Some PSUs have no right to exist. The Sinan Power VP-430 430W at 22.40 (about $28) belongs in this classification if you want a reliable PSU. The Sinan Power is a ~215 watts power supply without active power factor correction—not to mention the fact that the efficiency is always below 75%. Sinan Power offers nothing more than three SATA and a few HDD connectors on very short cables. Once again it can be stated that you get what you pay for!

The be quiet! System Power 350W at 29.75 (about $37) is one of the 350W units we can recommend for Office use. The downside of the PSU is that there is no connector for graphics cards, but this shouldn't hurt too much. Three SATA and HDD connectors are provided and there is a floppy connector at 75cm. be quiet! uses Taiwanese capacitors like most manufacturers in this roundup. be quiet! will be finally entering the US market later this year which is a good news for enthusiasts as they deliver the quietest PSUs in Germany.

Thermaltake offers a few power supplies which come up to expectations but the Thermaltake Smart AP-430P 430W at $61.99 didn't do well as the efficiency was low. 83.64% is the highest value we measured during the test. During 20% load Thermaltake didn't even surpass the minimum requirement for 80 Plus. You get the usual set of accessories and cables, but there are no unique features or remarkable results, which should be mentioned.

The Rosewill Green Series RG430-S12 430W at $44.99 provides many connectors except the PCI-E plugs. The model reached up to 84% efficiency and more than 40mV ripple and noise on the smaller rails. This should be avoided next time. However, the PSU stays stable all the time and comes with several extras such as cable ties. In summary, the RG430-S12 is a decent mainstream PSU.

The OEM models by FSP (FSP400-60APN 230V version and FSP400-60GHN(85)) performed well in our test. All the modern FSP PSUs we've reviewed have no problems with ripple and noise, and that trend continues here. However, both models provide just a 4-pin CPU connector and 6 to 9 peripheral plugs. Additionally, you get only one 6-pin connector for graphics cards. Like most PSUs in this roundup both models have all important safety functions including OCP and a common forward converter. All in all we have to criticize the cable configuration, which plays an important part when building a PC.

Comparison: Max. Efficiency
PSU Efficiency (230VAC)
FSP Raider 90.54%
FSP400-60GHN(85) 86.76%
Enermax NAXN 86.39%
Rasurbo RAP 86.27%
be quiet! System Power 85.86%
Corsair CX430 V2 84.90%
FSP400-60APN 84.64%
Rosewill Green Series 83.73%
Thermaltake Smart 83.64%
Sinan Power VP-430 74.13%

The Corsair CX430 V2 430W at $39.99 is an affordable power supply with low ripple on all rails. The number of connectors and their distribution is satisfying as well. During the load test the regulation of the output voltage is sufficient, and the efficiency is decent for an 80Plus model. The contents of the package are also very welcome. The power supply uses a well known layout from CWT and it's a cheaper design. The relatively low-end capacitors are acceptable for a PSU in this range. Under load the power supply is clearly audible, reaching up to 27 dBA.

The Rasurbo RAP350 350W at 30.84 (about $39) and RAP450 450W at 43.59 (about $55) use Taiwanese capacitors from Teapo, there's a lot of space for cooling and airflow, and they've chosen better MOSFETs than Thermaltake. The RPMs are tolerable up to 50% load causing a low fan noise. In terms of voltage stability, the 3.3V rail measures 3.19V during our overload scenario. All the other outputs are closer to their optimal values. The package includes all important extras and 86% efficiency is pretty nice. In addition there are two PCI-E connectors at the 450W model. We are pleased to present Rasurbo with our Bronze Editors' Choice award.

The Enermax NAXN ENP450AWT-B 450W (no price available) is very efficient and stable. In addition Enermax provides one more SATA connector and longer cables than Rosewill which is usually more important than a few additional HDD plugs. There is no heavy increase in acoustic noise during operation, but the fan already starts at a high RPM. Beside this we couldn't find any major flaws. Inside we found the same double forward topology Corsair used. However, Enermax has more efficient components and the cable configuration is more extensive. In addition the NAXN used a better looking cable sleeving, probably the best in this roundup. Enermax also performed well, reaching low ripple and noise results and an ideal voltage regulation. Last but not least we can recommend the PSU because of features like the HeatGuard and many safety functions. Enermax deservedly earns our Silver Editors' Choice Award for providing a (nearly) flawless product.

