Posted On: Mon, Sep-05-2016
Reviewer: Tazz
Product: Raidmax RX-735AP - Thunder V2 Series 735W Power Supply
Product Link: http://www.raidmax.com/power-supplies_rx-735ap.html
Supplied By: JonnyGURU
Price: $69.99 @ Frys.com

Introduction

Well well well, look what the Pug dragged in. Yup, it's been a little while since I've had the pleasure of trying to type one of these reviews up. Thankfully, Wolfie's been helping me out here and there, Izzy too. Today I will be taking a look at the Raidmax Thunder V2 Series. Believe it or not, this is the 2nd Raidmax unit we've seen since I've been a part of the site. Wolf had the pleasure of looking at the Raidmax Monster Power RX700AT back in April which scored nicely. We'll have to see how the Thunder V2 RX-735AP holds up to the mighty SunMoon SM-5500ATE. 


Page 1 - Looking at the marketing and contents of the RX-735AP.

With JonnyGURU.com being mainly composed of power supply reviews, is it odd that this is only our 2nd Raidmax review? If you was to go searching around the web looking for Raidmax PSU reviews, you're going to find a lot of negative remarks. I think our first Raidmax review of the Monster Power RX-700AT is more than enough reason to not count them out. You shouldn't judge a brand by it's name. Judge their product(s) on an individual basis, because there's a lot of manufactures out there producing lower end units to fill the market. Although we do need to keep pushing manufactures for quality products.

The Raidmax Thunder V2 735W unit is 80+ Bronze rated and tells us right off, that we're not going to be in the same class as the Monster Power was. Believe it or not, there is still a market for these Bronze rated units. This specific unit has been getting mentioned around the net and yet there wasn't any proper reviews of it. Well of course we had to acquire one so we could take a look at it for ourselves.  

Yup, we get it, it's 80+ Bronze rated. Here on the back of the box we can find the specifications, the connector count, and the features. To make it a little easier to read we'll list them out for you.

  • Modularized cable design for easy cable management and improved airflow inside the case.
  • 80 PLUS BRONZED certified for energy saving.
  • Environmental friendly technology reduces the loss of electricity and save your money on facility bill and High Efficiency.
  • Optimized silent design 135mm blue LED fan maximizes the airflow and minimizes the noise.
  • Industrial grade protection circuitry prevents damage resulting from SCP, OVP, UVP, OPP.
  • Black and blue color twisted fishnet cable.

WOW! That was fun trying to type it the way it was written. The first bit gave me the impression that we are looking at a fully modular PSU, but unfortunately it's NOT! This is the first time I've sleeving referenced as fishnets.... I might have worded things a little differently.

Nothing to see on the sides of the box other than the model #, RX-735AP

Ouch! It's been a while since I've had a unit shipped to me that only had a little bubble wrap on it. Sure, everything is squeezed in there tight enough that it should hold it in place. It isn't going to prevent any damage should it get tossed around by the parcel carrier of your choice.

Dang it Wolf! I didn't get any candy with my unit. Nor are there any extra goodies included with this unit. You get the PSU, the modular cables, the power cord (oops that wont work here) and a bag of screws... No Velcro straps, no zip ties, no User Manual...



Page 2 - The RX-735AP and its cables.

For being a budget minded PSU, The Raidmax Thunder V2 series looks pretty good. I do wonder if the added hexagon mesh grill design will cause a bit of extra fan noise? It's not like my SunMoon SM-5500ATE is going to let me hear anything while testing it.

Not as much to look at from this angle. We do catch a glimpse at the modular interface.

Here's another look at the FULL RANGE sticker, er... I mean the rear hexagon exhaust vents.

Although we do poke fun at things once in a while, we do try to provide plenty of pretty pictures. What I really hate about that process, is the fact that we have to watermark all of our images. It's so sad that we have to fight tooth and nail to keep people from stealing images and content. I just went through a bit of a struggle last week trying to get some of our stolen content removed from another site.

Anyways, back on topic here at the back of the PSU. Oops, it's another hexagon meshed panel.

Seriously, I'll quit, I know I'm no Wolfie. Here we have the specifications label. WARNING! Hazardous Area. The only thing I don't see is the temperature rating. Being that it's Bronze rated, we can be safe in assuming that it's not 50C. None the less, we're not going to let that little bit of information stop us from pouring the heat to it.

