PRIME 650 W Titanium

Amazing Micro Tolerance Load Regulation technology ensures that the Seasonic PRIME 650 Titanium power supply will produce clean power at all times. Should there ever be a problem with the AC input power, this unit’s prolonged hold-up time will give ample buffer to prevent instabilities in the system or, in case of a power shortage, let the operating system store essential data. Seasonic’s latest fan control design allows this unit to operate in fanless mode up to 45 % system load, to delight customers who are looking for a quiet power supply for their everyday usage.

Learn more about PRIME

COD: SSR-650TD Active PFC F3 Categorie: ,

80 PLUS® Titanium

The PRIME Titanium Series achieves the highest level of 80 PLUS® Titanium certification on the market with its 94 % efficiency at 50 % system load.

Fluid Dyanamic Fan Bearing

High performance Fluid Dynamic Bearing (FDB) fans are designed to take advantage of the impact absorbance effects of oil. They are extremely reliable and generate considerably less operating noise and heat than ball bearing fans. The lubrication of the bearing surface reduces friction and vibration and therefore lowers overall power consumption. Due to the effortless, quieter rotations and its robust construction, this reliable fan technology also greatly increases the lifespan of the fan.

How it works

When the fan shaft rotates, high pressure oil drifts along the grooves of the bearing sleeve to generate a thin layer of lubrication between the bearing faces. As the speed increases, so does dynamic oil pressure and the shaft is lifted from the bearing to create smooth, effortless rotations. The herringbone shape of the groves helps to efficiently channel the lubricant and avert leakage.
The following illustration depicts the main characteristics of the FDB fans:


Premium Hybrid Fan Control

Seasonic’s vast experience in designing the most silent and efficient power supplies on the market was translated into the development of Hybrid Mode; a state-of-the-art fan control that enables users to keep the overall fan noise at the lowest possible level.

Power Supply Sound

The Seasonic PRIME Series is designed with very favorable level of acoustics and it uses carefully selected components and innovative circuit design to minimize sound output. Beyond our rigorous internal tests, the power supply also went through external testing with the most popular graphics cards to ensure that the sound at all loads would be kept at the lowest possible level. The chart compares the sound level of the Seasonic PRIME power supply to other ambient sounds.

fab chart

Micro Tolerance Load Regulation

Seasonic’s latest design keeps the output voltage within a very tight range, achieving under 0.5 % load regulation. This impressive electrical performance and stability makes this power supply an ideal choice for high-performance systems.

Extended Hold-up Time (30 ms)

Improved circuit design and high-quality components have greatly increased the hold-up time measured under 100 % load, from an industry standard of 16 ms to above 30 ms. This substantial improvement means that even under unstable input current conditions the power supply will continue to output stable and precise current to ensure smooth operations.

Super Low Ripple Noise (20 mV)

Seasonic’s continued commitment to excellent analog power supply design has suppressed ripple noise to fall well below the current industry average of 20 mV.

Cable-free Connection Design

Seasonic’s engineers have implemented a new design feature, where instead of cables; the back panel and the PCB (Printed Circuit Board) are connected by a copper plate. This breakthrough solution not only lowers the chance of production errors during manual insertion but it also improves output power quality.

10 Years Warranty

Our commitment to superior Seasonic quality.

Specifications are subject to change without prior notice.

Technical Specifications
Form FactorIntel ATX 12 V
Dimensions150 mm (W) x 170 mm (L) x 86 mm (H)
Fan InformationFan Size135 mm
Fan ControlPremium Hybrid Fan Control
Fan BearingFluid Dynamic Bearing
Life Expectancy50,000 hours at 40 °C, 15 % - 65 % RH
Cable InformationModularityFully Modular
Cable typeFlat black cables
Electrical FeaturesOperating Temperature0 - 50 °C
MTBF @ 25 °C, excl. fan150,000 hours
AC InputFull Range
ProtectionOPP, OVP, UVP, OCP, OTP, SCP
Safety and EnvironmentalSafety and EMCcTUVus, TUV, CB, CCC, BSMI, EAC
Environmental ComplianceEnergy Star, RoHS, WEEE, ErP Lot 6, REACH
Warranty12 Years
Power Output
AC InputVoltage: 100 V - 240 V
Current: 8.5- 4 A
Frequency: 50 Hz - 60 Hz
DC OutputRail+3.3 V+5 V+12 V-12 V+5 VSB
Maximum Power20 A20 A54 A0.3 A3 A
100 W648 W3.6 W15 W
Total continuous power650 W

Specifications may change without prior notice.

