The Nintendo 3DS CPU can clock a GPU at 400 MHz and does.

I don't see the GameCube doing more then around 200 MHz with its GPU clock at 194 MHz. And I don't see the Wii doing more then around 250 MHz with its GPU clock at 243 MHz.

The 3DS has way more better textures & shader abilities according to 3rd parties, and it has more then 120 million polygons clearly showing in its games, and it has somewhere from 60 to 100 shader cores. So what are you talking about.

The GameCube and Wii could never do Resdent evil revelations 3DS nor PS3 nor Castlevania 3DS nor batman Arkham Origins Blackgate nor kid Icarus uprising nor sonic generations 3DS nor cave story 3D.

The Wii can't even do the 3DS version of Donkey Kong Country Returns, which replace the Wii's cell-shaded graphics with pure polygon for 3DS.

Clock speeds don't matter much at all when the fact is the ati flpper features more shaders and texture mapping units for a greater raw power. 

I want to see some sources for it's better texture and shader capabilites too if you don't mind. BTW it's GPU clock speed is 133 mhz http://imagequalitymatters.blogspot.ca/2010/09/tech-report-nintendo-3ds-hardware.html so that gives it 53 million triangles and a pixel fillrate of 533 million pixels a second. LOL about the pica200 60 to 100 shader cores. If that were true every 3DS would be frying since it can't handle that type of power consumption.

3DS

Gamecube 

BTW resident evil 4 on gamecube looks better than resident evil revelations on the 3DS LOL. See how much better the bumpmapping is on the gamecube while also pushing a higher resolution too. 

Just so you know almost every game uses polygons to render an image. 

A former developer from High Voltage said that the 3DS has way more better textures & shader abilities then the Wii.

And 3DS screenshots are only 240p, so you have to see them on a 240p resolution display to know what it actually looks like.

But I see JoetheBro has already been answering you, so nevermind Mii, LOL.

I want some source once again for that claim. 240p display or not the fact is the 3DS is pushing a much lower resolution so if anything the gamecube is more impressive in it's own department being able to match revelations visuals while also maintaining a more consistent framerate at a higher resolution. 

A former developer from High Voltage said that the 3DS has way more better textures & shader abilities then the Wii.

And 3DS screenshots are only 240p, so you have to see them on a 240p resolution display to know what it actually looks like.

But I see JoetheBro has already been answering you, so nevermind Mii, LOL.

Yes, in a real world sense the wii/gamecube has more power than the 3DS. Just like the PS3 has more power than the Vita.

It's only when factoring in the smaller screens and updated effects that the handhelds compete with their console twins.

No one (or at least I'm not) is talking about absolute power, just per pixel.