Enabling High Efficiency Power Supplies for Servers : Update on industry, government and utility ini

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Enabling High Efficiency Power Supplies for
Servers Update on industry, government and
utility initiatives
Chris Calwell Policy Research Director Ecos
Consulting

• Brian Griffith
• System Power Architect
• Intel Corporation

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Agenda

• Importance of power supply efficiency
• Server System Infrastructure (SSI) power supply
  efficiency requirements
• Government market programs to improve power
  supply efficiency

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Why Is It Important to Reduce Computer Energy Use?

• IT equipment consumes 8 billion of electricity
  every year (100 billion kWh)
• Computer electricity use is growing over twice as
  fast (3.2/yr) as total electricity use (1.4/yr)
• Reducing power saves money, reduces heat and
  noise, and improves reliability

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Data Center Power Challenge
Note See PTMS010 Optimizing Data Centers with
Intels Platform Power Tools, for more details
Power Consumed by a typical 1U System
Focus of presentation

• Cause
• Poor power delivery efficiency
• Poor cooling efficiency
• Increasing component power consumption

• Effect
• Partially populated racks
• Increasing energy bills

Total AC power consumed by a 300W DC system 973W
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Power Supply Efficiency Measurements
Suppliers close to 80 plus and recommended SSI
levels
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Power Supply Efficiency Measurements
Rack efficiency higher to help data centers
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Importance of proper power supply

• Efficiency varies 55 to 84 depending upon
  loading condition and capabilities
• Input power reduces by 15 - 24
• N1 redundant power supplies run lighter loads
  lower efficiency

Proper power supply sizing has a significant
impact on system power consumption
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Importance of Power Supply Efficiency How much
power per rack?
Typical low cost PSU 70 High efficient PSU
83 Typical usage 50 of max
rack max wattage range
2.2 kW - 2.8 kW / Rack savings
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Importance of Power Supply EfficiencyHow much is
paid for energy?
Energy cost 0.07 / KWh Full 42U Rack
Typical low cost PSU 70 High efficient PSU
83 Typical usage 50 of max
Note Does not include HVAC or UPS energy losses
for cooling and backup conversion. Multiply by
2x for data center level energy cost.
1,700 - 1,400 / rack energy bill savings
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Importance of Power Supply EfficiencyHow many
systems can fit?
Typical low cost PSU 70 High efficient PSU
83 Typical usage 50 of max
4-5 more systems per rack
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The Business Case for Increasing Server PSU
Efficiency
Power Supply Price Range
Note Assumes 50 PSU loading and includes data
center losses (UPS, distribution, cooling)
83 Efficiency 90 per power supply savings
annually on a 600W supply
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Why is Efficiency Important to Promote?

• Power supply efficiency
• Most running at 65 to 75 efficiency
• Technology for 90 efficiency exists today
• Price impacts easily pay for themselves
• Effects
• Improve data center rack utilization
• Lower energy bill per system

Reducing power meets customer needs cooler,
lower TCO, more reliable
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Agenda

• Importance of power supply efficiency
• Server System Infrastructure (SSI) power supply
  efficiency requirements
• Government market programs to improve power
  supply efficiency

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Server System Infrastructure

• SSI will be promoting high efficient power
  managed (PSMI) power supplies
• Testing conditions align with ATX12V
• Required and recommended levels
• 20, 50, and 100 loading

Visit the SSI booth 46 and PTMS007 for more
details
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SSI Efficiency levels (proposed)
ATX SSI pedestal (EPS12V, ERP12V)
SSI Rack (EPS1U, ERP2U)
Rack efficiency at 20-50 loading critical to
improve data center facility utilization
SSI Industry specifications introduced to
encourage more efficient power supplies
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Agenda

• Importance of power supply efficiency
• Server System Infrastructure (SSI) power supply
  efficiency requirements
• Government market programs to improve power
  supply efficiency

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Desktop and Server Power Supply Developments

• CECs PIER program
• Test procedure
• Efficiency measurements
• www.efficientpowersupplies.org
• Server and UPS efficiency research
• http//hightech.lbl.gov
• 60 power supplies tested
• In-use power measurements conducted

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Comparing Server Power Supply Efficiency
Specifications
Note assumes loading in the 20 to 50 load
range for 425 W EPS1U power supply.
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ENERGY STAR

• ITS 2004 EPA announces changes to desktop spec
  in upcoming Tier 1 revisions
• Revised Sleep and Off power levels
• Likely addition of Idle mode power requirement
• Power supply efficiency requirements
• February 2005 EPA publishes first draft of Tier
  1 revisions
• Computers section on www.energystar.gov
  contains latest information on draft spec.

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Desktop and Server Power Supply Developments
Timeline
ENERGY STAR spec takes effect
Grandfathering period ???
ENERGY STAR spec revision
???
ENERGY STAR ITS announcement
2004
2005
2006
2008
2007
First 80 Plus qualifying units announced
80 Plus recruitment begins
Expected 80 Plus program duration
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80 Plus the Opportunity

• Manufacturers can get paid now to be compliant
  with future ENERGY STAR levels
• Create market differentiation and profit
  opportunities for innovators other than expanding
  power supply wattage
• Escape from the commodity trap of the power
  supply business
• Third party validation of efficiency power
  factor to help market products in U.S. and
  internationally

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80 Plus Program Concept

• Manufacturer buy-down program for efficient power
  supplies in desktop PCs and desktop-derived
  servers
• 5 per computer incentive for PCs, 10 for
  non-redundant servers (EPS12V and EPS1U)
• 3 per computer for marketing support
• 80 Plus power supply qualifications
• 80 efficiency at 20, 50 and 100 load
• True PF greater than 0.9 at 100 load

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80 Plus Funding Support
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80 Plus Qualifying Power Supplies

• First 80 Plus compliant PS
• Seasonic SS - 400HT
• 400W, ATX12V, PFC
• More qualifying desktop power supplies expected
  in March and April
• No qualifying server units to date
• Visit 80Plus.org for more details.

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80 Plus Benefits for Manufacturers

• Reduce heat and noise
• Better rack and space utilization
• Demonstrate industry leadership
• Reduce TCO for customer
• Positive environmental publicity
• Tap into utilities 1.5 billion/yr of energy
  efficiency programs to promote products

80 Plus and labeling programs help manufacturers
market more efficient computers and overcome
price premiums
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2003-Early 2004 Measurements
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Industry and Utility Specifications
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2004-2005 Measurements
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Summary

• Reducing power meets customer needs cooler,
  lower TCO, more reliable
• SSI Industry specifications introduced to
  encourage more efficient power supplies
• 80 Plus and labeling programs help manufacturers
  market more efficient computers
• Desktop experience so far illustrates what is
  possible with servers

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