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ASSIGNMENT 2
Power comparison of different SOC
Comparison of power between ARM processor
ARM Cortex-A15 ARM Cortex-A57 ARM Cortex-A9
ARM Cortex-A15:
The ARM Cortex-A1 MPCore processor delivers unprecedented
processing capability, combined with
low power consumption. Mobile configurations of the Cortex-A1
MPCore processor, which will include
the Cortex-A7 MPCore processor and CCI-400 to tie them together,
are expected to deliver over twice the
performance of todays top-of-the-line smartphones and over 4
times the aggregate performance of ARM
processor-based infrastructure platforms, combined with ARM's
signature low power consumption.
ncrease the DSP processing capability of ARM solutions in
high-performance applications, while offering
the low power consumption required by portable, battery-powered
devices. Performance and power
optimized L1 caches combine minimal access latency techniques to
maximize performance and minimize
power consumption. Caches are 32KB for instruction and 32KB for
data. This uses 28nm technology
ARM Cortex-A57:
Efficiently runs legacy ARM 32-bit applications Features cache
coherent interoperability with ARM family graphics processing units
(GPUs) for GPU
compute applications Power optimization efficiency optimized L2
cache design delivers lower latency and balances
performance with efficiency
Features cache coherent interoperability with ARM family
graphics processing units (GPUs) for GPUcompute applications This
uses 20nm technology.
ARM Cortex-A9:
Power Consumption 0.5 W (Po) . Power optimization efficiency
optimized L2 cache design delivers
lower latency and balances performance with efficiency.processor
solutions offering an over all
performance enhancement of well above 50% compared to A8. 40nm
(A9) this technology used in A9.Power savings Accurate branch
prediction Micro TLB RISC SIMD, Jazzelle RCT etc.
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Conclusion:
The above graph power improvement in cortexa50 series and cortex
A series . Here the technology used
in cortex-A15 is 28nm and in cortex-A57 is 20nm . The
architecture is ARMv7A for A series ARMv8-A
for A50 series. cortex-A15 ( 28nm) The technology is available
in super low-power (SLP), high
performance-plus (HPP) and low power, high performance (LPH)
technology offerings, to cater to the
complex requirements of next-generation SoC's. 28nm
Systems-on-Chip (SoCs) design platform is based
on high-k metal-gate (HKMG) 28nm transistors offer up to 60%
higher performance than 40nm at
comparable leakage with up to 50% lower energy per switch and
50% lower static power.The 40-nmprocess offers clear benefits over
prior nodes, including the 65-nm node and the more recent 45-nm
node.
One of the most attractive benefits is higher integration, which
enables semiconductor manufacturers topack greater functionality
into less physical space at lower costs. Although increased density
and
performance are valuable benefits, one of the most pressing
design considerations for todays system
developers is power consumption. ARM-based chips that offer
faster speeds and consume less power
20nm ARM chips ARM-based chips that are making processors more
efficient. continues to reduce the
power consumption of its processors while improving
performanceand while once upon a time that
only really mattered in the laptop, desktop, and server arena,
But this 20nm technology will be started in
next year (2014).the clock speeds of up to 3GHz. 30% faster than
current ARM-powered Android
devices.
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