whats is TEGRA and MALI and POWER VR and Adreno?

Names of CPU that the phone has The most powerful out of those would be the Mali-400. After that I'd say the PowerVR SGX 540, then the ULP GeForce (I'm assuming Tegra 2, if we're within the same generation), then the Adreno 205

CPU help in playing powerful Hd games each with its ability

                                                          Adreno:

Sony Ericsson:

01. Xperia X10 Mini pro

02. Live with Walkman

03. Xperia X10 Mini

04. Xperia Mini pro

05. Xperia Arc S

06. Xperia Neo V

07. Xperia X10

08. Xperia Arc

09. Xperia Ray

10. Xperia Pro

11. Xperia Play

12. Xperia Neo

13. Xperia Mini

14. Xperia X8

Samsung:

01. I9001 Galaxy S Plus

02. Galaxy Mini

03. Galaxy Ace

04. Galaxy Gio

05. Galaxy Fit

HTC:

01. Google Nexus One

02. Sensation 4G

03. Sensation XL

04. Sensation XE

05. Incredible S

06. Wildfire S

07. Desire HD

08. Sensation

09. Desire S

10. Desire Z

11. EVO 3D

12. Legend

13. Desire

14. Hero

LG:

01.LG Optimus One P500

PowerVR:

Samsung:

01. I9100G Galaxy S II

02. galaxy tab p1000

03. I9003 Galaxy SL

04. Google Nexus S

05. I9000 Galaxy S

LG:

01. Optimus Black White version

02. LG Optimus 3D P920

03. Optimus Black P970

Motorola:

01. DROID RAZR XT912

02. DROID RAZR MAXX

03. MILESTONE XT720

04. MILESTONE 2

05. RAZR XT910

06. MILESTONE

07. ATRIX 2

08. DEFY

Mali:

Samsung:

01. P6800 Galaxy Tab 7.7

02. I9100 Galaxy S II

03. Galaxy Note

Tegra 2:

Samsung:

01. Galaxy Tab 10.1

02. I9103 galaxy R

Acer:

01. Iconia Tab A500

Asus:

01. Eee Pad Transformer

Motorola:

                                                         01. Xoom

more devices you can download this app on google play and see your CPU type 

• Tegra, developed by Nvidia, is a system-on-a-chip series for mobile devices such as smartphones, personal digital assistants, and mobile Internet devices. The Tegra integrates the ARM architecture processor central processing unit (CPU), graphics processing unit (GPU), northbridge, southbridge, and memory controller onto one package. The series emphasizes low power consumption and high performance for playing audio and video.

• PowerVR is a division of Imagination Technologies (formerly VideoLogic) that develops hardware and software for 2D and 3D rendering, and for video encoding, decoding, associated image processing and Direct X, OpenGL ES, OpenVG, and OpenCL acceleration.

• Snapdragon is a family of mobile system on chips by Qualcomm. Qualcomm considers Snapdragon a "platform" for use in smartphones, tablets, and smartbook devices. The Snapdragon application processor core, dubbed Scorpion, is Qualcomm's own design. It has many features similar to those of the ARM Cortex-A8 core and it is based on the ARM v7 instruction set, but theoretically has much higher performance for multimedia-related SIMD operations.

• The Mali series of graphics processing units (GPUs) produced by ARM Holdings for licensing in various ASIC designs by ARM partners. Like other embedded IP cores for 3D support, the Mali GPU does not feature display controllers driving monitors. Instead it is a pure 3D engine that renders graphics into memory and hands the rendered image over to another core that handles the display.