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This must be the "lower end" one, I assume a higher end model will come out with 2GB
gpuz screenshot shows only 1600 shaders, so i assume its displaying 1 gpu at a time in gpuz, so its possible its showing 1gb ram per gpu and the card does have 2gb ram in total.
This must be the "lower end" one, I assume a higher end model will come out with 2GB
"ATI Radeon HD 5700 Series" = ati2mtag_Evergreen, PCI\VEN_1002&DEV_68B8
"ATI Radeon HD 5700 Series " = ati2mtag_Evergreen, PCI\VEN_1002&DEV_68B9
"ATI Radeon HD 5700 Series " = ati2mtag_Evergreen, PCI\VEN_1002&DEV_68BE
"ATI Radeon HD 5800 Series" = ati2mtag_Evergreen, PCI\VEN_1002&DEV_6898
"ATI Radeon HD 5800 Series " = ati2mtag_Evergreen, PCI\VEN_1002&DEV_6899
"ATI Radeon HD 5900 Series" = ati2mtag_Evergreen, PCI\VEN_1002&DEV_689C
"ATI Radeon HD 5900 Series " = ati2mtag_Evergreen, PCI\VEN_1002&DEV_689D
"EG CEDAR" = ati2mtag_Evergreen, PCI\VEN_1002&DEV_68E8
"EG CEDAR " = ati2mtag_Evergreen, PCI\VEN_1002&DEV_68E9
"EG CEDAR " = ati2mtag_Evergreen, PCI\VEN_1002&DEV_68F8
"EG CEDAR " = ati2mtag_Evergreen, PCI\VEN_1002&DEV_68F9
"EG CEDAR " = ati2mtag_Evergreen, PCI\VEN_1002&DEV_68FE
"EG REDWOOD" = ati2mtag_Evergreen, PCI\VEN_1002&DEV_68C8
"EG REDWOOD " = ati2mtag_Evergreen, PCI\VEN_1002&DEV_68C9
"EG REDWOOD " = ati2mtag_Evergreen, PCI\VEN_1002&DEV_68D8
"EG REDWOOD " = ati2mtag_Evergreen, PCI\VEN_1002&DEV_68D9
"EG REDWOOD " = ati2mtag_Evergreen, PCI\VEN_1002&DEV_68DE
So looks like 5970 will be slower than 5870CF.