ZOTAC H55 - ITX Tested CPU CPU type Speed CMOS CPU power Core i5-760* 2.8GHz 45nm 95W Core i5-750S* 2.4GHz 45nm 82W Core i5-750* 2.66GHz 45nm 95W Core i5-670 3.46GHz 32nm 73W Core i5-661 3.33GHz 32nm 87W Core i5-655K 3.2GHz 32nm 73W Core i5-650 3.20GHz 32nm 73W Core i3-540 3.06GHz 32nm 73W Core i3-530 2.93GHz 32nm 73W Pentium G6950 2.80GHz 32nm 73W * These processors have no Integrated Graphic. User must install add-on PCI-E Graphic card. Tested Memory Model marker size DDR type Part number A-DATA 1GB DDR3-1066 AD31066001GMU Aeneon 2GB DDR3-1333 AXH860UD20-13G Aeneon 2GB DDR3-1600 AXH860UD20-16G** Apacer 2GB DDR3-1066 AM5D5808DE Kingston 2GB DDR3-1333 KVR1333D3N9 SAMSUNG 2GB DDR3-1066 M378B5673DZ1-CF8 SAMSUNG 2GB DDR3-1333 K4B1G08460 SAMSUNG 2GB DDR3-1333 M378B5673FH0-CH9 SAMSUNG 4GB DDR3-1333 M378B5273BH1-CH9 Hynix 4GB DDR3-1333 HMT351U6AFR8C-H9 ** DDR3-1600 memory module run at 1333MHz clock.