Davidm122 wrote:There's absolutely no way this processor will draw "300 watts on its own". It would burst into flames if it did. The Phenom II X6 1045T has a TDP of 95 watts under load. The other components combined should draw well under 100 watts, so assuming the power supply isn't completely terrible, there should be a fair amount of headroom for a video card upgrade.
A decently powerful modern gaming card shouldn't draw much more than 100 to 150 watts under load (not counting the absolute highest-level cards and multi-GPU monstrosities). An HD 5770 should actually draw less than 100 watts while gaming, so if one of those were added, the total maximum power draw from the system would still likely be under 300 watts.
I'm only curious why something called a "Gaming Desktop" would only have an HD 5450 in it. Why market it for gaming if you're not even going to use a mid-range graphics card? Rather than including 8GB of RAM, most of which won't get touched by current games, they could have cut it down to 4GB and put in a somewhat reasonable card like an HD 5670 instead.
I hate to say that you are wrong, but you are. The TDP is Thermal Design Power. Its the amount of HEAT the CPU puts off, not the amount of energy it draws.
My personal rig is as follows
Asus M4N98TD EVO AM3 mobo
AMD PhenomII x4 955BE @ 3.4
8GB DDR3 Giel ValuRAM @ 1066
2x Nvidia based GTX460 1GB
2x500GB WD HDDs
For my rig
The graphics cards alone are rated at 300w max draw for power(they have 2 6pin plugs each, and this means 150w from the PCI express port, and 75w each for the 6pin plugs.). The AMD phenom 955BE is a 125wTDP CPU, but it is rated to draw up to 270w(it is powered by an 8pin plug just for the CPU), and each RAM stick uses about 10w, and each fan in it will use between 6 and 30w(depends on the fan, look at usage ratings, I have 5 13w fans in my case.).
Each USB port uses between 2 and 15w, and the HDD will use about 15w.
Link to thubian 6 core wattage usage under load
Granted, this is a higher model than the one in this computer for sale, but figure it would only use about 20% less wattage.
What TDP means
Look up the rest on your own, i hope this has been informative, and educative, because I know my computers.