Merging CPU cores

I have an idea to increase single-thread performance.
CPU cores should be merged into one macrocore which give any core any available resources.
Example: you want to multiply 100 vectors in one non-multithreaded function.
Normally:one core will execute the operations using its own resources.
With macrocore:the multiplication will be assigned to all available SIMD/FPU/ALU units in the macrocore(all core units).

>>2
>New demo of GPGPU technology, AAA-class Game Of The Decade at 4k resolution with all settings at the max
>system running at 600W and generating 70Db of noise
>..Overclocking just kicked in
>FPS count jumps to 510, 700watts
>neckbeards are euphoric
>the scenes start to render 250% faster , 730watts
>nerdgasm
>graphic card dies from overclocking
>smoke fills the room
>bzzt.. the motherboard short-circuits..sparks fly everywhere
>AMD reps in black suits escort shell-shocked enthusiasts to safety