"I have a geforce 7600gs in it and it cant play oblivion or fear well because the psu is too weak for the card. "
How do conclude it's the PS that's the problem? What are you symptoms?
On the other hand, emachines has a reputation of using PSs in their computers that tend to be faulty or fail more often than the average, or the PSs just don't live up to the stated capacity claims.
t3265
Uses the AU31 motherboard:
http://www.emachine-upgraders.info/...
FIC AU31 (K7M-NF18G) Tech info:
http://www.emachine-upgraders.info/...
See the first note here regarding installing a graphics card:
http://www.emachine-upgraders.info/...
If you want more info about the mboard, check out the FIC web sites.
cases and case manuals (T3265 is not listed, but your case might be):
http://www.emachine-upgraders.info/...
Emachines computers use a standard PS/2 sized PSU if the case is not a small tower or desktop, etc. - close to 3 3/8" high, 5" wide (on the external fan side, 5 1/2" deep (86 x 150 x 140mm) If it is in a smaller case, it is a proprietary microATX size. In both cases, the wiring to the motherboard Main connecvrtor is standard ATX.
This general system and case manual shows the power supply for your model in several places, including pages 173 and 174 of the pdf:
http://downloads.emachines.com/user...
It appears to be a standard PS/2 size.
According to this - it IS a standard ATX size.
http://www.power-on.com/atx12vem300...
If you hold your cursor over the main power connector, it lists the wiring and wiring colors.
Also see Connector notes 1 - there are two additional wires.
The wiring of that connector is a bit oddball - position 18 , -5volts, has no wire, and position 20 has a 5 volt sense wire some standard ATX PS's don't have. Otherwise the wiring is standard ATX.
On the other hand, it being a FIC mboard, it is extremely unlikely FIC uses oddball wiring at the main connector, and a standard ATX PS should work fine.
If no wire is needed to be connected to position 18 on the mboard, it doesn't matter if the wire is there or not because there is no circuit to it on the mboard.
If you would rather use the specified PS, you are limited to a 300 watt one on that site, but it will be better quality than the one originally in the computer. Or you could try other power supply web sites that list direct replacements or upgrades for the power supply - the emachines model number or the emachines part number on the power supply can be useful to search with.
