Đánh giá corsair cx series cx430 năm 2024
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The PSU does not feature overcurrent protection so, taking also into account that there is only one +12V rail, overpower protection will handle the job if anything goes wrong. Finally, the warranty is satisfactory for a product of this category and price range. Corsair CX430 V2 Power SpecsRail3.3V5V12V5VSB-12VMax. Power20A20A28A3A0.8A120W336W15W9.6WTotal Max. Power430W @ 30°C ambient temperature Corsair states 430W maximum power at only 30°C. This is a very low ambient even for a case with good airflow. In our tests we will raise the ambient beyond 40°C and see how the PSU handles the heat. Let's remind you here that the ATX specification recommends that a PSU should be able to deliver full power even at 50°C ambient. Cables & Connectors, Power DistributionThe number of connectors in general is very restricted, something partially justified by the small capacity of the PSU. Regarding the peripheral connectors we would like to see two additional ones, since three are very few. Also to our surprise the PSU is equipped with a single 6+2 pin PCIe connector. To the best of our knowledge there isn't any VGA card that uses a single 8-pin power connector, instead all midrange cards are powered by one or two 6 pin connectors. High-end cards come with 6+8 pin or 2x 8-pin - but never a single 8-pin alone. It would have made much more sense if Corsair had put two 6-pin connectors on the cable, which have a maximum power draw of 150 W, just like a single 6+2 connector. This would dramatically improve the versatility of the power supply. Very weird choice indeed. Finally, all cables use 18 AWG wires, the ATX recommended wire size. Since this PSU features a single +12V rail we do not have anything to comment about its power distribution. Also, it's rated specifications are lower than the CX400. So basically they have just pushed out a cheaper, lower quality power supply and then lowered the bar so that it still passes certification. Compared to the CX400 28A 12V Rail - CX400 has a 30A Rail. In a world where PC's draw 85%+ of their power on the 12V rail this is basically a decrease in available power for your computer Rated to 30C temperature - The CX400 was rated to 50C. The difference between this is huge. For one thing, many countries routinely have ambient temperatures above 30C, which would push this unit out of spec. Secondly, even in an air-conditioned room the lower temperature tolerance means the unit is less resistive to being clogged with dust. With a PSU rated at 50C, a litte dust might just make it run a little warmer. With a PSU rated at 30C that little bit of dust could easily cause it to overheat and fail. CWT DSAII Platform - The Seasonic S12II was used in the CX400. Not only is the Seasonic platform better, but Corsair has over rated the CWT DSAII to decrease the cost. The unit inside of the CX430 is actually a 350W Powersupply @ 50C, and so by over rating the unit to 430W and decreasing the maximum operating temperature from 50C to 30C they have managed just barely to keep the unit in spec. This will mean higher ripple on the DC side (makes it harder to get stable overclocks). It also means a higher chance of failure, and lower efficiency. Hell, the CX430 isn't even 80+ cert! Sleeve Bearing Fan - The CX400 used a ball bearing fan. Ball bearing is better because the fan laster longer and produces less noise. The new sleeve bearing fan is prone to failure, especially around the 3 year mark - just when the PSU comes out of warranty. In conclusion, the CX430 is not very good. For $15 AR it's better than anything below $40, but I still wouldn't buy it. There are many better powersupplies in the $40+ range. So why did Corsair do this? I believe mostly to save money. Seasonic was phasing out the S12II platform to replace it with the S12II-B, which had some minor improvements which would allow the powersupply to make 80+ Bronze (rather than just standard 80+). This would have increased the cost of the unit a bit, and rather than doing that Corsair decided to cheap out. By switching to a cheaper OEM (CWT) and then over rating them to use lower wattage units. Every single other Powersupply line made by Corsair is amazing, and has none of the flaws mentioned above. I have used many of these such models in both my rigs and my client builds. Just stay away from the new CX builder line, that is the CX430, CX500 and CX600. Corsair certainly seem to have the Midas touch – earning a great reputation within whatever market they decide to target. Their reputation in the power supply sector is already one of the best and today we are looking at the follow up to the original CX430 – the new CX430 V2, created to offer a solid, reliable power supply at the lowest possible price point. The CX430 V2 is marketed at the same price as the original version, and gives a system builder 80 Plus Certification and an extended three year warranty. The CX series might not have gotten a lot of high profile attention in recent months, with the AX and HX series grabbing all the headlines. The CX V2 is classified as the ‘Builder' series and is offered in 430W, 500W and 600W models. Corsair Builder Series CX430 Features:
