Atrix Core Speeds

[PeartFan40]

I was curious to know the actual speeds of each core on the Atrix. Someone at AT&T told me they were clocked at 500mhz each, for a total of 1ghz. That didn't sound right to me, so I checked for myself and found this. Pretty impressive.

nVidia Tegra 2 full spec sheet:

As the world's first mobile super chip, NVIDIA® Tegra™ 2 brings extreme multitasking with the first mobile dual-core CPU, the best mobile Web experience with up to two times faster browsing, hardware accelerated Flash, and console-quality gaming with an ultra-low power (ULP) NVIDIA® GeForce® GPU. Get never-before-seen experiences on a mobile device with NVIDIA Tegra.

Key Features

* Dual-core ARM Cortex-A9 CPU — The world's first mobile dual-core CPU for faster Web browsing, snappier response time, and overall better performance. The Cortex-A9 is the first mobile CPU with out of order execution for more efficient processing, resulting in a better overall experience.
* Ultra-low power (ULP) GeForce GPU — Architected for low-power applications, the ULP GeForce GPU delivers outstanding mobile 3D game playability and a visually engaging, highly-responsive 3D user interface.
* 1080p Video Playback Processor — Watch 1080p HD movies stored on your mobile device on your HDTV without compromising battery life.

Specifications:

Processor
CPU Dual-Core ARM Cortex A9
Frequency 1 GHz, per core
L2 Cache 1 MB
L1 Cache (I/D) (32KB / 32KB) per core
Memory
Frequency DDR2-667 (Tegra 250)
LPDDR2-600 (Tegra 230 and Tegra 250)
Memory Size Up to 1GB
GPU
Architecture ULP GeForce
Cores 8
Fully Programmable Yes
OpenGL ES Version 2
OpenVG 1.1
EGL 1.4
Video (1080p)
Decode H.264
VC-1 AP
MPEG2
MPEG-4
DivX 4/5
XviD HT
H.263
Theora
VP8
WMV
Sorenson Spark
Real Video
VP6
Encode H.264
MPEG4
H.263
VP8
Video Teleconference (VTC) H.264
MPEG4
H.263
VP8
Audio
Decode AAC-LC
AAC+
eAAC+
MP3
MP3 VBR
WAV/PCM
AMR-NB
AMR-WB
BSAC
MPEG-2 Audio
Vorbis
WMA 9
WMA Lossless
WMA Pro
G.729a *
G.711 *
QCELP *
EVRC *

* Through third party
Encode AAC LC
AAC+
eAAC+
PCM/WAV
AMR-NB
AMR-WB
Imaging
Primary Camera 12 MP
Secondary Camera 5 MP
Mpixel/s 150
Digital Zoom Up to 16x
JPEG Decoding/Encoding 80MP/sec
Still image stabilitization Yes
Video stabilization Yes
Features Auto Exposure
Auto White Balance
Auto Focus
Lens Shading 9th order
De-Mosaic
Sharpening
Programmable De-Noise
MIPI CSI Yes
Display
Display Controllers 2 simultaneous
HDMI 1.3 1920x1080
LCD 1024x600 (Tegra 230)
1680x1050 (Tegra 250)
CRT 1280x1024 (Tegra 230)
1600x1200 (Tegra 250)
MIPI DSI Yes
Package
Package 12x12 PoP (Tegra 230 and Tegra 250)
23x23 BGA (Tegra 250)
Process 40 nm

 

[nickgto]

Tegra 2 manages it clock speed depending on the load and the range is between 200mhz all the way up to 1ghz per core. A single core 1ghz processor might ramp up to 800 mhz to do a particular task but tegra 2 dual 1ghz core might only ramp up to 450mhz for the same particular task.

 

[zeotrope]

Tegra 2 manages it clock speed depending on the load and the range is between 200mhz all the way up to 1ghz per core. A single core 1ghz processor might ramp up to 800 mhz to do a particular task but tegra 2 dual 1ghz core might only ramp up to 450mhz for the same particular task.

unless an application is optimized to take advantage of both cores it wont really work like that. what ends up happening is one app will run in a thread on one core, another app will be executing on another core, and overall the system will run faster because its not a single core switching back and forth between tasks all the time