Quote Originally Posted by accord99 View Post
Not significantly more:

http://www.anandtech.com/cpuchipsets...spx?i=3453&p=3

i7 920 uses 10W more than a C2Q 9450 which has full load power consumption of around 50W. Since games don't generally fully tax CPU, the full load system power consumption doesn't provide a necessarily accurate picture of the power usage while gaming.


K10 is bad because it neither had performance, performance/watt or power usage. Much the same way Prescott was bad.
I believe the measurements shown in the anandtech article are inaccurate. Here is an explanation of potential measurement error on Nehalem processors by LostCircuits:
In our initial article about the Core i7, codename Nehalem, we were stunned by the power efficiency of Intel’s new CPU, particularly, as we stated, since the measured processor power consumption also comprised that of the memory controller – a saving on the system level of somewhere in the order of 15-20W under load. In the course of numerous discussions, it became obvious that the numbers we measured did not quite add up to the thermal load. After the embargo on the Core i7 was lifted, data sheets became available proving our assumptions wrong, in that the memory controller was NOT part of the power we measured through the VRMs. At the same time, CanardPC and several other websites like HardTecs4U posted additional information regarding the overall power configuration of the Nehalem CPU, which is somewhat different from what we have come to know in the past from CPUs offered by Intel or AMD.