1. Appro Products and Solutions Anthony Kenisky, Vice President of Sales Appro, Premier Provider of Scalable Supercomputing Solutions: 4/16/09

2. APPRO CORPORATE PRESENTATION Competitive Advantages :: Technology Differentiation No need for LWK (Light-Weight-Kernel) which allows system to run a wider range of commercial applications Diskless Operation with Std Linux OS support ACE™ Cluster Management Software to simplify management of large, complex systems Complete Cluster Management System can be partitioned to support multiple operating environments to provide flexibility in 3 rd party applications support Dynamic Virtual Cluster Operation Directed Airflow, an innovative air cooling system architecture which supports very dense systems and lowers facility cooling costs Packaging Scalable dual-rail, 3D Torus Topology, providing superior network communications performance Network Communications Performance

3. APPRO CORPORATE PRESENTATION GreenBlade™ SystemHyperClusters™ Xtreme™ SuperComputer :: Diverse Product Line Appro Product Portfolio Performance and availability for Large-Sized Deployments Modular Solution for Small to Mid-Sized Deployments Flexibility and Choice for Medium to Large-Sized Deployments

4. APPRO CORPORATE PRESENTATION Appro Xtreme-X™ Supercomputer – Balanced Architecture (CPU/Memory/Network) – Scalability (SW & Network) – Reliability (Real RAS: Network, Node, SW) – Facilities (30% less Space, 28% less Power & Cooling) Appro GreenBlade™ System – Price/Performance/Value – N+1 90%+ Efficient Power design – Hot swap blades w/Local Storage option – Density Advantage 10 nodes/80 core per system Appro HyperClusters™ – Cluster based on GreenBlade systems or rack-mount servers – Choice of CPU’s or GPU’s – Standard 19” rack support – Price/Performance per watt, reliability and flexibility :: Feature Summary Product Portfolio

5. APPRO CORPORATE PRESENTATION :: Performance and Availability Xtreme-X™ Supercomputer Management Nettowk GbE Switch (Dual Rail) 36-port QDR Infiniband Switch 16 Compute nodes’ Subrack Power/Cooling efficient solution with lower TCO 512 cores based nodes/Rack Peak Performance/Rack: 6.1TF Memory Capacity/Rack: 1.5TB Dual Rail Management Network Efficient Cooling Architecture : 28.8KW/Rack Redundant PSU 90% Efficiency, 5+1, PFC Redundant Fan: Up to 460W power/Node Appro Cluster Engine™ Management Software Complete package with improved (RAS) Ideal for large deployments, > 1000 nodes Scales up to 1000TF of computing power

6. APPRO CORPORATE PRESENTATION Improved cooling efficiency increasing computing capacity up to 28% with the same amount of cooling 100% of AC flow is forced through the entire system increasing system cooling efficiency Reduced total cost of ownership and increased computing capacity :: Directed Airflow Cooling Methodology Top View – Datacenter Floor Space Xtreme-X™ Supercomputer

7. APPRO CORPORATE PRESENTATION Renault F1 Racing Team Delivered 38TFs Xtreme-X Supercomputer for Virtual Wind tunnel project Customer Quote “Appro not only offered us a cost effective solution but they also improved our required technical specification through better reliability, greater fault tolerance and redundancy as well as more flexibility with regards to system scalability.” Bob Bell, Technical Director, ING Renault F1 Team :: Recent Design Deployment Xtreme-X™ Supercomputer

8. APPRO CORPORATE PRESENTATION PAGE | 8 :: HPC Building Block Solution GreenBlade™ System Green Architecture – Power-optimized design resulting in reduction of power consumption of platform cooling sub system Increased Density – Double the density of standard 1U servers Improved R/A/S – Shared N+1 power design – Shared cooling (3+3) design – Hot-swappable blades – Hot-swappable power supplies – Hot-swappable cooling fans Front View Rear View

