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Article Index
Twelve X58 Boards roundup
02 ASUS Rampage II Extreme
03 Biostar TPower X58
04 DFI Lanparty DK X58-T3eH6
05 DFI Lanparty JR X58-T3H6
06 Elitegroup X58B-A
07 eVGA X58 3X SLI
08 Foxconn Flaming Blade GTI
09 Foxconn Renaissance
10 Gigabyte GA-EX58-UD4
11 Gigabyte GA-EX58-UD5
12 Intel DX58SO
13 MSI Eclipse SLI
14 Multimedia Benchmarks
15 3DMark, FarCry2
16 Power-Consumption
17 Conclusion

Page 16 of 17

As usual our power-consumption test. This time you have to consider, all tests are done with C-States disabled. This prevents the CPU from going into "deep-sleep" which does increase the power-consumption in idle power.

i7 920:

i7 975:

The CineBench efficiency tests are very conclusive. The i7 is clock-by-clock the fastest CPU, but that's costly in terms of power consumption:

i7 920:

i7 975:

The i7 975 is much more efficent compared to the i7 975, but this may also the result because the i7 975 is D0 stepping compared to the C0 stepping of the i7 920.

This time we did also check power-consumption on the overclocked i7 920, so here is what you get, when you clock it at 3.46GHz which any board should manage easily.

As we have mentioned at the beginning of this review, it makes a difference if you enable or disable C-States. It will cost performance, but on the other hand it does save power, depanding on the board. We have tested with the ASUS and Biostar boards:

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