Hi, I bought a SX500-LG and installed it in my ncase M1 this past Monday. I am very happy as it is completely silent; however, after a couple of hours gaming I noticed the side of my case (by the PSU) was fairly warm. I opened the case and noticed the PSU fan was not spinning and the back of the PSU was warm (side opposite the fan). The other sides were relatively cool. After continued gaming temp stay pretty much the same. Basically, it is warm enough to notice and be concerned, but not hot enough to shut down my PC immediately.
I have monitored the past few days and figured out the heat is not coming from the PSU but from the video card. The video card is blowing a lot of hot air into the small gap between the PSU and case side panel. The other sides of the PSU are much cooler as they see some good air flow. There is a 120mm fan mounted to the side of the case blowing air onto the PSU and I have a Noctua NH-D9L on my CPU exhausting air out the back of the case. BTW, the PSU is installed with the fan facing the inside of the case so the 120mm case fan is blowing on the PSU fan.
I know the fan on the PSU is set to turn on if the internal sensor registers 41°C or above, but I would think it would turn on at some point (I have a i7-6700k and GTX 970). The fan has not spun once since installed.
Anyone have any thoughts on this before I RMA the power supply?
If you have very good airflow blowing into the PSU, there is a good chance its own fan doesn't need to turn on as SX500-LG is 100% temperature based. Did you try stopping the 120mm case fan to see if the PSU fan would turn on then?Thought I'd give an update. Been using my PC all week and still have not seen the fan on the PSU move once. Decided to RMA. Definitely sucks as I don't have another PSU...computer is idle until I get the replacement. Here is hoping the replacement doesn't have any issues!
I'm a recent owner of a SX500-LG myself (Europe Amazon.de), and I've been experiencing similar noise issue. The rattling/ticking noise at intermediary loads (when the fan isn't completely off, but isn't running full speed either) i can live with, but intermittently, i get some heavy coil whine like on this recording. (gets worse around 0:20)
Is that normal behavior ? If not should I go through RMA in order to get a default-free unit or should I just ship it back to amazon (it's still within the 30 day free return window) ?
If it is, do you guys recommend a silent alternative ? (I'm quite noise sensitive, I have an almost completely passive build). By the way, any news on the sx7000-LPT ?
These are the noises produced when the voltage is raised by fan controller near PSU fan's starting threshold. As discussed previously, this is unavoidable with a temperature based fan controller as used in the SX500-LG. However, every PSU may exhibit this noise slightly differently depending on the environment it is used in and also due to product variances.
Thanks for sharing your experience and being patient with us throughout the process. We will continue to improve and speed up the communications. In your circumstance, the misunderstanding from our distributor was due to their personnel change.A quick update to say that my new SX500-LG arrived from PCCaseGear and has been running non-stop for the past three days. I am very pleased to say that it is as quiet as the proverbial mouse and exhibits none of the noises that have been documented throughout this thread. While I would be the first to admit it is highly likely that the vast majority of SX500-LG owners are very happy with their PSU, it does appear that an abnormally high number (perhaps 2-5%?) are having problems and, like me, end up on threads like these trying to sort things out. Until this "abnormally high number" is fixed, I would like to suggest that perhaps Silverstone should accept some responsibility for the problem by giving their Customers the benefit of the doubt rather than have them jump through hoops like I have had to do over the past month.
Obviously I can't reveal exact sales and return numbers, but the RMA percentage aren't anywhere near that high. We are normally very concerned when anything approaches 1% and the SX500-LG was never there. This thread on Hardforum, however has now become the place to go for customers worldwide to share their SX500-LG troubles so it does contain what appears to be higher percentage of complaints.How did you come to figure 2-5% are having issues? How many do they sell each month? How many are getting RMAs for fan/coil noise? Where could you find this information?
With that said, we are still monitoring the situation and trying to build a case to possibly release an alternate version of SX500-LG without semi-fanless function. I got our PSU product manager to side with me last year and brought up the idea of removing semi-fanless function with executives but was unsuccessful because we simply had so few returns/complaints to make the case. Semi-fanless in many regions is considered a positive asset so we will probably go at it again this year but instead of trying to change SX500-LG, we'll push to release another version. So for current SX500-LG owners here, what would you like to see changed or updated besides semi-fanless?