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Power Consumption Question

Last response: in Systems
January 10, 2011 7:03:37 PM

hye all

i just want to know. does my psu support my whole system if i change my graphic card to Sapphire HD5850 Toxic
i know HD5850 toxic recommended psu is 500w

my spec

intel core 2 duo e7500
gigabyte g31s2L
Kingston HyperX DDR2 800mhz
gigabyte gts250 512mb
Cooler Master Extreme 460W power plus

the whole system i guess use less 460w rite? what if i change from gts250 to 5850??
the psu still brandnew, less a month age.... do i have to change psu?? man this really depress me :D 

thanks in advance
a b B Homebuilt system
January 10, 2011 7:10:59 PM

you can try it...if it powers itself off during heavy gaming, you will know why....
January 10, 2011 7:12:26 PM

but doest the gaming will be lagg? i mean slow?
Related resources
a b B Homebuilt system
January 10, 2011 7:57:49 PM

The 5850 is rated as having a max TDP of about 150W, which is only slightly higher than the GTS 250 you already have in there. The Cooler Master Extreme 460W unit isnt a good quality unit, and i would have recommended getting a different unit originally that would have allowed for some more upgrade room but it should be able to handle a 5850 fine, just dont run furmark and prime95 to stress test it or you may push it too hard.
January 11, 2011 9:00:25 AM

Dougie Fresh said:
According to this:, your PSU has only 1 x 6-pin PCI-e connector.

According to this: (see System Requirements tab), you need 1 x 6-pin PCI-e and 1 x 8-pin PCI-e to use this card.

It doesn't seem you have all the connectors you need on your PSU.

so i have to connect both pin??
if i only connect 1 x 6 pin does the card running optimal?
January 11, 2011 10:05:48 AM

ive got new info though, what if i use molex pcie 2 to 6 pin something like that? doesnt it comes with graphic ???

and other things, ive read about same issues of mine, some people said if the psu is new, it can give enough power to the 5850
January 11, 2011 7:23:27 PM

You'd have to get a 2 x 4-pin molex to 8-pin PCI-e adapter. There is still no guarantee it'll work. The 6-pin connection you already have needs to deliver 75W and the 8-pin 150W according to the specs for the video card.
January 11, 2011 11:12:18 PM

150W? 150w + 75W = 225W..still i have 235W....guys feed me with power usage of my overall system...sorry noob here
a b B Homebuilt system
January 17, 2011 3:12:39 PM

the video card and whatever you have running that takes 75 watts are not the only items in your computer that require power. Everything from the ram, drives, etc that is in your system will use some power even when idle. WHen running at speed your computer may have all the ram dimms, the processor and accompanying fans, the gpu and its fans, your cd/dvd drive the ethernet connector and who knows what all else running. All of these take power and you only ahve a limited ammount on a 460w psu not to mention the fact you need to connect all pwoer connectors on your card to properly power the gpu and all its fans so it does not overheat. try using a calculator like this and plug in what parts you have connected laong with all the details of your computer and it will better explain what your power needs are.