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Gigabyte GA-Z77X-UD3H Intel Z77 Motherboard Review
Gigabyte GA-Z77X-UD3H Intel Z77 Motherboard Review  - PCSTATS
There's nothing finer than a new chipset to kick the summer off and this year it's the Intel Z77 Express. In this review PCSTATS will put the performance oriented Gigabyte GA-Z77X-UD3H motherboard, which is built on Intel's shiny new Z77 Express chipset, through its paces with the exceptionally popular 32nm 2nd Gen. Intel Core i3/i5/i7 'Sandy Bridge' processor.
 80% Rating:   
Filed under: Motherboards Published:  Author: 
External Mfg. Website: Gigabyte Apr 19 2012   Max Page  
Home > Reviews > Motherboards > Gigabyte GA-Z77X-UD3H

Overclocking Report and BIOS Walkthrough

Overclocking Results:
stock max. oc
cpu multiplier: x33 x47
motherboard blck: 1100 mhz

1600 mhz

if you're new to Overclocking and not sure what to do, check out these two excellent Guides for some pointers:
Overclocking the CPU and Memory
Overclocking the Videocard

Since Sandy Bridge CPUs hit the streets overclocking has taken a bit of a strange turn... If you were savvy enough to buy an unlocked Intel Core i5 2500K or 2600K CPU from the get-go, you probably already know the unlocked CPU multiplier will let you push these chips into the mid-4 GHz range with little effort. Owing to the integrated graphics on Sandy Bridge processors however, overclocking via the processor BCLK beyond about 105MHz isn't very practical.

Gigabyte's GA-Z77X-UD3H motherboard offers up a full range of CPU and IGP overclocking controls in the BIOS and within Windows 7 via TouchBIOS. Since BCLK overclocking is generally limited to 105MHz, PCSTATS left memory settings alone and focused on the CPU multiplier.

Starting from the default x33, PCSTATS pushed the CPU multiplier to x39, x42, x44 and x47 where the system crashed. The Core i5 2500K chip PCSTATS tests with generally maxes out at x47, so that's where our overclocking adventure stopped.

Since the Gigabyte GA-Z77X-UD3H motherboard is equipped with onboard video outputs PCSTATS had a go at overclocking the Intel HD 3000 IGP as well. From the stock IGP speed of 1100MHz, PCSTATS was able to overclock the Intel HD 3000 graphics core to 1600MHz without much difficulty.

Redundant BIOS chips prevent bad BIOS flashes from taking down the board.

Gigabyte's Dual UEFI BIOS

The UEFI '3D BIOS' user interface is intended to help novice PC users interact with complicated BIOS settings on friendlier terms, when you mouse over different bits of the board photograph, like the CPU area, memory or expansion slots, it bring up the relevant UEFI BIOS option menu. Advanced BIOS options are available at the bottom, which is where we'll be focusing our attention.

3D BIOS used on the Gigabyte GA-Z77X-UD3H

Main Overclocking and Frequency control menu for adjusting the CPU multiplier and BCLK frequency among other options are found in the Advanced Frequency Settings menu.

Advanced CPU Overclocking Tools

Advanced Memory settings

Intel Rapid Start Technology must be enabled in the BIOS if you want to use it.

The BIOS has extensive memory control options, timings can be set down to the individual clocks cycle, per channel.

Memory channel timing control.

There are a lot of voltage control options in the GA-Z77X-UD3H BIOS; for memory, chipset, CPU and motherboard VRM. There's also a slew of really advanced voltage controls available via Gigabyte's '3DPower' menu from the Windows desktop.

CPU Core Voltage controls

3D Power Voltage Controls

DRAM Voltage controls

Overclocking and onboard memory allocation for the Intel HD 3000 graphics on the 'SandyBridge' Intel Core i5 2500K processor.

Now let's look at how the Gigabyte GA-Z77X-UD3H motherboard handles in the benchmarks!

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Contents of Article: Gigabyte GA-Z77X-UD3H
 Pg 1.  Gigabyte GA-Z77X-UD3H Intel Z77 Motherboard Review
 Pg 2.  Overclocking Tools and Tweaks
 Pg 3.  Introducing the Intel Z77 Express Chipset
 Pg 4.  Testing Lucidlogix VirtuMVP
 Pg 5.  360-Degree Motherboard Gallery: Features and Layout
 Pg 6.  360-Degree Motherboard Gallery: Continued
 Pg 7.  — Overclocking Report and BIOS Walkthrough
 Pg 8.  Test System Hardware and Specs
 Pg 9.  Sysmark 2012 - Workstation Motherboard Benchmarks
 Pg 10.  PCMark Vantage Motherboard Benchmarks
 Pg 11.  SiSoft Sandra: CPU Motherboard Benchmarks:
 Pg 12.  Sandra: Memory Motherboard Benchmarks:
 Pg 13.  3DMark 11 Motherboard Benchmarks
 Pg 14.  3DMark Vantage Motherboard Benchmarks
 Pg 15.  IGP Motherboard Benchmarks: 3DMark Vantage, 3DMark06, FEAR, Juarez
 Pg 16.  IGP Motherboard Benchmarks: PCMark Vantage
 Pg 17.  Transcoding and Power Draw

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