ASRock PRO-650B Power Supply - 650W 80 Plus Bronze Certified, ATX 3.1 Ready, 120mm Fan, Full Protection Circuit, 3-Year Warranty
Want the best price and purchase timing?
Our AI advisor analyzes real-time pricing across all channels to find you the best deal.
AI Verdict
This 650W 80 PLUS Bronze ATX 3.1 power supply with a 3-year warranty is for budget PC builds running mid-range CPUs and GPUs that don't need a PCIe 5.1 connector.
This 650W 80 Plus Bronze PSU is a situational fit because its ATX 3.1 compliance and 200% power excursion capability make it relevant for modern mid-range builds, but the absence of a PCIe 5.1 connector and a shorter 3-year warranty limit its appeal for higher-end or future-proof systems.
If you need more power, a longer warranty, or native PCIe 5.1 support, look for PSUs with 80 PLUS Gold or Platinum certification and a 7-10 year warranty.
Regret Score™
Medium RiskLower is better — measures purchase-regret risk from real buyer complaints, review credibility, and product maturity
Issues discovered after purchase
Critically weak dimension
Amazon rating vs actual quality
Chance this product isn't for you
Pros
- Meets ATX 3.1 standards, handling 200% power excursions for modern components.
- Delivers a stable 54.1A on the +12V rail, suitable for many current CPUs and graphics cards.
- Includes comprehensive protection circuits like OCP, OVP, UVP, OPP, OTP, and SCP for system safety.
- Built with all-Taiwanese capacitors, suggesting a focus on component quality.
- Features a 120mm fan designed for low noise levels during operation.
- Comes with flat cables, which can simplify routing inside a PC case.
Cons
- Lacks a dedicated PCIe 5.1 (12+4pin) connector, requiring adapters for newer, high-power GPUs.
- The 3-year warranty is shorter than the 10-year warranties offered by many reputable PSU manufacturers.
- Categorized as Tier C on some PSU tier lists, indicating it's not for high-end or overclocked systems.
- Only includes two PCIe (6+2pin) connectors, which might limit options for some dual-GPU or power-hungry single-GPU setups.
Dimension Scores
The 80 PLUS Bronze certification and 54.1A on the +12V rail provide standard efficiency and sufficient power for mid-range systems.
It features a 120mm fan designed for low noise levels, which is standard for this category.
The use of all-Taiwanese capacitors suggests a focus on component quality, which is above average for a budget unit.
The flat cable type is helpful for routing, but the PSU is likely non-modular, which limits true cable management flexibility.
Best For
- Budget-conscious PC builders assembling mid-range systems.
- Systems with CPUs like a Ryzen 5 7600x and GPUs up to an RTX 5060.
- Users prioritizing ATX 3.1 compatibility without needing a native PCIe 5.1 connector.
Not Recommended For
- High-end gaming PCs with GPUs like an RTX 5070ti or above.
- Enthusiast builds requiring modular cabling for cleaner aesthetics and easier management.
- Users seeking a long-term warranty of 7-10 years.
Watch Out For
- No native PCIe 5.1 connector, so you'll need an adapter for GPUs that use the 12VHPWR standard.
- The 3-year warranty is on the shorter side compared to the 10-year warranties common with other brands.
- Only two PCIe (6+2pin) connectors are included, which could be a limitation for certain graphics card configurations.
- Rated as Tier C on PSU tier lists, suggesting it's not designed for sustained high-load scenarios with top-tier components.
Full Specifications
| ASIN | B0FST7VT5D |
| Brand | ASRock |
| Wattage | 650 watts |
| Model Name | PRO-650B |
| Form Factor | ATX |
| Item Weight | 4 pounds |
| Manufacturer | ASRock |
| Connector Type | ATX, SATA |
| Cooling Method | Air |
| Output Wattage | 650 Watts |
| Item model number | 90-UXR065-BNUAA2 |
| Compatible Devices | Personal Computer |
| Product Dimensions | 5.51 x 5.91 x 3.39 inches |
| Power Supply Design | Non-Modular |
| Item dimensions L x W x H | 5.51 x 5.91 x 3.39 inches |
What Buyers Say
User feedback is pretty sparse for this one, but the few comments out there suggest it's a functional, budget-friendly option. People on Reddit noted it's a Tier C PSU, meaning it's fine for mid-range builds but don't push it with high-power GPUs. One user mentioned it was a compelling buy due to its price after vouchers. The Best Buy review highlighted ease of installation and quality, but that's just one person.
“Look, it was cheap and I needed a PSU that wouldn't blow up my Ryzen 5 and RTX 5060, and this one seems to be doing the trick so far, no weird noises or anything.”
Common Praise
- It's cheap and gets the job done for its intended purpose.
- Easy to install.
- Considered a quality product by at least one user.
