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G.Skill MB850G PSU, 80 Plus Gold, Fully Modular ATX Power Supply 850 Watt, Compact 140mm Size, 120mm Cooling Fan, Gaming Computer Power Supply

4.4 4.4 out of 5 stars 182 ratings

$89.99
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850 Watts
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Purchase options and add-ons

Model Name MB850G
Brand G.Skill
Compatible Devices Personal Computer
Connector Type ATX, Floppy
Output Wattage 850
Form Factor ATX12V / EPS12V
Wattage 850 watts
Cooling Method Air
Item dimensions L x W x H 5.9 x 5.5 x 3.3 inches
Item Weight 6.3 Pounds

About this item

  • ATX 850W PSU with continuous power supply. A solid foundation for a gaming rig, media creator, workstations, and even for next-generation system build.
  • 80 PLUS Gold certified: ensures up to 90% power efficiency at 50% load, lowering energy consumption, heat, and noise. Compliance with Intel ATX 12 Volt 2.5 and EPS 12V 2.92 standards.
  • Fully Modular: modular flat cables increase airflow, reduce clutter, and improve overall efficiency and thermal performance.
  • Heavy protection including OVP, UVP, OCP, OPP, SCP and OTP. Active clamp and DC-to-DC converter design to improve output voltage stability.
  • Quiet and compact: the gaming power supply’s 150mm long and 140mm-wide dimensions make it easily fit into most computer cases. Virtually inaudible120mm fan superior cooling performance.
  • Connectors: 1x 20+4pin/ 1x 8pin CPU/ 1x 4+4pin CPU/ 6x 6+2pin PCIe/ 9x SATA/ 3x 4pin Molex/ 1x Floppy.
  • 5 Year Warranty and 24/7 customer service, if you have any suggestions or if there are any problems, feel free to send us a message.

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G.Skill MB850G PSU, 80 Plus Gold, Fully Modular ATX Power Supply 850 Watt, Compact 140mm Size, 120mm Cooling Fan, Gaming Computer Power Supply

G.Skill MB850G PSU, 80 Plus Gold, Fully Modular ATX Power Supply 850 Watt, Compact 140mm Size, 120mm Cooling Fan, Gaming Computer Power Supply


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Product Description

G.Skill 750/850 Watt Power Supply 80 Plus Gold Fully Modular Gaming Desktop PC PSU 120mm Cooling Fan
G.Skill 850Watt 80 Plus Gold ATX Fully Modular Power Supply

G.Skill 850Watt 80 Plus Gold ATX Fully Modular Power Supply

Stability and reliability are the top priority of any power supply, and the G.SKILL PSU series is designed and constructed to efficiently and reliably supply continuous power to every single component of your system.

At its core, the G.SKILL power supply is built with 100% Japanese high quality capacitors for durability, certified with 80 PLUS Gold for 90% efficiency, and features a120mm fan to keep noise and temperature low.

Finally, for an easy setup, the full modular design reduces cable clutter and improves case airflow, making the power supply the perfect choice for a clean and stable high end workstation or gaming PC build.

  • Model: MB850G
  • Modular: Fully Modular
  • Combined +12V Rating: 850 Watts
  • Type: Desktop ATX PSU
  • Rating: 80 PLUS Gold Certified
  • AC Input: 100-240VAC, 10A, 47-63Hz
  • Fan Size: 120mm/4.72inch
  • Product Dimensions:150mm(W)x140mm(L)x86mm(H)/5.9x5.5x3.3inches

Fully Modular Power Supply Unit Switching Power Supply

80PLUS Gold Certificated, with 90% efficiency at 50% load, low energy consumption, heat, and noise.

Active Power Factor Correction  and DC to DC converter design to improve output voltage stability

Fully Modular Power Supply Unit

Fully Modular Design. Cleaner cable management, reducing clutter, and improving airflow.

