Asus rog strix 750w gold review in Spanish (full analysis)

More than a year ago, ASUS ROG surprised us all with the presentation of its first power supplies in a decade, the very high-end Thor series that we were lucky to analyze. Now, the brand expands its catalog with the new ASUS ROG Strix 750W sources, which together with her and her sisters we have lower cost models with 80 Plus Gold certification, which we will analyze today.

Again, ASUS has chosen Seasonic as the manufacturer of its power supplies. In this review we will see how far they have been able to go. Intrigued? Let's go with the review!

ASUS ROG Strix 750W Source Tech Specs

ASUS ROG Strix 750W external review

We start, as always, by unboxing the power supply. The box highlights its most characteristic points: 10-year warranty, 80 Plus Gold certificate, exclusive ROG heatsinks, aesthetic customization capabilities, etc…

Despite the fact that the box is quite small, the source is perfectly protected thanks to a foam that covers it and prevents us from having problems during transport.

In addition to the source itself, the brand includes a great wiring bag and various accessories: two magnetic stickers to change the aesthetics of the PSU, a beautiful ROG logo also magnetic, 3 ROG stickers to install on the front, velcro strips To organize the wiring, nylon cable ties, a user manual and instructions on where to place the aesthetic accessories (now we will see its effect). Later we will talk about all the wiring included in the bag.

We take out the source of its foam and protective cover, and we find a design that follows the line set by its older sister ROG THOR, that is, an 'aggressive' gaming character that you may or may not like, but which undoubtedly belongs to everyone ROG brand products.

The THOR took care of the aesthetics to the millimeter, and this is not far behind, although we appreciate a significant loss: this STRIX Gold lacks the OLED screen with the real-time consumption that characterized the top-of-the-range model of ASUS. This is logical given the much lower price range in which the source that we have in our hands today moves.

The semi-passive mode that this source has is deactivatable. When the button is pushed in, the semi-passive mode turns off and the fan always stays on. Later we will analyze their behavior.

Here we show you those customization capabilities that the included accessories allow us, specifically thanks to the different magnetic stickers, which allow us to give it a more personal touch. Anyway, we understand that in most cases the external aesthetics of the source is not something too relevant.

As expected, this is a 100% modular source, we will analyze the quality and distribution of the wiring in a moment.

ASUS ROG Strix 750W Cable Management

We start by talking about the type of cabling used, which in this case are meshed cables for the ATX, CPU, and PCIe connectors, and flat cables for SATA and Molex. We do not enter the discussion of "meshed vs. flat" since they are personal choices, but we do want to highlight two points in particular:

• For the price of this source (considering the rest of the features), we expected the same individually sheathed cables (commonly called “sleeving”) that we found in the THOR. ATX, CPU and PCIe cables have capacitors, this is something that we consider negative due to its little importance in performance and the headaches that it causes during assembly. However, as with other sources made by Seasonic, these cables are much less rigid and annoying than other competitors.

Regarding the number of connectors, everything is as expected, perhaps you could include some SATA connectors or divide the ones in 3 strips to offer greater mounting possibilities, but the truth is that everything is fine.

From now on, in addition to indicating the lengths of the wiring, we compare them with the latest sources tested on the web to be able to put the data in context.

As you can see, this is a source with cables longer than normal. In the case of ATX and PCIe, the ROG Strix is ​​among the top positions in our comparison, while the CPU cables are tremendously longer than normal, reaching no less than 1 meter in length.

The truth is that this last aspect is not very relevant for most boxes, with a normal length we can mount it without problems even in very large Full Towers such as the Raijintek Zofos Evo, although we see a use for it in a specific box, the ROG Strix Helios of the own brand, since to completely hide the CPU cable it needs to be of a great length. Anyway, it is something that can be solved simply with quality extensions.

Regarding the SATA and Molex, we still do not include a comparison ( as you know they are distributed in several wired connectors so we still do not have a good way to compare them ), but their length is more than reasonable.

ASUS ROG Strix 750W internal review

Again, ASUS chooses Seasonic as its partner to manufacture this range of power supplies. The internal platform used is the Focus Plus, already seen on many occasions in the form of "rebrands" from other brands. In this case, it is slightly modified to accommodate ROG's own heatsinks, but remains the same as the original design in all other respects.

