Difference in power consuption Xeon E5 2630 V4 vs Xeon E5 2630L V4 low power server

[geforceGTX]

this is really interesting, at home I have a Acer 772G notebook with an Intel I7-4702MQ this means the low power version. I have a maximum power usage from 28,98 watt showing in HW-Monitor. A CPU benchmark with CPU-Z Show me a better performance result as the I7-4700MQ which is the standard 

• Intel I7-4702MQ = TDP 37 Watts power usage HW-Monitor = 28,98 Watts
  
• Intel I7-4702MQ = CPU-Z single core result 320,7 Multicore result 1510,4
  

• Intel I7-4700MQ = TDP 47 Watts power usage HW-Monitor = 32,31 Watts
  
• Intel I7-4700MQ = CPU-Z single core result 281,5 Multicore result 1405,9
  

So therefore, the lower TDP processor has a little bit less power usage but a better performance as the I7-4700MQ. I think the difference in the results is coming from the lower clock speed on the I7-4700MQ. The Acer has a better cooling solution, which allows the I7-4702MQ to run on a higher CPU clock speed. The result is for me lower TDP, higher clock speed, better performance but still less power consumption. I’m not sure if this only regarding the TDP difference?!