Since we know the Sandy Bridge chips’ overclocking abilities are limited by the CPU multiplier and very little of the board itself, pushing a nominally higher bus speed is pointless for the most part on 1155 boards. We’re interested in finding out if the board can push the maximum multi that our CPU is capable of. Perhaps more importantly in this instance, we were very curious to see what they would produce on the Biostar TZ77XE4.
Below is our test setup:
- Processor: Intel Core i7 2600K
- Motherboard: Biostar TZ77XE4
- PSU: Nexus 1100W
- Cooling: Custom Water
- Hard Drive: OCZ 120G Vertex 3
- Memory: Visiontek Ultimate 16GB DDR3 1866MHz
- Graphics: Dual Radeon 6970Overclocking the 2600K is not much of a secret. There is very little wiggle room in the BCLCK so overclocking happens via the multiplier. Cooling does not make a substantial difference as the 2600K overclocking potential is limited by the processor itself. Some get lucky and get chips that reach in excess of 5.1GHz and some don’t.
Core speed of the Intel Core i7 2600K is 3.4GHz. Turbo will automatically bring the processor up to 3.8GHz.
As mentioned earlier, each Sandy Bridge CPU’s will have an overclock limit. Also, overclocking the platform is as easy as 1-2-3. We dialed in 53 for the multiplier and raised the voltage just short of 1.6v (which is not recommended for daily use) and reaped 5.3GHz which is a high overclock for our 2600K. WOW! The Biostar TZ77XE4 really has some overclocking potential. We rang up 100MHz over our personal 2600K’s high overclock. Very impressive.
As a side note: The 5.3GHz overclock was not a suicide overclock as we were able to run some benchmarks.
We also want to note that overclocking voids the warranty and at higher overclocks, good cooling is a must. Pushing the temperatures on any CPU can lead to a very short life.
Let’s wrap things up.