As we all know, the power requirement of new-gen PC components keeps on getting higher and higher, whether it is a CPU, GPU, or even RAM modules these days which need relatively more power due to new memory interface and faster performance. Therefore, choosing the right PSU for your build is very important, especially if you are going for a high-end build. A high-wattage PSU can easily suffice for the power requirements of such components and offer a reliable PC performance. Here are some things to look out for when choosing a PSU.
- Type of PSU: Gone are the days when cable management inside your cabinet used to be a problem. Nowadays, almost all PSUs are available in the modular type, allowing you to choose which power cables you need and remove the ones you don’t use. This keeps your system cleaner and eliminates the possibility of short circuits caused by loose cables touching other components.
- Efficiency: Just like other electrical components, the efficiency of a PSU simply refers to the overall functioning capabilities of the unit. It gives you an idea about the power conversion capacity of the PSU from AC to DC. The efficiency value of a PSU is usually denoted as “80 plus” followed by an efficiency rating. An 80 Plus PSU is nearly 80% efficient at 20%, 50%, or 100% load.
- Wattage Rating: The wattage rating of a PSU is probably its most important factor since it directly tells you the overall power capacity available from the unit. So, it becomes a lot easier to choose the right PSU for your PC build based on your PC components’ power requirement. Right now, an 850 Watts PSU is probably the best option for all types of PC builds, whether you are getting a high-end GPU right now or waiting for the new releases.
Since custom PC building is a very hefty task, there are many things you need to know and take care of before you can finalize the specifications list for your system. But more importantly, you need to choose the right power supply for your PC build before you can move toward other components as the PSU is responsible for supplying sufficient power to all your PC components. As most buyers are going for high-end PC builds, we are bringing this selection of the best 850 Watts PSUs that will surely be perfectly compatible with such builds. You can also look at our “Buying Guide” for the best 850 Watts PSU in case you are unsure about some important specifications or qualities of a PSU.
Best 850 Watts PSU Table
| 850 Watts PSU | PSU Type | Efficiency | Wattage | Buy Now |
|---|---|---|---|---|
| Corsair RMX Series PSU | Modular | 80+ Gold | 850 Watts | Check On Amazon |
| EVGA 220-G5-0850-X1 PSU | Modular | 80+ Gold | 850 Watts | Check On Amazon |
| ASUS ROG Thor PSU | Modular | 80+ Platinum | 850 Watts | Check On Amazon |
| Thermaltake PSU | Modular | 80+ Gold | 850 Watts | Check On Amazon |
| ARESGAME PSU | Modular | 80+ Gold | 850 Watts | Check On Amazon |
| Segotep PSU | Modular | 80+ Gold | 850 Watts | Check On Amazon |
| SilverStone PSU | Modular | 80+ Platinum | 850 Watts | Check On Amazon |
| G.Skill PSU | Modular | 80+ Gold | 850 Watts | Check On Amazon |
Best 850 Watts PSU Reviews
1. Corsair RMX Series PSU
As we all know, Corsair is probably the most popular brand on the market right now for a wide range of PC components. But apart from other options, the PSUs from Corsair are much more popular and widely preferred for high-end builds.
In the 1st place, we are putting the Corsair RMX Series, RM850x power supply unit. THe main reason behind choosing this option for the top position of our list is the reliability of the brand and the fact that tens of thousands of PC owners are already using this PSU. It comes with an 80 PLus gold certification and fully modular design, making it a perfect option for clean PC builds.
The high power efficiency rating of the PSU also denotes lower power consumption as well as lesser noise of the fan while maintaining cooler temperature inside the PSU. The built-in fan of the PSU also has a zero-RPM fan mode for low to medium loads, which brings the sound levels to a bare minimum. It also features a 100% industrial-grade build quality with 105°C capacitors to ensure better system reliability.
Best Features
- Fully modular PSU design
- 80+ Gold certification
- 850 Watts wattage rating
- It has 105°C Capacitors
Pros
- Most popular PSU brand right now
- Gold efficiency rating for better system reliability
- Zero RPM fan mode for extremely silent performance
Cons
- Some other choice with same efficiency are much cheaper
2. EVGA 220-G5-0850-X1 PSU
EVGA is also a very famous brand for PC components and the PSUs designed by this brand are also very popular and currently being used by thousands of PC owners. Therefore, you should definitely take a look at the PSU developed by EVGA.