ConnectorConnector countCable countCable
Main Power (24/20 pins)11
CPU (8/4 pins)22
PCIe (8/6 pins)44

Specifications may change without prior notice.


Download datasheet


TWEAKPC.DE | Elite Hardware

November 08, 2016

“Insgesamt hat sich Seasonic mit dem Prime wieder eine Stufe nach oben gearbeitet und eine neue Referenz gesetzt, an der sich andere Hersteller nun messen müssen. So gehört das Seasonic Prime Titanium dann auch klar zur aktuellen Hardware-Elite.”

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Jonny Guru | Recommended

October 31, 2016

“..the Prime 650W model managed to do something I thought was impossible – improve on the mind blowing regulation I had with my 850W unit.”

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ginjfo | Performance

October 11, 2016

“La Prime Titanium 650 Watts fait partie des meilleures alimentations du marché. Facturée 200 , elle a pour elle de beaux arguments avec un rendement diablement efficace, deux modes de refroidissement dont du semi-fanless pertinent et des tensions stables. Tout ceci saccompagne dun bundle riche, dune gestion 100 modulaire des câbles et dune garantie de 10 ans. Il est juste dommage quun design rond soit proposé pour lATX 204 broches.”

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Nordic Hardware | Recommanded

November 08, 2016

“Spänningsregleringen är i toppklass och rippelvärdena hålls på en riktigt låg nivå. Inuti nätaggregatet finns det ingenting att klaga på, alla komponenter är av mycket hög kvalitet. Som pricken över i har Seasonic förtroende att ge Prime-serien en garanti på hela 10 år.”

(Read More) | Editor’s Choice

September 14, 2016

“Prime är ett flaggskepp i ordets rätta bemärkelse, där allt ifrån spänningsreglering till rippelvärden håller absolut toppklass. Detsamma kan även sägas om enhetens verkningsgrad, som ligger på rekordhög nivå, och långt innanför sin 80 Plus Titanium-certifiering. Den höga verkningsgraden skapar även perfekta förutsättningar för ett tyst och svalt aggregat, där de minimala förlusterna vid spänningsomvandlingen gör att fläkten knappt behöver snurra under belastning.”

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Tom’s Hardware | Editors’ Choice

September 08, 2016

“The new Seasonic Titanium platform is awesome The 650 W Prime model offers amazing performance in all areas and super high efficiency. Hands down this is the best 650 W unit money can buy today and on top of that it is dead silent, even under worst case scenarios.”

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KitGuru | Must Have

August 24, 2016

“Seasonic have spared no expense in the design of the Titanium Prime. They have created a cable free connection design with a copper plate connecting the main PCB to the back panel for increased reliability and enhanced performance. They have adopted high grade Nippon Chemi Con 105c rated capacitors in the primary stage, with 105c rated capacitors also incorporated into the secondary stage.”

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Nexthardware | 5 Stars

August 03, 2016

“Le prestazioni elettriche, sia ben chiaro, sono da ritenersi quanto di meglio possa offrire attualmente il mercato per la fascia di appartenenza ed i 10 anni di garanzia testimoniano quanto Seasonic abbia lavorato per offrire agli acquirenti delle unità instancabili, capaci di funzionare stabilmente al massimo anche in ambienti molto caldi, addirittura fino alla soglia dei 50 C.”

(Read More) | Ultimate

July 21, 2016

“Seasonics voedingen vormden lange tijd de top van de markt als het op kwaliteit aankwam, maar door de inhaalslag die de concurrentie heeft gemaakt, kon het bestaande assortiment zich minder goed op dat vlak onderscheiden. Met de Prime Titanium-serie is de fabrikant weer volledig bij de tijd. Het heeft bij de nieuwe reeks goed geluisterd naar de feedback van reviewers en consumenten. Dankzij een beter getuned fanprofiel blijven de voedingen ook onder belasting onhoorbaar. Ook de 10 jaar fabrieksgarantie juichen we toe.”

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PRIME 650 W Titanium
PRIME 650 W Titanium
PRIME 650 W Titanium
PRIME 650 W Titanium