PS2 réponse évidente...
La psp est simplement plus proche d´une ps2 ( 294mhz) que d´une psone ( 33mhz) du fait des ses coprocesseurs comparable ( et non équivalent) au fameux emotion engine.
Si tu veux t´amuser un peu :
PSP :
MIPS R4000 32bit Core
128bit Bus @ 1 - 333MHz
Main Memory : 32MB, 4MB embedded
Bus Bandwidth :2.6GB/sec
FPU, VFPU ( Vector Unit) @ 2.6GFlops
PS2 EE Multimedia CPU :
294.913 MHz
Main Memory: 32MB Direct Rambus @ 800Mhz, dual channel
Memory Bus Bandwidth: 3.2GB per second
Polygon Rate: 75 Million Polygons per second(no texture layer), 38 Million, polygons per second(one texture layer), and 20 Million polygons per second(two texture layers)
PSP Graphics Core 1
3D Curved Surface + 3D Polygon
Compressed Texture
Hardware Clipping, Morphing, Bone(8)
Hardware Tessellator
Bezier, B-Spline(NURBS)
ex 4x4, 16x16, 64x64 sub-division
PSP Graphics Core 2
´Rendering Engine´ + ´Surface Engine´
512bit Bus, 1-166 MHz
VRAM :2MB(eDRAM)
Bus Bandwidth :5.3GB/sec
Pixel Fill Rate :664 M pixels/sec
max 33 M polygon / sec(T&)
24bit Full Color:RGBA
PS2 :
1 - The 150MHz Graphics Synthesizer
Speed: ~150Mhz(147.456MHz)
On chip memory(VRAM): 4MB DRAM
Frame Buffer Bandwidth: 38.4Gigabytes per second
Pixel Write Speed: 2.4Gigapixels
DRAM Bus Bandwidth: 48GB per second
DRAM Bus width: 2560 bits
2 - Integrated 32-bit PlayStation CPU ( autrement dit le truc qui sert à emuler la psone)
Clock Speed: 33.8MHz Regular, 37.5Mhz with Fast Loading enabled
IOP Memory: 2MB
Ajoutons à cela que tous les effets software de la PS2 sont gérés en Hardware par la psp.