Tegra 2 dual-core Vs Tegra 2 single core Vs DroidX , GalaxyS ,Nexus One Benchmarks and new benefits
After the Tegra and Tegra 2 in which none of these has impact on the mobile market , Nvidia just announced the a new multicore technology with Tegra 2 multi-core mobile CPU.
A PDF file leaked from Nvidia show us the capability of the new chip , Nvidia claims that tegra 2 dual-core processors can deliver up to 40 percent lower power consumption in certain usage scenarios with equal or superior performance to single cores all that at lower clocks and voltages as the PDF benchmarks tell us however in realety adding a second core must increase performance to 50%, but of course with up to 50% increase in power consumption , and you can imagine how can that affect the usage time on current smart phones .
A PDF file leaked from Nvidia show us the capability of the new chip , Nvidia claims that tegra 2 dual-core processors can deliver up to 40 percent lower power consumption in certain usage scenarios with equal or superior performance to single cores all that at lower clocks and voltages as the PDF benchmarks tell us however in realety adding a second core must increase performance to 50%, but of course with up to 50% increase in power consumption , and you can imagine how can that affect the usage time on current smart phones .
In the Moonbat benchmark Tegra 2 perform 2.5 better with the DroidX, Galaxy S and Nexus One, based on OMAP 3630, S5PC 110 and QSD 8250 processors respectively.
Voltage and Frequency Scaling Benefits of tegra 2 Dual Core CPU :
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| Voltage and Frequency Scaling result of tegra 2 Dual Core CPU |
And this is what Nvidia say about the dual core technology results when browsing a web page compared to a single core :
"Consider browsing the Web on a single core CPU. If the Web page contains several scripts, streaming Flash video content, and script-based images, then in most cases, the single core
CPU will be running at peak utilization, and to deliver peak performance, it will also be running at maximum operating voltage and frequency. Let us assume that the single core CPU for this
task consumes power equal to ‘P’. Let us also assume that the operating voltage of the CPU is 1.1V and the operating frequency is 1 GHz.
Now consider the same task running on a dual core Cortex A9 CPU used in the NVIDIA Tegra architecture. Due to Symmetrical Multiprocessing, the Web browsing task is shared between the
two Cortex A9 cores. Therefore both cores need to run at only around 50% utilization to complete the task. Since the workload is shared, the cores can run at much lower voltage and frequency. Because each core processes only half the workload, each core can operate at almost half the frequency of the single core CPU, and therefore can run at a lower operating voltage.
CPU will be running at peak utilization, and to deliver peak performance, it will also be running at maximum operating voltage and frequency. Let us assume that the single core CPU for this
task consumes power equal to ‘P’. Let us also assume that the operating voltage of the CPU is 1.1V and the operating frequency is 1 GHz.
Now consider the same task running on a dual core Cortex A9 CPU used in the NVIDIA Tegra architecture. Due to Symmetrical Multiprocessing, the Web browsing task is shared between the
two Cortex A9 cores. Therefore both cores need to run at only around 50% utilization to complete the task. Since the workload is shared, the cores can run at much lower voltage and frequency. Because each core processes only half the workload, each core can operate at almost half the frequency of the single core CPU, and therefore can run at a lower operating voltage.
Let us assume that each core runs at a frequency of 550 MHz and at an operating voltage of 0.8V to process the task.
The dynamic power consumption of each core is proportional to the operating frequency and to the square of the operating voltage. Due to the exponential relationship between power and
voltage, the dual core CPU consumes lower power than a single core CPU for the same workload.
The dynamic power consumption of each core is proportional to the operating frequency and to the square of the operating voltage. Due to the exponential relationship between power and
voltage, the dual core CPU consumes lower power than a single core CPU for the same workload.
The figure shows how a dual core Cortex-A9 CPU will consume only 60% of the power consumed by a single core Cortex-A8 for the same task. "
Benchmark and tests result
Average Web page load time speedup test Result VS Tegra 2 single core:
Moonbat Benchmark Result:
CoreMark Benchmark Result Vs Tegra 2 single core::
Gaming benchmark : Quake Game Play Performance Improvement
Tegra 2 dual-core Vs Tegra 2 single core Vs DroidX , GalaxyS ,Nexus One Benchmarks and new benefits
Reviewed by Mhr
on
15:32
Rating:
Reviewed by Mhr
on
15:32
Rating:
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Your Galaxy S has android 2.1! the comparison is not only about CPU/GPU, was corrupted about operating system.
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