**THIS LISTING IS FOR THE AMD Radeon HD4670M; 1GB DDR2; MXM 2.1A ***

Compatible with

Apple A1225 24" iMac; Apple iMac 21.5" 2009 

• Onboard memory size: 1GB,
• Memory clock: 500MHz
• Memory bus width: 128-bits
• Memory type: 8pcs DDR2 64MX16-2.0, Samsung K4N1G164QQ-HC20
• MXM2.1A based notebook/motherboard is required