Exhibit 10.18

Executive Officer Summary Compensation Sheet

Annual Cash Compensation for Senior
Executive Officers

The annual cash compensation for Executive Officers of Rackable Systems, Inc. as of December 29, 2007, was as follows:



|                                                               |  |                    |         |                     |   |        
|-------------------------------------------------------------- |  | ------------------ | ------- | ------------------- | - | -------
|Executive Officers                                             |  | Annual Base Salary |         | Annual Target Bonus
|                                                               |  |                   
|Mark J. Barrenechea                                            |  | $                  | 350,000 |                     | $ | 250,000
|Chief Executive Officer                                        |  |                    |         |                     |   |        
|                                                               |  |                   
|Giovanni Coglitore                                             |  | $                  | 250,000 |                     | $ | 100,000
|Founder and Chief Technology Officer                           |  |                    |         |                     |   |        
|                                                               |  |                   
|Anthony P. Gaughan                                             |  | $                  | 270,000 |                     | $ | 135,000
|Senior Vice President and Chief Products Officer               |  |                    |         |                     |   |        
|                                                               |  |                   
|Maurice Leigenstern                                            |  | $                  | 235,000 |                     | $ | 94,000 
|General Counsel, Senior Vice President and Corporate Secretary |  |                    |         |                     |   |        
|                                                               |  |                   
|Madhu Ranganathan                                              |  | $                  | 263,000 |                     | $ | 105,000
|Chief Financial Officer                                        |  |                    |         |                     |   |        
|                                                               |  |                   
|David M. Yoffie                                                |  | $                  | 240,000 |                     | $ | 84,000 
|Senior Vice President of Operations                            |  |                    |         |                     |   |        

Cash Bonus Arrangements for Executive Officers:



|1. | 25% of the Annual Target Bonus maybe earned each quarter. The bonus awards are determined based upon Rackable Systems achievement of certain performance goals to be
established by the Compensation Committee of the Board.
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