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Green Computing
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The Tranquil PC is a 'green pc'

IMPORTANT announcement - from 1st April 2006 - ALL Tranquil PC systems are supplied as 'Carbon Free in Use'.  This commitment ensures that units supplied after that date do not leave any carbon footprint during their serviceable life times (5 years).  All CO2 emissions created by the burning of fossil fuels to create electricity to power Tranquil PCs is offset by tree planting campaigns.  All systems are supplied with a certificate of environmental conformance - see an example (click here)

Carbon Footpriint Logo
Zero Carbon Logo

Additionally the carbon footprint of the operating sites and activities of Tranquil PC Ltd is offset.
Our pledge - in May 2006 Tranquil PC issued our Environmental policy statement (click here)

Save CASH too !!
Typically a Tranquil PC system will consume as
little as 20% of the electricity of a standard PC. 
Imagine how much you could save in your own pocket !

There is much talk today about the effect of your PC on the environment.  It may not seem so important, if there was only one or two PC's in your office, or even your home, but today there are millions of PCs in use, and the amount of electricity they use, is not insignificant. 

A PC today, can consume 200-300W of power, and even with power saving modes enabled, this can still result in emissions of almost 220Kg of CO2 / annum (see below for an explanation).

By using more efficient systems as found in the Tranquil range of PCs, this level of CO2 could be reduced by almost 70%, down to a mere 70Kg / annum.

The effect of reducing PC power consumption, does not only effect the environment directly - think of the amount of air conditioning that is being used to cool down the work place, heated in part, by the PC.  An office with 50 PCs, may be generating up to 10kW of heat - that takes a lot of extra cooling.

C7 LogoHow does the Tranquil PC solve this problem?  Tranquil PC uses specialised systems, based on low power CPUs, such as the VIA C7, and the Intel Pentium Mobile.  These CPUs develop much less heat during operation, often less that 25% of the heat developed by a regular desk top CPU system.  It is not only the CPUs that are different in our systems - all parts are selected based on lower power consumption.  The end result is a unit that will consume less than 30% of the electricity of a similar desk top PC.

Does this mean that the Tranquil PC range is 'slower'?  No, not necessarily.  The VIA C7 CPU based systems are more than adequate for regular office duties, and are especially good at media content playback etc - and as such have become excellent platforms for media systems.  The Intel Pentium Mobile based systems will often outperform a high end desktop - recent reviews have suggested that a mere 1.8GHz Pentium Mobile system, will outperform a 3.2GHz Desktop PC system, in certain applications.

So are the T2e systems really 'green pcs'?  Yes.  Our range of PCs offer the lowest power consumptions available today, for use in the general PC market place.  All of our systems are not only low on power, they are also very low on noise, due to the unique low power consumption electronics, and use of specialised materials, our units do not use any fans - and therefore make almost zero noise.  The lack of fans also provides the basis for extremely reliable systems, with almost no moving parts.

How much power is used? We made the following assumptions :

The PC is used in working hours only (for 8 hours / day), during this time it is used as follows :

  • 2 hours    Heavy CPU load (100%)
  • 2 hours    Medium CPU load (50%)
  • 4 hours    Low CPU load (0%)
  • 16 hours  The system is in the lowest power state (S3)

The above is for 5 days / week.  At weekends, we assume the unit is unplugged from the wall.

For our 'reference' Desktop PC (100% CPU load = approx 200W) - the power consumed was : 6.8KW / week
For our 'reference' Tranquil T2e system (100% CPU load = 37W) - the power consumed was :  2.1KW / week

(a summary schedule can be downloaded here)

Costs / emissions : What does this mean in terms of real savings.  We used the following figures for our calculations :

1KWH of electricity costs £0.11 (UK Pounds)
1KW of electricity creates 620g of CO2

The reference desktop PC

COSTs

6.8

kWH

per week

£0.74

29.3

kWH

per month

£3.23

351.8

kWH

per year

£38.70

     

CO2 Emissions

4.2

Kg

per week

 

18.2

Kg

per month

 

218.1

Kg

per year

 

The reference T2e system

COSTs

2.1

kWH

per week

£0.24

9.3

kWH

per month

£1.02

111.7

kWH

per year

£12.29

     

CO2 Emissions

1.3

Kg

per week

 

5.8

Kg

per month

 

69.3

Kg

per year

 

This means, that the T2e will save approx £26.40 / annum in direct electricity consumption (not including other cooling costs, such as air conditioning).

This results in a saving of almost 150Kg of CO2 emissions (direct saving)

For additional information, or to promote low power computing initiatives - please contact us

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