The MaxTytan 1250 is a high performance PSU, with very good build quality and dead silent operation. This product is the clear proof that Enermax is back for good and we expect to see more from this company, which is in close cooperation now with Channel Well Technology. The strongest MaxTytan is ideal for hard-core mining applications, thanks to its high capacity, the provided number of cables/connectors and the magnetic bearing fan which will withstand extremely tough conditions without sweating.
Full power at 48°C
Accurate Power Ok signal
8x PCIe connectors (on dedicated cables)
Twister Bearing fan
Coolergenie fan controller
OCP on the minor rails and 5VSB
Position of the wattage meter's display
You can plug an EPS cable to a PCIe socket and vice-versa and these connectors aren't electrically compatible!
EMI (AVG detector)
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Features & Specifications
Remember back to when we wondered why anyone would need more than 1kW from a PSU, given efficient graphics cards and a general trend away from multi-GPU configurations? Obviously, mining wasn't so popular back then. Nowadays it is, though, and every brand faces shortages of power supplies with more than 1kW of capacity. In some cases, we even have trouble finding review samples.
PC enthusiasts generally aren't fond of miners, since they affect the hardware ecosystem so dramatically. Nevertheless, given the ongoing cryptocurrency craziness, we have to continue looking at high-capacity PSUs in order to figure out if they're suitable for mining rigs. You will find our suggestions in this article, which is based on models we've already evaluated.
MaxTytan is Enermax's high-end PSU line. So far, it features 1050W and 1250W models. They're both 80 PLUS Titanium-certified, and the flagship was certified by Cybenetics, carrying the ETA-A+ and LAMBDA-A badges.
Besides high efficiency and quiet operation, the EDT1250EWT features Enermax's Dust Free Rotation (DFR) technology, which prevents build-up inside the PSU's chassis. There is also an embedded wattage meter that, through a small digital display panel, shows power consumption in real-time. Unfortunately, this panel is installed where you'll probably never see it. It would have been better if Enermax made this detachable, allowing you to monitor power on your desk.
The EDT1250EWT is fully modular, which is great, given the huge number of provided cables and connectors. A maximum operating temperature of 50°C for full continuous load is what we like to see, as are all of the usual protection features Enermax includes.
The company's cooling fan is of excellent quality; it uses a magnetic bearing that's much more resilient in hot environments than fluid dynamic bearings. This is why we only accept double-ball or magnetic bearings in our recommendations for PSUs used in hardcore mining applications.
A 20cm length measurement makes the EDT1250EWT longer than most power supplies. Meanwhile, a five-year warranty seems low compared to what you get from Corsair, EVGA, and Seasonic. But we think that's a fairly realistic guarantee.
|Total Max. Power (W)||1250|
The minor rails look weak. However, no modern PSU is going to need more from them than what Enermax offers. Conversely, the single +12V rail is nice and beefy. On paper, it can deliver up to 104A, though in real life it goes even higher before OCP kicks in. Maximum power on the 5VSB rail is set at 15W, which should be enough in most cases.
Cables & Connectors
|Description||Cable Count||Connector Count (Total)||Gauge||In Cable Capacitors|
|ATX connector 20+4 pin (600mm)||1||1||16-20AWG||No|
|4+4 pin EPS12V (700mm)||1||1||16AWG||No|
|Eight-pin EPS12V (700mm)||1||1||16AWG||No|
|6+2 pin PCIe (600mm)||8||8||16-18AWG||No|
|Four-pin Molex (500mm+140mm+140mm+140mm)||2||8||18AWG||No|
|FDD Adapter (+100mm)||1||1||20AWG||No|
|Coolergenie - Power Supply Cable (+600mm)||1||1||22-24AWG||No|
|Coolergenie - Four-pin Fan Cable (+500mm)||1||1||26AWG||No|
|Coolergenie - Four-pin Fan Extension Cable (+500mm)||1||1||26AWG||No|
|AC Power Cord (1400mm) - C13 coupler||1||1||18AWG||-|
As expected, we find two EPS connectors and plenty of PCIe connectors. There are an astounding 16 SATA connectors available, along with eight four-pin Molex ones. All cables are quite long, while the distance between peripheral connectors is adequate. The best part for mining applications is that the PCIe connectors are installed onto dedicated cables.
Since this PSU features a single +12V rail, we do not have anything to say about its power distribution.
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Aris Mpitziopoulos is a Contributing Editor at Tom's Hardware US, covering PSUs.