Shopping Cart

Your cart is empty.

Your cart is empty.

GAMEMAX GS Series SFX Power Supply 650W, Full Modular, 80 Plus Gold PSU (GS-650G BK)

Free shipping on orders over $29.99

$64.99

$ 28 .99 $28.99

In Stock

About this item

  • 80 Plus Gold Certified with APFC+LLC+DC-DC design, 90% efficiency or higher under typical loads.
  • Main Japanese 105'C capacitors and solid capacitors, aiming for unwavering product quality and performance stability.
  • ATX 3.0 & PCIe 5.0 Ready. Comes with a 12VHPWR 16pin connector to provide up to 600W for power hungry Graphics card.
  • Ultra Quiet FDB Fan provides high performance heat dissipation.
  • Robust Protection Trust in heavy-duty protection against over-voltage (OVP), under-voltage (UVP), over-power (OPP), short-circuit (SCP), over-current (OCP), and over-temperature (OTP) issues for worry-free operation.



T. US
Reviewed in the United States on March 8, 2025
I was a bit wary of the quality given reviews across the Internet for older GameMax products, but so far it has worked great. At half the cost of a major maker, this is a great deal if it keeps working. My motherboard monitoring hasn't shown any spikes across all three voltages in a few weeks, and operation has been quiet.This includes short cables for sff builds. I think bottom-mounted PSU setups might struggle to get the CPU 8-pin connector to reach. I have two complaints about the GPU cables. First, they only include one 1:1 6+2-pin and one 1:2 6+2-pin. I would prefer two or three 1:1 cables to avoid the bad appearance of a dangling cable end, and because technically 1:2 is not in spec for the PCI cable's rated maximum voltage unless it's two parallel cables routed together in one sleeve (it's not here). Second, there is a port for 12vHPWR, but no cable included. I assume this is because it's cheaper for them to use the same power panel output as the higher voltage variants in manufacturing, as anything that needs the new connector will run a 650W power supply on the ragged edge of rated capacity. I'd prefer they just didn't offer the ATX 3.0 on this model, or included the cable, none of the in between weirdness.
Crazy Jeep Guy
Reviewed in the United States on March 3, 2025
Comes with 1x3 port molex cable and 1x4 port SATA cable. Power supply has a port for 1 more of these cables but I can't find anywhere to buy it. If you need more than supplied you might have to look elsewhere. FYI cables from other manufacturers are not interchangable.
Neru
Reviewed in the United States on March 29, 2025
The media could not be loaded.
Luis Abanto
Reviewed in the United States on March 10, 2025
Great PSU for the money, I had bought a different brand for twice the money for the virtual same result. Super quiet under load and it looks great on my all white PC.
Dylan Loumeau
Reviewed in the United States on February 27, 2025
Absolutely amazing value, super happy with my purchase, works great as my test bench power supply, wish it would have said something about not including a cable for the 3.0 cable tho
_/-AG-\_
Reviewed in the United States on January 7, 2025
Nice psu but the 24 pin is too short. I have a Marx case and the cable was off by 6 inches. I believe it’s meant for itx cases but could be short depending on the position of the 24 pin. I suggest the cable be extended or an extension be included.
dm08
Reviewed in the United States on January 7, 2025
This power supply is top-notch! The cables are super flexible, and it’s a great choice for anyone who needs a reliable and efficient power source.
Gruffle
Reviewed in the United States on January 17, 2025
The product description on the Gamemax web site states that this PSU includes an ATX-to-SFX adapter. There was no such adapter in the product I received. CAVEAT EMPTOR!Follow up: I had an exchange of emails with Gamemax customer service about the missing adapter. At first they just blew me off. After I insisted that their product description included the adapter, they said they will fix the description. Well, they should give me the adapter as described!