Seasonic may not be the largest food brand, but one with a very good reputation. Now supplies are getting better each year, the extra effort to do to continue to stand for quality. Computex made it known therefore to renew almost its entire lineup. The Prime Titanium Seasonic 650W we see today is the first result of this.
The Prime series is staged on the market and consists of three product lines: Gold, Platinum and Titanium, of course, referring to the achieved 80Plus certification. There are variants from 650 to 1,200 watts. By the end of the year there is even a fanless Titanium model with an output of 600 watts on the market.
For now, however, the Prime Titanium top model. Compared to the previous generation high-end power supplies has made some improvements. Seasonic power supplies were not always load moment and the improved noise is therefore one of the main points on which the manufacturer showed us. The hybrid mode, you can switch off as desired using a button on the back, the fan can be up to about 50% of the declared tax stand still at a temperature of 25 degrees Celsius. The temperature rises to 40 degrees, then the fan is running, but up to about 30% do not, in order to prevent the power supply is too hot.
A buffer zone between the active and the passive mode, called hysteresis prevents the fan constantly on and off around the boundary temperature. The fan is, moreover, a 135mm-copy of Hong Hua, which makes use of an FDB-bearing.
Seasonic left at CES us all proud to see the inside of the Prime Titanium 650W, which is characterized by a clean design. There are more connections directly through the circuit board, which really only the fan is connected with a wire. This should benefit the airflow, and therefore the performance and the reliability of the power supply.
On the primary side we find some capacitors from Nippon Chemi-Con. We also see the secondary side, complemented by capacitors of the also Japanese Rubycon. Some smaller capacitors we could not identify.
Under the heading MTLR, which stands for Micro-Tolerance Load Regulation, promises Seasonic on the primary track a maximum voltage drop of 0.5%. That should lead to very tight voltage, regardless of the load. The hold-up time, the time can be a breeding without power without reset, has been improved. Which would now be about 30 ms, more than sufficient for key components to save the current activity.
Finally Seasonic still makes some claims, such that the power supply can operate at an altitude of 5,000 meters. We are happy to inform. It is worth noting the 10 year warranty that Seasonic gives the Prime series, which goes after the Corsair. For nutrition in this price seems a logical move.
The Prime Titanium series thus appear initially three models: the 650W and 750W and 850W now in August. Later this year follow a 1000W model and a fanless 600W version. More affordable 80Plus Platinum versions will follow in September, while the Gold will be new power in October on the market. At the end of the year there in the Focus series also Platinum and Gold power supplies that are modular and where moreover 450W- and 550W versions come.
The number of PEG connectors of the Prime Seasonic 650W Titanium is in line with what we are used to power of this caliber. With four terminals is turning SLI or Crossfire anyway perfectly possible. Only the number of SATA connectors is somewhat limited – not necessarily a disadvantage, but who likes to use as a file server system may be better to take a different diet.
In the picture below you can see that only the ATX cable of a sleeve is provided. The other cables are also carried black and additionally flat, we find a good solution.
The lengths of the various cables from the Seasonic Prime Titanium 650W are average.
A capacity to deliver is actually one that do it the right way is two. The ATX specification requires that voltages must be within 5% to ensure stability. This means that the important 12V-lines may be at least 11.40 and not more than 12.6 volts. For the 5V line we like voltages between 4.75 and 5.25 volts.
The stability of the + 12V rail is excellent and Seasonic is the promise of the Prime Titanium 650W after less than 0.5% voltage drop. At 5 and 3.3 volts, the results are also very good.
The efficiency of a power supply is the percentage of the power consumed from the outlet that is actually passed to the components inside the PC. When the components consume a total of 400 watts, use a system with an 80% efficient power supply 400 / 0.80 = 500 watts of power. The same PC with an 90% efficient power supply has only 400 / 0.90 = 444 watts from the wall outlet. That could care less potential in the current account, but also affects other areas. It lost power after all is (a little after, for rotating the fan) as reflected by the food reprocessed heat. The more efficient the power supply, the cooler which remains the less cooling is required and the longer the expected life.
The Prime Seasonic 650W Titanium is the most efficient power in its class with distance. If we all ever watch we tested power supplies only the Super Flower Leadex Titanium 1600W still just a bit more efficient, but it has that feed primarily due to its great power: with a load of for example 300 watts the Seasonic is by far the most efficient . Compared to the popular Corsair RMX and the platinum precursor Seasonic falls themselves that the efficiency remains fairly constant at a high level.
