PSU Question regarding Shuttle...

GuruJockStrap

GuruJockStrap

GuruJockStrap

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Got a Shuttle SB65G2 arriving soon.

Ok, its not the latest and greatest but basically I'm downsizing my system. Don't play games on my PC (XBOX 360 for that now) so the plan is to reduce the size of the thing.

I'll be installing inside the SB65G2:

P4 3GHz Northwood
2 x 512MB OCZ PC3500EB
1 Maxtor MaxLine III 250GB SATA HD
DVD Burner
Floppy Drive
Sound Card
6800GT

Noticed the size of the PSU is 220W and was wondering if it'll be enough to power it all without any problems?
 
Saw it for £100 :D

Thats interesting to know about the PSU.

I do like my silence and plan on replacing the 80mm with something quieter but a noisy PSU could proove to be a problem.

Suppose I'll see what its like and if its above my noise threshold I'll just purchase the 250W PC40 Silent X PSU.
 
The 220W is an Alchemy (sp?) PSU and is different to the 250W Silent X one.

From what I've read, the 250W PSU is noticably quiet with a rated 32dBA at full load.

Its £48 though! :eek:

So I'm going to see what the supplied PSU is like before deciding.
 
Mat100, can you do me a massive favour?

Have a look at the rear fan on the 250w PSU and tell me what the manufacturer of the fan is.

Just built my Shuttle rig and I'm finding it a bit noisy, with this Silent X 250w PSU the probable culprit.

I've replaced the 80mm Sunon Fan with a Nexus one (1500RPM, 17dBA. These are virtually silent) and I've slowed down the fan speed of my 6800GT default cooler to 25%. Even at 25% is still a little too loud. I knew that already as it was running in my silent desktop rig for a day and it was clearly heard.

So I opened the Shuttle and stopped the VGA fan. To my horror I still heard an audiable noise. It was the Silent X 250W PSU!

Looked at the rear PSU fan and it was made by none other than Delta!! :eek:

Is it the same with yours?

The default 220W PSU that came with the unit has different fans but I swapped the PSU's straight away during the build, so I have no idea what it sounds like.

Also, are the PSU speeds controlled by the BIOS in anyway?

I've set my CPU fan to full (at full speed the Nexus fan is silent anyway) so I was wondering if this had an effect on the PSU fans?
 
No way am I putting that default 80mm fan on high! My ears have just about recovered after I swapped them out. This Nexus fan is staying right where it is.

What I'm going to do is buy some quieter 40mm fans, open up the PSU and replace the Delta's with them.

A lot of people have done this succesfully and it made a massive difference.

I'll make sure not to get too quiet (slow spinning) fans otherwise the PSU will overheat. Get me mate to do the modification as he's an electrical engineer and good with things like this.

Don't game on the Shuttle box and really only use it for web, email, work etc, so the PSU doesn't get very stressed.
 
Thats excellent to hear.:)

My fear was that those high RPM Deltas were inside that PSU for a reason and that swapping them for lower RPM fans would cause the PSU to overheat.

Once the fans are swapped it should slash the noise by half.

Fans are 2 x 40mm NMB-MAT fans that push 5CFM at 20dBA. Beauty of these is that the chipset is extremely low noise, so no whinning hopefully. Specs look a bit pap but unlike a lot of other manufacturers, its spot on.

Last noise source for me to eliminate would be the 6800GT cooler.

With the fan speed reduced to 25%, I still find it noisy and I can't go any lower.

Will probably end up looking for a quieter, alternative card of comparative performance.
 
peetee said:
6800gt performance, quiet, fit inside a shuttle? isnt that what dreams are made of?
Click to expand...

It will happen. Can't stand noise so will make damn sure of that.

Actually, the HD situation is a bit of a worry.

My Maxtor 250GB Maxline III is currently at 48oC!!! :eek:
 
My HD is sandwiched between the bottom of the drive bay cage and a floppy drive.

Hardly ever use the floppy drive so I might try and remove it and see what the temps are like then. But due to the lack of airflow in the case, I can't see a dramatic improvement occuring.

No idea what the ATI coolers are like. Last ATI card I had was a 9800 Pro over a year ago.

Once I've swapped the PSU fans over and I can't stand the noise of the 6800GT reference cooler at 25% fan speed, I'll probably look into getting an ATI X800GTO, Pro, or XL. Will need to hear some peoples opinions on noise levels though.
 
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