A platform of a power supply is the base design that manufacturers like CWT have for different brands.

If two sources of different brands have the same manufacturer and platform, then their internal design will be very similar, with exactly the same base, and differences in more concrete aspects such as capacitors, fan, wiring, etc.

This is a modern and quality platform, although Seasonic updated it just a few months / weeks ago for the Focus GX, which does not need capacitors in the cables and whose behavior with high-consumption graphics cards is optimized. We would have liked this to be used as a base from the first moment.

The primary filtering is, as we expected, 4 Y capacitors, 2 X capacitors and two coils, there are never any big surprises in this regard.

As expected we have complete protection against dangerous current spikes that occur at the start of the source (while the capacitors are charging) thanks to an NTC thermistor and a relay (the latter responsible for a characteristic “click” sound).

The primary capacitor is a high quality Japanese Hitachi with a capacity of 560uF and rating at 105ºC. With this ability on this platform, an excellent hold-up time is obtained, so the choice has been good.

On the secondary side, we have a combination of Nippon Chemi-Con electrolytic capacitors from the KZE, KY and W series (expected) and quite a few solid capacitors (of extreme durability), mainly from Nichicon (also called FPCAP). All Japanese.

We have no downside to weld quality, as always with Seasonic. Here we can find the supervisory circuit that is a Weltrend WT7527V. Unfortunately, the OCP protection is not implemented in 12V, only in 3.3V and 5V, this is normal in mono-rail sources and a characteristic of multi-rail ( several 12V rails ).

Except in aspects such as the fan or heatsinks (in the photo we see the improved ROG heatsinks, there is one more for the secondary side), there is an exact and unchanged application of the Focus Plus platform.

We finish with the fan. It is an Everflow FB14025BH, for which we have not been able to know much information, but we know that it has a double ball bearing. This type of bearing is reliable and durable, but is usually louder than usual.

Test bench and performance tests

We have performed consumption and fan speed tests. To do this, we have been helped by the following team:

TESTING BENCH
Processor:	AMD Ryzen 7 1700 (OC)
Base plate:	MSI X370 Xpower Gaming Titanium.
Memory:	16GB DDR4
Heatsink	Corsair H100i Platinum RGB
HDD	Samsung 850 EVO SSD. Seagate Barracuda HDD
Graphic card	Gigabyte R9 390
Reference Power Supply	Thermaltake Toughpower GF1 650W

For consumption we have a Brennenstuhl meter of proven reliability and a laser tachometer for fan speed.

In order to maintain the reliability of the tests, especially the consumer one (the most sensitive), and taking into account the changing nature of the loads on a device, the sources shown here have been tested the same day and in the same situations, so we always retest the source that we use as a reference, so that the results are comparable within the same review. Between different reviews there may be variations due to this so they are not comparable.

In addition, in each review the test conditions can change, we generally try to apply more severe overclocks and therefore increase the load on the PSUs.

Consumption

As was absolutely expected, the consumption of the source is in line with that of other models with 80 Plus Gold efficiency.

Fan speed and semi-passive mode experience

Let's see the fan behavior analysis with the two possible possibilities: semi-passive mode (“Hybrid mode”) activated and deactivated.

Hybrid fan mode “ON” (front button WITHOUT pressing)

As with most semi-passive sources on the market, the semi-passive mode of this ROG Strix 750W source is non-digital, so its control is simple, based on no more than internal operating temperature, and has no hysteresis setting. You can know what this implies here:

Explanation of the concept of hysteresis

Hysteresis is a scientific concept that is very important, for example, to study magnetism. In this case we are going to move away from that world and make a simple explanation applicable to the control of a fan in a power supply.

These graphics are entirely invented number and interval dramatizations for illustrative purposes.

When there is no hysteresis setting on a semi-passive source, the temperature required to turn on your fan is the same as to turn it off. Therefore, if we are (for example) in a game session and the source reaches the necessary temperature point, its fan will turn on. If the load is maintained or reduced slightly, the source is expected to drop below this point in temperature, causing the fan to turn off. It is also foreseeable that soon afterwards the temperature will reach the ignition point again.