Raidmax RX-735AP - DC Output
DC Output +3.3V +5V +12V -12V +5VSB
20A 20A 53A 0.3A 2.5A
Max Power @ 40C ? 100W 636W 3.6W 12.5W
735W

We can see in that the unit is rated for the full 735W, but only 636W of it is available on the +12V rail. So... That means for us to get the full 735W, we're going to have to push both the +3.3V and +5V minor rails as well as the +12V to get it. It's not that big of deal when you have the unit connected to a load tester like we do (unless you pull a bone head move like me - more on that later), but doing it with an actual computer is a completely different story.

Here's a closer look at the sparse modular interface board.

The watermark shows up pretty good in this shot, he he.

For being a stamped grill, I really don't mind it as much as I thought I would.


Image Source : Raidmax

Works fairly well with the LED fan as far as looks are concerned.

Here we can see the RX-735AP stretching out her legs. I still think I would have used a different word to describe the sleeving on the cables, fishnets just don't fit. I would also like to see them either use all black wires or sleeve the cables a little further. Here we have the two fixed cables, the ATX 20+4 pin cable, and the ATX 4+4 pin cable. 

Next we have the two PCI-E cables with two PCI-E 6+2 pin connectors each.

Here are our SATA power cables. We have two cables with a total of eight SATA connectors.

Lastly we have the peripheral power cable consisting of three 5.25" power connectors, and one 3.5" power connector. (Yes Wolfie, it's a BERG connector). 

Raidmax RX-735AP - Cabling
Type of Cable Length from PSU
Fixed Cables
ATX 20+4 pin connector 510mm
ATX 4+4 pin connector 610mm
Modular Cables
PCI-E 6+2 pin 490+150mm
PCI-E 6+2 pin 490+150mm
SATA+SATA+SATA+SATA 500+150+150+150mm
SATA+SATA+SATA+SATA 500+150+150+150mm
5.25"+5.25"+5.25"+3.5" 490+150+150+150mm
Unit Dimensions(L x W x H)
165mm x 150mm x 86mm

Here's our normal cable table laid out all nice and proper for you. I know Wolf frowns on those berg connectors these days, but I still use them every now and then in my builds. If their going to include one, I would like to see it done as an adapter rather than being daisy chained on the peripheral cable. It just gives you the option if you want it, rather than forcing it on you. Right Wolfie?



Page 3 - Cold testing the Raidmax RX-735AP - 735W PSU

Before we begin, let's get all the goodies on the table. The SunMoon SM-5500ATE will take on the chore of loading the Raidmax RX-735AP. A Rek PF9901 power meter, a USB Instruments Stingray oscilloscope, a dual probe thermometer, and a Fluke digital multi-meter will all jump on board to assist in collecting all the necessary data we need.

Starting things off we have the standby efficiency tests.

Raidmax RX-735AP - STANDBY Load Tests
Test # +5VSB DC Watts/
AC Watts
Eff. P.F.
1 0.50A 2.6W/
3.4W
74.9% .374
5.12V
2 1.3A 6.3W/
8.5W
74.4% .443
5.06V
3 2.5A 12.3W/
17.2W
71.8% .491
4.94V

Looking at our results, we really don't have have a lot to talk about. The voltage stability leaves us wanting a lot more, coming in at 3.6%. The efficiency side of the table isn't looking all that impressive either. 

