)	EVGA GTX 680 CLASSIEFIED @ 1250 Core
Storage	2 Samsung 830 256 GB (Raid 0) 1 Hitachi 4 TB
Display(s)	1 Dell 30U11 30"
Case	BIT FENIX Prodigy
Audio Device(s)	none
Power Supply	SeaSonic X750 Gold 750W Modular
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AmacroX Displays Calmer 4 Fanless 500W 80 Plus Gold PSU

btarunr

Editor & Senior Moderator

RejZoR

claylomax

RejZoR

qwerty_lesh

RejZoR

Th3pwn3r

FreedomEclipse

~Technological Technocrat~

[H]@RD5TUFF

Zubasa

jpierce55

Th3pwn3r

DrunkenMafia

Processor	Core i7-12700k
Motherboard	Z690 Aero G D4
Cooling	Custom loop water, 3x 420 Rad
Video Card(s)	RX 7900 XTX Phantom Gaming
Storage	Plextor M10P 2TB
Display(s)	InnoCN 27M2V
Case	Thermaltake Level 20 XT
Audio Device(s)	Soundblaster AE-5 Plus
Power Supply	FSP Aurum PT 1200W
Software	Windows 11 Pro 64-bit

Processor	e8200 3.93mhz@1.264v
Motherboard	P5E3 Pro
Cooling	Scythe Infinity
Memory	4gb of G.Skill Ripjaw 6-7-7-18@1404 and 1.62v
Video Card(s)	HIS 5770 v2 940/1275mhz stock volts
Storage	1TB Hitachi
Display(s)	Acer 22" Widescreen LCD
Case	Blue Cooler Master Centurion
Audio Device(s)	Onboard audio :(, and Klipsch 5.1 Pro Media's
Power Supply	650 Watt BFG
Software	Vista 64 Ultimate

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Memory	4gb PI 6,8,6,18 1T 1706mhz / 4gb Crucial D9's 1400 @ 6,6,6,18,1T
Video Card(s)	3gb HD7950 / Onboard
Storage	2 x 120gb Sandisk ultra plus 2tb WD / 60gb vertex 2 + 2 x 2tb WD Greens
Display(s)	3x24in Dell Ultra (portrait) / NEC 32" FullHD LCD
Case	LL PC71A Full tower / Antec fusion black with Imon remote Modded for WC
Audio Device(s)	OB / Auzentech cinema 7.1
Power Supply	TT 700w TR2 / TT 600w Litepower modded with Noctua S12 fan.
Software	7 Ult / 7 premium x64