I just registered to the SFF Forum so I can join this conversation. I'm trying to decide between the SX700-LPT and the PE-750 as well and I had an email exchange with Baron, Lian Li's representative in the US, about the warranty and the fan of the PE-750 that I though could interest everybody here. This is the summery of the exchange:
My original email
I'm trying to decide between the Lian Li PE-750 and the Silverstone
SX700-LPT PSUs. On paper, your PSU is better (750w >> 700w !!!), but I still
have 2 issues that I need to figure out:
1) Warranty - I've been building computers for a long time now and, mostly,
I've used Corsair PSUs, which usually come with a 7-10 years warranty. While
I don't expect a company that's new to the PSU market to give that long of a
warranty period I must confess that a 1 year warranty for a PSU does make me
a bit nervous (Silverstone give 3 years warranty for their PSU). Any chance
we'll be able to extend the warranty period somehow?
2) The fan - The Silverstone SX700-LPT's fan has a semi-fanless mod, which
means it doesn't start spinning until the load on the PSU is around 30%.
Does your fan has such a mode or is it a simple PWM fan that adjusts its
rpms base on the load and temp. Any chance we can get more data (maybe a
graph on your PSU's web page) that shows the correlation between PSU loading
and fan rpm ?
Baron's reply to my email
(1)The Warranty is 2 years .
(2)The fan will start to spin until the load on the PSU is around 30%. However,
once it start to ship , it won't stop even the load is under 30%.
My reply to Baron's reply
Thanks for responding to my email so fast. Just to clarify and verify those
2 issues before I finally pull the trigger and order this PSU from Newegg:
(1)Are you absolutely sure the warranty for the PE-750 is 2 years?
Because on the Newegg website it definitely says 1 year. Also, in the online
review by James Schell from SFF Network
scroll all the way to the bottom and you’ll see it in the second bullet point) he also
mentions that the warranty is 1 year.
(2)Did you mean to say “The fan will [not] start to spin until the load
on the PSU is around 30%. However , once it start to ship [spin] , it won't
stop even [if] the load is under 30% .”?
Baron's replay to my reply to his reply
(1)If your PSU have problem during the 2 years warranty, please e-mail us. We
will take care of it .
(2)The psu fan will not spin until the load of PSU is around 30%. Once the fan
start to spin , it won’t stop even the load is under 30% again. However, there
is a chip on the PSU to adjust the fan speed ,and the fan speed change depends
on the PSU load.
So, what do you guys think?