In the 2nd position, we have the EVGA 220-G5-0850-X1 SuperNova 850 G5 PSU. Just like our last choice, this is also an 80-plus gold-rated PSU with highly efficient performance as well as a fully modular design to help you manage the cables in your cabinet neatly. The 80-plus rating on this PSU represents nearly 91% efficiency of the unit, or higher for typical loads. The fully modular design of the PSU will also help you manage proper airflow in your system.
The EVGA 220-G5-0850-X1 Super Nova 850 G5 PSU capacitors are made in Japan, ensuring their reliability and safety in extreme load conditions. It also has a fluid dynamic bearing fan as well as a special EVGA eco mode for ultra-quiet fan operation. You will get a 10-year long warranty period on this PSU which is very important considering it’s a high-capacity unit.
Best Features
- Fully modular PSU design
- 80+ Gold certification
- 850 Watts wattage rating
- Comes with 10 years of warranty
Pros
- One of the most reliable options from EVGA or a PSU
- Ultra-quiet PSU performance with EVGA eco mode
- Includes 100% Japanese capacitors
Cons
- Cooling performance could have been better
3. ASUS ROG Thor PSU
Asus also has a lot of different models for almost all PC components, whether it is a CPU, motherboard, or even a PSU. And on top of that, Asus adds some of its exclusive features such as Aura Sync support to its PSUs as well.
In the 3rd position, we have the ASUS ROG Thor Fully-Modular RGB Power Supply. Compared to most other options for an 850 Watts PSU, this PSU model is comparatively a better choice for a gaming PC build. Most importantly, this is a Platinum certified 80 Plus efficiency rated PSU, making it a perfect choice for high-end PC builds with GPUs like the RTX 3090 or the RTX 4090 even. It also has Japanese capacitors for extended reliability and stability of the unit.
Coming to the special features of the PSU, you will notice a compact OLED panel on the PSU itself that continuously displays the current power output level, allowing you to monitor your PSU and your system in real-time. The PSU also has IPX5 wing-blade fans along with IP5X rating to keep the PSU cooler under heavy load. Just like most other Asus ROG series products, this PSU also supports Asus’s Aura Sync technology with addressable RGB lights for RGB customization on your PSU as well.
Best Features
- Fully modular PSU design
- 80+ Platinum certification
- 850 Watts wattage rating
- Offers a compact OLED panel for real-time monitoring
Pros
- One of the few platinum-rated PSUs on the market
- Features Asus Aura Sync RGB lights
- 0db cooling performance with wing-blade fans
Cons
- Most expensive option for an 850 Watts PSU
4. Thermaltake PSU
Thermaltake is also a brand which only deals with PC components, especially power supply units, cabinets, and cooling solutions. The following PSU from Thermaltake is also one of the popular choices that we have on this list today.
The Thermaltake Toughpower Grand is yet another highly popular and reliable power supply unit that you should definitely check out before moving ahead on this list. This 80 Plus gold-rated power supply unit offers 850 Watts power output rating, which is what you need with current-gen PC builds. The unit also has a built-in 120 mm fluid bearing fan to delivery excellent airflow. And as this is a hydraulic bearing fan, you will experience extremely low noise from the fan when you are working with it.
Unlike most other options, the Thermaltake Toughpower Grand is a Kaby Lake ready PSU, meaning that you can pair your Kaby Lake Intel CPU with this PSU and overclock the CPU without worrying about its power supply needs. The fan of this PSU, apart from offering great RGB illumination, also offers a very quiet performance. You can also control the fan separately from the button provided at the back of the PSU.
Best Features
- Fully modular PSU design
- 80+ Gold certification
- 850 Watts wattage rating
- It offers fluid bearing fan
Pros
- Kaby Lake ready PSU for Intel CPU overclocking
- Ultra quiet smart zero fans
- Less than 30 mV low ripple noise
Cons
- RGB illumination might not be useful for everyone
5. ARESGAME PSU
Nowadays, it is getting more and more difficult to create a budget PC build since all PC components are very expensive these days. However, brands like ARESGAME are still offering budget-focused PC components, and its PSU also falls into the same category.
The ARESGAME Power Supply AGK850 is the cheapest option that you will find on our list of the best 850 Watts power supply. This is a dedicated ATX gaming power supply unit offering 80 Plus efficiency rating with gold certification. This means the PSU will be almost 90% efficient under common loads. The DC-DC structure of the PSU also makes it possible to deliver a stable and continuous power supply.
