Where can I determine the value of my iMac for resale in these configurations? I no longer have the retail box and its still under warranty until 1/30/2013.
2011 27-inch
3.1GHz Quad-Core Intel Core i5
2560 x 1440 resolution
4GB (two 2GB) memory
1TB hard drive1 7200rpm
SuperDrive
AMD Radeon HD 6970M with 1GB
OS X 10.8 Mountain Lion
vs
8GB (one 8GB) memory
vs
16GB (two 8GB) memory
2011 27-inch
3.1GHz Quad-Core Intel Core i5
2560 x 1440 resolution
4GB (two 2GB) memory
1TB hard drive1 7200rpm
SuperDrive
AMD Radeon HD 6970M with 1GB
OS X 10.8 Mountain Lion
vs
8GB (one 8GB) memory
vs
16GB (two 8GB) memory