Quick answer: For most people in 2026, the best psus under $150 is the CORSAIR RM850x ATX 3.1 (850W) — our #1 rated choice. See the full ranked comparison, alternatives and buying advice below.
Top Psus Under 150 Picks for 2026
Here are our current top psus under 150 picks, compared on real Amazon owner reviews, price, and features. Live prices update below.
Under $150 is the sweet spot of the power supply market. It is enough to buy a genuinely good unit — efficient, quiet, modular, and properly certified — without paying flagship money, and it covers the wattage most gaming builds actually need. The PSU is the one component you should never cheap out on: it feeds clean, stable power to everything else, and a poor one can take expensive parts down with it. This guide rounds up the best power supplies you can buy for under $150 in 2026, spanning a wide range of wattages so you can match the supply to your build rather than overpaying for headroom you will never use.
Our picks were chosen on what matters for a dependable supply: efficiency (the 80+ rating), build quality and warranty, modularity for clean cable management, modern standards like ATX 3.0 where present, and value. Importantly, wattage varies a lot across this list — from a 500W budget unit to several 850W models and even a 1050W option, all of which currently sit under $150 — so we flag the actual wattage of each pick clearly, because the right number depends entirely on your components. Prices run from around $40 to around $110. Below is an at-a-glance comparison, then a closer look at each and a buyer’s guide built around wattage, efficiency and modularity.
Best PSUs under $150 at a Glance
| Power Supply | Best For | Standout Spec | Approx Price |
|---|---|---|---|
| CORSAIR RM850x ATX 3.1 (850W) | Best overall under $150 | 850W, fully modular, ATX 3.1, PCIe 5.1 | around $110 |
| MSI MAG A850GL PCIE5 (850W) | High-end gaming value | 850W, 80+ Gold, fully modular, PCIe 5 | around $108 |
| GAMEMAX 1050W ATX 3.0 (1050W) | Maximum wattage headroom | 1050W, 80+ Gold, ATX 3.0, PCIe 5.0 | around $110 |
| MSI MAG A750GL PCIE5 (750W) | Mainstream high-end builds | 750W, 80+ Gold, compact, fully modular | around $87 |
| ARESGAME AGT Series (850W) | Budget 850W modular | 850W, 80+ Gold, fully modular | around $75 |
| Thermaltake Smart 500W (500W) | Entry / budget builds | 500W, 80+ White, 120mm fan | around $40 |
1. CORSAIR RM850x ATX 3.1 PCIe 5.1 Fully Modular 850W Power Supply
CORSAIR RM850x ATX 3.1 PCIe 5.1 Ready Fully Modular 850W Power Supply – Low-Noise, Cybenetics Gold Efficiency, Native 12V-2x6 Connector – Black
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The CORSAIR RM850x is our best-overall pick under $150 and a standout because it brings genuinely high-end features in just under budget. It is a fully modular 850W supply built to the modern ATX 3.1 standard with PCIe 5.1 readiness, low-noise operation, and Corsair’s well-earned reputation for quality and long warranties. At around $110 it is a lot of premium PSU for the money.
850W is an ideal headline figure for the bulk of high-end single-GPU gaming builds, comfortably feeding a powerful CPU and a demanding graphics card with room to spare. The ATX 3.1 / PCIe 5.1 design means native compatibility with current-generation GPU power connectors, the fully modular cabling keeps a case tidy and airflow clean, and the low-noise fan profile keeps things quiet under load. If you want the best balance of quality, features and capacity without crossing $150, the RM850x is the one to beat.
Pros: 850W, fully modular, modern ATX 3.1 with PCIe 5.1, low-noise, trusted Corsair quality and warranty.
Cons: Near the top of the under-$150 budget; more capacity than entry builds need.
2. MSI MAG A850GL PCIE5, Fully Modular Compact Gaming 850W Power Supply, 80+ Gold
MSI MAG A850GL PCIE5, Fully Modular Compact Gaming 850W Power Supply, 80+ Gold, ATX 3.1 & PCIe 5.1 Ready, Native Dual-Color 12V-2x6 Cable, 10 Year Warranty
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The MSI MAG A850GL is the high-end gaming value pick. It is a fully modular 850W supply with 80+ Gold efficiency, native PCIe 5 support for current GPU connectors, and a notably compact body that fits a wide range of cases. At around $108 it competes head-on with the Corsair as a top-tier 850W choice under budget.
For a powerful gaming PC, 850W of clean, efficient Gold-rated power gives you the capacity to run a strong CPU and a high-end graphics card with sensible headroom for transient spikes. The PCIe 5 readiness means you can connect a modern GPU without adapters, the fully modular cabling makes for a clean build, and the compact form factor eases installation in tighter cases. As a feature-complete, well-priced 850W unit from a major brand, the A850GL is a very strong alternative for any high-end build.
