The ROG Loki series of power supplies debuts in the 750W/850W/1000W version, all of which are 80Plus Platinum certified products in the SFX-L specification, which is high enough in terms of specifications. However, ROG will always look a little further ahead, and it is true that most of the SFX-L power supplies are used on compact platforms, although such platforms rarely move closer to the flagship level in terms of hardware, but there are indeed many gamers who like high-performance small steel guns, for whom a strong power supply is essential. That's why ROG promised at the debut of the LOKI series that there will be more powerful LOKI power supplies in the future.
The ROG Loki 1200W Titanium Power Supply is the promise of the time, this power supply not only provides a 1200W power rating, but also has 80Plus Titanium certification, and also provides two 600W 12V-2x6 ports, which can not only meet the needs of today's flagship platforms, but also have ample confidence to cope with the high-power hardware of the future.
ROG LOKI洛基1200W Titanium电源
ROG LOKI洛基1200W Titanium电源外观赏析
ROG LOKI 1200W Titanium power supply follows the design of existing products in terms of exterior design, with an overall size of 125x125x63.5mm, which belongs to the extended SFX, which is often referred to as the SFX-L specification. And thanks to more space, the ROG LOKI 1200W Titanium power supply can not only use a 12cm diameter cooling fan, but also a higher-spec ROG custom heatsink and more adequate component materials, laying a solid foundation for the power supply's performance.
ROG LOKI 1200W Titanium is 80Plus Titanium certified, supports 100V to 240V AC input, with a total output power rating of 1200W, a single +12V output design, +12V output current is rated at 100A, which is equivalent to 1200W rated power, and +5V and +3.3V are converted from +12V via DC-DC circuitry, with an output rated at 20A and a combined output power rated at 110W;+The 5V standby is a rated 3A power supply, which is equivalent to 15W output power.
The ROG LOKI series power supplies are similar to the ROG THOR series in terms of design, with a detachable aluminum fan grille on the top and a 12015 fan installed below, with a transparent frame and transparent fan blades that support Aura Sync.
The side of the power supply is also similar to the style of the ROG THOR series, but due to the limited space inside, there is no power meter, and the silver part is a simple mirror, which is combined with the black area to form a silver-black contrast design.
The power supply adopts a full-module cable design, and all cables are embossed wire design, which has a very good feel and softness. The module interface on the power supply is divided into four groups, of which the combination of 18pin + 10pin is used to expand the main power supply interface to 24pin, the 3 6pin interface is used to expand the total of 6 SATA power supply and 4 D-type 4pin interfaces, and the 2 8pin ports are only used for CPU power supply, and each 8pin can be extended to 1 4+4pin CPU power supply interface.
There are 2 native 12V-2x6 module interfaces, which can be expanded with 2 12V-2x6 ports with 600W power, and if you need to use the 6+2pin PCI-E interface, it is also extended from the 12V-2x6 module interface, providing a total of 2 module cables, and a total of 4 6+2pin PCI-E power supply ports can be expanded. There is also a 2-pin connector for connecting to the motherboard to provide AURA SYNC for the fans.
The AC input of the power supply has a separate switch
ROG LOKI洛基1200W Titanium电源拆解赏析
The power supply is equipped with Honghua HA1215H12SB-Z fan, 120mm diameter, 11 fan blade design, double ball bearing bearings, DC12V 0.55A input, the measured maximum speed can reach 2500RPM, and PWM speed regulation is adopted. The fan supports 0 dB FAN intelligent start-stop function, which is conducive to controlling the operating noise of the power supply, and the fan is transparent from the frame to the fan blade, which is to better display the AURA SYNC and ARGB lighting effects.
The ROG LOKI 1200W Titanium uses an active PFC + half-bridge LLC resonant + synchronous rectification + DC-DC architecture, which is basically the same as the previous Platinum version of the LOKI power supply, but with different materials, in order to meet the needs of higher power rating and higher conversion efficiency. The module interface PCB is an in-line design, using all Japanese capacitors and a large number of solid-state capacitors as output filters, and the internal space is fully utilized.
The power supply has a complete EMI circuitry, the NTC is located next to the two main capacitors with independent relays, both main capacitors are Rubycon products, and the specifications are 1 x 420V/360μF/105°C with 1 x 420V/550μF/ The 105°C combination, the equivalent total capacity is 910μF, which can meet the requirements of 1200W rated power, and the biggest change compared to the platinum version of the LOKI series is that the dual rectifier bridge at the front end of the PFC is changed to a single rectifier bridge with a switch array, and the rear is equipped with independent PCB and heat sink to further reduce input loss.
