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For higher or worse, the quantity of energy required by high tier PC gaming programs has been on the rise over the previous couple of years. Lead largely by a leap in video card energy consumption – gone are the times the place a flagship video card would draw simply 250 Watts – the required and really useful wattages for high-end programs have began encroaching on the form of energy that twin GPU programs required barely half a decade in the past. So though twin GPU configurations themselves have all however died, their excessive energy necessities have been changed with much more energy-hungry video playing cards and CPUs.

All of the whereas this has been happening, it is created one thing of an regular aspect advantage of twin GPU gaming programs going the best way of the dodo: you will get true flagship-level efficiency in an impressively small system. Small type issue PCs are after all hardly new, however beforehand there was at all times some trade-off within the complete quantity of stuff you possibly can, effectively, stuff in such a system. A second video card, one other 2.5-inch SSD, and many others. The demise of twin GPU programs has finished away with that problem, however now it is created one other problem: powering a contemporary dense, excessive wattage system.

For a typical ATX system this is not an issue, as there are myriads of merchandise out there and customers can simply discover very highly effective and dependable PSUs at affordable costs. Nonetheless, this rapidly turns into a difficulty with small type issue programs, the place the provision of excessive output PSUs is comparatively low. And this brings us into the realm of extra specialty type components.

Over the previous couple of years, a number of of the bigger PSU producers launched compact SFX and SFX-L PSUs that have been designed to match the facility necessities of highly effective gaming programs. With energy output scores reaching 700 Watts or extra, a few of them might even energy flagship-level PC gaming programs. This was fairly the feat contemplating that discovering a top quality SFX PSU even for a mainstream gaming system was a really troublesome process till a couple of years in the past.

However, for some clients, even 700 Watts is not going to be sufficient. Particularly as you begin mixing over into the high-end workstation area – suppose a number of Radeon Professional workstation playing cards right here – much more energy is required. So to fill that position SilverStone has rolled out a 1000 Watt SFX-L type issue PSU, the SX1000.

Already well-known for merchandise like their SFX design-pushing SX800-LTI 800W PSU, the corporate has gone again to the drafting board in an effort do one higher. We didn't anticipate that the corporate would simply handle to squeeze much more energy out of an SFX PSU, and but almost three years after the discharge of the SX800, right here we're: SilverStone has an SFX-L PSU with the scary output of 1 kW. This presently is probably the most highly effective SFX-L PSU available on the market, so after all we'd like to check out it to see the way it stacks up.

Energy specs ( Rated @ 40 °C )
AC INPUT	100 - 240 VAC, 50 - 60 Hz
RAIL	+3.3V	+5V	+12V	+5Vsb	-12V
MAX OUTPUT	25A	25A	83.3A	3A	0.3A
	125W		999.6W	15W	3.6W
TOTAL	1000W

 

Packaging and Bundle

SilverStone provides the SX1000 into a reasonably large cardboard field that might simply match an everyday ATX unit in it. The field could be very sturdy and we discovered the PSU sandwiched between thick polystyrene foam items inside, offering ample transport safety. The art work is comparatively easy, with a blue and gold visible theme, and largely restricted to photos of the unit itself.

Contained in the field, we discovered a good bundle for a very good PSU. Except for the handbook and datasheet, there's a typical AC energy cable, a couple of cable ties, a couple of plain cable straps, 4 black thumbscrews, and 4 black M3.5 mounting screws. Unusually, SilverStone doesn't provide an SFX-to-ATX adapter with the SX1000. The corporate used to take action prior to now with fashions that had nearly half the facility output of the SX1000, making it a noticeable and unusual departure, particularly as these highly effective models are way more more likely to discover their approach into ATX-compliant circumstances than low-output fashions.

The SX1000 is a completely modular PSU, that means that each cable may be indifferent, together with the 24-pin ATX cable. Making the 24-pin ATX cable removable normally doesn't make any sensible sense, nevertheless it does on this case: permitting the person can substitute the quick 12” ATX cable with an extended model if the PSU goes to be put in inside an ATX case. With none exception, all the cables are “flat” kind cables, with black wires and black connectors.

