Chieftec Atmos 850 W

suvirintojas · Dec 29, 2023

Atmos is Chieftec's latest 80PLUS Gold-rated power supply series built to support the ATX 3.0 specification, aimed at the price-conscious but quality-seeking buyer. Today we're testing out the capabilities of the 850 W unit.

Show full review

R-T-B · Dec 29, 2023

May I just be the first to welcome TPU's new PSU reviewer? I hope this is the first of many quality reviews.

Honestly, it's a solid review and I can't nitpick anything. If I had to say something, I'd say this: You have a little less data than the outgoing reviewer (EMI noise etc) but that requires a large investment for very little meaningful return and I don't expect anything like that off the bat. Overall, great job coming into big shoes. I look forward to more.

ymdhis · Dec 30, 2023

If I may make a suggestion, could you do the tests at specific watt outputs instead of percentages? A 5% test will mean different thing for a 600W and a 850W supply. Instead you could do something like 25W, 50W, 100W, 200W, 300W, etc.. Such numbers would be directly comparable between different models.
Also I'd encourage the low watt efficiency test since when idling, most PCs nowadays operate at ~20-30W or less.

R-T-B · Dec 30, 2023

I agree a very low wattage efficiency test would be a nice addition.

Icon Charlie · Dec 30, 2023

Overall, this is a very nice review on an important component that gets little information/reporting in the tech industry.

Good job on this from the old man. :peace:

DBGT · Dec 30, 2023

Finally, a PSU review.

VulkanBros · Dec 30, 2023

@suvirintojas - do you know which platform it is based on? (Seasonic, FSP, etc) or is it their own creation?

Elisis · Dec 30, 2023

VulkanBros said:
@suvirintojas - do you know which platform it is based on? (Seasonic, FSP, etc) or is it their own creation?

Seems like Andyson PAD35.
Think EVGA GA

ymdhis · Dec 30, 2023

R-T-B said:
I agree a very low wattage efficiency test would be a nice addition.

nl.hardware.info has low watt efficiency tests and even a database driven comparison list. It's not all in english, but easy enough to navigate.

S73fan · Dec 30, 2023

I am really disappointed...

mechtech · Dec 30, 2023

Decent review! I remember chieftec used to have a good presence in North America, but haven't seen much from them in the past while.

A suggestion, perhaps add the OEM/ODM, if possible in the main table.

Edit the 120 euros - is that before or after taxes?

That's about $175 CAD!!

Only a 5 year warranty as well.

Dave65 · Dec 30, 2023

Ive had my differences with TPU but I do appreciate the PSU reviews a lot.. Thanks.

SmokingCrop · Dec 30, 2023

ymdhis said:
nl.hardware.info has low watt efficiency tests and even a database driven comparison list. It's not all in english, but easy enough to navigate.

Hardware.info is shutting down on the first of January though. (Hardware Info stopt in 2024 - Hardware Info)

Jism · Dec 30, 2023

When i see that brand,

Dolby®, Dolby® Atmos and the Dolby logos (Dolby True HD, Dolby Atmos) are registered trademarks of Dolby Laboratories.

Lawsuits coming in in 3....2.....1 ...

bug · Dec 30, 2023

ymdhis said:
If I may make a suggestion, could you do the tests at specific watt outputs instead of percentages? A 5% test will mean different thing for a 600W and a 850W supply. Instead you could do something like 25W, 50W, 100W, 200W, 300W, etc.. Such numbers would be directly comparable between different models.
Also I'd encourage the low watt efficiency test since when idling, most PCs nowadays operate at ~20-30W or less.

Iirc, 80+ specs explicitly list load % instead of set values. So it makes sense reviewers would look at the same marks. And that's fine, if I know how much power my system draws, I can figure out where it lands on that curve.
My only complaint (and that is generic, nothing to do with reviews) is that many systems idle a lot, so they'll sit in the least optimal zone of a PSU most of the time.

ymdhis · Dec 30, 2023

SmokingCrop said:
Hardware.info is shutting down on the first of January though. (Hardware Info stopt in 2024 - Hardware Info)

un fucking believable, I remember searching so long for a site that had proper low wattage efficiency tests and just as soon as I found it, it gets shut down.

ziemniak · Dec 30, 2023

Great start for a PSU review! Congrats

Chomiq · Dec 31, 2023

Jism said:
When i see that brand,

Lawsuits coming in in 3....2.....1 ...

