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Processors : Powerful and Power Efficient

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PCQ Bureau
New Update

In this ever-evolving field, the year 2008 was no exception. It was already

evident in the past few years that processor manufacturers were concentrating on

not just improving processing performance alone but doing so quite

intelligently. Apart from just increasing clock speeds, there were more changes

done to their design. With the potential to directly affect a chip's performance

and life, these changes are important for the industry as well as the user.

There is increased focus on decreasing TDPs and shrinking die sizes.

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Looking back...



In retrospective, 2008 saw a number of new products being introduced by Intel
and AMD apart from the refreshed versions of the already existing series of

processors.

Mobile computing



In notebooks, AMD introduced a new mobile platform called Puma which features
the dual core Turion ultra or mobile Sempron processor, wireless IEEE 802.11

a/b/g/n mini-PCIe Wi-Fi adapter and graphics from ATI. The new platform also

features support for possible low voltage processors and other features like

trusted platform module (TPM) along with support for HyperTransport 3.0 and PCI

express 2.0. On the other hand, Centrino which has been Intel's flagship

platform for sometime, was upgraded to the fifth generation Centrino2 platform,

that consumes lesser power than the previously available platforms. It boasts an

Intel Core 2 Duo 45nm processor with clock speeds from 2.26GHz to 3.06GHz, the

mobile chipset offers RAM support for DDR3 SODIMM and NAND flash-memory caching,

branded as Intel turbo memory, along with Gigabit Ethernet LAN controllers.

Save money for

basic productivity
If the current economic condition has sent

shivers down your spine or even if it hasn't, saving money never hurts. When

buying computers to run routine applications, why buy an insanely powerful

system?

Intel's Atom and the VIA's Nano are two low cost processors

available today. Designed to run Windows XP smoothly (which is sufficient

for basic productivity), these processors are extremely low on power

consumption and are meant for low cost computing. Devices running on these,

called nettops and netbooks cost 15k-30k. Moreover, they are packed with

features such as Wi-Fi and Bluetooth for connecting users to the web

wirelessly.

Devices running on such engines are ideal for people who use computers

just for surfing the Internet or MS Office or other such less intensity

applications. More processors with the same USP are expected to be seen in

the near future as their implementation extends through laptops, portable

media

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Also low cost mobile computing came to life with the birth of new products

such as netbooks and nettops, due to the introduction of small low power

processors like the Nano from VIA and Atom from Intel.

Desktop computing



Though it is the dual core processors from AMD and Intel which remain

popular in the consumer desktop market, a new microarchitecture from Intel

called Nehalem has been introduced. This architecture comes with significant

changes to its design, to substantially improve the performance of processors

based on it. Core i7 is the name given to the desktop range of processors based

on the new architecture and has a number of revolutionary changes such as

integrated memory controller supporting DDR3 RAM, the Intel QuickPath

Interconnect technology which replaces the conventional front side bus and

simultaneous multithreading or hyperthreading.

Whatz in Store?
Well, processors have seen a constant

evolution since the time the term was even coined. With Pentium 2 and 3, the

features worth boasting were 500MHz clock speeds, which now even smart

phones have. Then came the shift to higher clock speeds, touching a few GHz

and lately, more than one core on each processor for better multi-tasking.

We think a few key things are worth noticing in the future segment:



DDR3 Memory support:
Many processors and platforms available right now

have DDR3 support and it has become quite evident with the release of

Intel's new microarchitecture that future products will be using the same.

Forget FSB: AMD's HyperTransport and Intel's new QuickPath

Interface technology replace the legacy Front Side Bus from the motherboard

and improve data transfer rates phenomenally and decrease latency. AMD has

already been using the HyperTransport technology in their line of

processors. On the other hand, Intel has QuickPath from their initial Core

i7 processors onwards, therefore it's goodbye FSB.

Shrinking Dies: Reducing the size of the chip has its own

advantages. A few processors available these days are manufactured on a 45nm

process which leads to lesser power consumption and reduced heating issues.

Processors in future are expected to shrink more and we shall hopefully see

die sizes reduced to 32 nm and finally to 22nm in a few years.

Lower TDPs: Processors that consume extremely less energy as

compared to those available today will be more common in future. Apart from

saving money on energy and being responsible for the planet's safety, they

also help deliver better battery backups and increase the life of products.

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Servers



This segment saw the evolution of a revolutionary 6-core processor based on
Intel's Core Microarchitecture called the Dunnington, under the Xeon brand of

server class processors. It effectively increases the processing power on each

socket by six times, thus making the process of building a more powerful machine

a little more economical, as the cost of motherboards increase dramatically with

increase in the number of sockets. This means that in a four socket motherboard,

installing four Dunnington processors would give you a staggering 24 cores.

Dunnington featured a single-die six core design and is based on Intel's 45nm

Penryn process. It is the first Xeon processor to feature up to 16MB of L3 cache

on board which helps in improving performance by reducing latency in accessing

frequently used data.

The Road Ahead...



