Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
Name the average DDR3 speed for model e-350

### Inputs:
table_name: table, columns: ['Series ^', 'Model', 'CPU clock ( MHz )', 'CPU cores', 'TDP ( W )', 'L2 cache (KiB)', 'Radeon cores', 'DDR3 speed']

### Response:
SELECT AVG DDR3 speed FROM table WHERE Model = e-350