Buffer chaining offers improved efficiency, which is especially evident when smaller packet sizes are transmitted. For example, to queue a 64-byte packet, a card with a fixed buffer of 2304 bytes allocates 2304 bytes, whereas a card with a fixed buffer of 512 bytes allocates only 512 bytes. To queue a 1280-byte packet, a card with a fixed buffer of 2304 bytes allocates 2304 bytes, whereas a card with a fixed buffer of 512 bytes allocates only 1536 bytes (that is, 512 bytes ✕ 3 buffers).