80 PLUS Gold Certificated

High-Efficiency: 80PLUS Gold certified, with 90% efficiency at 50% load, lowering energy consumption, heat, and noise.

Active PFC

Stable Output: Designed with active power factor correction to maximize stability and minimize electrical ripple.

Assembled with Japanese brand capacitors and premium components to ensure an extended durability

Ultra Quiet 120mm Fan Provides silent cooling and better heat dissipation for everyday use

Protection from electrical and thermal irregularities with OVP, UVP, OCP, OPP, SCP, and OTP.

High-Quality Components

Premium Components: Assembled with premium quality capacitors and components to ensure extended durability.

Ultra Quiet 120mm Fan

Ultra Quiet 120mm Fan: Provides silent cooling and better heat dissipation for everyday use.

Full Power Protection

Full Protection: Protection from electrical and thermal irregularities with OVP, UVP, OCP, OPP, SCP, and OTP.

094516 Gskill 750watt fully modular psu 80+ gold 094524 Gskill 850watt fully modular psu 80+ gold 405209 PowerSpec 650watt fixed  psu 80+ bronze 402404 PowerSpec 650watt Semi-modular psu 80+ bronze 402362 PowerSpec 750watt semi-modular  psu 80+ bronze 681833 PowerSpec 850watt fully modular  psu 80+ bronze
G.skill 750watt 80+ Gold Fully Modular ATX PSU G.skill 850watt 80+ Gold Fully Modular ATX PSU PowerSpec 650watt 80+ Bronze Fxied ATX PSU PowerSpec 650watt 80+ Gold Semi-Modular ATX PSU PowerSpec 750watt 80+ Gold Semi-Modular ATX PSU PowerSpec 850watt 80+ Gold Fully Modular RGB ATX PSU
Customer Reviews
4.4 out of 5 stars
182
4.4 out of 5 stars
182
4.5 out of 5 stars
320
4.5 out of 5 stars
320
4.5 out of 5 stars
320
4.6 out of 5 stars
22
Price $83.99 $89.99 $59.99 $61.99 $73.99
Brand G.Skill G.Skill PowerSpec PowerSpec PowerSpec PowerSpec
Combined +12V Rating 750 Watt 850 Watt 650 Watt 650 Watt 750 Watt 850 Watt
Energy Efficiency 80 PLUS Gold Certified 80 PLUS Gold Certified 80 PLUS Bronze Certified 80 PLUS Bronze Certified 80 PLUS Bronze Certified 80 PLUS Gold Certified
Fan Size 120mm/4.72inch 120mm/4.72inch 120mm/4.72inch 135mm/5.31inch 135mm/5.31inch 135mm/5.31inch

From the brand

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G.Skill MB850G PSU, 80 Plus Gold, Fully Modular ATX Power Supply 850 Watt, Compact 140mm Size, 120mm Cooling Fan, Gaming Computer Power Supply
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Price$89.99$99.99-8% $110.99
List:$119.99
$266.89-14% $94.99
List:$109.99
-29% $99.99
List:$139.99
Delivery
Get it as soon as Monday, May 20
Get it as soon as Thursday, May 16
Get it as soon as Friday, May 17
Get it May 16 - 20
Get it as soon as Thursday, May 16
Get it as soon as Thursday, May 16
Customer Ratings
Value for money
3.9
4.8
4.1
3.8
4.3
4.2
Easy to install
3.8
4.8
4.4
4.4
4.5
4.5
Noise level
3.5
4.6
4.3
4.3
4.5
4.5
For gaming
3.1
4.4
3.6
4.6
4.0
Energy efficiency
3.9
4.3
4.5
4.8
Sold By
Micro Center
ARESGAME TECH
Amazon.com
My Grand Exchange
Amazon.com
Amazon.com
power supply design
Full Modular
Full Modular
Full Modular
Full Modular
Full Modular
Full Modular
connector type
ATX, Floppy
ATX
ATX
24-pin
ATX
ATX
form factor
ATX12V / EPS12V
ATX
ATX
ATX
cooling method
Air
Air
Air
Air
Air
Air
min input voltage
100 volts
100 volts
220 volts
12 volts
fan count
1
1
1
1

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Customer reviews

4.4 out of 5 stars
4.4 out of 5
182 global ratings

Customers say

Customers like that the power supply is quiet. They appreciate the adequate cables and screws that are provided for hookups. However, some customers report issues with power and quality. They say the power does not turn on and that only 1% of the power supplies are defective. Customers disagree on performance.