Raidmax RX-735AP - Cold Load Tests
Test # Load +3.3V +5V +12V +5VSB DC Watts/
AC Watts
AC
Input
Eff. P.F. Intake/
Exhaust
Progressive Load Tests
Test
1
10%
0.9A 0.9A 5.2A 0.3A 72.7W/
92.3W
124.8V 78.7% .935 23C/
25C
3.38V 5.21V 11.97V 5.13V
Test
2
20% 1.8A 1.8A 10.6A 0.5A 145.4W/
175.5W
123.8V 82.9% .973 23C/
26C
3.37V 5.19V 11.89V 5.10V
Test
3
30% 2.7A 2.7A 16.0A 0.8A 217.5W/
260.3W
123.4V 83.6% .987 24C/
28C
3.36V 5.17V 11.83V 5.06V
Test
4
50% 4.5A 4.5A 26.8A 1.3A 360.6W/
434.2W
123.3V 83.1% .993 25C/
31C
3.33V 5.14V 11.75V 4.99V
Test
5
70% 6.3A 6.3A 37.6A 1.8A 501.8W/
618.3W
123.3V 81.2% .995 26C/
34C
3.30V 5.10V 11.67V 4.91V
Test
6
80% 7.2A 7.2A 43.0A 2.0A 571.6W/
714.2W
123.5V 80.0% .995 27C/
36C
3.28V 5.08V 11.63V 4.87V
Test
7
90% 8.1A 8.1A 48.4A 2.3A 640.5W/
814.0W
122.8V 78.7% .995 27C/
38C
3.26V 5.05V 11.59V 4.82V
Test
8
100% 9.0A 9.0A 53.0A 2.5A 700.2W/
907.0W
122.7V 77.2% .994 28C/
40C
3.26V 5.01V 11.55V 4.78V
Crossload Tests
Test CL1 12.0A 12.0A 1.0A 0A 112.0W/
152.8W
124.7V 73.3% .965 25C/
27C
3.34V 4.84V 12.39V 5.12V
Test CL2 1.0A 1.0A 52.1A 0A 596.6W/
749.7W
123.7V 79.6% .995 26C/
37C
3.31V 5.30V 11.26V 5.06V

Moving on to the meat and potatoes section of the review. 

Looking at the voltage stability from Test 2 through Test 8. We end up with 3.7% on the +3.3V rail, 3.9% on the +5V rail, an average of 3.44% on the +12V rail, and 7.08% on the +5VSB rail. For the most part, when we are looking at a budget minded unit, hitting a 3% average is passable. Our problem here is that we're hitting below that 3% across the board.

Next up we're taking a look at the efficiency of the RX-735AP. This unit is 80+ Bronze rated which means we should see 82%+ in Test 2, 85%+ in Test 4, and 82%+ in Test 8. We manage to hit 82.9% in Test 2, which is great. In Test 4, we fall short of the mark by 1.9%. In Test 8, we aren't even remotely close coming in 4.8% short of the goal.

Without knowing the temp rating on this unit, I was bit surprised to see that it stayed as cool as it did during testing.

I want to note before someone points it out for me. I did slip up and leave my minor rails at a combined 75% of max output (which is my normal setting) during my load calculations. This is why I only show this unit hitting 700W's instead of the rated 735W. My calculations had me coming in close at 724W's, but with the voltage dropping off as it did, it helped me miss the mark even more.



Page 4 - Hot testing the Raidmax RX-735AP - 735W PSU

Raidmax RX-735AP - Overshoot Transient Tests
VSB On VSB to Full, 12V Off to Full, 12V

Here we have our power on spike tests. The 5VSB rail managed to hit a spike of 5.3 volts. ATX spec wants to see no higher than 5.5V, so we just squeak by there. We are doing a little better on the +12V side, but we are still left wanting more er.. better. 

Raidmax RX-735AP - Hot Load Tests
Test # Load +3.3V +5V +12V +5VSB DC Watts/
AC Watts
AC
Input
Eff. P.F. Intake/
Exhaust
Progressive Load Tests
Test
1
10%
0.9A 0.9A 5.2A 0.3A 72.6W/
92.2W
124.0V 78.8% .933 25C/
24C
3.38V 5.20V 11.96V 5.13V
Test
2
20% 1.8A 1.8A 10.6A 0.5A 145.3W/
175.4W
123.9V 82.9% .973 26C/
26C
3.37V 5.19V 11.88V 5.09V
Test
3
30% 2.7A 2.7A 16.0A 0.8A 217.3W/
260.2W
123.4V 83.5% .986 28C/
29C
3.36V 5.17V 11.82V 5.06V
Test
4
50% 4.5A 4.5A 26.8A 1.3A 360.4W/
434.6W
123.0V 82.9% .994 31C/
33C
3.33V 5.14V 11.74V 4.98V
Test
5
70% 6.3A 6.3A 37.6A 1.8A 501.7W/
619.0W
122.7V 81.0% .994 34C/
37C
3.30V 5.09V 11.67V 4.90V
Test
6
80% 7.2A 7.2A 43.0A 2.0A 571.4W/
716.4W
123.0V 79.8% .995 36C/
40C
3.29V 5.07V 11.63V 4.86V
Test
7
90% 8.1A 8.1A 48.4A 2.3A 640.3W/
818.7W
122.9V 78.2% .995 38C/
43C
3.27V 5.05V 11.58V 4.81V
Test
8
100% 9.0A 9.0A 53.0A 2.5A 699.8W/
913.5W
122.4V 76.6% .994 39C/
46C
3.26V 5.02V 11.55V 4.77V
Crossload Tests
Test CL1 12.0A 12.0A 1.0A 0A 111.9W/
152.4W
123.6V 73.4% .967 29C/
29C
3.33V 4.84V 12.40V 5.12V
Test CL2 1.0A 1.0A 52.1A 0A 596.1W/
752.5W
122.2V 79.2% .994 38C/
44C
3.31V 5.31V 11.25V 5.06V

