utroz

Actually DDR3 should be faster by a bit at the same speeds and timings due to the design of DDR4. This has always been true since going from DDR to DDR2, and DDR2 to DDR3 (and maybe even before like FPM to EDO and SDR to DDR..)

If both computers are hooked up to the same WIFI LAN then it should work just fine over WIFI. Ethernet might be faster but WIFI is way more convenient. Also you should not have to take the WIFI card out to use the Ethernet port as you can use both at the same time.