Difference between Acceptance and System testing!

Acceptance testing	System testing
Acceptance testing is performed by user personal and may include assistant by software testers	System testing performed by developers and/or software testers
	System testing should be performed before Acceptance Testing
Acceptance testing Should focus on input processing, use of the software in the organization, and whether or not the specifications meet the true processing needs of the user.	System testing will focus on determining whether or not the software specifications have been implemented as specified.
Acceptance testing is considered to be the final stage of validation. This is the time to see that the system under test meets the users needs and provides confidence in its use	System testing is done by integrating the component of a system and any defect that occurs in the system is due to the defect in the integration of the system, but not in the individual components
Acceptance testing is the process of comparing a program to its requirements	These tests check for factors such as Cross-Tool testing, memory management and other operating system factors
Acceptance must be performed by the actual user's and their Assistants including consultants, auditors, internal systems staff, etc.
The actual software and hardware configuration (or equivalent configuration) must be tested
The actual policies, procedures, manuals, operations, organization structure, and controls that will be in place and required to meet the stated objectives of the Systems must be used in the test.