Clearly not Atmos on its own.

ir_cow · Dec 31, 2023

mechtech said:
Edit the 120 euros - is that before or after taxes?

That's about $175 CAD!!

Only a 5 year warranty as well.

I'll take a SuperFlower with a 10 year warranty for cheaper thank you!

Wirko · Jan 1, 2024

So, the reviewer's name means "welder", Google says, and that leaves a positive impression on me. Should handle kiloamperes and fireworks cold-blooded.

The Shield · Jan 3, 2024

Very good review! For a long time I've been hoping to see more PSU articles on TPU...well done, Suvirintojas!
Also, it would be nice to know who the manufacturer is.

System Name	Pioneer
Processor	Ryzen R9 7950X
Motherboard	GIGABYTE Aorus Elite X670 AX
Cooling	Noctua NH-D15 + A whole lotta Sunon and Corsair Maglev blower fans...
Memory	64GB (4x 16GB) G.Skill Flare X5 @ DDR5-6000 CL30
Video Card(s)	XFX RX 7900 XTX Speedster Merc 310
Storage	2x Crucial P5 Plus 2TB PCIe 4.0 NVMe SSDs
Display(s)	55" LG 55" B9 OLED 4K Display
Case	Thermaltake Core X31
Audio Device(s)	TOSLINK->Schiit Modi MB->Asgard 2 DAC Amp->AKG Pro K712 Headphones or HDMI->B9 OLED
Power Supply	FSP Hydro Ti Pro 850W
Mouse	Logitech G305 Lightspeed Wireless
Keyboard	WASD Code v3 with Cherry Green keyswitches + PBT DS keycaps
Software	Gentoo Linux x64

System Name	Pioneer
Processor	Ryzen R9 7950X
Motherboard	GIGABYTE Aorus Elite X670 AX
Cooling	Noctua NH-D15 + A whole lotta Sunon and Corsair Maglev blower fans...
Memory	64GB (4x 16GB) G.Skill Flare X5 @ DDR5-6000 CL30
Video Card(s)	XFX RX 7900 XTX Speedster Merc 310
Storage	2x Crucial P5 Plus 2TB PCIe 4.0 NVMe SSDs
Display(s)	55" LG 55" B9 OLED 4K Display
Case	Thermaltake Core X31
Audio Device(s)	TOSLINK->Schiit Modi MB->Asgard 2 DAC Amp->AKG Pro K712 Headphones or HDMI->B9 OLED
Power Supply	FSP Hydro Ti Pro 850W
Mouse	Logitech G305 Lightspeed Wireless
Keyboard	WASD Code v3 with Cherry Green keyswitches + PBT DS keycaps
Software	Gentoo Linux x64

Processor	i5-4670k @ 4.2 GHz
Motherboard	ASUS Z87 Pro
Cooling	Corsair H105
Memory	G.SKILL RipjawsX 16GB @ 2133 MHz
Video Card(s)	Gigabyte GTX 780 GHz Edition
Storage	Samsung 840 Evo 500GB
Case	Thermaltake MK-1
Power Supply	Seasonic X 750w
Mouse	Razer DeathAdder

System Name	Commercial towing vehicle "Nostromo"
Processor	5800X3D
Motherboard	X570 Unify
Cooling	EK-AIO 360
Memory	32 GB Fury 3666 MHz
Video Card(s)	4070 Ti Eagle
Storage	SN850 NVMe 1TB + Renegade NVMe 2TB + 870 EVO 4TB
Display(s)	25" Legion Y25g-30
Case	Lian Li LanCool 216 v2
Audio Device(s)	B & W PX7 S2e
Power Supply	HX1500i
Mouse	Harpe Ace Aim Lab Edition
Keyboard	Scope II 96 Wireless
Software	Windows 11 23H2