How about at low load? We do like written tests at low loads of 22.5, 50 and 100 watts, modeled on a real system based on an Intel Core i7 4770K Haswell processor, a Gigabyte GA-Z87X-UD3H motherboard, two Corsair Vengeance Pro memory modules, a OCZ Vertex 4 SSD and a CPU cooler. The 22.5 watt test is roughly equivalent to the idle consumption of this system, the 50 watt test is modeled after a situation where one CPU core is fully charged and the 100 watt test to a situation in which all cores are fully loaded.
Also in this test Seasonic sets unsurpassed performance down: 81.4% to 22.5 watt load is really excellent. Virtually alone picoPSU are even more effective at such low powers – the Cooler Master V550 also excelled in this test and even made a slightly better result but is obviously not in the charts because it is a power supply with a different power. Also at the other taxes Seasonic claims the chart.
A more efficient food contributes to a lower electricity bill. Perhaps even more important that a diet when the PC is off – and thus no tax – not yet consume much power. Therefore, we always do a test without load. We do this both on the power if turned off the power. When a power supply does not have, of course, we can not make a distinction on / off-switch, and the results are identical.
Negligible consumption and Seasonic 650W Prime Titanium still turned on and 0 watts when the switch to ‘off’: so we see that much.
A power supply is supposed to deliver tight voltages of 3.3, 5 and 12 volts. But he who delivered tensions analyzed with an oscilloscope, sees this voltage always fluctuates a bit. Is this fluctuation low frequency, we speak in jargon about ripple, it then we speak about high frequency noise (noise). It is an arbitrary difference and in all cases, the smaller these fluctuations, the more stable the power supply. Certainly overclockers who push the boundaries of what chips just cope, benefit from a minimal ripple.
With the help of an oscilloscope, we have measured the maximum ripple. The Vpp (voltage peak-peak) values indicate the difference between the highest measured voltages. If the 12 volt line has a ripple of 50 mVpp means that it fluctuates between 11.975 and 12.025 volts.
Values around 50 mVpp are excellent and make sure you make you even have to worry a lot about overclocking stability. Values below about 75 mVpp are also fine. Is a power supply is far above, that’s really a bummer.
It is the RMX-power supplies from Corsair excel in this, but Seasonic still puts down excellent performances with the Prime Titanium 650W. The promised ripple below 20 mVpp is widely acknowledged.
Finally the noise. That we measured in a soundproof box 10 centimeters away from three taxes: approximately 100W, approximately 300W and 500W approx. Mean values around or below 30 dB (A) which is a power supply inaudible is silent. Everything below 35 dB (A) is called silent up there, you start to hear a diet anyway. A measurement of 40 dB (A) or higher you may perceive as clearly audible. Technically, it is every 3 dB (A) a doubling of the noise, but the human ear, each increase of 10 dB (A), where as an approximate doubling.
The power supplies are, of course, semi-passive and low loads, we also measure anything. A weakness of Seasonic power supply to date was to see the strong noise under load, as the older Platinum 660W power supply in the line graph. The manufacturer tended to the fan at a somewhat higher tax directly to run quite hard. This has, however, addressed Seasonic and the sound profile is now almost exactly the same as that of the popular RMX power. That is in our opinion a very good benchmark: even in our 500W test other components will still produce more sound than this food.
Seasonics supplies were for a long time the top of the market when it came to quality, but the catch made by the competition, the existing range could stand less well on that front. The Prime Titanium series, the manufacturer is completely up to date. It has listened to the feedback from reviewers and consumers in the new series. Thanks to a better tuned fanprofiel power supplies remain under load inaudible. The 10-year manufacturer we applaud.
In terms of efficiency Seasonic explains Prime Titanium 650W the bar much higher than was hitherto in this segment. The average efficiency of nearly 93% which we measure is excellent, while we can not otherwise describe the efficiency at low loads than exquisite. There is no single test section in which this power is not performing impressive. One of the few tests that the Taiwanese manufacturer is not immediately takes the lead, the ripple test, but that is more by Corsair strong competition than by Seasonic itself Albury points.
Seasonic Prime Titanium 650W performs in all areas excellent and also goes with a well-deserved Ultimate Product Award home – or as we would say previously, gold with titanium edge. Obviously there for almost fine feeds half the money also for sale, but for the cream of the crop well once you pay extra.