graphic card upgrade

hi,
im using a 6 year old hp p6140 in
it comes with a core2 duo e 7400 2.8ghz processor ,3gb ddr2 ram, a ms 7525 bostonL motherboard a 7200 rpm hdd(all of this dosent consume much power right?) and a 250 w psu
now i want to upgrade my gpu to a gtx series and ive narrowed down on the gtx650 as it is a great card and consumes less power(64 w right?)...im aware that bottleneck issues might be there but i only want to play the latest games at decent fps...so i want to ask whether my psu will be able to sustain the gtx 650?...i'd prefer not upgrading anything else guys...

thanks people....

 

What brand is the psu ?

 

its a bestec atx 250 12z...thats what it says....

 

thank you so much for the detailed assessment macboatmaster...see id already visited the nvidia site ...there it said that a geforce 210 requires a 300w psu...but ive been running that for 3 years now on my 250w psu without any problems crashes or anything whatsoever....even on flipkart they mention separately if the gpu requires a specific power input--for eg the gtx 750 shows a must requirement of 400w...but the gtx 650 dosent show any separate requirement...so since youre the expert i want your verdict....can i run the gpu on 250w without damaging my hardware?

another thing...whats with the single slot(geforce 210) and dual width(gtx 650) thing?if the 210 fits a gtx 650 will also fit yeah?
also about the six pin thing...(i might sound like an amateur please forgive me)...flipkart ships the zotac gtx 650 with a dual molex 6 pin adapter...so that must imply that it can run on a psu without one right...like mine?

thank you so much for your help so far and the help you're willing to provide....

 

thanks for giving me a hang of this...i know these decisions are based on a lot of variables so saying a yes or no without vacillation is nigh impossible....so thank you for your verdict...ill go for the gtx 650...hopefully it will get along with my hardware....

 

frank,
at the outset id like you to check this out---http://support.hp.com/us-en/document/c01815020(just to tell you im not delusional)

and then the product number is ky645aa#acj and there's a something titled 's/n' which is ina933008f

please do get back...id like to get some advice...on the said matter

 

frank,
you've just overshot by several notches....i never said i wanted to build a gaming desktop...that's a ludicrous proposition to even think of much less act on...i just said i wanted a graphic card update and wanted to ask you whether my existing hardware is gonna support it...so as a trusted advisor if you can answer to that then id be much obliged...if not then...well then you've made your point...
thank you

 

macboatmaster,
that is,in all honesty,what i wanted to know and you have been extremely helpful ...post no 12 was directed towards flavalle not you...i think i mentioned 'frank' atop the post (and id like to add that ac3,bf3,grid2 and a host of other games have run comfortably-24 fps+-on my pc...even bf4 at low settings...but thats beside the point)....in case I wasnt clear...thank you for your advice and i really appreciate it...believe me i do...ill check those clearance levels and get back to you

thank you,once again for your help

 

macboatmaster,


ive assumed that by capacitors you meant the rounded black things with silver heads and i didn't exactly understand the clearance part...Ive listed here the distance of various components from one another but if you meant the the height or anything of the capacitors you can tell me and ill check again
pci slot to capacitor-0.7cm
capacitor to capacitor(the two to the right immediately below the slot)-1cm
capacitor to capacitor(near one in the right end to the one towards the left end right below the pci slot)-8cm
pci to black rectangular chip-1.2cm(the chip with markings to the right and just below the marking n1996)
and pci to back slot is around 4.4 cm
i would love to analyse anything else you'd like me to check or look up....

thank you