Gigabyte GP-P450B 450W Power Supply Review - Can It Stand Against The Corsair CX450?

📀 Model number: Gigabyte P450B
📀 OEM: MEIC
📀 Efficiency: ETA-S (83 %), 80 PLUS BRONZE
📀 Noise: LAMBDA-S (42 dBA)
📀 Modular: No
📀 Dimensions: Compact
📀 Price: $50
📀 Warranty: 3-years
📀 Power Specifications: Single +12V rail
📀 Power Distribution: 103W on the minor rails, 432W at 12V
📀 Cables: 1x EPS, 2x PCIe, 6x SATA, 3x 4-pin Molex, 1x FDD adapter
📀 Cable Length and distance between them: Long enough cables with 120mm between all peripheral connectors
📀 In Cable caps: No
📀 Internal Design: Single-sided PCB, medium-sized heatsinks, and a bridge rectifier that isn’t bolted on a heatsink.
📀 Transient Filter: It is complete. It even has an MOV.
📀 Inrush current protection: 1.5 Ohm NTC thermistor.
📀 Primary Side: APFC and double forward topology
📀 Secondary Side: Passive Rectification & Group Regulation
📀 Soldering quality: Good enough.
📀 Build quality: Low-cost FETs are used on the primary side, and the same goes for the SBR (Schottky Barrier Diodes) on the secondary side. The +12V rail uses some SBRs that I have never encountered before.
📀 Caps: 85C Teapo LH bulk cap and unknown 105C caps on the secondary side.
📀 Rifle bearing fan by Bok
📀 Tolerance to high temperatures: It delivered 110% of its max-rated-capacity at 41C for a short period, without breaking. This doesn’t mean that the PSU will survive for long under harsh operating conditions.
📀 Thermals: With 230V input and mid load, but without active cooling, the bridge rectifier goes up to 74C. With lower than 115V input and full load, with the fan at full speed, I expect high temperatures on the bridge rectifier/
📀 Load Regulation: Decent at 12V and within 3% on the other two major rails.
📀 Ripple Suppression: Ok on all rails with 12V staying below 50mV at full load with 115V input at 40C.
📀 Transient Response: Good at 5VSB, mediocre at 12V, bad at 5V, and terrible at 3.3V
📀 Protection Features: OCP is correctly set at 12V, while it should be lower at 5V where the rail is close to the lower allowed limit. OCP at 3.3V and 5VSB is set high.
OPP is correctly set, and the bad news starts with OTP, which doesn’t seem to be present.
📀 Hold-up Time: above 17 ms
📀 Inrush Current: Low inrush currents.
📀 Leakage Current: Very low readings here, which is a good thing, of course.
📀 Overall Efficiency: Very Low.
📀 Overall PF: Avg with 115V and bottom low with 230V.
📀 Overall Noise Output: High
📀 Overall Performance: Low

Bottom Line: An affordable PSU with higher performance than the P550B, since the lower capacity helps it achieve better ripple suppression, especially at 12V, and tighter load regulation. The platform is outdated and uses low-quality parts. It has a rifle bearing fan, though, which is a nice surprise in this price range. My main problem in this unit is the lack of OTP. PSUs without OTP should be avoided. But in this price category, you cannot be extra picky. This is a fact. If you find it below, it is actually a decent choice.

Pros 👍
• Affordable
• Full power at 41 degrees Celsius
• Decent transient response at 12V
• Decent ripple suppression on all rails
• Within 3% load regulation on all major rails
• Complete transient filter
• Compact dimensions
• OCP is correctly set at 12V and 5V and properly configured Over Power Protection
• Higher than 17ms hold-up time
• Low inrush current with 115V
• Enough number of connectors

Cons 👎
• Low overall performance
• Low efficiency
• Noisy
• Lousy transient response at 5V and 3.3V
• OCP at 3.3V is not configured correctly
• Low-quality caps used all over
• Low-quality FETs and SBRs
• The cooling fan uses a rifle bearing but still, it doesn’t seem to be of good quality
• Low power ok signal hold-up time
• Short distance between peripheral connectors

