just got a q9450 but i think my temps are stuck on core's 3 and 4 should i return this cpu? and idle or load temps on core 3 and 4 always have the same temp its kinda bugging me if i have a diffective proc, any suggestion or info? and what safe temps should i have for a 24/7 setup idle and load?

core temp 0.99

--idle--
core #0 52c
core #1 49c
core #2 65c
core #3 65c

--load--
core #0 66c
core #1 62c
core #2 71c
core #3 71c

Real Temp 2.5

--idle--
core #0 42c
core #1 39c
core #2 54c
core #3 54c

--load--
core #0 57c
core #1 53c
core #2 62c
core #3 62c