ASRock Z77 Extreme4 Review

👤by David Mitchelson Comments 📅25-04-12
Test Setup & Overclocking




Benchmarks

Cinebench 11.5 – CPU Score
x264 HD 4.0 – 1st and 2nd pass encoding
SiSoftware SANDRA 2012 – CPU & Memory benchmarks
AIDA64 – CPU benchmarks
3DMark 11 – DX11 3D Performance and Extreme preset
Games – DIRT 3, Skyrim and Battlefield 3

Other Software
Core Temp
LinX stress Test
CPU-Z

Overclocking

As previously mentioned in our Intel Core i5 Sandy Bridge Roundup – overclocking with Ivy Bridge is identical to Sandy Bridge. It is achieved by altering the multiplier rather than the BCLK. So the BCLK stays at 100MHz and the multiplier is modified. So if we have 100MHz on the BCLK and 40 for the multiplier this will obviously output 4GHz.

For this section of the review the maximum overclock was achieved by using the Intel Core i5 3750K and monolith CPU cooler – Alpenfohn K2 with 2x 120mm and 1x 140mm fans. The multiplier for Core i5-3570K was nudged up in small increments starting with 43 and upon booting into windows LinX was run 5 times in order to observe temperatures and confirm stability.

The 3750K managed to overclock up to 48 – 4.8GHz from 3.40GHz, a 41% overclock. This is a significant increase and required 1.38 vcore and PLL overvoltage enabled. I pushed for the 5GHz milestone but sadly the temperatures increased far too high under load when nudging up vcore to achieve such a frequency. The temperatures rose to over 90*C.



This maximum overclock will be used throughout our benchmarks – as well as stock 3570K frequency with turbo boost enabled.

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