Common Complaints
- Not suitable for higher-power GPUs like the RTX 5070ti and above.
- The 3-year warranty is shorter than many competitors.
- Lack of a native PCIe 5.1 connector means extra adapters for some modern cards.
Ownership Tips
- The flat cables, while not modular, do make routing a bit less of a headache than round, stiff cables.
- The fan is quiet enough that it doesn't stand out over other system components during normal use.
- It handles the power spikes from a mid-range GPU without issues, thanks to that ATX 3.1 spec.
Frequently Asked Questions
Does this power supply have a PCIe 5.1 connector for new graphics cards?
No, this power supply does not include a native PCIe 5.1 (12+4pin) connector. It comes with two traditional PCIe (6+2pin) connectors.
Is this power supply suitable for a gaming PC?
It's suitable for budget to mid-range gaming PCs, for example, with a Ryzen 5 7600x and an RTX 5060. It's not recommended for higher-power GPUs like an RTX 5070ti or above.
What kind of warranty does this PSU have?
The ASRock PRO-650B comes with a 3-year warranty.
Are the cables modular?
The product specifications indicate that the cables are flat, but it is not specified as modular or semi-modular. Based on the budget price band, it is likely non-modular.
What protections does this power supply offer?
It includes a full suite of protections: Over Current Protection (OCP), Over Voltage Protection (OVP), Under Voltage Protection (UVP), Over Power Protection (OPP), Over Temperature Protection (OTP), and Short Circuit Protection (SCP).
Buying Guide
When you're looking at a power supply, you need to match its wattage to your PC's components; too little, and your system won't run, too much, and you're wasting money. The 80 PLUS rating tells you how efficiently it converts wall power to PC power, with Bronze being a basic level of efficiency. ATX 3.1 compatibility means it can handle the quick power demands of newer graphics cards, which is a big deal for stability. Finally, check the connectors to make sure it has what your specific GPU needs.
Wattage (650W)
This is the total power your PSU can deliver. Think of it like the horsepower of a car; you need enough to get where you're going, but too much is just extra cost and fuel. 650W is enough for most mid-range gaming PCs.
80 PLUS Bronze
This certification indicates the power supply is at least 82% efficient at 20% load, 85% at 50% load, and 82% at 100% load. It's like getting decent gas mileage on your car; it saves you a little on your electricity bill compared to uncertified units.
ATX 3.1 Compatible
This is a newer standard that allows the PSU to handle sudden, very high power draws (called power excursions) from modern GPUs. Without it, your system could experience instability or crashes when your graphics card demands a lot of power instantly. It's like having a car engine that can handle sudden bursts of acceleration without sputtering.
Full Protection Circuit (OCP, OVP, UVP, OPP, OTP, SCP)
These are safety features that protect your expensive PC components from electrical issues like too much current, too high voltage, too low voltage, too much total power, overheating, or short circuits. It's like having airbags and anti-lock brakes in your car – you hope you never need them, but they're crucial for safety.
Alternatives
If this PSU doesn't fit, look for power supplies with a higher 80 PLUS rating (Gold or Platinum), a longer warranty (7-10 years), and native PCIe 5.1 (12VHPWR) connectors for future-proofing with high-end GPUs.
You Might Also Like
Micro ATX PC Case | Mini Tower Computer case | Pre-Installed 120mm*1 RGB Fan | ITX Desktop Chassis for MATX/ITX | 240 RAD | 280mm GPU | 160mm CPU Cooler Height - White S6
$0-$49This MAQUY S6 is a budget Micro ATX case with a pre-installed 120mm RGB fan, supporting 280mm GPUs and 240mm top radiators for entry-level builds.
Micro ATX Case, Mini PC ITX Desktop Computer Case MATX Case Support ATX PSU/250mm GPU/135mm CPU Cooler/1x 3.5’’HDD or 2X 2.5’’SSD/USB 3.0 Port
$0-$49This is a compact 38.5x19.5x32.5cm Micro ATX case supporting 250mm GPUs and 135mm CPU coolers, designed for budget workstation builds.
Small PC Case, ITX Mini Computer Case with 360 Degree Ventilation, 10.5L Compact Design for ITX Motherboard, SFX Power Supply, 4 x 2.5 Inch SSDs
$50-$99This 10.5L acrylic ITX case supports SFX/SFX-L PSUs, ITX motherboards, and GPUs up to 210mm, designed for compact builds.
Micro ATX PC Case | Mini Tower Computer case Support Vertical GPU Mount | Pre-Installed 120mm*1 RGB Fan | ITX Desktop Chassis for MATX/ITX | 240 RAD | 320mm GPU | 165mm CPU Cooler Height-Black
$0-$49A budget Micro ATX case with a mesh front, tempered glass, and support for 320mm GPUs and 240mm AIOs, but only one pre-installed 120mm RGB fan.