Epilogue
The Chieftec VEGA M 850W is a decently performing unit that can be a good choice in the 850W category, mainly thanks to its attractive price in the European market. To the best of my knowledge, this product is not yet available in the US market, and I don’t have any information on when it will be available. The assets of this product include: good ripple suppression, increased hold-up time, high power factor readings, and the highly efficient 5VSB rail. Moreover, the protection features, OCP and OPP, are appropriately set, which is a rare phenomenon, unfortunately for the majority of the PSUs I test. Lastly, the PSU’s output noise is kept low under light and moderate loads, allowing users sensitive to noise to include it in their buying list safely.
Moving on to the negative aspects, the performance of the 12V rail in terms of load regulation and transient response needs improvement. This rail is the most important of all, so it is crucial to have the best possible performance. Moreover, efficiency at normal and light loads is not competitive compared to similar wattage and spec units. Additionally, I got high inrush and leakage current readings. Lastly, the two EPS connectors on the same cable are not a safe option, as under some extreme usage scenarios, the single connector on the PSU side could become damaged, unable to handle the high loads that these connectors can deliver.
All in all, the Chieftec VEGA M 850W is a decent-performing PSU, available at a reasonable price in the EU market.
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- Delivered full power at 47°C
- ATX v3.1 and PCIe CEM 5.1 compliant
- Protection features that are properly set
- Quiet operation under light and mid loads
- Decent build quality
- Within 1% load regulation at 5V and 3.3V
- Good ripple suppression
- Highly efficient 5VSB rail
- Increased efficiency under super light loads (2%)
- Well-performing APFC converter
- Long enough hold-up time
- Alternative Low Power Mode (ALPM) compatible
- FDB (Globe Fan) fan
- 12+4-pin PCIe connector set at 600W
- Efficiency under normal and light loads could be higher
- Loose load regulation at 12V
- Average transient response
- High leakage currents
- Increased vampire power consumption at 230V
- No fan failure protection
Hello which PSU would you recommend if you had to pick from : Chieftec VEGA M PPG-750-C, Corsair RMe Series RM750e , Cooler Master MWE Gold V2 ATX 3.1 750W. They are priced the same and I am looking for a PSU to pair with my 5070 TI…
I would get the one with the better support in the region, because performance differences are not that dramatic among these. Check for their noise output also (average noise) output.
I’m curious how worried should I be for the inrush current this model has. It is quite competitively priced where I live, and I’m inclined to get it if it is not a big deal in terms of long-term reliability or safety on the secondary side.
We changed inrush current testing methodology because there were issues with the previous one. This is most likely ok.
Thank you, Aris!
As I see, the inrush is similar on Cybenetics as well. There is also an option to have the Cougar GEX Pro (650W which is not rated at Cyben) for similar price as well. Although Chieftec’s Vega M seems more reviewed than the Cougar. Which one would you recommend?
PS – It is amazing to get guidance from professionals like you!
Just retested the Chieftec PSU for inrush current, as expected values are way lower. I cannot say about the GEX Pro 650 since I haven’t tested it or at least I don’t remember doing so, my team 🙂
Thank you for your guidance and updated information! I do not have any second thoughts about the Chieftec then! 🙂
Hi
I found one Iranian PSU “GP800A-UK EVO V3.1” https://green.ir/products/power-supply/gp800a-uk-evo-v3.1 and it’s powered by High power No-832H , similar to Chieftec VEGA’s board but it’s High power No-832D.
Is there any PSU that uses No-832H ? Is it higher tier?
This is high quality image : https://green.ir/assets/filemanager/userfiles/green/PSU/UK-EVO-V3.1-Series/Gallery/GP800A-UK-EVO-V3.1/GREEN-GP800A-UK-EVO-V3.1-PSU-G-11.jpg