Sign in with
Sign up | Sign in

Video Playback, Power Consumption

G45 And GeForce 9400: Integrated Chipsets For Core 2

Video Playback

Using the 2.83 GHz Core 2 Quad Q9550s, both platforms stay at roughly 6% CPU utilization, on average, when playing various Blu-ray movies. Switching to the slower Core 2 Quad Q8200s did not make much of a difference on the GeForce 9400 mGPU platform, but it increased the CPU load on the G45 system.

Power Consumption

There were no substantial differences in power consumption either. The Intel system managed to reach slightly lower idle power consumption on the Core 2 Quad Q8200s, but all other systems manage to stay below 40 W, which is an excellent result. Keep in mind that we used a very efficient 220 W power supply; using a 500+ W model would increase the idle power by a few watts.

Although there are some differences when looking at the voltage regulators—four phases on the DFI/Nvidia board versus three phases on the Intel motherboard—the GeForce 9400 mGPU is clearly more efficient at maximum CPU load (using all four cores). The 92 W peak power on a Core 2 Quad Q9550s is roughly the same as on the Intel G45 system, but using only the Core 2 Quad Q8200s.

Ask a Category Expert

Create a new thread in the UK Article comments forum about this subject

Example: Notebook, Android, SSD hard drive

Display all 7 comments.
This thread is closed for comments
  • 0 Hide
    Anonymous , 8 April 2009 19:09
    another article to prove that Intel IGP is inferior :D 
  • 0 Hide
    wild9 , 9 April 2009 00:14
    ..and the reason why people still buy AMD rigs :) 
  • 0 Hide
    wild9 , 9 April 2009 00:28
    Instead, you have to select nForce—which alone may be impossible for someone who is not familiar with the NVIDIA portfolio—check nForce 7 series and then select nForce 730i/GeForce 9400/9300.

    I hope nVidia picks up this. There are similar problems when trying to source drivers for AMD platforms, or find general information on their feature sets. With different labels to represent the same product it can be very confusing. Surely they can simplify it.
  • 0 Hide
    mi1ez , 9 April 2009 00:32
    Could you run an AMD card in the NVidia board and use physx accel through the mobo?
  • 0 Hide
    edisback , 9 April 2009 05:24
    Wow, Is Tom's Hardware saying that the G45/ GeForce 9400 motherboard architecture has made such a leap forward in power efficiency that the 'System idle power'(if not quite peak power) figures are not that dis-similar to the G31 motherboards reviewed in the "G31 And E7200: The Real Low-Power Story" story?,2039-13.html

    The power savings from the G45/ GeForce 9400 motherboard architecture(s) must be considerable considering the extra power required for the Quad processor's and all the extra components on the G45/GeForce 9400 motherboards ......

    Have the G45/ GeForce 9400 motherboards knocked the G31/ E7200 combo of their low power perch?
  • 0 Hide
    madogre , 9 April 2009 22:41
    No you cant run physx on the 9400 and then run an ATI GPU for gaming.
  • 0 Hide
    BenSheriff , 8 September 2009 10:26
    who the hell wants to run ati lolz. Nvidia always provides better clarity and perforamnce amd/ati has always got error , bugs , delays and ofc HEAt issues!