Pros: 850W, 80+ Gold efficiency, fully modular, PCIe 5 ready, compact body for easy fitment.
Cons: Capacity is overkill for modest builds; check exact cable lengths for very large cases.
3. GAMEMAX 1050W ATX 3.0 & PCIE 5.0 Power Supply, 80+ Gold, Addressable RGB
GAMEMAX 1050W ATX 3.0 & PCIE 5.0 Power Supply, 80+ Gold Certified, Addressable RGB Sync, Fully Modular ATX Gaming Power Supply, RGB-1050
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The GAMEMAX 1050W is the maximum-headroom pick, and the highest-wattage unit here by some margin. It is a 1050W supply with 80+ Gold efficiency, built to the ATX 3.0 standard with PCIe 5.0 support, and it adds addressable RGB for builders who want some flair from the power supply. At around $110 it is remarkable value for this much capacity.
Be clear about who needs this: 1050W is far more than a typical single-GPU gaming PC requires, so this is the pick for power-hungry, high-end systems — a top-tier overclocked CPU paired with one of the most demanding graphics cards, or a build you want to future-proof for a serious GPU upgrade. The ATX 3.0 / PCIe 5.0 design handles modern connectors and transient spikes, the Gold efficiency keeps it sensible, and the RGB is a bonus. If you genuinely want a big wattage cushion under $150, the GAMEMAX delivers it.
Pros: Huge 1050W capacity, 80+ Gold, ATX 3.0 with PCIe 5.0, addressable RGB, excellent value per watt.
Cons: Far more wattage than most builds use; oversizing a PSU wastes money for typical systems.
4. MSI MAG A750GL PCIE5, Fully Modular Compact Gaming 750W Power Supply, 80+ Gold
MSI MAG A750GL PCIE5, Fully Modular Compact Gaming 750W Power Supply, 80+ Gold, ATX 3.1 & PCIe 5.1 Ready, Native Dual-Color 12V-2x6 Cable, 10 Year Warranty
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The MSI MAG A750GL is the mainstream high-end pick and the value-for-wattage champion of the list. It is a fully modular 750W supply with 80+ Gold efficiency, PCIe 5 support, and the same compact, easy-to-fit body as its 850W sibling. At around $87 it is meaningfully cheaper while still covering most powerful single-GPU builds.
750W is the right number for a great many high-end gaming PCs: it comfortably powers a strong CPU and a capable graphics card without paying for capacity you will not touch. The 80+ Gold rating keeps efficiency and heat in check, the PCIe 5 readiness means modern GPUs connect natively, and the fully modular cabling with a compact body makes for a clean, easy install. If your build does not demand 850W or more, the A750GL gives you the same quality and features for less — and that is smart spending.
Pros: 750W well-matched to most builds, 80+ Gold, fully modular, PCIe 5 ready, great price.
Cons: Less headroom for the very highest-end GPUs; 750W may limit big future upgrades.
5. ARESGAME AGT Series 850W Power Supply, 80+ Gold Certified, Fully Modular
Prime ARESGAME AGT Series 850W Power Supply, 80+ Gold Certified, Fully Modular, FDB Fan, Compact 140mm Size, 10 Year Warranty, ATX Gaming Power Supply
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The ARESGAME AGT Series 850W is the budget 850W pick, undercutting the big-brand units while still ticking the important boxes. It is a fully modular 850W supply with 80+ Gold certification and a fluid-dynamic-bearing fan for quieter, longer-lived cooling. At around $75 it is the cheapest way onto the 850W tier on this list.
This is the pick for the value-focused builder who wants 850W of Gold-rated, fully modular power without paying premium-brand prices. The 850W capacity suits a strong gaming build, the fully modular cabling keeps things tidy, and the FDB fan helps with noise and longevity. It comes from a smaller name than Corsair or MSI, so the brand cachet and warranty network are not the same, but as an affordable, well-specified 850W unit it offers a lot of capacity for the money and rounds out the high-wattage value end of the list.
Pros: 850W at the lowest price here, 80+ Gold, fully modular, fluid-dynamic-bearing fan.
Cons: Smaller brand than Corsair/MSI; verify warranty and support terms before buying.
6. Thermaltake Smart 500W 80+ White Certified PSU with 120mm Fan
Thermaltake Smart 500W 80+ White Certified PSU, Continuous Power with 120mm Ultra Quiet Cooling Fan, ATX 12V V2.3/EPS 12V Active PFC Power Supply PS-SPD-0500NPCWUS-W
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Rounding out the list is the Thermaltake Smart 500W, the entry-level pick for budget builds. It is a 500W supply with 80+ White certification and a 120mm cooling fan, designed to deliver continuous, reliable power to modest systems at a rock-bottom price. At around $40 it is by far the cheapest unit here.
