what makes the graphic card capacitor to blow up?

i own an ati x1650xt for about a year now. suddenly few days ago, i heard some small exploding sound at my PC during playing kane&lynch. when i open the casing and check each component i found out that 4 of my graphic card capacitor are broken or blown up. i dont know how thats happen.. can any1 give ideas or thought how this happen.. my instinct tell me its because of my PSU. My PSU only generate 300Watt. Im using Abit AB9 Pro with C2D 6300 and 2 gigs of rams. 1 dvd burner and 180Gigs hardisk.. any1 can comfirm this or is there any other factor that can cause this to happen such as overheat? i didnt OC anything for your information...

im still using it now but i didnt play any games since that happen... actually after i heard that small exploding sound.. my windows doesnt hang or blue screen appeared...i manage to shutdown safely and still can use it till now posting this reply...

Errrr ummm you're not suppose to let the smoke and the pop out of the electronic components!!!@ Yeah, definitely take the card out of the PC and don't use it. If you continue to use it, you're likely to fry the slot it's in.

yup... however, even good quality caps will fail with age. Heat (both external and internally generated) are cap killers.

^Agreed. The point is NEVER get a cheap PSU. (Unless you plan to replace it in a few days/weeks)

ok now i change my psu to 460 watt using Gigabyte brand.. im planning to buy nvidia 8800 gt 512mb.. is the PSU give enough juice for the graphic card or i should buy different model like ati hd 2900 xt?

my psu output +12v1 rail give 14.0amps, +12v2 rail give 15.0amps, +5v give 30.0amps +3.3 give 30.0amps, +5vsb 2.0amps and -12v 0.8 amps.

sorry im kinda new to this.. can give example of the calculation and how much amp the 8800gt and hd2900 xt use?

8800GT requirements taken from newegg
425W PCI Express-compliant system power supply with a combined 12V current rating of 28A or more*
One 6-pin PCI Express supplementary power connector -or-
Two 4-pin Molex supplementary power connectors
*Minimum system power requirement based on a standard PC configured with an Intel Core2 Extreme X6800 processor

And here is a product page for a 2900xt
http://www.diamondmm.com/2900XT1GPE.php

check to see if the capacitor was put in backwards

actually the GC capacitor is just behind the copper heatsink... so maybe the card become overheat and damage the capacitor.... but strange it happen after 1 year....

Edit: heres the image of my graphic card. yellow circle is the capacitor that broke

http://i265.photobucket.com/albums [...] to0334.jpg

Ha ha ha ha ha exploding capacitors, I have recently sent out a video card, that slowly committed suicide by blowing up it's caps over a period of 3 months. The last one that popped killed the video card. Right after the warranty was out, lol. I sent it back anyways to see if the card maker will fix it.
Capacitors go bad for a variety of reasons, but the ones that go in a 6 month to 18 month time frame are the cheaply made ones for the most part. The other things that will kill them are over voltage and age.
I recall a very large batch of bad caps that came out of Taiwan a few years back. Industrial espionage caused the stolen formula from a Japanese company to end up at a Taiwanese company but they missed the final ingredient that was on another page that was not stolen. So this Taiwanese company made millions of bad caps the went into all kinds of electronics, including a motherboard I used to have. These for the most part did not pop but swell and or leak. Changing the electrical properties of the circuit in which they were installed and ultimately failure.
It seems for what ever reason we may be having another period of bad caps, again.
RMA the video card they may fix it for you.

ok so now i know im not the only 1 having this type of problem... i will try to RMA it if possible.. btw..are the story about taiwanese stole the formula from japanese true?

the way i see it is if you're gonna get a good gpu/rig setup, then why try and play the cheap as possible psu game if ya know there are stories out there that a el-cheapo will knock out your entire investment?

pay close attention to the +12v rail amps AND how many +12v rails there are. when you do this you will quickly find yourself in the 600w PSU range! i'm not doggin ya! i just want you to see it for what it is: you're gonna spend at least 100bones for a good PSU! good luck.

its written at the sticker outside the psu

heres a screenshot:

http://i265.photobucket.com/albums [...] to0335.jpg