Solution
"Exclusively for 1200/P183/P193
Unique power supply construction compatible with many new Antec cases"

You will need to get a Power Supply that has ATX in the title or description. If you would like to keep it 850W, check out the Corsair Power Supplies, they're beefy and reliable.

CFTait

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Apr 22, 2010
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"Exclusively for 1200/P183/P193
Unique power supply construction compatible with many new Antec cases"

You will need to get a Power Supply that has ATX in the title or description. If you would like to keep it 850W, check out the Corsair Power Supplies, they're beefy and reliable.
 
Solution

antec_rep

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Dec 22, 2008
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Hi Tom Thumb,

The CP-850 will not fit in an Antec 300 regardless of what the motherboard size is. The CP-850 like CFTait has mention is made exclusively for Antec 1200/P183/P193.

I would recommend getting another power supply, maybe a TP-750 from newegg.

TP-750 - $90 After Rebate
http://www.newegg.com/Product/Product.aspx?Item=N82E16817371025&cm_re=Antec_750w-_-17-371-025-_-Product

TP-750 w/blue led fan - $120
http://www.newegg.com/Product/Product.aspx?Item=N82E16817371022&cm_re=Antec_750w-_-17-371-022-_-Product

Antec
 

tom thumb

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Apr 18, 2010
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Actually, I'd rather change the case then the PSU as I haven't bought either yet.

Here's another question, will that PSU fit in a CM 690 mkII?

(btw thanks for your help guys)