As for its cooling, the ARESGAME Power Supply AGK850 features a 140 mm fan which works silently, but offers a very durable cooling performance. It also includes heavy-duty protections such as OVP/UVP/OPP/SCP for an increased PSU lifespan, which also affects the safety of other components of your system.
Best Features
- Fully modular PSU design
- 80+ Gold certification
- 850 Watts wattage rating
- DC-DC structure for stable and continuous power supply
Pros
- Highly durable 140 mm fan with silent performance
- Includes heavy-duty protections such as OVP/UVP/OPP/SCP
- Up to 90% efficiency under heavy load
Cons
- Not as reliable as other choices for an 850 Watts PSU
6. Segotep PSU
Segotep is also one of the affordable brand choices that we are selecting for this list of the best 850 Watts PSU. Apart from a PSU, you will also find great designs for a PC case from Segotep, which is surely worth checking out.
The Segotep GM850 Power Supply is yet another budget choice for an 850 Watts PSU on our list, which comes with 80 Plus Gold certification for best efficiency and safety of the system. It also has full support for PCIe 5 and ATX 3 since it is a fully modular design, making compatibility and cable management very easy for this unit. This PSU is specially rated for Nvidia’s 20, 30, and 40 series GPUs, and it has been tested to offer reliable performance with the said GPU series models.
The most important feature of this PSU model is that it is capable of holding up to 200% total power excursion and nearly 300% GPU power excursion, making it a much more stable choice than traditional ATX 2.0 PSUs. With that, this PSU can generate up to 600 Watts of power for PCIe 5.0 GPUs, allowing you to overclock your GPU without any second thought. The 120 mm cooling fan of the PSU also operates at nearly 1500 RPM, for a silent but necessary cooling effect.
Best Features
- Fully modular PSU design
- 80+ Gold certification
- 850 Watts wattage rating
- It has 5 years of warranty
Pros
- Capable of holding up to 200% total power excursion
- Suitable choice for overclocked GPUs
- It can generate up to 600W of power for PCIe 5.0 cards
Cons
- Not as safe as a few other options
7. SilverStone PSU
There are only a handful of options like the PSU designed by SIlverStone which are budget friendly models and offer a high-efficiency rating, close to what premium models are offering right now. Silverstone also works with PC cases, offering a wide range of options that you should definitely take a look at.
The SilverStone Technology Strider PS-ST85F-PT is yet another budget choice for an 850 Watts PSU on our list today. But, this is quite a special option since it is rated with 80 Plus Platinum certification, while most other options around this price point offer Gold certification. This means that PSU can offer a pretty high-efficiency percentage, even at high loads. And this is also a fully modular power supply unit and it is fully compatible with ATX12V v2.4 motherboards.
Thanks to the highly efficient performance of the PSU as well as the cooling fan that comes built-in with the unit, the PSU can easily offer a 24/7 continuous power supply without crossing the 40℃ operating temperature threshold. And the ultra-silent 120 mm fan of the PSU also offers an intelligent semi-fanless operation, offering extremely quiet performance when there is low load on the PSU.
Best Features
- Fully modular PSU design
- 80+ Platinum certification
- 850 Watts wattage rating
- Comes with an ultra-silent 120 mm fan
Pros
- 100% modular design compatible with ATX12V v2.4
- Offers stable output at 40℃
- Features 120 mm fan for efficient cooling
Cons
- Relatively pricier than any other Gold-rated PSUs
8. G.Skill PSU
In the end, we have decided to include yet another budget choice for an 850 Watts PSU from the brand G.Skill. If you have ever built a custom PC before, you must be familiar with the brand G.Skill, more specifically because of its memory modules and PC cases, as they are very popular.
Finishing up our picks for the best 850 Watts PSU, we have the G.Skill MB850G PSU. Like most other options we have seen so far, this PSU model also offers 80 Plus gold certification with a fully modular design, making it an ideal choice for a new-gen powerful PC build. But this is a relatively compact 140 mm PSU that features a 120 mm cooling fan, offering sufficient cooling despite the smaller form factor.
The G.Skill MB850G PSU is also backed by 5 years of warranty, which may be lower than what other options might offer, but it’s always better to have some warranty on a PSU. The 120 mm fan of the PSU is virtually inaudible from the outside, offering a quiet and distraction-free performance. The connectors included with the PSU are 1x 20+4 pin / 1x 8 pin CPU / 1 x 4+4 pin CPU / 6x 6+2 pin PCIe / 9x SATA, and a 3x 4 pin Molex.