AI-generated from the text of customer reviews

4 customers mention4 positive0 negative

Customers are satisfied with the cables of the system power device. They mention that they are adequate, have minimal wires, and are flat and rigid.

"...Plenty of supplied cabling for hookups and the fan is quiet. It's a keeper." Read more

"Works like it should. Minimal wires. Has dual 8 pin CPU for those mobos that have 2" Read more

"...Im sure their power supply will too.All cables and screws were included. Bag with Velcro to store cables.Cables are flat and rigid...." Read more

"...Standard installation, adequate cables, normal noise level." Read more

3 customers mention3 positive0 negative

Customers like the noise level of the system power device. They say it's quiet.

"...Plenty of supplied cabling for hookups and the fan is quiet. It's a keeper." Read more

"...flipping my tower upside down made it work like it should...and it was quiet. Not a permanent solution though...." Read more

"...Standard installation, adequate cables, normal noise level." Read more

3 customers mention3 positive0 negative

Customers appreciate the value of the fully modular power supply.

"...Mine was new and in proper box.89.99 at time of review. Decent price for a modular 750 watt.G.Skill memory has held up for me...." Read more

"...I purchased this unit due to it being fully modular and at a great price for being a minimum gold standard...." Read more

"Great value, Plenty of juice..." Read more

15 customers mention7 positive8 negative

Customers are mixed about the performance of the power supply. Some mention that it works great and is perfect for their build, while others say that it failed on them and stopped working properly. Some say that the power adapter did not work out of the box and that it didn't work for most modern CPU/motherboard setups.

"Works like it should. Minimal wires. Has dual 8 pin CPU for those mobos that have 2" Read more

"The computer kept turning off. They changed the area where you get the most efficiency. Just keep that in mind." Read more

"...Works great. Does not get hot under load.Graphics maxed out on Dying Light 2 and Hitman 3.No issues after 12 hours of game play...." Read more

"...This doesn't work for most modern CPU/motherboard setups." Read more

5 customers mention0 positive5 negative

Customers are dissatisfied with the power of the system power device. They mention that it does not turn on, has no fan bump, and does not light up. Some customers also report that the power supply does not post.

"...I fully expected it to fir up so I hooked everything back up. It did not start. I then unhooked as much as I could to see if it would post...." Read more

"...Not even turning on, no fan bump, no light blink, nothing but silence. Failure for this price is unacceptable." Read more

"...Unit didn’t work. Second one, completely sealed package and still no power...." Read more

"New pc build this power supply would not start. After buying another mother bd. An another set of ram I bought a new power supply it fired right up...." Read more

3 customers mention0 positive3 negative

Customers are dissatisfied with the quality of the power supply. They mention that only 1% of the units are defective.

"...For what I see only 1% of these PSU are defective, according to the reviews, you would expect G.kill to replace them. Microcenter didn't help either...." Read more

"I am not happy with this defective power supply from a company this size, it should be better...." Read more

"Defective..." Read more

This brand new G. Skill power supply does not turn on.
2 Stars
This brand new G. Skill power supply does not turn on.
I am not happy with this defective power supply from a company this size, it should be better. Not even turning on, no fan bump, no light blink, nothing but silence. Failure for this price is unacceptable.
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Top reviews from the United States