Processor	Ryzen 5700x
Motherboard	Gigabyte X570S Aero G R1.1 BiosF5g
Cooling	Noctua NH-C12P SE14 w/ NF-A15 HS-PWM Fan 1500rpm
Memory	Micron DDR4-3200 2x32GB D.S. D.R. (CT2K32G4DFD832A)
Video Card(s)	AMD RX 6800 - Asus Tuf
Storage	Kingston KC3000 1TB & 2TB & 4TB Corsair LPX
Display(s)	LG 27UL550-W (27" 4k)
Case	Be Quiet Pure Base 600 (no window)
Audio Device(s)	Realtek ALC1220-VB
Power Supply	SuperFlower Leadex V Gold Pro 850W ATX Ver2.52
Mouse	Mionix Naos Pro
Keyboard	Corsair Strafe with browns
Software	W10 22H2 Pro x64

Chieftec Atmos 850 W

suvirintojas

TPU PSU Reviewer

R-T-B

ymdhis

R-T-B

Icon Charlie

DBGT

VulkanBros

Elisis

ymdhis

S73fan

mechtech

Dave65

SmokingCrop

Jism

bug

ymdhis

ziemniak

New Member

Chomiq

ir_cow

Wirko

The Shield

New Member

System Name	Daves
Processor	AMD Ryzen 3900x
Motherboard	AsRock X570 Taichi
Cooling	Enermax LIQMAX III 360
Memory	32 GiG Team Group B Die 3600
Video Card(s)	Powercolor 5700 xt Red Devil
Storage	Crucial MX 500 SSD and Intel P660 NVME 2TB for games
Display(s)	Acer 144htz 27in. 2560x1440
Case	Phanteks P600S
Audio Device(s)	N/A
Power Supply	Corsair RM 750
Mouse	EVGA
Keyboard	Corsair Strafe
Software	Windows 10 Pro

Processor	Intel Core i7-9700K
Motherboard	Gigabyte Z390 Aorus Ultra
Cooling	Corsair Hydro H150i Pro
Memory	2x Corsair Vengeance LPX 16GB 3000 Mhz
Video Card(s)	Inno3D iChill GeForce RTX 2080 Ti
Storage	Samsung 970 Evo 1TB
Display(s)	Asus RoG PG279Q Swift
Case	Fractal Design Define S2 Gunmetal
Audio Device(s)	Asus Xonar Essence STX II (Sennheiser HD 650)
Power Supply	Corsair HX750i
Mouse	Logitech G903
Keyboard	Corsair K70 (Black)
Software	W10 x64

Processor	Intel i5-12600k
Motherboard	Asus H670 TUF
Cooling	Arctic Freezer 34
Memory	2x16GB DDR4 3600 G.Skill Ripjaws V
Video Card(s)	EVGA GTX 1060 SC
Storage	500GB Samsung 970 EVO, 500GB Samsung 850 EVO, 1TB Crucial MX300 and 2TB Crucial MX500
Display(s)	Dell U3219Q + HP ZR24w
Case	Raijintek Thetis
Audio Device(s)	Audioquest Dragonfly Red :D
Power Supply	Seasonic 620W M12
Mouse	Logitech G502 Proteus Core
Keyboard	G.Skill KM780R
Software	Arch Linux + Win10

Processor	Ryzen 7 5800X3D
Motherboard	Gigabyte X570 Aorus Elite
Cooling	Thermalright Phantom Spirit 120 SE
Memory	2x16 GB Crucial Ballistix 3600 CL16 Rev E @ 3800 CL16
Video Card(s)	RTX3080 Ti FE
Storage	SX8200 Pro 1 TB, Plextor M6Pro 256 GB, WD Blue 2TB
Display(s)	LG 34GN850P-B
Case	SilverStone Primera PM01 RGB
Audio Device(s)	SoundBlaster G6 \| Fidelio X2 \| Sennheiser 6XX
Power Supply	SeaSonic Focus Plus Gold 750W
Mouse	Endgame Gear XM1R
Keyboard	Wooting Two HE

Processor	i5-6600K
Motherboard	Asus Z170A
Cooling	some cheap Cooler Master Hyper 103 or similar
Memory	16GB DDR4-2400
Video Card(s)	IGP
Storage	Samsung 850 EVO 250GB
Display(s)	2x Oldell 24" 1920x1200
Case	Bitfenix Nova white windowless non-mesh
Audio Device(s)	E-mu 1212m PCI
Power Supply	Seasonic G-360
Mouse	Logitech Marble trackball, never had a mouse
Keyboard	Key Tronic KT2000, no Win key because 1994
Software	Oldwin