Contents
- 1Introduction
- 2Tsunami K P4-500W
- 2.1First Look
- 2.2Test Results
- 2.3Disassembly
- 2.4Specifications and Conclusions
- 3Honli ATX 680
- 3.1First Look
- 3.2Test Results
- 3.3Disassembly
- 3.4Specifications and Conclusions
- 4Powercase PHKPOW550120MM
- 4.1First Look
- 4.2Test Results
- 4.3Disassembly
- 4.4Specifications and Conclusions
- 5Aywun A1-3000
- 5.1First Look
- 5.2Test Results
- 5.3Disassembly
- 5.4Specifications and Conclusions
- 6A-Power P4-A680
- 6.1Test Results
- 6.2Disassembly
- 6.3Specifications and Conclusions
- 7Auriga Power MPT-301
- 7.1Test Results
- 7.2Disassembly
- 7.3Specifications and Conclusions
- 8Numan AT-580H
- 8.1Test Results
- 8.2Disassembly
- 8.3Specifications and Conclusions
- 9Ultraview 750W
- 9.1First Look
- 9.2Test Results
- 9.3Disassembly
- 9.4Specifications and Conclusions
- 10Thermal Master TM-420-PMSR
- 10.1First Look
- 10.2Test Results
- 10.3Disassembly
- 10.4Specifications and Conclusions
- 11Comparisons, Conclusions and Fireworks
- 11.1Graphs
- 11.2Conclusion
- 11.3The Fireworks
Powercase PHKPOW550120MM
First Look
I tested and blew up the Powercase PHKPOW55080MM power supply in last year’s roundup, which turned out to be a re-badged Huntkey CP-350. Hence, it couldn’t deliver much more than 350W on the load tester. Today, we have the 120mm fan version. Let’s see if it performs the same as its 80mm fanned cousin.
The ratings on the rails are all the same as they were on the 80mm fan version, suggesting that this is a more modern 12V oriented product. We’ll see later if that is true, as the other Powercase was actually more 5V oriented. Unlike most power supplies with 120mm fans, this one doesn’t use the honeycomb style grille on the back. Instead, the grill looks like brickwork on a 90° angle. This structure is also very open, and doesn’t block much airflow.
Test Results
Test 1 (74.04W Load)
| Rail | Load | Voltage | Ripple |
| 12V | 2.39A | 12.06V | 35.2mV |
| 5V | 5.02A | 5.02V | 12.6mV |
| 3.3V | 4.88A | 3.32V | 7.0mV |
| −12V | 0.1A | −12.22V | 12.2mV |
| 5Vsb | 0.51A | 5.06V | 5.8mV |
| AC Power | 96.3W | ||
| Efficiency | 76.88% | ||
| Power Factor | 0.63 | ||
| Intake Temp | 22°C | ||
| Exhaust Temp | 24°C | ||
.
Test 2 (102.7W Load)
| Rail | Load | Voltage | Ripple |
| 12V | 4.72A | 12.0V | 39.4mV |
| 5V | 5.04A | 5.04V | 13.4mV |
| 3.3V | 4.88A | 3.32V | 7.4mV |
| −12V | 0.1A | −12.31V | 14.4mV |
| 5Vsb | 0.51A | 5.06V | 6.2mV |
| AC Power | 129.5W | ||
| Efficiency | 78.82% | ||
| Power Factor | 0.63 | ||
| Intake Temp | 22°C | ||
| Exhaust Temp | 25°C | ||
.
Test 3 (157.84W Load)
| Rail | Load | Voltage | Ripple |
| 12V | 9.27A | 11.88V | 68.6mV |
| 5V | 5.07A | 5.07V | 14.0mV |
| 3.3V | 4.88A | 3.32V | 15.8mV |
| −12V | 0.1A | −12.47V | 72.4mV |
| 5Vsb | 0.51A | 5.05V | 30.8mV |
| AC Power | 194.7W | ||
| Efficiency | 80.07% | ||
| Power Factor | 0.63 | ||
| Intake Temp | 23°C | ||
| Exhaust Temp | 26°C | ||
.
Test 4 (202.09W Load)
| Rail | Load | Voltage | Ripple |
| 12V | 9.4A | 12.06V | 67.8mV |
| 5V | 9.94A | 4.97V | 19.6mV |
| 3.3V | 10.0A | 3.30V | 10.0mV |
| −12V | 0.11A | −12.75V | 23.2mV |
| 5Vsb | 1.01A | 5.03V | 9.6mV |
| AC Power | 252.6W | ||
| Efficiency | 80.0% | ||
| Power Factor | 0.63 | ||
| Intake Temp | 23°C | ||
| Exhaust Temp | 28°C | ||
.
Test 5 (255.1W Load)
| Rail | Load | Voltage | Ripple |
| 12V | 13.85A | 11.96V | 96.8mV |
| 5V | 10.0A | 5.0V | 22.2mV |
| 3.3V | 10.0A | 3.30V | 12.6mV |
| −12V | 0.11A | −12.56V | 33.8mV |
| 5Vsb | 1.01A | 5.0V | 11.2mV |
| AC Power | 322.3W | ||
| Efficiency | 79.15% | ||
| Power Factor | 0.62 | ||
| Intake Temp | 23°C | ||
| Exhaust Temp | 30°C | ||
.