With the hot box in tow, we start off with the voltage stability part of the course. 

Looking at the voltage readings, we're all over the place. The +3.3V rail increased just a smidge from 3.7% to 3.88%. On the +5V rail we decreased from 3.9% to 3.6%. Surprisingly, the +12V rail didn't budge at all. I thought for sure the +5VSB rail couldn't be any more suctacular, but I was proven wrong when it increased from 7.08% to 7.28%. At this level of fail, it's kind of a moot point. Even without looking at the +5VSB rail (which we normally don't), we would still land in the below average category.

Moving over to the efficiency table, we are looking for 82%+ in Test 2, 85%+ in Test 4, and 82%+ Test 8. In the cold tests we hit 82.9, 83.1, and 77.2, which is obviously a FAIL, here in the hot tests things just keep getting worse. At the 20% level in Test 2, we manage to stay in the Bronze range coming in at 82.9%. At the 50% level, our efficiency drops a little from 83.1% to 82.9%, which lands it in the Standard range. Sadly, we see the same trend at the 100% level. We drop from 77.2% in the cold test to 76.6% in the hot tests, which doesn't even make hit the Standard range. We didn't miss the Bronze rating by a little, we missed it by a mile.

It's a bit surprising to see how well this unit handled the heat when looking at the poor efficiency results. I expected it to run hotter than this. Looking at a few other units that had been tested on this setup at similar loads, the RX-735AP is definitely running a few degrees hotter.

Next up is those nice squiggly lines graphs.

Raidmax RX-735AP - Oscilloscope
Test # +3.3V +5V +12V +5VSB
Test
1
Test
2
Test
3
Test
4
Test
5
Test
6
Test
7
Test
8
Test
CL1
Test
CL2

In an attempt to keep up with the Wolfmeister, I've been zooming in as best I can with the ol Stingray... Anyways, we're looking at a peak of 12mV on the +3.3V rail, landing it in the good category. The +5V rail also wants to join the party in the good category coming in at 15mV. Over on the +12V rail though, we fall into the average category with a peak of 52mV. Don't worry though, it wont be lonely there because the +5VSB is going to be joining the group with a peak of 27mV. What can you say? This is probably the best results so far for the RX-735AP.



Page 5 - Looking inside the Raidmax RX-735AP PSU.

The cooling is handled by a Power Year PY-1325H12S fan (12V, 0.28A, 1800RPM, brushless). It does have the blue LED going for it :).

With the RX-735AP topless, we have our first glance at inner makings.

Looking at the solder side of the PCB, overall it looks pretty decent. Although the two wires connecting the PCB to the AC receptacle and switch did look like they had previously been removed. I see one spot up there toward the upper left that might have had some work done. 

 

 

Here we have look around the unit at the ground level.

 

There's not a whole lot to the modular interface board. 

At the back of the AC receptacle, we have the start of the line filtering with a single X capacitor.

Toward the left front corner of the main PCB we find the rest of the line filtering, which includes a MOV, two chokes, another X capacitor, and two Y capacitors.

 

Just to the left of that second choke is the bridge rectifier, GBU1006.

  

Next up we have the primary heatsink and it's components. Left to right we have a pair of MDF13N50B mosfets and a PJA1520 B7 diode for the APFC.

 

At the end of the primary heatsink we find the TEAPO LH Series, 420V330F capacitor that is rated at only 85C.

 

On the second smaller heatsink we find the main switchers, which are a pair of MDF18N50 mosfets.