The FSP Raider 80Plus Bronze 450W at a MSRP of $55 is the most expensive PSU in this roundup for the simple reason that they offer the best product. FSP provides two PEG connectors instead of one (which is enough to run either a lower-end SLI/CF setup or a single high-end graphics card with two PEG jacks), a 5-year warranty and a very high efficiency. In fact the efficiency was ~4 percentage points above the second best result (230VAC) and way above the necessary values for 80Plus Bronze (Silver at 115VAC, Gold at 230VAC). FSP integrated well chosen components and the well known active-clamp design. Moreover FSP implemented all safety functions including OCP. Five SATA connectors and a very long CPU cable perfect the PSU. The fan's RPM and the load rise equally, but the noise is still acceptable compared to the Aurum models. We’re awarding FSP our Gold Editors’ Choice award.

Comparison: Peripheral Cable Lengths


View All Comments

  • fic2 - Tuesday, July 3, 2012 - link

    I have bought two of these on sale from newegg for about $17 after $20 rebate. For $17 these are great power supplies. Reply
  • Martin Kaffei - Tuesday, July 3, 2012 - link

    Corsair is always a good choice. Enjoy! Reply
  • esteinbr - Tuesday, July 3, 2012 - link

    I agree. I purchased one of these on a similar deal at NewEgg. They ended up sending the 600w version of the PS so I got an even better deal on it but it's been a good inexpensive power supply. I do agree that it definitely isn't silent when the fan really spins up but it's not horrible either.

    Newegg happens to have this PS for 25$ after 20$ mail in rebate right now.
  • ImSpartacus - Tuesday, July 3, 2012 - link

    You got a competent 600W PSU for 17 bucks? You lucky SoB!

    I hope it found a good home in a nice machine.
  • StevoLincolnite - Wednesday, July 4, 2012 - link

    I've had a Corsair HX 620 for about 6 years now and it has NEVER skipped a beat, "only" got 1 year left on the warranty, I've recently relegated it to another machine and grabbed a Corsair HX 850.

    The thing with Corsair PSU's though is that you always have peace of mind as all the PSU's they offer are good.
  • CeriseCogburn - Sunday, July 8, 2012 - link

    None of these power supplies in the article are CHEAP - save perhaps the one Sinan that almost nobody likely recognizes.

    These PS are low wattage near top of the line PS.

    I'm not certain how the anand reviewer got that so wrong.

    Whatever - it's one word but still... it's the concept, and being correct about what is spewing forth that counts.

    These are EXPENSIVE power supplies.

    I can show the never joe blows here some cheap power supplies - or the article writer - since the elitist smell of self aggrandization is all about...

    I can't make it on 100K a year either...
  • nipplefish - Tuesday, July 10, 2012 - link

    uh... pipe down over there, guy. the most expensive psu is 55 dollars. most are around 30-40. what's cheap? 10 bucks? if you need a 10 dollar psu maybe you should reconsider your choice of hobbies. Reply
  • JonnyDough - Wednesday, July 11, 2012 - link

    Totally agree. Tom's wouldn't recommend low quality (cheap!) PSU's for two very good reasons:

    For one, you save money by spending more, especially if you leave your PC on all the time. Better efficiency at idle means you pollute less, and spend less money on energy.

    Secondly, if your PSU dies, your motherboard can go too. Who wants to waste money and have the hassle of that? Buy quality. At least if your motherboard perishes it probably isn't your fault (as long as you pay attention to ESD. Also, although you can buy better grade motherboards too by doing your research, but you will still get the one that dies the second day you use it now and then).

    If you want to buy an exploding toaster to power your PC have at it. That's one less ignorant poster online.
  • GeorgeH - Tuesday, July 3, 2012 - link

    You get what you pay for. I bought two of the V2 units - both exhibited coil whine across multiple builds and one failed to run reliably (standby power issues.) One I gave away and one is sitting on my parts shelf. It's anecdotal evidence but still enough to make me avoid them.

    Antec's EarthWatts 380D has been my default choice for awhile now, but I'll have to give some of these a shot.
  • Avalon - Tuesday, July 3, 2012 - link

    I don't think "you get what you pay for" always applies, because I bought a Seasonic X650 gold a while back, which is a fairly expensive and highly rated unit, and I get coil whine. It happens. Reply

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