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i3 + GTX260 = watts? - Page 3

post #21 of 28
Quote:
Originally Posted by Phaedrus2129 View Post
300W is on the low side. A very high quality 350W might do the job. A Corsair CX430 or Antec EA380D would do the job for sure.



A GTX260 is like a 170W card, ~140W during typical gaming. A bit more with overclocks. CPU is a good 70W, and the rest of the system maybe another 50W. Close to 300W right there during peak consumption, which is too close to the limits of a 300W, especially since most 300Ws are low on the +12V side.


Contrary to public belief, I do endorse headroom. Just not 2x your peak wattage headroom.
He did say there will be no overclocking, or heavy gaming. I still think 300w will do it in these circumstances.
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post #22 of 28
Quote:
Originally Posted by Phaedrus2129 View Post
300W is on the low side. A very high quality 350W might do the job. A Corsair CX430 or Antec EA380D would do the job for sure.



A GTX260 is like a 170W card, ~140W during typical gaming. A bit more with overclocks. CPU is a good 70W, and the rest of the system maybe another 50W. Close to 300W right there during peak consumption, which is too close to the limits of a 300W, especially since most 300Ws are low on the +12V side.


Contrary to public belief, I do endorse headroom. Just not 2x your peak wattage headroom.
A very good explanation!

I like to clarify two points:

1-The 12v line is the most important one & the total wattage on 12v rail(s) is somewhat less than nominal capacity.for example a 500W PS may offer only 430W on 12v rails.
My 240-250 W estimate on 12v line has nothing to do with efficiency!

2-The op states:"...I doubt that "Your mobo & other components should use roughly around 50W" maaaaybe 20w or less..."
Now 20W is a gross underestimate.For reference,50-60 W is a much better guess

Ofcourse Phaedrus2129 can explain both points better than me
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post #23 of 28
Hm, Silverstone bundles an FSP GHS 300W unit. 264W on the +12V. It might handle it on its own. I'd be more comfortable with a 350-400W. You don't really need a 450W, but with the 300W your GPU and CPU will be taking up 89% of your +12V capacity when you stress the system. It's tight. It will probably work, at least as long as you don't run lots of stress tests, but it's a lot tighter than I like.
post #24 of 28
Quote:
Originally Posted by Phaedrus2129 View Post
Hm, Silverstone bundles an FSP GHS 300W unit. 264W on the +12V. It might handle it on its own. I'd be more comfortable with a 300W. You don't really need a 450W, but with the 300W your GPU and CPU will be taking up 89% of your +12V capacity when you stress the system. It's tight. It will probably work, at least as long as you don't run lots of stress tests, but it's a lot tighter than I like.
For 20$ more, he gets a 450W PSU and a black interior case.
Not to mention, the 300W PSU doesn't come with a dedicated 6pin for the PSU.
But for 20$ bucks and having peace of mind? I wouldn't hesitate on that.
post #25 of 28
Quote:
Originally Posted by mbudden View Post
For 20$ more, he gets a 450W PSU and a black interior case.
I'd hit it for the black, LOL.

Quote:
Originally Posted by mbudden View Post
Not to mention, the 300W PSU doesn't come with a dedicated 6pin for the PSU.
You mean 6-pin PCIe plug? Yes it does have one. The FSP branded version doesn't, but the Silverstone branded one does.
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post #26 of 28
Quote:
Originally Posted by Zap View Post
I'd hit it for the black, LOL.

You mean 6-pin PCIe plug? Yes it does have one. The FSP branded version doesn't, but the Silverstone branded one does.
I would too, 20$? Pfft.
And yeah, I meant the PCIe plug.
That's what I meant, the 300W doesn't.
But the 450W does.
post #27 of 28
Quote:
Originally Posted by mbudden View Post
And yeah, I meant the PCIe plug.
That's what I meant, the 300W doesn't.
But the 450W does.
The FSP made Silverstone 300W does have a single 6-pin PCIe plug. At least, the one included with the SG05 I purchased did. If you purchase a stand-alone FSP branded one, it will not have the plug.

Heck, Silverstone even says so in their specs.

SG05
1 x 6-pin PCI-E connector (400mm)
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post #28 of 28
Thread Starter 
Quote:
Originally Posted by Zap View Post
The FSP made Silverstone 300W does have a single 6-pin PCIe plug. At least, the one included with the SG05 I purchased did. If you purchase a stand-alone FSP branded one, it will not have the plug.

Heck, Silverstone even says so in their specs.

SG05
1 x 6-pin PCI-E connector (400mm)
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