9. APPRO CORPORATE PRESENTATION Three-year Savings in Power Cost per Server vs. GreenBlade™ – To adequately cool a compact 1U server, typical cooling system of 1U platform is designed as follows: Standard 1U uses up to six compact fans to cool one system Popular Twin 1U uses six compact fans to cool two systems – On the other hand, GreenBlade™ uses six larger(120mm), more reliable fans to cool up to 10 systems – Example below translates to lower TCO for a GreenBlade™ solution over competition Power Draw @ peak (W) Power Draw (kWh) – 3 yrs Power Draw & Cooling (kWh)** 3 yr cost of pwr & cooling in US ($)* Additional Cost over GreenBlade™ Total Additional Cost for 1000 servers GreenBlade™297.2W7,81012,496$1,624-- 1U Twin Server330.2W8,67713,883$1,804$180$180,000 1U Standard Server 366.5W9,63117,335$2,253$629$629,000 * Power cost calculated at $0.13/kWh as per Dept of Energy Commercial power cost national estimate report in 2007 ** Cooling power requirement estimated at 60% of total power supplied :: Benefits vs. standard 1U servers GreenBlade™ System

10. APPRO CORPORATE PRESENTATION :: Latest Processor and GPU Technologies New - Appro HyperClusters™ Appro HyperGreen™ Cluster Power-Efficient, based on GreenBlade System Appro HyperPower™ Cluster GPU, Performance Optimized Clusters Coming May/2009 Based on an open architecture designed for medium to large deployments Delivers performance, scalability and greater flexibility in a dense cluster architecture Offers the latest processor and GPU computing technologies Open cluster management options in an economical and power efficient compute platform Choice of server, networking and software with a variety of configuration options Tested and pre-integrated solution deployed as a complete package HPC professional services and support available

11. APPRO CORPORATE PRESENTATION Specifications :: Maximum Rack Configuration HyperGreen™ Cluster Cluster Solution based on the Appro GreenBlade System Up to 80 DP GreenBlades™/640 cores per 42U Rack Up to 5.12TB of system memory Up to 80TB of local storage Fully populated rack weighs ~1,749 lbs Rack-level power consumption is ~16kW to 32kW 20% power reduction per node compared to 1U servers Supports multi-configuration and interconnect options Standards IPMI or Appro BladeDome remote server mgmt Choice of open software solutions using Rocks+ and MOAB Ideal for mid to large-sized HPC and high-density computing

12. APPRO CORPORATE PRESENTATION Specifications – Supports up to 8x Sub-Racks – Supports up to 80x DP Compute Blades Use one SXB100 or 200 as Master node Some blades can be configured as network storage nodes for the cluster – Supports up 7.6TF per rack – Supports up to 5.12TB of system memory – Support up to 160x internal 2.5” HDDs, equal to 80TB of local storage – 2RU rack space left for switches – IB switches should be installed in a separate infrastructure rack – Fully populated rack weighs ~1,749 lbs – Depending on system configuration, rack-level power consumption is 16kW to 32kW :: One Scalable Unit – Cluster Recipe HyperGreen™ Cluster

13. APPRO CORPORATE PRESENTATION 7U 144p IB SW 1U LCD KVM 2U Mgmnt Server :: 136 Node- Sample Cluster Configurations Specifications – 136 Node Cluster – 14x Sub-Racks – 140x DP Compute Blades – 4x spare Compute Blades – 13TF Cluster (using 3GHz CPU) – 6.5TB of system memory – 2U Management Node – 1U Rackmount LCD/KVM – 7U 144p DDR IB Switch HyperGreen™ Cluster

14. APPRO CORPORATE PRESENTATION 14U 288p IB SW 2U Mgmnt Server :: 288 Node- Sample Cluster Configurations Specifications – 288 Node Cluster – 29x Sub-Racks – 290x DP Compute Blades – 2x spare Compute Blades – 27.6TF Cluster (using 3GHz CPU) – 13.8TB of system memory – 2U Management Node – 14U 288p DDR IB Switch HyperGreen™ Cluster

15. APPRO CORPORATE PRESENTATION 30U 864p IB Switch 2U Mgmnt Server :: 864 Node- Sample Cluster Configurations Specifications – 864 Node Cluster – 88x Sub-Racks – 880x DP Compute Blades – 16x spare Compute Blades – 82.9TF Cluster (using 3GHz CPU) – 41.4TB of system memory – 2U Management Node – 30U 864p DDR IB Switch HyperGreen™ Cluster

16. Appro Products and Solutions Anthony Kenisky, Vice President of Sales Appro, Premier Provider of Scalable Supercomputing Solutions: 4/16/09