FSP and Silverstone PSU Compared in Crossfire Stress Test

Cases & PSU/Power Supplies by geoffrey @ 2007-07-27

We take a look at two high wattage power supplies from companies known for their solid product lines; the Silverstone DA750 model features a single 12v rail and is rated at 750W. The FSP Epsilon has four 12v rails and combined offers up to 900W. We stress test these units in a real world environment with the most power hungry vga cards out there, two ATI HD 2900 XT in Crossfire. Read on to find out if they pass our tests

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Silverstone DA750: inside the box & details

Silverstone DA750: inside the box

Here is what we found inside the black DA750 box:

  • Silverstone DA750 PSU
  • power cable
  • 8pin PCIe lengthening cable
  • tie wraps
  • 4 screws (to tighten the PSU inside your pc housing)
  • manual


Madshrimps (c)



Silverstone DA750: details

On first sight we see that the DA750 comes with a black painted housing, giving this product elegant looks and a strong feeling there is decent quality inside, something we're used too from Silverstone technologies. Modular PSU's might not charm everybody out there though it leaves us with the possibility to further increase airflow inside your pc housing while it may also appear a bit more clean because we can now use only the needed amount of connectors. For cooling purposes, a 120 fan us being used, probable the smartest choice if one wants to combine great cooling capabilities with lower noise production.

Madshrimps (c)


Most area on the backside of our PSU exists out of a grill which increases general airflow through the PSU. We also found a classic AC connector with on/off switch, but besides that nothing fancy has been added.

Madshrimps (c)


On the other side of our PSU we can find the modular plugs. During our testing period they never got me frustrated, great quality thus but a bit too close located to each other. On our picture the PSU is labeled so that you can clearly identify the location of each connector, this sticker isn't found on retail PSU.

Madshrimps (c)


Silverstone's Decathlon DA750 PSU can deliver up to 750W DC power; the most amazing thing is that Silverstone chooses for a single rail 12V line. That's right, only one transformer good for up to 60A!

Madshrimps (c)


An overview of how the connectors look like:

Madshrimps (c)


Inside, the housing has been stacked full with all kind of components, some are really huge which is quite normal if you look at the specs. Smaller components are located at two sides of the PSU, because those were SMD's they have been placed vertical upwards compared to the horizontal main PCB. Silverstone has also added quite some capacitors in order to get some decent AC ripple filtering, one of the most important things for the overclockers among us. Every heatsink is well finished; in fact the whole inside view pleased me, Silverstone again made a very decent construction.

Madshrimps (c)


On to our second product ->
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Comment from MTBF @ 2010/03/10
FORTRON / FSP Power Supply Units are unreliable hardware devices.
Failed just after 784 days of normal use (about 3500 hours only)!.
Comment from jmke @ 2010/03/10
MTBF doesn't guarantee you a minimum life-time expectancy FYI
Comment from MTBF @ 2010/03/10
Yes, 2 years but warranty was over since 1,5 month only.
Comment from jmke @ 2010/03/10
how many FSP PSU do you own?
Comment from MTBF @ 2010/03/10
Just one, Epsilon 700w definitively useless by now also it was properly protected with an UPS.
Such material is normally designed for 100,000 hours.
Comment from jmke @ 2010/03/10
Quote:
Such material is normally designed for 100,000 hours.
no, it has MTBF of 100.000 hours. And MTBF != LifeTime

Quote:
nother common misconception about the MTBF is that it specifies the time (on average) when the probability of failure equals the probability of not having a failure (i.e. a reliability of 50%). This is only true for certain symmetric distributions. In many cases, such as the (non-symmetric) exponential distribution, this is not the case. In particular, for an exponential failure distribution, the probability that an item will fail at or before the MTBF is approximately 0.63 (i.e. the reliability at the MTBF is 37%). For typical distributions with some variance, MTBF only represents a top-level aggregate statistic, and thus is not suitable for predicting specific time to failure, the uncertainty arising from the variability in the time-to-failure distribution.
http://en.wikipedia.org/wiki/Mean_ti...sconcepti ons
you can't decide on experience with ONE sample that a whole range of products is broken/bad.
Comment from MTBF @ 2010/03/10
I agree with you and the above MTBF but when you pay US$200 for a device you don't expect that you should do it again 2 years later... :-)
Especially when the breakdown is obviously the device itself.
Comment from jmke @ 2010/03/10
I've had laptops break down a week after their warranty has expired, sometimes you get the short end of the stick
the other 200 laptops kept working years after their warranty expired.... that's life
Comment from EsaT @ 2010/03/24
Quote:
Originally Posted by jmke View Post
you can't decide on experience with ONE sample that a whole range of products is broken/bad.
Epsilon platform based PSUs commonly show "ripple happiness" from the start (even some advertised PSU specs breaking ATX specification) and FSP uses mostly cheap capacitors avoided by many makers.
So with such product propability of getting that short end of the stick is simply higher.
Comment from ToyTen @ 2010/04/01
I am a lucky owner of an 800w Epsilon PSU then. Since the Geforce 8800GTX and I used those in SLI with a Q600 for more than one year. My PSU is still there.
Not saying at all that problems never occur of course, but it seemed to me that a positive feedback about those PSU's was welcome here, supplying a 5870 and an I7 950 @ 3200Mhz with 4Ghz UCLK, 3 HDD and 6Gigs of memory. Also lots of fan for my water cooling.

 

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