Akasa Paxpower 500 W Power Supply Review

**Hardware Secrets Team** · 06-09-2009, 11:06 AM

There has been a new article posted.

Title: Akasa Paxpower 500 W Power Supply Review
URL: http://www.hardwaresecrets.com/article/731

Here is a snippet:
"Paxpower 500 W (also known as Powerpax 500 W or AK-P050FG7) is a mainstream power supply from Akasa, featuring active PFC and a 120-mm fan. Since this was the first product we've reviewed from this br..."

Comments on this article are welcome.

Best regards,
Hardware Secrets Team
http://www.hardwaresecrets.com

Travis · 06-09-2009, 10:03 PM

Quote:

Originally Posted by Gabe

For our math we have to consider the part with the lower current limit, 20 A in our case. Applying the above formula gives us a maximum theoretical current of 29 A or 343 W for the +12 V output.

It's limited on the freewheeling diode. In this case, 30A/(1-0.3)=42.9A. The rectifying diode conduct current in 30% of the period so at 50A output (D=0.3) the average forward current of this component is 15A, still lower than its rated capacity.

Quote:

Originally Posted by Gabe

On the other hand, we could only extract 500 W from it after we removed the second ATX12V connector from the +12V2 input from our load tester. With both connectors installed there – i.e. using the EPS12V connector – the power supply wouldn’t turn on.

I've come across the same problem with a couple of multi-rail units. The problem is, if two connectors on different rails are connected to the same load, sometimes OCP is triggered far lower than its actual trip-point. I'll study this later.

**Gabriel Torres** · 06-10-2009, 09:10 AM

Thanks Travis for your comments...

**Gabriel Torres** · 06-24-2009, 01:34 PM

The results from this review were updated today to reflect AC power and efficiency measured by our new precision power meter. Because of the new results we REMOVED the award we previously gave to this power supply and moved it to our "not recommended" category due to its low efficiency (it can only deliver above 80% efficiency if you pull between 200 W and 300 W).

06-09-2009, 11:06 AM	#1
Hardware Secrets Team Administrator Join Date: Nov 2004 Posts: 2,952	Akasa Paxpower 500 W Power Supply Review There has been a new article posted. Title: Akasa Paxpower 500 W Power Supply Review URL: http://www.hardwaresecrets.com/article/731 Here is a snippet: "Paxpower 500 W (also known as Powerpax 500 W or AK-P050FG7) is a mainstream power supply from Akasa, featuring active PFC and a 120-mm fan. Since this was the first product we've reviewed from this br..." Comments on this article are welcome. Best regards, Hardware Secrets Team http://www.hardwaresecrets.com

Laptop Deals			Powered by Shopping.com
Acer (LU.S680B.066) PC Notebook From $256	Toshiba NB205-N310/BN (PLL20U-00201D) Netbook From $370	Acer AOD250-1116 (LU.S700B.029) Netbook From $287	ASUS (1005HA-PU1X-BU) Netbook From $360	Acer Aspire 1410-8414 (LX.SA90X.059) Netbook From $430

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

06-10-2009, 09:10 AM	#3
Gabriel Torres Administrator Join Date: Oct 2004 USA Posts: 2,553	Thanks Travis for your comments...

06-24-2009, 01:34 PM	#4
Gabriel Torres Administrator Join Date: Oct 2004 USA Posts: 2,553	The results from this review were updated today to reflect AC power and efficiency measured by our new precision power meter. Because of the new results we REMOVED the award we previously gave to this power supply and moved it to our "not recommended" category due to its low efficiency (it can only deliver above 80% efficiency if you pull between 200 W and 300 W).