Best Features
- Fully modular PSU design
- 80+ Gold certification
- 850 Watts wattage rating
- Multiple important connectors are included
Pros
- It comes with 5 years of warranty
- DC-to-DC converter design
- Relatively compact PSU measuring 150 mm x 140 mm
Cons
- Warranty period should have been longer
Buying Guide For The Best 850 Watts PSU
The PSU plays a very important role in the overall working of your PC and all of the components installed on it. Without a proper PSU, you won’t be able to connect these components to a reliable power source, causing them to malfunction or sometimes not even work at all.
For example, if your GPU has a power rating of 450 Watts and you are using it with a 500 or 550 Watts PSU, you won’t get as good of a performance from the GPU as you would when you connect it with an 850 Watts PSU. With the increasing power demands of new-gen PC components, 1000 Watts or 850 Watts PSUs seems to be the only good options left in terms of power supply capacity, which can be paired with these systems. If you are not sure how you can buy a decent PSU, worry not. We will be going over all the important factors of an 850 Watts PSU in our buying guide below.
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Type
There are 2 main categories of PSUs if you were to consider all options broadly which are modular and non-modular. A non-modular PSU is an older design for a PSU which was used for more than a decade, until it started causing installation issues, especially after the release of new-gen GPUs which are very large in size.
The only difference between modular and non-modular PSUs is the able attachment. A non-modular PSU has all its cables permanently attached to the unit, making it more challenging to manage cable clutter inside the computer case. On the other hand, modular PSU types have detachable cables, allowing the user to connect only the necessary cables to the components, reducing clutter and improving airflow.
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Efficiency
The efficiency of a PSU is yet another very important factor that you should not overlook while you are buying a new PSU. And since PSUs deal with such high amounts of electrical current, it is even more important to pay attention to the efficiency rating to keep your components safe and maintain lower running costs of the system.
The efficiency of a PSU simply refers to the amount of power that the PSU can convert from AC to DC while keeping the energy loss to a minimum. For example, if a PSU is delivering 400 watts of power to the components and drawing 500 watts of power from the AC source, its efficiency would be 80%. These PSUs are denoted by an 80 Plus rating ensuring that you will get at least 80% efficiency with these PSUs at 20%, 50%, or 100% load.
Another thing to keep in mind while checking the efficiency of a PSU is to take a look at its certification level. You will find 4 different types of certification level for an 80 Plus rated PSU that are Bronze, Silver, Gold, and Platinum. As you can imagine, bronze is the lowest option in terms of efficiency, offering only 82% efficiency under load, whereas platinum-rated PSUs can offer up to 90% efficiency at 50% or even 100% load. In comparison, a platinum-rated PSU is obviously the better choice. However, you will find that these options are also more expensive, making silver or gold options a proper choice for a budget PC build.
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Cooling
Almost all electrical components that operate at a high power capacity generate a lot of heat and a proper cooling solution must be implemented if you want to use such components for prolonged amounts of time. The same goes for a PSU, especially the ones that are mentioned in this guide as they are rated for 850 Watts of power rating. The importance of cooling on a PSU lies in its impact on the PSU’s reliability, performance, and lifespan.
If the heat is not effectively dissipated, it can cause thermal stress on the PSU’s components, leading to a shorter lifespan and potentially causing permanent damage. A poorly cooled PSU can also generate more noise due to increased fan activity, making it an annoyance in quiet environments. On the other hand, a PSU with a decent built-in fan with a higher RPM rating can provide better performance and reliability, and may even result in a longer lifespan. It can also reduce the noise generated by the system by reducing the load on the cooling fans.
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Connector Type
Another thing that you should keep in mind when you are choosing a PSU is to check the connector type present on the PSU, whether it is a modular or non-modular option, to get an idea about its compatibility with other system components you are going to install in your build. Different PC components require different types of connectors, and if the PSU doesn’t have the necessary connectors, it can limit the system’s functionality and performance.
Additionally, if the connectors are not properly rated for the components they are powering, it can lead to system instability, damage to the components, and even potential safety hazards. For example, a high-end GPU may require additional power input directly from the PSU, such as 6-pin or 8-pin PCIe connectors, to function correctly. If the PSU doesn’t have these connectors, the graphics card may not receive enough power, leading to poor performance or even system crashes. Similarly, using the wrong connectors or improperly connecting them can lead to electrical damage to the components, posing a safety risk.