The ROG Thermal Solution cooling module is shared by two PFC switches, one PFC diode, and two main switches, with the PFC controller and resonant controller sharing CM6502UHHX and CM6901X respectively, while the +12V synchronous rectifier circuit is located on the back of the PCB with an auxiliary heatsink on the front of the PCB, which is also directly connected to the main transformer to enhance current transmission and further reduce losses, and +5V and +The 3.3V adopts a DC-DC design, shares the PCB with the fan control module, and uses solid-state capacitors as the output filter, and a large number of solid-state capacitors on the module interface for output filtering, and the overall material is very solid.
ROG LOKI洛基1200W Titanium电源用料规格如下:
Static/dynamic load with ATX 3 verification
We perform a 230V input balancing load test and ripple test at 120% rated power of the participating power supply, and the results of this test are not included in the calculation of the super energy index, but are simply used to observe the power margin of the power supply.
After the ROG LOKI 1200W Titanium power supply is overloaded to 120% power, i.e. 1440W, the output voltage of each channel is still maintained at the normal level, and the conversion efficiency changes are also within the normal range. The OPP over-power protection point is measured to be 1780W, which is equivalent to 148.3% of the rated power, and the reserved power space is relatively sufficient. The input power of 0A at no load is 3.791W, and there is no significant difference between the output voltage of each channel and the load voltage.
In terms of dynamic loads, whether it's 10kHz high frequency or low frequency 50Hz, the ROG LOKI 1200W Titanium power supply outputs can control the peak voltage well, and the overall performance is trustworthy.
In terms of ATX 3 specification verification, the most important parameters in the industry are the conversion efficiency of 2% light-load output, and the peak power performance under 120%, 160%, 180%, and 200% instantaneous dynamic output. It has been determined that the conversion efficiency of the ROG LOKI 1200W Titanium power supply can reach 75% at 115V and 230V input voltages at 2% light load, that is, 24W output, and the dynamic peak power test has also passed, which can basically determine that this power supply has the relevant qualities of ATX 3.
PS: Overload to 120% power is required for the review, we do not recommend gamers to overload the power supply, if you really need a higher output power, please use a product with a higher power rating.
Voltage stability
The ROG LOKI 1200W Titanium power supply can control the voltage deviation of +12V, +5V and +3.3V within 1%, and it also has excellent performance in terms of load regulation, with +12V regulation within 1%, and +5V and +3.3V regulation at the level of 1% to 1.5%.
Conversion efficiency
ROG LOKI 1200W Titanium is an 80Plus Titanium certified power supply, which has a conversion efficiency of 89% at 50W output, 91% at 100W, 93% at half load, 92% at full load, 94% at 94%, and 93% at the overall average efficiency in a 230V input environment. Under 115V input, the output range from 100W to 1200W can maintain more than 90% conversion efficiency, with the highest conversion efficiency exceeding 93% and full load efficiency exceeding 90%.
We also measured the conversion efficiency according to the 80Plus load requirements, and from the test results, the actual conversion efficiency of the ROG LOKI 1200W Titanium power supply can be higher than the 80Plus Titanium certification requirements under the corresponding test requirements, so it does have the ability to pass the 80Plus Titanium certification, and the conversion efficiency performance is very good.
Output ripple
Ripple and noise are AC components that are mixed in the DC output of the power supply, and if you observe it with an oscilloscope, you will see a slight fluctuation of the voltage up and down, like water ripples, so it is called ripple. According to Intel ATX 3 requirements, the output ripple of +12V, +5V, and +3.3V and the Vp-p (peak-to-peak) of noise must not exceed 120mV, 50mV, and 50mV, respectively. We use a digital oscilloscope at 20MHz analog bandwidth to connect the decoupling capacitor to the measurement point of the jig board according to Intel specifications, and measure the output ripple at full load and overload to 120% power, and use the ripple peak at low frequency as the scoring benchmark.
ROG LOKI 1200W Titanium power supply at 100% full load at +12V, +5V, +3.3V low-frequency ripple of 24mV, 11mV, and 9mV, overload to 120%, that is, 1440W, the power output ripple is slightly increased to 29mV, 15mV, and 14mV, the change amplitude is within the normal range, which shows that its ripple suppression is relatively good.
Cross loads
Cross-load test projectWe developed a 1200W power supply cross-load chart in accordance with the requirements of the Intel ATX 3 and SSI EPS12V 2.92 power supply design guidelines.
It is worth noting that we did not copy the design specifications as they were, but only selected the four test points that are more meaningful, namely the lower left, upper left, upper right and lower right corners of the cross load box.