Reviewed in the United States on January 4, 2024
Size: 850 WattsVerified Purchase
Have had it connected to a Gigabyte X670 Aorus Elite AX MB, AMD 7900 processor and NVidia RTX 3060 12GB video card for a little over a month. Been constantly monitoring voltage with HWinFO64 to the CPU, GPU and memory. Rock solid from idle to full load; always within span of <10 milivolts. Quality of the cable ends is impressive... fit snug with no side play, snap in and remove easily at both ends. Purchased this on a rebound from a DOA Enermax PSU which also had ill-fitting cable ends that didn't want to lock, or would lock and then couldn't easily remove. Plenty of supplied cabling for hookups and the fan is quiet. It's a keeper.
Reviewed in the United States on April 30, 2024
Size: 650 WattsVerified Purchase
I have been using G.Skilll products for many years now, especially the DDR3 memory. This will be the first time using a G.SKILL power supply. I am hoping for good results.
Reviewed in the United States on February 19, 2024
Size: 850 WattsVerified Purchase
I bought this power supply hoping that my rebuilt rig would boot up. Lo and behold, I got my computer back. I was able to boot up with my new processor and mobo I installed. I don't expect any issues with this power supply. My mobo is the Asus ROG Strix B550-F Gaming WiFi II and processor is the AMD Ryzen 9 5900X.
Reviewed in the United States on January 1, 2024
Size: 850 WattsVerified Purchase
Works like it should. Minimal wires. Has dual 8 pin CPU for those mobos that have 2
Reviewed in the United States on January 4, 2022
Size: 850 WattsVerified Purchase
The computer kept turning off. They changed the area where you get the most efficiency. Just keep that in mind.
One person found this helpful
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Reviewed in the United States on July 1, 2023
Size: 650 WattsVerified Purchase
I replaced a power supply that was acting up. I pulled the old one out and put the new one in. I fully expected it to fir up so I hooked everything back up. It did not start. I then unhooked as much as I could to see if it would post. It did not. I then unhooked the power switch from the computer and replaced it with a test switch. Still did not post. I had an old power supply on the shelf and replaced the new one with only the bare minimum hooked up. It posted just fine. I then hooked everything back up and fired it up again. It started just fine. It was only a 600W supply and this one was a 650. I have built and trouble shot dozens of computers and have lots of spare parts to build new ones or replace defective parts. I know what I am doing. This power supply would not post
Reviewed in the United States on February 19, 2022
Size: 750 WattsVerified Purchase
Its a power supply.
Mine was new and in proper box.
89.99 at time of review. Decent price for a modular 750 watt.
G.Skill memory has held up for me. Im sure their power supply will too.
All cables and screws were included. Bag with Velcro to store cables.
Cables are flat and rigid. All new cables.
If you use the provided molex cable, just know its very tight. Needed to use a small screw driver to open the holes a little bit before it would fit.
Works great. Does not get hot under load.
Graphics maxed out on Dying Light 2 and Hitman 3.
No issues after 12 hours of game play.
UPDATE: AS of 10/6/2022 There have been no issues with this power supply. Other reviewers may have gotten bad or returned unit.
5 people found this helpful
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Reviewed in the United States on August 17, 2022
Size: 850 WattsVerified Purchase
What I like the most, is it's quiet. Prior to purchasing this I had a semi-modular PSU in my system, but the fan was making the dreaded grinding noise and not spinning properly. It was still working, but I found that flipping my tower upside down made it work like it should...and it was quiet. Not a permanent solution though.

I purchased this unit due to it being fully modular and at a great price for being a minimum gold standard. My previous PSU was also an 850 watt.

The only downside, are the cables. They're stiff, flat, and a little challenging to manage in my current tower. I prefer the rounded wrapped ones, but in order to keep things running and avoid spending a few grand on a new system, this does the job it's supposed to do for the time being.

I would recommend for the value and performance (for a fully modular PSU) that doesn't need to be pretty in an older case where all your components are in the open when you take the side panel off. It's probably good for newer towers as well where you can hide your cables and no one will notice.
One person found this helpful
Report