This behavior we describe very easily causes fan on and off loops that are harmful to the fan , reducing the durability benefits of the fan that a semi-passive mode should offer, while the source is “half-cooled” and the loudness is “reduced to half” too.

When the semi-passive mode is controlled more intelligently and a hysteresis setting is entered (especially if there is a digital microcontroller in charge of regulating this mode), the point at which the fan is turned on is not the same as it takes to Turn off. That is, an example with the graph above: we force the source to turn on the fan at 60ºC, but it will not turn off until the source reduces its temperature to 55ºC. In this way, we achieve several things:

1. Getting the source fan to continuously keep the fan on for as long as necessary, which is much more positive in every way than the loops described above. Avoid loud spikes in these ignition loops, versus continuous operation at acceptable revs. Offer much better cooling to the power supply.

Unfortunately, the majority of power supplies on the market with semi-passive modes include a simple one, basically due to its low production cost, ease of implementation, and the little that most reviewers seem to care about this aspect. In any case, with sources that offer long warranty periods and good efficiency, the semi-passive mode type should not be a big concern.

In both short gaming sessions and sequences lasting several hours in a row, we have observed with our test team that the fan on and off loops are constantly repeated, every X seconds, and extend until the end of the game session. This is what should be avoided and that is solved with hysteresis. It is certainly the behavior we expected because we have already observed it in other sources that use this Seasonic platform.

All in all, it should be noted that the source has a 10-year warranty period during which the fan should not fail, in addition to the fact that ball bearings are much less sensitive to on and off cycles than the fluid bearings that we usually use. see on PSU.

Hybrid fan mode “OFF” (front button pressed)

With the semi-passive mode deactivated, the fan starts operating at 800 revolutions per minute, something that seems slightly elevated considering its 135mm diameter. However, both in game sessions lasting several hours and in the sequence of tests carried out, the fan always stays around 800-850rpm.

Fan loudness

Regarding the loudness of the fan, the fact is that the use of a double ball bearing and a somewhat high initial rpm makes it noisier than we expected. From the beginning the engine makes an appearance, something that should not happen in idle.

We believe that the advantage of ROG heatsinks is not being used to improve loudness, given the great ease with which the semi-passive mode is activated (looped) , and the higher-than-expected rpm of the active mode.

Final words and conclusion on ASUS ROG Strix 750W font

ASUS continues to expand its catalog of power supplies and we find a model that follows the THOR line, continues to be of high quality, the result of a successful collaboration with Seasonic, with a special interest in aesthetics, improved dissipation and a 10-year warranty.

A differential aspect that we have found in this source is the great length of its wiring, something that users of large complete towers will appreciate. However, we were slightly disappointed by the loudness of this source, as we expected improvements in semi-passive mode and quieter operation for active mode.

The price of this power supply is 160 euros, 140 for the 650W model. We believe that they are too high prices, which place the source competing with higher-level models, with greater efficiency (Platinum) and even higher in performance, sound, etc. The true competition range of this Strix is ​​at least 20-40 euros below.

We recommend reading our updated guide to the best power supplies by price.

In summary, the ASUS ROG Strix 750W is a quality source and an interesting launch, but unfortunately not very competitive, since we believe that its differentiating aspects (aesthetics, length of wiring and ROG heatsinks) do not justify its price, the which we hope will drop in the coming months.

Advantage

• Well-maintained external fountain aesthetics Full accessory set with external customization capabilities High internal quality backed by 10 year warranty Durable fan Long wiring with 2 CPU cables measuring 1 meter, ideal for towers like ROG Strix Helios need such long lengths of this cable to be able to organize it correctly. Despite carrying capacitors, the wiring is not as rigid as that of other competitors.

Disadvantages

• Operation somewhat louder than expected and semi-passive mode with very simple control. Very high price, it is on par with top-end competitors. Neat aesthetics at the source, but not on the cables. We expected sleeving for this price.Interior based on an internal platform (Focus) that already has a successor (Focus GX).

The Professional Review team awards him the gold medal.

ASUS ROG Strix 750W

INTERNAL QUALITY - 95%

SOUND - 80%

WIRING MANAGEMENT - 90%

PROTECTION SYSTEMS - 85%

PRICE - 70%

84%