   

Over on the secondary heatsink from left to right we have a pair of 5RX43 mosfets, a 5RK56 mosfet, and a 5SF67 mosfet.

Note: I seemed to have made an error in while failing to properly identify these components on the secondary heatsink.

Over on the secondary heatsink we have a group of schottky barrier rectifiers. On the left are 2 MBR3045CT, then we have a MBR30100CT, and a MBR20100CT.

 

On the rear of the secondary heatsink we have a 5SF04 mosfet, and a 5SX60 mosfet.

On the rear of the secondary heatsink we have another pair of schottky barrier rectifiers, MBR20100CT on the left, and a MBR30100CT.

Secondary side is populated with several JunFu WG series 105C rated capacitors.

 

Down in front of the secondary heatsink we have a ST9S313A-DAG supervisor IC. Located on the backside of the main PCB is the CM6805BG PFC/PWM combo controller.



Page 6 - Scoring the Raidmax RX-735AP - 735W PSU

Performance (40% of the final score) - It's time for some scoring and first up we have the voltage regulation. I'm not going to score against the poor performance of the +5VSB rail because this is something that we normally don't show. The +3.3V rail gave us an average of 3.79%, the +5V rail gave us an average of 3.78%, while we had an average of 3.44% on the +12V rail. There's just not getting around it, we're looking at below average results costing this unit 2 points. When it comes to the efficiency, I expected this unit to be close to it's Bronze rating, but was surprised to see how quickly this unit started dropping off. That's a straight up fail Hot and Cold, another point off there. Although we looked good in the ripple/noise section we are still lacking a little causing us to pull a half a point. So that's a total of 3.5 points off, giving us a score of 6.5.

Functionality (20% of the final score) - As is normal for us here, I'm pulling a half a point for the RX-735AP being semi-modular. I know, I know, some of you don't agree with us on that. We're also going to be pulling a half a point for Wolfie's beloved Berg connector being permanently attached to the peripheral cable. The fixed to modular cable arrangement, as well as the connector count seems Ok for a 80+ Bronze unit, so no deductions there. The RX-735AP also comes without any kind of documentation. We also fail to get any kind of goodies included with the unit. No Zip Ties, no Velcro straps, no Raidmax badges, NOTHING! We're looking at another half a point deduction there, which gives us a total of 1.5 points deducted leaving us with a score of 8.5.

Value (20% of the final score) - The Raidmax RX-735AP can be picked for 69.99@ Frys.com. When looking around at Frys, we don't have a lot of options for comparison. We have the Corsair CX750 coming in at the same price point, the Thermaltake Smart 750 comes in at $79.99 (before rebates), and we have the likes of the Antec HCG-750M coming in at 119.99. With this unit performing so poorly, it's hard to even compare it to its fellow 750W units. It couldn't even muster up an 80+ Standard rating @ just under 100% load. For me, It'd be a tough decision between the Corsair CX750, or dropping down a notch and looking at the Antec HCG 620M for another $10. With the hit this unit took in performance, it's gonna hurt the score here. I'm going with a 7.

Build Quality (20% of the final score) - Overall the solder quality looks pretty good for this Andyson built unit. Although I wasn't able to find out all that much about the components used, I'm left questioning the fan and capacitor selection. It's not surprising for a Bronze rated unit, but we're still going to be pulling a point off for each, leaving us with a score of 8.

Performance

6.5

Functionality

8.5

Value

7

Build Quality

8

Total Score

7.3

Summary

Overall the RX-735AP took a pretty good beating. It showed below average results when it came to voltage regulation. Looking at the efficiency, it hit bronze at 20%, but only hit standard at 50% and didn't even stay on the scale at just shy of 100%. Granted this unit does have a little age on it, but still we've been past the 80+ mark for some time. Sorry Wolf, I didn't mean to keep picking on you. It's just been to long since I've had the pleasure.

The Good:

  • Its good looking budget unit.
  • Good ripple/noise suppression.

The Bad:

  • FAILED, 80+ Bronze rating.
  • +5VSB rails performance across the board.

The Mediocre:

  • Below average voltage regulation.




This review was provided by : JonnyGURU

The URL for this review is :
http://www.jonnyGURU.com/modules.php?name=NDReviews&op=Story&reid=482