Crossfiring help with ASUS HD 7770 2GB

[carlo arcebido]

I have a ASUS HD7770-2GD5 Radeon HD 7770 GHz Edition 2GB 128-bit GDDR5 PCI Express 3.0 x16 HDCP Ready And i would like it to pair with a SAPPHIRE 100358L Radeon HD 7770 GHz Edition 1GB 128-bit GDDR5 PCI Express 3.0 x16 CrossFireX Support Video Card

they have the same model and sockets but different memory what is better pairing it with 1gb or another 2gb?

 

[Spaniard United]

Another 2gb. If paired with a one, in essence each card will only be able to use 1gb of their memory. When Crossfiring, it's always best to use 2 of the same cards, or at least 2 cards with the same specs.