Reviews - ePower Xscale-1200 1200W
Sample Provided by: Epower Technology (By jonny on Fri, Feb-23-2007)

Page 1 -

I was very excited to have an opportunity to look at Topower's newest contribution to the high end power supply market; the Xscale 1200W.

Topower is largely known as an OEM, but ePower gives Topower an opportunity to get their products out onto the market directly.

The 1200W touts many features that would make it seem like the ultimate power supply.  1200W of power, Quad SLI/Crossfire ready including R600 Crossfire ready, multi-Core ready, ATX, BTX, EPS12V, RoHS compliant, Active PFC, 80 Plus.... 80 Plus?  Let's see that logo close up!

ePower specifically is not listed on the 80 Plus site at all.  But Topower is.  Unfortunately, I could not find a 1200W unit under Topower, or under any other listing.  Although I was surprised and impressed that they did have a 1kW unit that made 80 Plus certification.

On the side panel of the box we have more bullet-points.  A 20+4 main ATX connector (why would you need a 1200W PSU if your motherboard only has a 20-pin connector?), EMI protection on the PCI-e cables, 8-pin PCI-e connectors that are backwards compatible with 6-pin video cards, both 4-pin ATX12V and 8-pin EPS12V connectors and 6-pin PCI-e connectors supposedly made specifically for Physics add-on cards.

Another side panel of the box shows the Xscale comes in four flavors.  900W, 1000W, 1100W and the 1200W I have here.  Since the "Xscale 1200W" on the top of the box is a sticker, it's probably safe to assume that the same box is used for all four models.  This may also explain the 80 Plus logo on the box.  The Xscale 1000 on this side panel may be the same as the Topower 1kW listed on the 80 Plus website.

The other side panel of the box has a check list of features.  It lists that the power supply has 12 SATA power leads (WOW!) as well as SATA to Molex adapters.  It states that there are case fan leads and how many of each PCI-e connectors there are. 

They list a "12V turbo switch."  I'm not sure what that is.  The unit does have a split/combine 12V rail switch that I'll play with.  Maybe that's what they are referring to as a "turbo" switch.

One of the features is "Silent Technology."  I can only guess that's the name Topower gives to their fan controller.  They also list that both 80MM fans are ball bearing.  We'll confirm this when the power supply is taken apart.

Opening the box reveals our power supply wrapped in bubble wrap and a plethora of un-sleeved cables.  Yuck!

The parts baggy located deep within the spaghetti of cables contains our AC power cord, five Velcro cable ties in five different fashion colors and four of the SATA to peripheral Molex adapters.

Let's untangle our mess of cables and do a head count...

Type of connector: Xscale-1200
ATX connector 20+4
2 x 2 12V connectors 1
8-pin Xeon/EPS connector 1
6-pin Xeon/AUX connector 0
2 x 3 PCIe 6*
2 x 4 PCIe 2**
5.25" Drive connectors 6
3.5" Drive connectors 2
SATA Drive power connectors 12
Fan only connectors (thermostatically controlled 12V only) 6***

* Two of the 6-pin PCI-e connectors are on their own cable, but two are attached to one cable.
** The 8-pin PCI-e connectors have allow 2-pins to "break away" for use as 6-pin PCI-e.
*** Three of the FAN ONLY connectors are peripheral Molex-type connectors. The other three are 3-pin fan headers.

The unit has a somewhat unique look to it in that they did the titanium finish we're used to seeing on Topower power supplies, and then "brushed" it to give it that stainless steel look.

On the outside end of the power supply we see one 80MM exhaust fan, our AC input, a massive off/on toggle switch and our "split/combine +12V rails" switch.

On the inside of the unit, we have an 80MM intake fan and our DC output cables.

The label for the Xscale-1200 shows both 1100W and 1200W models.  The only real difference between the two seems to be the extra 4A of juice on the +12V rail on the 1200W.


+3.3V +5V +12V1 +12V2 +12V3 +12V4 +12V5 +12V6 -12V +5VSB
30A 30A 20A 20A 20A 20A 20A 20A 0.8A 6A
Max Combined Watts 180W 1008W 9.6W 30W

This unit has SIX, count them, SIX +12V rails.  Figuring out what is powered by what rail is not going to be easy.  The yellow +12V wires do not have color stripes on them and the rail distribution is not documented.  I plan to open the unit to figure out what rails go where.

For now, let's just get to testing...


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