What is Accelerated Processing Unit?
It is formerly
known as Fusion which is the marketing term for a 64-bit series from AMD designed
to act as central processing unit(CPU) and graphics processing unit(GPU) on a
single chip. APU is a general purpose processor that features nearly discrete
integrated graphics processors(IGPs) which are normally termed by “integrated
graphics”
Sony
Playstation 4 and Microsoft Xbox One eighth generation video game consoles
where both use semi-custom third generation low-power APUs.
Intel CPUs
with integrated HD Graphics also have a CPU and GPU on a single micro chip but
they don’t offer heterogeneous system architecture(HSA) features.
What is Heterogeneous System Architecture(HSA)?
Heterogeneous
system architecture (HSA) is a vector set of specification that allow for the
integration of CPU and GPU on the same bus with shared memory and tasks. This is being developed by AMD and ARM. The main objective of this platform was to
reduce the communication latency between CPUs, GPUs and other computer devices,
and make these various devices more compatible from a programmer’s perspective.
APU Architecture
AMD APUs have
a unique architecture where they have AMD CPU modules, cache and discrete-class
graphics processor and all on the same chip using the same bus with shared memory
where this architecture allows the utilization of graphics accelerators like
CUDA or OpenCL with the integrated graphics processor.
Zen2 is the
code name of latest AMD micro architecture fabricated with technology of TSMC
7nm and powering the third generation of Ryzen processors, known as Ryzen 3000
for the main stream desktop chips and Threadripper 3000 for high-end desktop
systems.
With Zen 2
each CPU chip houses 8 cores arranged in two core complexes of 4 cores each.
Each chip is
manufactured using TSMC 7nm and are about of 74 to 80mm2 in size the chip has 3.9
billion transistors , L3 cache is of 32MiB, with each core on an 8-core chip
now having access to 4MiB, to discover more about AMD architecture stay tuned for next updates.
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