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Form Factor
A lot of times, a decent PSU which is capable of powering all of the components you have installed in your system and still has a lot of power supply capacity left for future upgrades would be the wrong choice for your build due to its form factor. The form factor of a PSU refers to its physical size, shape, and mounting specifications. As you can imagine, the form factor of a PSU affects its compatibility with the computer case and motherboard, and its impact on the system’s performance, reliability, and expandability.
When building or upgrading a computer system, it’s essential to choose a PSU with the correct form factor that is compatible with the computer case and motherboard. If the PSU is too large or small, it may not properly fit in the computer case or may not be able to mount correctly inside the, leading to potential damage to the PSU or other components. Choosing a PSU with the correct form factor also ensures that the PSU’s connectors and cables are in the right place and can reach the components in the system.
850 Watts PSU FAQs
Ans: Yes, in fact, an 850 Watts PSU is probably the best PSU option in terms of power supply rating for an RTX 3080 graphics card. Apart from the official TDP rating of the GPU which is 350 Watts, you should also factor in about a 100 Watts increase in the GPUs power supply requirements in case you are going to overclock your GPU. Apart from that, you will surely pair the GPU with a similarly high-end CPU and RAM, further increasing the power requirements of the system. Therefore, an 850 Watts PSU is the best option for an RTX 3080 GPU.
Ans: When it comes to brand choices, you have a lot of options for a PSU, even if you are looking for a particularly high-end PSU such as an 850 Watts PSU. You can go with some reliable brands on the market that have already sold hundreds of thousands of PSUs already such as Corsair, EVGA, Asus, and Thermaltake, or some new arrivals on the market such as Segotop or Aresgame. But instead of just relying on the brand of the PSU, you should simply check the efficiency of a PSU along with its rating to know which option is best suited for you.
Ans: To put it simply, yes. An 850 Watts PSU should be good enough for overclocking without any loss of performance caused by an inefficient power supply. Even the best GPUs on the market right now have a TDP of about 450 Watts. So, there is a lot of room available in terms of power supply on an 850 Watts PSU to offer reliable performance on an overclocked GPU. The same goes for the RAM as well as the CPU of your system which should work fine if you overclock them after installing an 850 Watts PSU. However, you should still start low and gradually increase the clock speeds until you hit the right spot of performance and efficiency instead of just sliding to the max level on the overclocking software.
Conclusion
As the PSU is one of the core elements of your computer, picking the right power supply for your system is a very important task and should not be taken lightly. To put it in perspective, choosing the right PSU is even more important than choosing the right CPU or GPU. While the choice of your CPU or GPU will affect the performance of the system, the choice of the PSU will affect the performance of all individual components of your PC build as well as the safety of your build considering the amount of power it deals with. Therefore, it is crucial to only go with a safe and reliable option for a PSU, especially if you are going for a high-end option such as an 850 Watts PSU. To help you with that, we have brought you the best options for an 850 Watts PSU right here. In today’s list, you will find detailed specifications of all 850 Watts PSUs along with a helpful buying guide that will surely help you to decide which option is perfect for you. In the end, we also have some handpicked recommendations lined up for you, so make sure you glance at it before you choose a PSU.
- As the power supply capacity of a PSU increases, the overall budget of the PSU also goes up. So, it is quite difficult to find an 850 Watts PSU as cheap as the ARESGAME PSU. This is the cheapest option available on our picks today, and it still features a gold certification along with 80 Plus efficiency. It also comes with a 140 mm fan built-in on the unit which offers silent but efficient cooling to the PSU. The PSU also features heavy-duty protectors such as OVP/UVP/OPP which further increase the safety rating of the device.
- On the other hand, if you are worried about the safety of your expensive CPU and GPU, you should only trust reliable PSU choices to pair with your system such as the ASUS ROG Thor PSU. This is one of the few platinum-rated power supplies available for an 850 Watts PSU right now which offers a lot of benefits apart from reliability. This particular option features an OLED panel that shows the current power consumption to allow real-time monitoring of your components. And with the P5X wing-blade fans, you get 0dB extremely silent cooling performance from the PSU.
- The SilverStone PSU is also a platinum-rated PSU available on our picks today which is significantly cheaper than other similar choices. It ensures the same 850 Watts output with 80 PLus platinum certification. Plus, you also get a 100% modular design on the PSU which makes it fully compatible with ATX12V v2.4 supported motherboards. This PSU comes with a 120 mm fan with an intelligent semi-fanless operation which keeps the PSU temperatures below 40℃ at all times.