Really, haven't we seen it all yet? Nope, we haven't. One might think that with
the current clock speeds and the number of cores that processors boast, we might

be witnessing the end of all that could be offered. If it helps in anyway, the

answer is that it doesn't seem like we will stop until most of the processes are

executed fast, as fast as the blink of an eye, ie until the processors are as

scalable and multitask-friendly as the human brain itself! Oops, they are

already more than that. Maybe until even when on full load they shall consume as

less a power as a child's night lamp. Now, let's take a quick peek at what lies

ahead.

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Desktop computing

Fusion



AMD and ATI joined hands in 2006 and Fusion was the codename assigned to the

new initiative that would merge a CPU and a GPU on a single chip. The new

technology focuses on combining general processer execution and 3D geometry

processing onto a single package. The processors based on Fusion would be

heterogeneous in nature and would have different clock speeds for the graphics

core and central processing core. To accommodate external PCI Express

peripherals, Fusion would feature a minimum 16 lane PCI Express link, thereby

having the ability to eliminate the Northbridge chip completely from the

motherboard. The processors would also see a new modular design methodology

called M-SPACE, enabling future processor designs to have more flexibility and

wider range of combinations. The processors based on Fusion would be meant for

both desktop and for mobile computing. The desktop implementation of Fusion has

been assigned the codename Falcon and for notebooks, it's called Swift. An

option for mobile phones, UMPCs and small multimedia devices has also been kept

open with 1-10W TDPs.

The New Phenom



Phenom is AMD's desktop line of microprocessors based on the K10
microarchitecture. A number of new processors, both triple and quad core

belonging to the same family are going to be introduced to the world. The key

thing about these new chips would be the 45 nm process that they would be

manufactured on as it helps in controlling heating issues and influences the

performance and DDR3 support. The technical details of a number of processors to

be launched codenamed Deneb, Propus, Toliman, Heka etc include a common set of

features comprising of AMD's Enhanced 3D Now, NX bit, Cool n Quite technologies.

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Westmere and Sandy Bridge



Core i7 is the successor to Intel's core 2 brand of desktop processors. The new
quad core processors are based on the brand new microarchitecture-Nehalem.

Westmere is going to be the 32nm shrink of Core i7 and is supposed to be

followed by Sandy Bridge with another new microarchitecture to be launched in

2010. Post this, a 22nm shrink of Sandy Bridge is expected to be introduced.

Mobile computing

Shrike and Eagle mobile platforms



Shrike is the name given to AMD's new mobile platform that is expected to be
launched next year. The new platform would have the processor codenamed Swift,

based on the Fusion initiative and would be made on a 45nm process.

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Expected to be manufactured on a 32nm process and planned to be launched

somewhere in 2010, Eagle is going to be AMD's first mobile platform running on a

quad core processor. Support for DDR3 1600MHz and Direct X10.1 is also going to

be featured on the new platform.

Calpella, the sixth gen Centrino



The sixth generation Centrino, codenamed Calpella is expected to be the Intel's
answer to AMD's new platforms that would be based on Fusion and is expected be

seen later next year.

The chipset is expected to feature Intel's QuickPath Interconnect technology

along with DDR3 support. The processor on Calpella is going to be a mobile

version of the processors based on Intel's new Nehalem microarchitecture. Both

dual and quad-core versions will be available on this platform.

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Low cost computing

Pineview



In 2008, we saw a number of products running on the ultra small, low power
processors, Intel's Atom being the latest one. After Diamondville, Intel is all

set to bring in new processors in their Atom family, codenamed Pineview.

Similar to Diamondville, the new processor will be used in Netbook/Nettop

systems and will be available in single and dual core versions.

It will feature hyperthreading and is expected to be manufactured on a 45nm

or 32nm process.

Bobcat



The Bobcat processor from AMD is also expected to be seen next year. Like Atom
this one is also a simplified x86 CPU core having extremely low TDPs (1-10W) and

targeted at UMPC, handheld and other small form factor devices.

Server processors



Future versions of Intel's Xeon line of server class processors include two
processors codenamed Gainestown and Beckton. Based on Nehalem, the new

microarchitecture from Intel, the Gainestown processor will be a quad-core and

is expected to be launched early next year. As compared to the desktop processor

Core i7, Gainestown would have a second QuickPath interface enabling it to be

used in a dual socket motherboard configuration. Beckton is again a Nehalem

based processor but with four QuickPath interfaces for a Quad socket

configuration.

AMD on the other hand have a number of product launches lined up in the

server segment. Opteron, AMD's server line of processors shall see the

introduction of Shanghai core based products manufactured on a 45nm process,

codenamed Istanbul, next year. After this, they are expected to replace the line

with their six cores Sao Paolo and the staggering twelve core Magny Cours

products manufactured using the Multi-chip module technique. Also, the newly

announced Bulldozer core with 4 native cores or more will be introduced on a

32nm process in the server line of processors, each supporting SSE5 and aimed at

better HPC and cryptographic computation.

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