Be honest about its place: 500W and 80+ White put this firmly at the entry tier, suited to budget gaming PCs with a modest graphics card, office machines, or low-power builds — not high-end systems with a power-hungry GPU. Within that scope it is a sensible, dependable choice from a known brand: the 120mm fan keeps it cool, the wattage is plenty for an efficient mainstream build, and the price leaves more of your budget for other parts. If your system’s power draw is genuinely modest, the Smart 500W does the job without fuss.
Pros: Very affordable, 500W from a known brand, 80+ White certified, 120mm fan, fine for modest builds.
Cons: Only 500W and 80+ White (non-modular); not suitable for high-end or power-hungry GPUs.
How to Choose a PSU under $150
The first decision is wattage, and it should be driven entirely by your components — not by buying the biggest number you can afford. Your graphics card and CPU dominate power draw, so add up their requirements and leave sensible headroom for spikes. For most high-end single-GPU gaming builds, 750W to 850W — as on the MSI A750GL, A850GL, Corsair RM850x and ARESGAME unit — is the sweet spot. A 1050W supply like the GAMEMAX is genuinely useful only for the most power-hungry systems, and a 500W unit like the Thermaltake suits modest builds. Match the wattage to the parts, then stop.
Efficiency comes next, expressed as the 80+ rating. A higher rating means less power wasted as heat, lower running costs and usually a quieter, cooler unit. Most of the list is 80+ Gold, which is the value sweet spot and what we would recommend for any serious gaming build. The Thermaltake’s 80+ White is fine for a budget machine but less efficient. Under $150 you can comfortably get a Gold-rated supply, so prioritise that for anything beyond an entry-level system.
Modularity and modern standards shape the build experience and future compatibility. A fully modular PSU — like the Corsair, both MSI units and the ARESGAME — lets you connect only the cables you need, which dramatically improves cable management and case airflow. The newer ATX 3.0 / 3.1 standard with PCIe 5.0 / 5.1 connectors, present on the Corsair and GAMEMAX, means native compatibility with current GPU power plugs and better handling of transient spikes. If you are building with a modern graphics card, those features are worth seeking out.
Finally, weigh brand, warranty and your real needs together. The PSU protects every other component, so build quality and a solid warranty matter — established names like Corsair and MSI bring strong track records, while value brands can deliver more watts per dollar if you are comfortable with the trade-off. Decide your wattage from your parts, insist on at least 80+ Gold for a gaming build, favour fully modular and ATX 3.x where it fits your budget, and pick the supply on this list that matches your system. A right-sized, quality PSU is one of the best investments you can make in a build’s longevity.
Frequently Asked Questions
How many watts do I actually need for a gaming PC?
It depends on your graphics card and CPU, which dominate power draw. Most high-end single-GPU gaming builds are well served by 750W to 850W, like the MSI A750GL or A850GL and the Corsair RM850x here. A 1050W unit such as the GAMEMAX is only necessary for the most power-hungry systems, and a 500W supply like the Thermaltake suits modest builds. Add up your components’ needs, leave headroom for spikes, and avoid massively oversizing.
Is 80+ Gold worth it over 80+ White or Bronze?
For a gaming build, yes. A higher 80+ rating wastes less power as heat, which means lower running costs and usually a quieter, cooler-running unit. Under $150 you can comfortably buy 80+ Gold — most of this list is Gold-rated — so we recommend it for any serious system. The Thermaltake’s 80+ White is acceptable for a budget or low-power machine where the lower price is the priority.
Do I need an ATX 3.0 power supply for a modern GPU?
It is not strictly mandatory, but it is worth seeking out. ATX 3.0 / 3.1 units with native PCIe 5.0 / 5.1 connectors — like the Corsair RM850x and GAMEMAX 1050W here — connect directly to current-generation GPU power plugs without adapters and are designed to handle transient power spikes more gracefully. If you are building with a recent high-end graphics card, an ATX 3.x supply makes for a cleaner, more future-proof setup.
Is a fully modular PSU better than non-modular?
For most builders, yes. A fully modular supply — like the Corsair, both MSI units and the ARESGAME 850W — lets you attach only the cables you actually need, which makes cable management far cleaner and improves airflow inside the case. Non-modular units like the budget Thermaltake have all cables fixed, which is fine for a simple build but harder to tidy. For a high-end or windowed case, modular is well worth it.
Related Guides
- Best Power Supplies
- Best 850W Power Supplies
- Best GPUs for Your Build
- Best PC Cases
- Best Gaming PC Builds
- Best CPU Coolers
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