SilverStone SX1000
Connector kind	Hardwired	Modular
ATX 24 Pin	-	1
EPS 4+Four Pin	-	2
EPS Eight Pin	-	-
PCI-E 6+2 Pin	-	6
PCI-E Eight Pin	-	-
SATA	-	8
Molex	-	3
Floppy	-	1

The SilverStone SX1000 1 kW PSU

Exterior Look

The SilverStone SX1000 is an SFX-L unit, that means that it's based mostly on the SFX customary however it's 30 mm deeper. Its chassis measures 125 (W) × 63.5 (H) × 130 (D) mm (4.92 x 2.5 x 5.12 inches), which does restrict the compatibility of the PSU, as a number of SFX-compliant circumstances don't present that form of clearance. Nonetheless, circumstances meant to carry SFX PSUs and a number of/outsized video playing cards ought to all be offering sufficient clearance for an SFX-L PSU.

SilverStone isn't an organization that designs visually extravagant merchandise and the SX1000 sticks to that custom, with the designer sticking to a basic all-black design. The chassis is sprayed with satin black paint however most of its floor is roofed by stickers. The stickers on the perimeters of the unit solely show the corporate and product logos, whereas the sticker that covers everything of the unit’s high aspect hosts the fundamental electrical specs and certifications of the unit. On the backside aspect of the unit, we will see the black fan and the finger guard, with a metallic crest that includes the corporate’s emblem masking the fan’s engine.

Regardless of the very cramped area necessities, the designer nonetheless managed to suit an on/off swap subsequent to the AC receptacle. The entrance aspect of the unit is roofed by quite a few cable connectors, together with a sticker that hosts a fundamental legend. All the cable connectors besides these of the ATX cable are coated with plastic protecting caps.

 

Inner Design

A serious benefit of the SFX-L type issue is that it permits for 120 mm followers to be put in, a necessity for the cooling necessities of such a robust unit. Globe provides the low profile 120 mm fan, which is a double ball bearing mannequin with a most velocity of 2400 RPM at 12 Volts. This can be a unusual selection by SilverStone, as the corporate normally prefers to make use of sleeve bearing followers due to their decrease noise output, even for his or her top-tier merchandise.

Though the SX1000 externally reminds us of the older SX800-LTI, they're nothing alike internally. The OEM behind the creation of the PSU stays the identical with Improve Electronics, the corporate behind most of SilverStone’s PSUs. That's the place the similarities finish although, because the SX1000 is predicated on a more moderen, completely different platform.

 

The filtering stage of the SX1000 is barely beefed up, because it begins on the rear of the AC receptacle and continues onto the primary PCB, with 4 Y capacitors, 4 X capacitors, and two filtering inductors. There are two APFC capacitors, equipped by Rubycon, rated at 400 V / 470 μF every. A big filtering inductor sits proper subsequent to them. The heatsinks are moderately fundamental for a PSU with that form of output, with comparatively little mass and floor space. We'd not anticipate to see such heatsinks in ATX models rated above 600 Watts, but the restricted area within the SX1000 requires sure sacrifices. That doesn't imply that the temperatures of the parts ought to skyrocket however does trace using particular very low loss components that may generate minimal quantities of warmth – which are also comparatively expensive.

The first inversion circuit is a confirmed with an LLC resonant full-bridge topology. Eight MOSFETs generate the 12 V rail on the secondary aspect of the unit. The minor rails are being generated by way of DC-to-DC converters. The unusual half right here is that the topologies of the SX1000 are a step up in comparison with the half-bridge topology of the SX800-LTI, but the unit nonetheless didn't obtain an 80Plus Titanium effectivity certification. The capacitors on the secondary aspect are a mixture of electrolytic and solid-state merchandise, with most of them equipped by UniCon. There are a few small Rubycon electrolytic capacitors in there as effectively.