Much just like the i219-V, the i225-V is a low-cost PHY that depends on PCH-based Ethernet MAC and its proprietary PCIe-based bus that runs at half the data-rate of PCIe. This is exactly why the i219-V does not function on AMD motherboards, however relatively its pricier sibling, the i211-AT, which comes with an built-in MAC and a typical PCIe interface. Both chips are recognized to supply an identical throughput efficiency, nonetheless, the i211-AT edges forward with some options reminiscent of TCP segmentation, direct cache entry, and so forth. The i219-V sells for as little as $1.5 per chip in high-volume reels to motherboard producers, and the i225-V is anticipated to be priced roughly related. In distinction, the i211-AT goes for nearly $3.25 a pop. Intel is but to publish documentation that particulars software program options of the i225-V, however the Linux neighborhood is already on the job at creating drivers. 2.5 GbE makes use of present Cat5E/Cat6 cabling necessities as 1 GbE, and therefore has a greater likelihood at mainstreaming in comparison with 10 GbE, which has been round for a decade, with little success within the shopper phase.
