accuracy of i7z using haswell i7-3790k

[graysky2]

Can you comment on the accuracy of the temp readings for this i7-4790K running at stock settings on an MSI Z97 MPOWER MAX motherboard? Here I am running prime95 using small FFTs.

The temps are ~25C higher than windows tools report running the same prime95 small FFTs.

Small FFTs prime95 windows:

Small FFTs mprime linux:

% sudo i7z
i7z DEBUG: i7z version: svn-r93-(27-MAY-2013)
i7z DEBUG: Found Intel Processor
i7z DEBUG:    Stepping 3
i7z DEBUG:    Model c
i7z DEBUG:    Family 6
i7z DEBUG:    Processor Type 0
i7z DEBUG:    Extended Model 3
i7z DEBUG: msr = Model Specific Register
i7z DEBUG: Detected an i7 - 22nm (haswell)
i7z DEBUG: msr device files exist /dev/cpu/*/msr
i7z DEBUG: You have write permissions to msr device files

------------------------------
--[core id]--- Other information
-------------------------------------
--[0] Processor number 0
--[0] Socket number/Hyperthreaded Sibling number  0,4
--[0] Core id number 0
--[0] Display core in i7z Tool: Yes

--[1] Processor number 1
--[1] Socket number/Hyperthreaded Sibling number  0,5
--[1] Core id number 1
--[1] Display core in i7z Tool: Yes

--[2] Processor number 2
--[2] Socket number/Hyperthreaded Sibling number  0,6
--[2] Core id number 2
--[2] Display core in i7z Tool: Yes

--[3] Processor number 3
--[3] Socket number/Hyperthreaded Sibling number  0,7
--[3] Core id number 3
--[3] Display core in i7z Tool: Yes

--[4] Processor number 4
--[4] Socket number/Hyperthreaded Sibling number  0,0
--[4] Core id number 0
--[4] Display core in i7z Tool: No

--[5] Processor number 5
--[5] Socket number/Hyperthreaded Sibling number  0,1
--[5] Core id number 1
--[5] Display core in i7z Tool: No

--[6] Processor number 6
--[6] Socket number/Hyperthreaded Sibling number  0,2
--[6] Core id number 2
--[6] Display core in i7z Tool: No

--[7] Processor number 7
--[7] Socket number/Hyperthreaded Sibling number  0,3
--[7] Core id number 3
--[7] Display core in i7z Tool: No

Socket-0 [num of cpus 4 physical 4 logical 8] 3,
Socket-1 [num of cpus 0 physical 0 logical 0] 
GUI has been Turned ON

Cpu speed from cpuinfo 3999.00Mhz
cpuinfo might be wrong if cpufreq is enabled. To guess correctly try estimating via tsc
Linux's inbuilt cpu_khz code emulated now
True Frequency (without accounting Turbo) 3999 MHz
  CPU Multiplier 40x || Bus clock frequency (BCLK) 99.97 MHz

Socket [0] - [physical cores=4, logical cores=8, max online cores ever=4]
  TURBO ENABLED on 4 Cores, Hyper Threading ON
  Max Frequency without considering Turbo 4098.97 MHz (99.97 x [41])
  Max TURBO Multiplier (if Enabled) with 1/2/3/4 Cores is  44x/44x/44x/44x
  Real Current Frequency 4233.51 MHz [99.97 x 42.35] (Max of below)
        Core [core-id]  :Actual Freq (Mult.)      C0%   Halt(C1)%  C3 %   C6 %   C7 %  Temp      VCore
        Core 1 [0]:       4233.50 (42.35x)      99.8       0       0       0       0    95      1.2809
        Core 2 [1]:       4233.51 (42.35x)      99.8       0       0       0       0    99      1.2798
        Core 3 [2]:       4233.51 (42.35x)      99.8       0       0       0       0    98      1.2798
        Core 4 [3]:       4233.50 (42.35x)      99.8       0       0       0       0    89      1.2826