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Gamemax’s Best Yet!
Review Summary
The Gamemax GX Rampage 1050W Platinum PSU is a solid contender in the high-performance power supply market, boasting the latest ATX 3.X and PCIe 5.X specifications to handle today’s demanding CPUs and GPUs. While Gamemax has had a mixed reputation in the past, this unit impresses with excellent voltage regulation, low ripple, and efficient cooling thanks to surface-mounted components and a quiet 135mm Fluid Dynamic Bearing fan. It even held up under stress tests, delivering stable performance when pushed beyond its rated capacity. Though there’s room for improvement in efficiency tuning, especially compared to some Gold-rated competitors, the GX Rampage is a well-built, reliable option for power-hungry setups.
Hours Tested: 9
Overall
-
Performance - 9.3/10
9.3/10
-
Build Quality - 9.4/10
9.4/10
-
Efficiency - 9.3/10
9.3/10
-
Value - 9/10
9/10
Pros
- Platinum Efficiency
- Quieter Operation
- Good overall performance
Cons
- No Hybrid Fan mode
- Gamemax needs more time to maintain its reliability and reputation for its PSUs
Power Supplies were no fun back in the day, and with the pace at which the rest of the PC components & peripherals were getting all the modern updates and features, we hardly saw any brand wanting to show their cool tech ideas for power supplies specifically. This is one of the reasons we still have very few brands, especially OEMs, in the PSU business.
Knock knock! “Who’s there?”
PSU, “PSU who?”
PSU with the latest ATX 3.X specifications along with 12VHPWR connector.
“Hey! Come on in. We have been waiting for you for so long”
New ATX 3.X specifications proved to be a kind of special milkshake that finally started to bring all the PSU boys (brands & OEMs) to the yard! I know this is more of a silly joke, but believe me, I have not seen this much activity, energy, and willingness in brands and even the brands/OEMs we had not heard of before; all of a sudden every one of them dialed in their R&D to 11 and have started manufacturing 80 Plus Platinum rated PSUs!
Gamemax has long been in the ATX PSU business, and if I have to be honest, it really didn’t get that much traction because of its mediocre PSUs. But for the past couple of years, Gamemax has been pumping out some decent PSUs with 80 Plus Gold certifications.
This time around, Gamemax wants to show its real capabilities with even more challenging specifications set out by Intel for today’s insanely high power-demanding CPUs & GPUs combined, which demand upto 2x the rated power from the PSU! For that, Gamemax has launched two PSU lineups: Gamemax RGB-Smart and Gamemax GX Rampage, both of which are the latest ATX 3.X (3.0 & 3.1) and PCIe 5.X (5.0 & 5.1) compliant PSUs.
Key Takeaways
- The Gamemax GX Rampage 1050W Platinum PSU delivers reliable power and efficiency, with quiet cooling and strong performance under load.
- You should buy the GX Rampage 1050W if your main priority is top-notch efficiency without a high noise output.
- The only reason to skip the GX Rampage 1050W Platinum is if you want a hybrid-fan mode.
Here are the specifications:
| Specification | Detail |
|---|---|
| 80 PLUS Efficiency | Platinum |
| Modular | Fully |
| Total Power | 1050W |
| Input Voltage | 100-240V |
| Input Frequency | 50-60Hz |
| Fan Size | 135mm |
| Protection | OPP, OVP, OPP, OTP, SCP, UVP |
| Dimension (D x W x H) | 160 x 150 x 86 mm |
Packaging & Unboxing
I love the packaging. The green-black theme is one of my favorites, and it definitely adds a touch of aggression. There is no PSU picture at the box and very minimal branding, unlike some other manufacturers that paste a logo for every little feature at the front.
The back of the box has all the details about the PSU, including its power specs, dimensions, connector info, and more.
Opening the box, you’re greeted with a user manual. The PSU comes in protective foam, while the cables have their own pouch. So far, Gamemax is on point with the packaging.
Design
The PSU has a black-on-black theme with big grills for good airflow. It is pretty decent, and nothing to complain about. The power connector side is also standard.
The PSU side has more vents for improved airflow. This is something we don’t see very often. Of course, the PSU is fully modular, so you only have the plug in the key cables for improved cable management.
