Digit-Life give us a taste of things to come with this card:

Today we are going to preview a dual-GPU monster based on R700, the ATI RADEON HD 4870 X2 (R700) 2x1024MB. Instead of doubling the memory capacity of HD 4870 512MB, this novelty has four times as much: 2x1024MB (2GB) RAM.

Read the full review at Digit-Life:

RADEON HD 4870 X2 specifications

• Codename: R700 (2 x RV770);
• Process technology: 55nm;
• 2 GPUs, 956M transistors each;
• Unified architecture with an array of shared processors for stream processing of vertices, pixels and other types of data;
• Hardware support for DirectX 10.1, including Shader Model 4.1, geometry generation and stream output;
• 2 x 256-bit memory bus, 4 x 64-bit controller supporting GDDR3 and GDDR5;
• 750 MHz core clock;
• 2 x 10 SIMD cores, including 2 x 800 scalar ALUs, integer and FP calculations, FP32/FP64 support, according to IEEE 754;
• 2 x 10 larger texture units supporting FP16/FP32;
• 2 x 40 texture addressing units;
• 2 x 160 texture fetch units;
• 2 x 40 bilinear filtering units supporting full-speed FP16 texture filtering and trilinear and anisotropic filtring support for all texture formats;
• Dynamic branching in pixel and vertex shaders;
• 2 x 16 ROPs supporting AA modes with programmable fetch of over 16 samples/pixel, including FP16/FP32 frame buffer. Up to 32 samples/clock (including MSAA 2x/4x modes and FP16 buffer), 128 samples/clock in Z only mode;
• Simultaneous write to up to 8 frame buffers (MRT);
• Support for 4 x RAMDAC, 4 x Dual Link DVI, HDMI, HDTV, DisplayPort (only 2 available);