The significance of these four points is as follows:
Lower left corner (point A): the minimum load of the whole machine;
Upper left corner (point B): maximum load of auxiliary circuit, minimum load of 12V, such as when multiple HDDs are started at the same time;
Upper right corner (point C): maximum load of auxiliary circuit, full load of the whole machine;
Bottom right (point D): 12V maximum load, auxiliary minimum load, e.g. when running a 3D game with a single SSD;
The X coordinate of the test point represents the total output power of +12V, and the Y coordinate represents the sum of the output power of +5V and +3.3V.
The cross-load test is consistent with the previous uniform load test, with the voltage deviating from the rated value as little as possible, and the allowable value of each deviation rate is ±5%.
The ROG LOKI 1200W Titanium uses a DC-to-DC design on the +5V and +3.3V outputs, which is advantageous in cross-load (pull deviation test), and basically the voltage deviation trend of the three outputs is the same in different load environments, which is very good.
Hold time
Hold-up time is the time that the voltage output value falls out of the range by 5% after a power supply is powered off, and we measure the hold time of +12V, +5V, and Power-OK (Power-Good) signals.
The SSI EPS12V 2.92 server power supply design guide requires that the output voltage hold time should be greater than 18ms at 75% load and the hold time of Power-OK signals should be greater than 17ms, while in the ATX 3 power supply design guide, the hold time requirements for each output voltage should be more than 12ms at 100% load and more than 11ms for Power-OK signals.
Power-OK keeps 17ms means that the computer can continue to run without shutdown or restart in the face of a power-down situation within 17ms, and the voltage of each channel is maintained for 18ms or longer, in order to make emergency treatment for each hardware when a power-down occurs, such as the head homing of the mechanical hard disk and the power-down protection of the SSD.
The hold time of the ROG LOKI 1200W Titanium power supply is measured at 75% load (900W DC output) and 100% load (1200W DC output).
At 75% load, the ROG LOKI 1200W Titanium power supply has a +12V hold time of 31ms, +5V and +.3.V of 32.3ms and 32.7ms, and a Power-OK hold time of 26.2ms, all of which are up to standard and sufficient headroom, and is equally good at 100% load, with +12V/+5V/+3.3V hold times of 21.3ms, 25.2ms and 25.5ms, while the Power-OK hold time is 19.6ms, which is quite a margin compared to the ATX 3 specifications.
Cooling fan speed
The ASUS ROG LOKI Titanium 1200W Titanium power supply supports the 0 dB Fan Smart Start-Stop function, which automatically stops the fan at low temperatures and low loads. According to our tests, thanks to the high-spec ROG custom heatsink, the power supply does not start running at a low speed until the output power reaches 600W, starting at 600RPM, and then increasing with the increase in output power, reaching 1630RPM at full load.
ROG LOKI洛基1200W Titanium电源点评
According to our current scoring criteria, the ASUS ROG LOKI 1200W Titanium Power Supply has a regular performance super index of 92.14 points, and the ATX 3 specification super energy index score of 95.05 points, both of which are top-notch performances, in line with the power supply's own flagship positioning.
Although the ROG LOKI 1200W Titanium is an SFX-L specification, its performance is still in the forefront of the ATX power supply category, with excellent performance in all aspects such as conversion efficiency, voltage stability, output ripple, and hold-up time, with 0 dB FAN Smart Fan Shutdown technology also ensures a balance between noise and heat dissipation, and the standard two 12V-2x6 ports can support 600W output power, which makes the ROG LOKI 1200W Titanium power supply highly adaptable to the platform.
Power Mini Ladder (Full Power Ladder Leaderboard)
The ROG Loki 1200W Titanium Power Supply is currently priced at RMB 2,249 and comes with a 10-year warranty. In terms of absolute price, it is not low, but it is indeed a lot lower than psychological expectations, after all, the outstanding performance and the blessing of the ROG brand, so the price of 2249 yuan is actually considered ROG's "conscience price", which will be an ideal choice for gamers with sufficient budget and need a compact flagship platform.
The ROG LOKI 1200W Titanium is the best in the SFX-L power supply due to its outstanding appearance and performance, 80Plus Titanium certification, AURA Sync, affordable price, and reliable warranty.
√ Pros:
- 80Plus Titanium Certified
- Excellent output ripple control
- The output voltage is stable
- Keep plenty of time
- Supports 0 dB FAN fan intelligent stoppage
- Support AURA SYNC
- Provide two 600W 12V-2x6 power supply interfaces
- Pricing is advantageous in the ROG lineup
X Cons:
- No significant drawbacks