Cable & Connectors
Good job Gamemax! They have included gloves and a screwdriver, which is a nice touch. As for the cables, they are of an adequate length and shouldn’t cause an issue in a typical ATX build.
| Connector | Quantity |
|---|---|
| Mainboard (24(20+4)Pin) | 1x |
| CPU (8(4+4)Pin) | 2 |
| PCI-E (8(6+2)Pin) | 4x |
| 12V-2×6 (16(12+4)Pin) | 1x |
| SATA (5Pin) | 10x |
| Peripheral (4Pin) | 3x |
| FDD (4Pin) | 1x |
Gamemax GX Rampage 1050W Platinum, being an ATX 3.1 & PCIe 5.1 compliant PSU, correctly uses a 12V-2X6 GPU power connector, which is an updated version of the 12VHPWR connector.
Teardown & Component Analysis
Unlike almost any other brand that is acquiring existing or well-known OEM platforms for their PSUs these days, Gamemax went quite bold, or I should say Gamemax’s parent company, Guangdong Sohoo Technology, maxed up their game this time and put their R&D to literally design and develop an in-house PSU platform to be used for their PSUs. I say it’s a bold move because it’s already very challenging for a new OEM to master a PSU platform, let alone with massive power spikes allowed per the new ATX requirements.
Sadly, HWBusters, guys behind Cybenetics (and whom I am hugely inspired), had recently tested Gamemax’s RGB-Smart PSU, which, though performed decently well, had its fair share of quirks. But It must be noted that the PSU I have today for the review, though seems to be from the same OEM and similar-looking platform, does have minor changes on its PCB (because it’s from the GX series and not from RGB-Smart), which kind of gives me hope that it just may survive and perform pretty good in our tests.
The platform looks very neat and has all of its components mounted/soldered on the front side of the PCB. The layout and intensive use of SMD components make this platform spacious and this will very easily benefit from having better airflow and keeping everything cooler inside.
If you have been reading/watching PSU reviews then you must have seen casual aluminium heatsinks for major components standing tall with their fins spreading out in an effort to catch more air and cool down the components attached to it. Well, according to Gamemax, “We don’t do it here” as they are using SMD power components, that are surface mount devices soldered directly onto the PCB.
From the APFC MOSFETs and its Boost Diode to the Half-Bridge LLC MOSFETs (except for the two Bridge Rectifiers), all are soldered on the PCB and are surrounded by small heatsinks because SMD components also dump their heat onto the PCB’s copper planes.
Having SMD MOSFETs may reduce slight EMI and ripple noise and also have slightly better voltage regulation (if done correctly, of course), all of which we will see in our upcoming tests. It is important to note that this design still utilizes Active PFC topology on its primary side, which is surprising to see in an 80-plus platinum-rated PSU. Only a handful of PSUs I have tested managed to achieve a Platinum rating with this older topology, which is found vastly in Gold-rated PSUs.
Primary transformer which is responsible for converting high voltage signal from the primary side to lower voltage rail i.e 12V which further gets chopped off into minor 5V & 3.3V via a DC-DC converter, has a rather small design for a 1050W rated PSU.
There’s a vertically mounted PCB for 12V rail MOSFETs surrounded by two large metal tabs acting as heatsinks.
Gamemax to my surprise has used a high quality Japanese Electrolytic bulk capacitor on its primary side by Nichicon. I think this is the first time that I have seen a whopping 1000uF electrolytic bulk capacitor in a PSU, whereas in every PSU they use two capacitors having less capacitance value in parallel to double the final capacitance value and this also greatly reduces capacitor’s ESR (Equivalent Series Resistance).
The rest of the electrolytic as well as polymer capacitors are from a low-tier brand, Teapo, which isn’t bad compared to the ones that are being used by many brands these days in an effort to cut down the cost. There are only a handful of electrolytic capacitors and the majority of them are polymers. Polymer capacitors tend to have much better quality and lifespan as they have a much better temperature endurance than electrolytic ones, so there shouldn’t be any issues for this PSU to easily surpass its warranty period, which is 10 years!
I do think that Gamemax should change their marketing material where they talk about capacitors as “Main Japanese 105C Capacitors and Solid Capacitors”. This kind of misguides readers into thinking that Solid Capacitors (Polymer capacitors) are also from a Japanese manufacturer which isn’t the case here.
There’s a 135mm fan which appears to be (but not sure) a Fluid Dynamic Bearing fan from a brand I couldn’t find any info online. The fan had an outer circular ring which is the first time I have seen it in a PSU.
PSU Load Testing
Voltage Regulation
| Load in % | 12V Rail | 5V | 3.3V |
|---|---|---|---|
| 20% | 12.07V | 5.08V | 3.36V |
| 50% | 12.02V | 5.07V | 3.35V |
| 70% | 11.98V | 5.07V | 3.35V |
| 90% | 11.94V | 5.07V | 3.35V |
| 100% | 11.94V | 5.07V | 3.35V |
Voltage regulation is good, and the PSU had no trouble keeping up with the maximum load. Having fewer capacitors inside didn’t have any effect on this test, which is really impressive.
