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My new 8800gtx is a nice tight fit in my shuttle....

justinwilkin said:
I know! :eek: How?!!

Mine is just about ok with a 7950gt but I don't think it could take any more :p
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People way over rate the power needed to run a PC.
The GTX will suck around 180W maximum, that leave 160W for the rest of the system giving a 10W margin.

The CPU will only take what? 80W ish as it has a TDP of 92W and that is the maximum theoretical possible draw which will never occur in practice.
Id be suprise if the machine sucked more than 320W in total.
 
Big.Wayne said:
Does it work? What is the PSU in that thing? and how long till it blows up? :eek:
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The PSU a 350watt (two rails of 17A total 34amp)...

I use one them plug in the wall adaptors that tell you how many watts is being drawed..The max i seen on so far is about 280watts..
It's mostly around the 240watt to 250watt when playing games (1920x1200 4AA,16xAF) with a few random peaks to 270watts...
 
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chaparral said:
The PSU a 350watt (two rails of 17A total 34amp)...

I use one them plug in the wall adaptors that tell you how many watts is being drawed..The max i seen on so far is about 280watts..
It's mostly around the 240watt to 250watt when playing games (1920x1200 4AA,16xAF) with a few random peaks to 270watts...
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you're running a GTX on a 350 watt PSU?
That really shows that it seems to be less wattage now and more about how much power you have running over the rails....
*looks at own PSU*
*sighs contentedly*
 
Shuttles are well known to have brilliant PSUs, and combined with the fact that you are never going to have lots of hard disks, DVD drives, and PCI cards in there you can get some great cards in there.

I used to have an athlon xp 2800, 6800 GT, DVD, HD, floppy drive, and about 10 USB devices from my 250W shuttle PSU :eek: :D
 
Cartho said:
you're running a GTX on a 350 watt PSU?
That really shows that it seems to be less wattage now and more about how much power you have running over the rails....
*looks at own PSU*
*sighs contentedly*
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It has been a case of the Ampage you can get throught the 12volt rails ever since external power for gfx cards was introduced.
People these days just seem to drastically over estimate the PSU they need. I see the same on here all the time... people with good 350W PSUs being told that it won't run an 8800GTX.... what utter rubbish, you only have to look at power consumption figures for systems over at Anandtech or wherever to realise that sub 320W is the norm even for high end PCs. Add another 8800 in SLi, a quadcore and a few more hard drives and you could still run on a good 550W PSU.
I saw someones sig on here who had a 1100W PSU for a rig that will probably such less than 300W at peak... it's insane.
 
Nice. :cool:

My Shuttle Sn85G4 has a 250W PSU and I am running:

2Gb memory
X800XT
2 x 160GB SATA Drives
DVD -RW Drive
AMD A64 3200+
A LED fan, TV card and a few USB devices, so I know these PSU are very good. :D
 
Also guys....The 8800gtx maybe much bigger and much faster then a ATI x1900xt-x...But the 8800gtx uses 10watts of power less then a x1900xt-x under full load...and the 8800gtx seems to give out less heat then the x1900xt-x..

And my plug in watt meter showing 280watts being drawed underload,is roughly the same as this test...

http://techreport.com/reviews/2006q4/geforce-8800/index.x?pg=16

power-load.gif
 
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Kamakazie! said:
I see the same on here all the time... people with good 350W PSUs being told that it won't run an 8800GTX.... what utter rubbish
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I can think of a much more polite way of putting that! :)

I know that Shuttle PSU's are good but running a set-up like that on 'any' 350W PSU is asking for trouble, but each to their own. If it runs for more than 3 months I will be 'enlightened' :cool:
 
My car has a 8,500rpm red line, but that doesn't mean I can keep it there for very long.

Running a PSU at 80-90% of it max rated value will reduce it's life. Shuttle PSU's are respected for high quality, but I will be interested to see if it still works in a years time. Plus, PSU's loose efficiency when pushed towards there limits - a 500w unit will draw less power than a 300w unit when when running 250w worth of components.
 
555BUK said:
My car has a 8,500rpm red line, but that doesn't mean I can keep it there for very long.

Running a PSU at 80-90% of it max rated value will reduce it's life. Shuttle PSU's are respected for high quality, but I will be interested to see if it still works in a years time. Plus, PSU's loose efficiency when pushed towards there limits - a 500w unit will draw less power than a 300w unit when when running 250w worth of components.
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Might want to rethink that post.

Car engine != psu

You cant just say a 500w psu will draw less than a 300w psu with a 250w load, each brand has a different efficiency ratings, eg. what you just said would certainly not apply to a 500w qtec with a 250w load.

Car engines are not built to be held at redline all the time, good psu's are made to cope within the max load they are rated at for their rated lifetime.
 
555BUK said:
Running a PSU at 80-90% of it max rated value will reduce it's life. Shuttle PSU's are respected for high quality, but I will be interested to see if it still works in a years time. Plus, PSU's loose efficiency when pushed towards there limits - a 500w unit will draw less power than a 300w unit when when running 250w worth of components.
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Actually efficiency tends to increase with load, for example a 300w seasonic has higher efficiency when putting out the whole 300w than it does when supplying 65w.
 
So Shuttle PSUs are just far more efficent than others? Everywhere i go, i read articles saying that the 8800GTX requires 500W or something stupidly high yet Shuttles seem to be able to take anything - even though even today the "top spec" ones seem to be 400W.

Heard the term "railings" being used, something to do with it?
 
Raikiri said:
They just under rate them and make them very well. Very few systems will actually use more than 350w.
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So the need for anything more is only really needed for things like SLi and running more than 2 HDDs?
 
SideWinder said:
So the need for anything more is only really needed for things like SLi and running more than 2 HDDs?
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8800GTX SLi or x1900xt crossfire are the only set ups that will use over 400w, a single card system with a lot a HDs might use over 350w. Obviously heavily overclocking can increase this, but even then I think you would struggle to use 600w with 8800GTX SLi, quad core overclocked and a load of HDs.

The problem is a lot of manufacturers list the peak wattage or spread the amps out so that they are effectively useless. Having 30amp on the 3v and 40 on the 5v isn't much use but it looks good wattage wise.
 
Raikiri said:
Actually efficiency tends to increase with load, for example a 300w seasonic has higher efficiency when putting out the whole 300w than it does when supplying 65w.
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Up until 20 or 30% load, PSU's tend to be very inefficient because a certain ammount of power is required to drive the tranformer/caps. From 30 to 80% you will get increasing rates of efficiency (partly due to the watering down of initial load inefficiencies, and also because components are operating at optimal design levels). Above that heat and component tolerences WILL reduce overall efficiency and life expectancy. My information is taken from various PSU reviews, and having a Degree in Electrical Engineering.
 
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