Support (accelerated) for the Intel i740 is provided by the XF86_SVGA server with the i740 driver, and for the Intel i810 with the i810 driver. The i810 is currently only supported on Linux, and requires the agpgart.o kernel module in order to use modes that require more than 1MB of video memory.
Support (accelerated) for the Intel i740 is provided by the "i740" driver, and support for the Intel i810 is provided by the "i810" driver. The "i810" driver is currently Linux-only, and requires the agpgart.o kernel module.
The i740 and i810 are supported in both versions, but the i810 is only supported on Linux/x86 platforms at present.