The Corsair CX430 V2 ships in a plain brown box with an artistic image of the power supply on the front and a giveaway ‘V2' moniker top right. The power supply ships inside a thick protective bag which is wrapped around the chassis. A user manual sits on top. Inside, there is only the user manual, mounting screws and some cable ties to clean up the system build. The power supply is nicely finished with green accented lettering on the side, and a large 120mm fan taking centerstage at the top. The rear of the PSU is fully vented with a power connector and power switch offset to the side. This is a non modular design, but the cable has a rubber housing to protect it as it enters the metal chassis. Cable Amount MB 20+4 pin x1 (620mm) CPU 4+4 pin x1 (620mm) PCI E 8 pin (6 pin +2) x1 (600mm) Sata power connectors x4 (2 cables – 420mm + 150mm) Peripheral 4 pin (molex) x3 (420mm) Floppy connector x1 For the limited power demand, there are plenty of cables supplied, including a 6+2 pin PCIe connector to power a modest graphics card. The sleeved cables are a reasonably high standard, especially for this low price point. Corsair CX430 V2 430W power supply DC Output +3.3V +5V +12V -12V +5Vsb Max Output 20A 20A 28A 0.8A 3A Total Power 120W 336W 9.6W 15W 430W The +12V output can handle 28A for 336W of the overall power output. Corsair are using a 120MM Yate Loon fan, model number D12SH-12. This is a sleeve bearing 2,200 rpm fan, which can produce 88 cfm airflow at 40 dBa. The Corsair CX430 V2 is a CWT design, a dead giveaway when we see the green transformers. Corsair have upgraded the +12V rectifiers and the PFC transistors. The power supply has two Y capacitors and a single X capacitor. The supply contains several rows of heatsinks which are positioned to help maintain good temperatures throughout the width. The supply contains a Samxon APFC capacitor which is rated at 85c, 400V and 180uf. Two AOT10N60 mofsets are used as primary switches. Filtering capacitors in the secondary side are a mixture of Samxon and Teapo and are rated to 105c. We noted a protection IC, the ST9S429. The cable is fully sleeved inside the chassis, protected against long term fraying. Additional technical assistance: Peter McFarland and Jeremy Price. Correctly testing power supplies is a complex procedure and KitGuru have configured a test bench which can deliver up to a 2,000 watt DC load. Due to public requests we have changed our temperature settings recently – previously we rated with ambient temperatures at 25C, we have increased ambient temperatures by 10c (to 35c) in our environment to greater reflect warmer internal chassis conditions. We use combinations of the following hardware: • SunMoon SM-268 • CSI3710A Programmable DC load (+3.3V and +5V outputs) • CSI3711A Programmable DC load (+12V1, +12V2, +12V3, and +12V4) • Extech Power Analyzer • Extech MultiMaster MM570 digital multimeter • SkyTronic DSL 2 Digital Sound Level Meter (6-130dBa) • Digital oscilloscope (20M S/s with 12 Bit ADC) • Variable Autotransformer, 1.4 KVA DC Output Load Regulation Combined DC Load +3.3V +5V +12V +5VSB -12V A V A V A V A V A V 88W 2.11 3.29 1.98 5.04 5.93 11.98 1.28 5.01 0.20 -12.02 200W 5.92 3.24 4.89 5.01 12.07 11.94 1.28 5.02 0.25 -12.03 340W 9.62 3.21 8.82 4.99 23.21 11.82 1.28 5.00 0.30 -12.05 430W 9.61 3.19 8.85 4.97 30.12 11.78 1.28 4.98 0.40 -12.08 Corsair CX430 V2 Maximum Load 522W We wrestled 522W from the unit before it would switch off. The overcircuit protection system worked fine and it shut off safely. A really good early indication of what is in store. Next we want to try Cross Loading. This basically means loads which are not balanced. If a PC for instance needs 500W on the +12V outputs but something like 30W via the combined 3.3V and +5V outputs then the voltage regulation can fluctuate badly. Cross Load Testing +3.3V +5V +12V -12V +5VSB A V A V A V A V A V 385W 2.0 3.28 2.0 5.03 30.0 11.76 0.20 -12.08 0.50 4.95 170W 18.0 3.20 12.0 