SilverStone Strider Titanium ST80F-TI PSU Review

SilverStone's fresh Strider Titanium line consists of three members with capacities ranging from 600W to 800W. Today we're testing the family's flagship to find out how it fares against the rarefied competition.

80 PLUS Titanium efficiency is becoming more and more popular, and that's definitely a good thing since it pushes prices lower. SilverStone recently added three Titanium-rated products to its portfolio through the Strider Titanium family. We already reviewed the ST60F-TI, which demonstrated high efficiency and tight load regulation, but failed to impress us due to its mediocre ripple suppression.

Since all Strider Titanium models are based on the same platform (provided by Enhance Electronics), we expect similar performance and probably even worse ripple suppression from the ST80F-TI because of its increased capacity. Very high efficiency levels demand minimal energy losses, so compromises have to be made especially in filtering circuits. Inevitably this hurts ripple performance.

Given a cutting-edge design featuring digital control and a bridge-less PFC converter, there is no need to cut corners, especially when it comes to filtering components. Ripple performance doesn't have to be affected, while efficiency can satisfy the Titanium standard's requirements. But that's unfortunately not the case for SilverStone's ST80F-TI. It uses an analog platform with a normal APFC converter, rather than a bridge-less one. 

The ST80F-TI has the same dimensions as its two smaller siblings. As a result, the PSU's power density score is quite high (413W per liter). It employs a modular cabling design that makes installation a breeze, though unfortunately the ST80F-TI suffers from the same design flaw as the other two Titanium Strider units: it doesn't have an on/off switch. We simply cannot understand Enhance's problem with power switches. In the past, this OEM avoided power switches like the plague. Then it forgot that habit for a while. And now it's back, which is shame. We strongly believe that an on/off switch is an essential feature for every PSU. Even when your PC is off, power still flows through the PSU due to the 5VSB rail. The only way to completely remove it is flipping a power switch or unplugging the AC power cord.

Specifications

SilverStone's suggested price is lofty, as we've come to expect from Titanium-rated PSUs. If you don't need the highest possible efficiency, check out Platinum- or Gold-rated models instead. They offer much higher performance-per-dollar ratios.

The maximum operating temperature at which this unit can deliver its full power for prolonged periods is limited to 40 °C, while the ATX spec recommends at least 50 °C. Thankfully, over-temperature protection (OTP) is present with a triggering point set at around 47 °C ambient, so it should step in if there's problem. The relatively small fan uses a fluid-dynamic bearing (FDB) for increased lifetime, and there is no semi-passive mode, which we find strange from a high-efficiency PSU. Finally, the five-year warranty is ample, even if competing models like EVGA's SuperNOVA 850 T2 double that figure.

Power Specifications

Rail3.3V5V12V5VSB-12V
Max. PowerAmps2222662.50.3
Watts12079212.53.6
Total Max. Power (W)800 (850 Peak)

There is only one +12V rail, and it can deliver the PSU's full power on its own. This is typical of all modern PSUs, which utilize DC-DC converters for generating the minor rails. Speaking of the 5V and 3.3V rails, their combined capacity should be enough for a contemporary system. Finally, the 5VSB rail has the typical amperage for today's standards.

Cables And Connectors

Modular Cables
DescriptionCable CountConnector Count (Total)
ATX connector 20+4 pin (560mm)11
4+4 pin EPS12V (760mm)22
6+2 pin PCIe (560mm)44
SATA (600mm+140mm+140mm+140mm)312
Four-pin Molex (610mm+150mm+150mm)13
FDD Adapter (+110mm)11

The ST80F-TI has an extra EPS cable and four more SATA connectors than SilverStone's ST60F-TI. Normally we'd expect six PCIe connectors coming from a high-end 800W PSU, but the truth is that four of them are fine in most cases. Twelve SATA connectors should also be plenty, though we can't say the same for the limited number of four-pin Molex connectors. We'd like to see one or two more. Thankfully the single Berg connector comes in an adapter and isn't fixed onto a cable. Finally, the 24-pin ATX, PCIe, and EPS connectors use thicker 16-gauge wires, while the others are built using common 18-gauge wires.

Power Distribution

Since this PSU features a single +12V rail, we do not have anything to say about its power distribution.

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  • JQB45
    Tier-3 and I think I am being generous. I never thought I would see a Titanium rated unit with such poor performance. I base my decision on the 12V ripple and hold up time.
  • gdmaclew
    I'm not surprised that silverstone opted not to supply an on-off switch. In fact, I can see no reason why this brand keeps getting the high ratings it enjoys.
    I bought one 3 years ago to replace a defective PC Power and cooling PSU.
    the Silverstone 80 Plus gold (Strider S series) lasted just 9 months before it started to produce erratic voltage levels. Sent back for a replacement and that one lasted 15 months. I now have that unit's replacement but it is now a spare to my Corsir RX750.
    At least they honored their warranty...twice.
  • maxwellmelon
    http://silverstonetek.com/product.php?pid=648&area=en

    they say ripple on 12 volt spec is 120mv so they don't even say themselves that its going to have a ripple under 100 which the writer of this article was expecting. why expect something that the manufacture of this psu didn't say it would do
  • Andi lim
    Too little Elco and Solid Capacitors on secondary side cause poor ripple and hol up time. Must set new standart, Platinum and Titanium Level should not exceed 50mV on all output rail.