HD 4000 only competitive via agressive clocking

[lefty2]

There's a very interesting graphic on Tom's hardware review of the new A4-5000:

This shows Core i3 using 14 more watts than Kabini in the gaming test. This indicates for me a couple of things:
a) The quoted 17W TDP of the i3 3217U obviously does not apply to when the iGPU is fully loaded.
b) The HD 4000 is only competitive with AMD's iGPUs because of aggressive overclocking.
c) AMD probably should play the same game - aggressively overclock the GPU when loaded. This way Kabini would have playable frame rates on AAA titles.

 

[Enigmoid]

There's a very interesting graphic on Tom's hardware review of the new A4-5000:

This shows Core i3 using 14 more watts than Kabini in the gaming test. This indicates for me a couple of things:
a) The quoted 17W TDP of the i3 3217U obviously does not apply to when the iGPU is fully loaded.
b) The HD 4000 is only competitive with AMD's iGPUs because of aggressive overclocking.
c) AMD probably should play the same game - aggressively overclock the GPU when loaded. This way Kabini would have playable frame rates on AAA titles.

1)

From anandtech

I also suspect the 15W TDP is perhaps a bit conservative, total platform power consumption with all CPU cores firing never exceeded 12W (meaning SoC power consumption is far lower, likely sub-10W).

17 vs <10 watts.

2)

ivy bridge has a 3+ watt PCH (not included in the 17 watt cpu tdp).

Taking that into account its around 2-4 watts difference which comes down to error and mobo. Ivy bridge ULV may be slightly going above its tdp.


3) On a single channel RAM interface upping the core clocks isn't going to go far (especially given the fact the the memory controller of kabini is poorer than ivy bridge).

 

[ShintaiDK]

Never compare laptops across random models. I can show you 2 exact same desktop systems too. One using 30W more than the other. Even if you interchange CPUs.

Not to mention the CPU needs to work alot less in the B960 system:

The B960 system also only contains 1 DIMM. And artificially crippled in the test.