4.89 4.0 11.94 0.20 -12.06 0.50 5.01 The Corsair CX430 handled the Cross loading tests very well, maintaining steady results with minor fluctuation. All voltages remained within stated tolerances. We then used an oscilloscope to measure AC ripple and noise present on the DC outputs. We set the oscilloscope time base to check for AC ripple at both high and low ends of the spectrum. ATX12V V2.2 specification for DC output ripple and noise is defined in the ATX 12V power supply design guide. ATX12V Ver 2.2 Noise/Ripple Tolerance Output Ripple (mV p-p) +3.3V 50 +5V 50 +12V1 120 +12V2 120 -12V 120 +5VSB 50 Obviously when measuring AC noise and ripple on the DC outputs the cleaner (less recorded) means we have a better end result. We measured this AC signal amplitude to see how closely the Corsair unit complied with the ATX standard. AC Ripple (mV p-p) DC Load +3.3V +5V +12V 5VSB 88W 5 10 10 5 200W 10 10 15 10 340W 15 15 20 10 430W 15 15 25 15 Ripple results are well within the parameters set down in the ATX12V Ver 2.2 standard. +3.3V and +5V are extremely impressive and the +12V rail is also very stable, never exceeding 25mV. Efficiency (%) 88W 81.68 200W 84.46 340W 82.45 430W 81.32 The CX 430 reaches almost 85% efficiency at 50 percent load, and this falls to just over 81% efficiency at full load. Good results for a 80 Plus certified product. We take the issue of noise very seriously at KitGuru and this is why we have built a special home brew system as a reference point when we test noise levels of various components. Why do this? Well this means we can eliminate secondary noise pollution in the test room and concentrate on components we are testing. It also brings us slightly closer to industry standards, such as DIN 45635. Today to test the Power Supply we have taken it into our acoustics room environment and have set our SkyTronic DSL 2 Digital Sound Level Meter (6-130dBa) one meter away from the unit. We have no other fans running so we can effectively measure just the noise from the unit itself. As this can be a little confusing for people, here are various dBa ratings in with real world situations to help describe the various levels. KitGuru noise guide 10dBA – Normal Breathing/Rustling Leaves 20-25dBA – Whisper 30dBA – High Quality Computer fan 40dBA – A Bubbling Brook, or a Refridgerator 50dBA – Normal Conversation 60dBA – Laughter 70dBA – Vacuum Cleaner or Hairdryer 80dBA – City Traffic or a Garbage Disposal 90dBA – Motorcycle or Lawnmower 100dBA – MP3 Player at maximum output 110dBA – Orchestra 120dBA – Front row rock concert/Jet Engine 130dBA – Threshold of Pain 140dBA – Military Jet takeoff/Gunshot (close range) 160dBA – Instant Perforation of eardrum Noise (dBA) 88W 28.5 200W 29.7 340W 31.3 430W 33.3 The CX430 is a quiet power supply which only becomes audible at around 75% load, and rises to just above 33 dBa when fully loaded. Under normal circumstances this power supply could be easily classed as almost silent. Temperature (c) Intake Exhaust 88W 35 37 200W 38 43 340W 42 49 430W 46 53 The large Yate Loon fan helps to generate high levels of airflow across the components inside the chassis, with a 7c above ambient intake registered at full load. Maximum load Efficiency 522W 79.2 Pushing the PSU above its rated limits generates an efficiency level of around 79.2%. This is not a viable ‘real world’ situation, but its interesting nonetheless. The Corsair CX430 V2 looks like an rather forgettable, low priced product on paper, but in reality it is a hell of a bargain. The shipping materials may be very plain, but the appearance of the unit itself is surprisingly attractive, with subtle green lettering on the plain black chassis. Technically, the design has literally no weaknesses. The internal CWT topology is stellar and cross loading, load regulation and noise suppression are all as good as we have seen in this price bracket. The overall technical analysis highlights that Corsair have paired up with CWT to produce one of the finest budget power supplies ever released. We have tested power supplies at over twice the price with worse regulation and noise suppression than the CX430. Not everyone can afford, or needs a 80 Plus Gold Certified 1000W power supply, and if you are in the market for a general, low cost power supply for a media center, office machine or entry level gaming rig then this should certainly be top of your shortlist. We are still quite shocked how good the test results are. This unit will last a long time, and Corsair clearly have the same feeling as they are confident in offering an extended three year warranty. |
