Protection Features
| OCP (Cold @ 27.6°C) | 12V: 131.40A (121.33%), 11.937V 5V: 25.2A (126.00%), 5.013V 3.3V: 25.1A (125.50%), 3.343V 5VSB: 4.4A (146.67%), 4.97V |
| OCP (Hot @ 44.1°C) | 12V: 130.40A (120.41%), 11.953V 5V: 24.1A (120.50%), 5.024V 3.3V: 23.9A (119.50%), 3.352V 5VSB: 4.3A (143.33%), 4.971V |
| OPP (Cold @ 27.6°C) | 1572.92W (120.99%) |
| OPP (Hot @ 43.7°C) | 1572.97W (121.00%) |
| OTP | ✓ (125°C @ Secondary Side) |
| SCP | 12V to Earth: ✓ 5V to Earth: ✓ 3.3V to Earth: ✓ 5VSB to Earth: ✓ -12V to Earth: ✓ |
| PWR_OK | Proper Operation |
| NLO | ✓ |
| Fan Failure Protection | ✗ |
| SIP | Surge: MOV Inrush: NTC & Bypass Relay |
Since the fan operates at low speeds in this PSU, the OCP and OPP triggering points are relatively low enough to protect it from abuse. I would like to see a larger difference between the 12V OCP’s triggering points and the OPP ones between hot and cold conditions.
The lack of fan failure protection is a huge miss in this platform, which already employs MCUs, so it could easily have it. From the moment the PSU can deliver up to 1300W of power, and its fan doesn’t spin at high speeds because of the large heat sinks, if suddenly active cooling stops, there could be problems because of the increased stress at the platform’s respective parts. Fan failure protection is essential to power supplies; all manufacturers should implement it.
Pages:
“A lower ripple at 12V under full load would be highly welcome, but I want a better transient response on this rail at high loads. To achieve this, more capacitance is required, and polymer caps don’t cut it there, so you need to use electrolytic ones, which are not as tolerant to high temperatures. Given that CM wants to keep the fan’s speed low, this could lead to problems. This is a design challenge that CM’s engineers have to handle.”
Why does CM have to do this? Perhaps you should demand that the standards be more strict, as this unit meets them, correct? If the transient response fails the standard then I can understand the demand. Otherwise, it’s an aspiration until some other company comes out with a PSU that is this quiet with this high a wattage.
I don’t agree with the warranty criticism. It is stated definitively without proof:
“Such a long warranty period will eventually create problems for both the brand and consumers”
Will? How about “might”? It’s actually refreshing to see a company stand behind their product. 15 years is not an unreasonable lifespan for a PSU.
The price of $459 MSRP (inc. VAT) is just too much for most PC builders; at least the Cooler Master X Silent MAX Platinum 1300 has a 6% deviation in 200% load ATX v3.1 transient response tests. Unfortunately, the transient response is not good at 120/160/180% load tests, and the ripple suppression is not very impressive on the 12V rail (full/100% load), especially when considering the high price.
On the other hand, the XPG CyberCore II 1300 and Seasonic Prime TX-1300 are still the best-performing 1300W PSUs in the ATX v3.1 transient response test (200% load) on the 12V rail.
The problem with the Seasonic Prime TX-1300 (€ 425) is its ridicolous price in the EU when compared to the XPG CyberCore II 1300 (€ 230).
Not my choice for a 1300W PSU.
Silence costs money.
In this price range one can get a seasonic 1000-1300W model and never look back.
Disagree with Seasonic. In 2021-2022 i remember quiet a few articles on techpowerup, tom’s hardware, reddit etc about issues with their PSU (and bad warranty service). Be careful with these brands like Noctua promising eternity* We have seen recently Asus, EK…
Seasonic prime is the only power supply I’ve had problems with, first it would turn on occasionally then it even stopped turning on. And I’m not the only one. The CWT platforms are much more reliable
This coolermaster psu is an excellent unit. You would be silly to not give it a solid consideration when it comes time to purchase.
You’re kidding me for $459 MSRP?
Not affordable
Protection features need tuning for larger differences in the triggering points (12V OCP & OPP) between hot and cold conditions
12V rail’s transient response needs to get better in ATX v3.1 test scenarios
Efficiency needs boosting at light loads
The 3.3V rail needs tighter load regulation
Increased vampire power
Ideally, it should have an IEC C20 input/socket
Such an extended warranty period will eventually create problems for both the brand and consumers
It seems reasonable to me, considering how quiet it is and because the warranty is so long.
I’d rather pay more for quality versus less for something that won’t last as long and which increases noise pollution.