Test 6 (304.7W Load)
| Rail | Load | Voltage | Ripple |
| 12V | 18.11A | 11.85V | 99.0mV |
| 5V | 10.06A | 5.03V | 28.4mV |
| 3.3V | 10.0A | 3.30V | 19.8mV |
| −12V | 0.11A | −13.20V | 48.4mV |
| 5Vsb | 1.0A | 5.02V | 16.8mV |
| AC Power | 403.8W | ||
| Efficiency | 75.46% | ||
| Power Factor | 0.61 | ||
| Intake Temp | 24°C | ||
| Exhaust Temp | 32°C | ||
.
The 12V rail started at 12.06V and dropped to 11.85V, which gives us 0.15V (or 1.25%) regulation and a drop of 0.21V (or 1.75%). The 5V rail had maximum and minimum values of 5.07V and 4.97V respectively, which gives us 0.07V (or 1.4%) regulation and 0.1V (or 2%) variation. The 3.3V rail read 3.32V for the first 3 tests and then dropped to 3.3V on the nose, where it stayed for the remainder of the testing. This gives us 0.02V (or 0.61%) regulation. The average result between the 3 rails is 1.09% regulation and 1.45% variation. This is a decent result, although there is still some room for improvement on the 5V rail.
The efficiency just barely cleared 80% at half load – which is just barely good enough not to knock any points off for on a unit that doesn’t have an 80 Plus certification to live up to. This power supply ran slightly cooler than the other two tested thus far, with the exhaust air being 2°C warmer than the intake in Test 1 and 8°C warmer in Test 6. This is possibly because of the slightly higher efficiency of this unit. The power factor results were typical of a unit with no PFC. This power supply was not able to deliver more than about 300W. I tried to load it to 350W for a seventh test, but it exploded after about a minute.
| Rail | Test 5 (255.1W) | Test 6 (304.7W) |
| 12V |  |
 |
| 5V |  |
 |
| 3.3V |  |
 |
| −12V |  |
 |
| 5Vsb |  |
 |
.
Like its 80mm fanned cousin, this power supply had decent ripple suppression on the 5V and 3.3V rails, but not on the 12V rail. On this unit, it was almost at 100mV in Test 6. This is in spec, but it’s above half the maximum, which will cost it half a point.
Disassembly
The input filtering consists of two X caps, one common-mode choke and two Y caps. This is enough capacitors, but there should be another coil. The primary capacitors are 470µF parts made by Jianghai. This capacitance is not usually seen on power supplies rated for more than 300W, and is definitely too small for a 550W unit. The bridge rectifier is rated at 4A, but it doesn’t have a heatsink on it, which will reduce its capacity. The switching transistors are two Fairchild FJP13009 BJTs rated for 12A. Again, 300W, or maybe 350W on a good day, is all that these transistors are usually capable of. Unlike the previous two products in this roundup, this power supply uses a switching IC for the 5VSB, which is a more fail-safe option, as they are not as prone to overshoots as a result of small capacitors failing. The IC used is an ON Semiconductor NCP1014.
The 12V rectifier is an NXP BYV32E-200 fast recovery rectifier, which is rated at 20A. Since the label claimed 30A of 12V capacity, the rectifier should have been rated for at least that. The 5V rail uses an STPS3045CW, which is rated at 30A, and the 3.3V rail uses a STPS2045CT rectifier, which is rated at 20A. The secondary capacitors are mostly from FCon – an obscure brand which I’ve only ever seen in Huntkey products. While the 5V and 3.3V rails have two capacitors, there is only one on the 12V rail, which explains why it had much higher ripple than the other two rails. The controller IC is a System General SG6105, which does support Over Power Protection, but it seems that it was either not enabled or set too high to be effective in this unit.
Both of the switching transistors blew when the power supply was loaded to 350W. Note how the washers have started to melt and the switching transistor in the above right picture is cracked.
The fan is a Yate Loon sleeve bearing part, which is wired directly to 12V and was audible throughout the testing. It had some grease in it, but oil would have been better as it doesn’t get pushed out. The heatsinks aren’t too bad, and are certainly better than what we’ve seen from other really cheap power supplies, but there’s definitely room for larger ones.
Specifications and Conclusions
| Real Wattage | 300W |
| OEM | Huntkey |
| PFC | None |
| Price | $35 AUD |
| ATX Connector type | 20+4 pin |
| Worst-case voltage regulation (12v, 5v, 3.3v) | 1.25%, 1.4%, 0.61% |
| Worst-case ripple (12v, 5v, 3.3v) | 99.0mV, 28.4mV, 19.8mV |
| Worst-case efficiency | 75.46% |
| Input filtering | Indequate |
| CPU Connector | ATX12V (4 pin) |
| PCIe Connectors | None |
| Molex (Peripheral) Connectors | 3 |
| FDD Power connectors | 1 |
| SATA Power connectors | 2 |
.
Pros: None
Cons: Can’t deliver labelled rating (−2), Low quality capacitors (−2), Noisy (−1), 5V-Heavy (−1), Inadequate input filtering (−0.5), Mediocre ripple suppression (−0.5)
Score: 3/10
Loading ...