GameMax 850W Rampage Power Supply (No Power Cable inc.), Full-Modular, APFC, Japanese Tk Main Capacitor, 80 Plus Bronze, 88% Efficiency, 14cm Cooling Fan, Real Power Gaming | Black

I initially returned this GameMax 850W Rampage Power Supply thinking it was the cause of my PC issue, but after further troubleshooting, I realized the problem was actually with my graphics card—not the PSU. In hindsight, this PSU was actually amazing, and I regret returning it. Why It’s a Great PSU ✔ Reliable Power Delivery – Handles demanding setups smoothly with real 850W power. ✔ Fully Modular Design – Makes cable management much easier. ✔ Japanese Capacitors – Ensures longevity and stability. ✔ Good Efficiency (80 Plus Bronze, 88%) – Performs efficiently for a mid-tier PSU. ✔ Quiet 14cm Cooling Fan – Keeps noise levels low even under load. Why It’s Underrated This PSU doesn’t get enough credit—it performs just as well as some higher-priced alternatives. I initially doubted it, but after testing, I found it to be solid, stable, and efficient. Final Verdict If you need a reliable, fully modular, and efficient 850W PSU, the GameMax Rampage is a great choice. My return was unnecessary since my issue was with my GPU, and I’d definitely recommend this PSU to anyone looking for a budget-friendly but powerful option. Rating: ⭐⭐⭐⭐⭐ (5/5) – Excellent PSU, wrongly blamed for my PC issue!

The 3rd one of these psu's i've bought and never had any problems with them, first machine was a 650w psu with a 3700x with a 5700xt and it worked spot on 2nd was a 750w psu with a 5700x and a 6700xt, and again absolutely spot on psu Just upgraded to a 7700x with a 9070xt and this 850w psu and everything runs absolutely perfectly, nice and quiet, plenty of cables in the modular setup, although as advertised, no power cable (plug) Can't fault these psu's so far as they've all been excellent and done the job for what they've been needed for

Well, it works out of the box. As expected. It's 60 pounds for a fully modular PSU, so one would expect quality to be cut somewhere. I think it's the cables. A more expensive brand would have some sort of sleeving to make it look nicer. Not this one. It's a big discount over the premium brands, but it's very good price for what it is. I bought it for a budget rebuild. I won't buy it for my main PC when I'm due an upgrade.

Very good , Quiet Product, will fit 99% of ATX Mother boards, Enough Cables to connect everything, This PSU was my second purchase, It works so well in My PC, When my Son's ATX Tower popped (Due to underpowered PSU), We thought the system was a gonner, But nope replaced the PSU, His PC runs well again His graphics card is running 100% much better, plenty of power for his gaming needs with lots of power for any upgrades easily. The only fault us the cables are stiff and hard to hide, But Defo quality cable not flimsy like some

Never worked from day 1. Binned !

Good power, Good price, Really quiet!! (Silent when not under load, and still resonably quiet when gaming) Good amount of leads and connectors, more than you will ever need. Enough to power 2x cpu and 2x gpu (if only 6 pins each). Multiple molex and sata connectors too. Save mess and only connect the ones you need. I would recommend fully!

I was very sceptical about buying this PSU, but after testing it in different scenarios can say, it it is a great PSU. Of course there is a lack of 600w cable, but I didn't need one in my PC build. Fantastic PSU for the price.

I like the grate value of this modular PSU with an all peripheral connecting leads supplied. Was delivered on time with no delays, nicely package. Installed and fully functional. My 3090 no longer randomly cause my machine to shut down when playing certain games or applications requiring the GPU to work hard. I almost decommissioned the GPU because of this issue. It’s like working on a different computer now. Happy with the purchase but would have preferred an EVGA UNIT. But waiting time of nine months seems obscene as well as the cost of the limited available EVGA PSUs on Amazon and EBay.