00:00​ - Intro
00:11​ - PSU Styling
00:32​ - PSU Presentation
02:10​ - Cables
02:45​ - Internal Design
03:28​ - Transient Filter
03:41​ - Inrush Current Protection
04:20​ - Soldering Quality
05:14​ - Cooling Fan
05:41​ - Tolerance to High Operating Temperatures
06:22​ - IR Shots
06:59​ - Load Regulation
07:07​ - Ripple Suppression
07:30​ - Protection Features
08:29​ - Hold-Up Time
08:41​ - Inrush Current
08:52​ - Leakage Current
08:58​ - Overall Efficiency
09:11​ - Overall PF
09:29​ - Overall Noise Output
09:58​ - Overall Performance
11:20​ - Bottom Line
12:44​ - Pros
13:24​ - Cons
13:55​ - Eri's Question
21:04​ -The End

#HWbusters​ #Gigabyte​ #GP​-P450B

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[HardwareBusters]

It would be nice if you could share this video with your friends, colleagues, classmates, anyone who would be interested in watching it. This way, you help us grow our channel and bring more content to you. And please do not forget to leave a comment!

[Andrew-hecu]

Is there anyone else conducting such thorough PSU reviews? You’re the best in the business!

[pedrososa]

men it is a shame that my english level is too bad cause this is the only serious and professional review about gigabyte p450b that i have seen in youtube and i cant understand it, but you have mi like for this exelent work

[therealcharles]

I can say without a doubt that Aris is the best PSU reviewer on the freakin planet.
Excellence when it comes to PSU's reviews.

[davidcobra]

Very good review but for the love of God turn the music down. It was very hard to hear you. Anyway cheers!
EDIT: Well I got one while I'm waiting for my CX450 to get fixed but now I've got an unstable FSB. Any ideas? And no, I'm not talking power states. Cable connections are good. Maybe I hit the CPU cooler a little bit when I plugged in the 8 pin but it's an old AM3 CPU with pins. Only other idea I got is something went bad when the old power supply started squealing. Really no idea how to fix my current problem.

[trevorsmith]

Non-functional OTP and no heatsink? what could possibly go wrong?

[Intrested_in_Intresting]

Great comparison, very informative and useful, thank you !!!

[LKonstantina]

You deserve more subscribers! '.'

[calvitocalvon]

new to your channel! definately interesting keep it up

[JimCKD]

No JonnyGuru?Dont worry..We have ArisGuru(and his team, of course)! :-)))

[dev]

at last gigabyte psu ...plz do a review about aorus ap850gm.

[calvitocalvon]

would you mind testing seasonic a12 series? they are cheap down here in south america, i wonder if they are worth of the brands name

[ybruno_]

Hey, i was thinking about buying a rx 5700, do you think this psu can handle it?

[Sitharii]

these are the kind of necklaces that a PSU-reviewer should wear !!!
gold/diamond necklaces are irrelevant, lol !!!

[balvenos]

perfect review! thank to you i wont buy this bomb here in brazil xD

[OSND]

Deciding to build a Budget and Power Efficient PC, Should I buy this PSU?

AMD Athlon 3000G @ Stock (35 Watts)
240GB SSD
Asus A320m-K
x2 8GB DDR4 RAM @ 2666MHz (16GB)
Cheap Low Powered CPU Cooler

(All of these only sips power)

[HassanAhmed-qiiz]

Is xpg pylon a better choice than this?

[arsalanhussain]

Hello sir Can i use with RX 6600 AmD Graphics card

[youssefdaking]

mine died after 2 months of light usage, just league of legends, i3 10100f and 1050ti, i wont trust gigabyte again

[TheBlackTownmateXCrypton]

Its good for ryzen system whith Gtx1050 ti ?