2GB GDDR5 ATI® Radeon™ HD 4870 X2 – Dual GPU Technology vs. Single 1,792 MB NVIDIA® GeForce® GTX 295

Could anyone inform me as to which card is better? From the specs it looks the NVIDIA gives the better performance, but I could be wrong?Does the interface on the Nvidia allow two monitors to be connected to the computer so that two applications can run at the same time?

2GB GDDR5 ATI® Radeon™ HD 4870 X2 – Dual GPU Technology

GPU Speed 750MHz
Stream Processing 800 x 2 Units
Memory I/O 256-bit x 2
Memory Size 1GB x 2
Memory Type GDDR5
Interface Type PCI Express x16 (v2.0)
HDTV Out Support Yes
Digital Flat Panel Support Yes
Multiple Display Support 2


Single 1,792 MB NVIDIA® GeForce® GTX 295

GPU Speed 1,242 MHz
Processor Cores 480 ( 240 per GPU )
Texture Fill Rate 92.2 billiion/sec
Memory I/O 896-bit ( 448-bit per GPU )
Memory Size 1,792 MB
Memory Speed 223.8 GB/sec
Interface Type Two Dual Link DVI and HDMI
Multi Monitor Support Yes
HDCP Yes
HDMI Yes
Audio Input for HDMI SPDIF
Microsoft DirectX® 10
OpenGL 2.1
NVIDIA PhysX ready Yes
NVIDIA Cuda Technology Yes