PSU Efficiency
| Load in % | Efficiency | Power Factor |
|---|---|---|
| 20% | 90.32% | 0.952 |
| 50% | 93.28% | 0.988 |
| 70% | 93.33% | 0.992 |
| 90% | 92.73% | 0.991 |
| 100% | 92.10% | 0.991 |
Though Gamemax GX Rampage 1050W easily reaches the Platinum level of efficiency, I have seen even Gold-rated PSUs achieving similar or even better results these days, so maybe there is a slight bit of tuning needed to be done for its efficiency.
Voltage Ripple Performance
| Load in % | 12V Ripple |
|---|---|
| 20% | 4.8mV |
| 50% | 6.4mV |
| 70% | 8.0mV |
| 90% | 16.0mV |
| 100% | 18.0mV |
Similar to voltage regulation, having fewer filtering capacitors may cause significantly poor results in this test, but thankfully, Gamemax didn’t cut down on the use of polymer capacitors, which is considered an essential component for better voltage ripple performance.
I was really surprised to see sub 10mV results at even 70% of the load and only at 100%, which I saw 18mV, which is still very good. I even pushed this PSU to 1450W, which is 138.1% of its rated power, where it just tripped its OPP, and still, the voltage ripple was kept to a much lower value of less than 25mV. A very impressive job indeed!
Temperatures
Thanks to its unique fan design and surface mount power components on the front of the PCB, the PSU ran very cool throughout different load variations. Also, the 135mm Fluid Dynamic Bearing fan was very quiet, only at max load it started to become slightly audible. Gamemax could have easily implemented a hybrid fan mode, considering the high efficiency and cooler operation of GX Rampage 1050W.
Should You Buy it?
Buy It If
✅ Quiet & Efficient: You want an efficient and quiet PSU that’s going to be easy on both your ears and power bills.
Don’t Buy It If
❌ Stranger danger: Though Gamemax GX Rampage 1050W performed exceptionally well in our tests, gamemax is still a brand that is not well-trusted in the PSU business, and I believe it does require some time to establish itself as a strong contender.
My Final Thoughts
Gamemax has spread its wings with the help of its parent company, Guangdong Sohoo Technology, which came out to be quite a capable OEM for the PSU. This OEM has potential to partner with other major brands and only in doing so can Gamemax gain the trust as well as market share for its PSUs. I am really surprised seeing the performance of Gamemax GX Rampage 1050W Platinum and I wish them the best!
The Gamemax GX Rampage 1050W Platinum PSU is a big improvement for the brand, showing they’ve stepped up their game from earlier models. With its ATX 3.1 and PCIe 5.1 compatibility, it’s built to handle the hefty power demands of the latest CPUs and GPUs. The fully modular design, neat internal layout, and the use of quality components like the Nichicon capacitor highlight Gamemax’s focus on reliability. Plus, the PSU’s solid voltage regulation and low ripple performance under load make it a strong contender for high-performance builds.
That said, there are a few areas where it could be better. The lack of a hybrid fan mode feels like a missed opportunity, especially given how efficient and cool the PSU runs. Also, while it meets Platinum efficiency standards, some Gold-rated PSUs are hitting similar numbers, so there’s room for a bit more optimization. Overall, the Gamemax GX Rampage 1050W Platinum is a reliable and well-rounded option for power-hungry systems, and I am very exited to see what Gamemax comes up with next.
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Arsalan Shakil (aka GuyThatDoesEverything on YouTube) is a PC Tech Enthusiast and Electronic Geek. With over 10+ years of experience in Electronics, he then decided to explore Software Engineering to design embedded products and automate existing hardware solutions.
When he started tearing down old cameras to understand how they worked, he was shocked (literally, when he got zapped by a flash discharge capacitor), giving him the power (debatable) to fall in love with videography/photography. He also started making some fun videos that later became YouTube tech reviews.
Skills:
- 10+ years of experience in Electronics design, embedded solutions, and prototyping
- Majored in Software Engineering
- Research paper publication in IEEE for Embedded Military Uniform & LoRa WAN wireless technology
- Specialized in IoT Solutions
- PC Enthusiast & PC Modder
In his local region, he’s known to expose cheap PSU brands, often claiming fake certification or false claims on the box. He’s a true nerd and needed some friends in his life. Then he met some guys who work at Tech4Gamers, and they also came out to be equal nerds who suggested he join Tech4Gamers as a Hardware Expert.
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