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Gigabyte GA-Z68X-UD5-B3 Intel Z68 Motherboard Review
Gigabyte GA-Z68X-UD5-B3 Intel Z68 Motherboard Review - PCSTATS
Meet the Gigabyte GA-Z68X-UD5-B3 motherboard, a non-integrated graphics take on the new Intel Z68 chipset. While the Intel Z68 is reknown for combining the best the Intel P67 & H67 chipsets had to offer in one platform...
 88% Rating:   
Filed under: Motherboards Published:  Author: 
External Mfg. Website: Gigabyte Dec 30 2011   Max Page  
Home > Reviews > Motherboards > Gigabyte GA-Z68X-UD5-B3

Overclocking on the Intel Z68 Chipset

Overclocking Results:
stock max. oc
cpu multiplier: x33 x47
motherboard blck: 1000 mhz

1048 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 the first Intel 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 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, overclocking via the processor BCLK turned out to be an exercise in futility however. If you don't have an unlocked Sandy Bridge processor there's not much room to push a BLCK beyond about 104.8MHz.... TurboCore does what it does, and you've learned to be happy with that.

With the previous generation of Intel P67 motherboards, overclocking was easy. Intel H67 motherboards for the most part lack even basic overclocking options, so if you ended up combining an H67 board with a K-series chip someone really cheated you at the computer store.

The Intel Z68 chipset combines the best of the Intel P67 and H67 chipsets into one platform, and let's face it... puts the final nail in the coffin of both. Not all Z68 boards offer the video output jacks, but those that do give you full overclocking control of both the processor and integrated graphics clock speed.

Gigabyte's GA-Z68X-UD5-B3 motherboard offers up a full range of CPU overclocking controls in the BIOS and from within Windows via the new TouchBIOS interface. Since BCLK overclocking is generally limited to 105MHz, PCSTATS left memory settings alone and focused on the CPU multiplier. Starting from the default x33 multiplier, PCSTATS pushed this to x45... x46... x47... x48 before the system crashed loading into Windows 7.

Without tweaking any voltage settings the Gigabyte GA-Z68X-UD5-B3 motherboard could post at a x48 multiplier. The maximum stable overclock was x47 or 4.7GHz for the test Intel Core i5 2500K (3.3GHz) processor.

Since Gigabyte's GA-Z68X-UD5-B3 motherboard does not feature onboard video ports there are no integrated graphics overclocking options in the BIOS. Next up, the complete PCSTATS motherboard benchmark suite compares the Intel Z68 against Intel P55, P67, X58 and AMD 890FX based platforms.

Test System Specifications

The details of how the Gigabyte GA-Z68X-UD5-B3 motherboard was configured for benchmarking, including specific hardware, software drivers, operating system and benchmark versions are all indicated below. Other columns list the general specs of the current and legacy reference platforms. Please take a moment to look over PCSTATS test system configurations before moving on to the individual benchmark results.

Gigabyte GA-Z68X-UD5-B3 Motherboard

PCSTATS Test System Configurations
test system - intel core i5 2nd generation reference system reference system reference system

intel core i5 2500k

intel Core i5 750

AMD Phenom II X6 1090T

Intel Core i7 920
Clock Speed: 33 x 100 MHz = 3.3 GHz 20 x 133 MHz = 2.66 GHz 16 x 200 MHz = 3.2 GHz 20 x 133 MHz = 2.67 GHz
Socket: Socket LGA1155 Socket LGA1156 Socket AM3 / AM2+ Socket LGA1366
Motherboard: - Intel Z68 -
Gigabyte GA-Z68X-UD5-B3
Gigabyte GA-Z68X-UD3H-B3

- Intel P67 -
Gigabyte GA-P67A-UD7
Gigabyte GA-P67A-UD7-B3
Gigabyte GA-P67A-UD4
ASUS P8P67 Pro

- Intel H67 -
Biostar TH67XE
Intel DH67BL

- Intel P55 -
Gigabyte GA-Z68X-UD5-B3 *
Gigabyte GA-P55-UD6
Gigabyte GA-P55-UD5
Gigabyte GA-P55A-UD4P *
Gigabyte GA-P55-UD3R
ASUS P7P55D Premium *
ASUS P7P55D Deluxe

- AMD 890FX -
ASUS Crosshair IV Formula
Biostar TA890FXE
Gigabyte GA-890FXA-UD7

- AMD 790FX -
Gigabyte GA-MA790FXT-UD5P

- AMD 785G -


Gigabyte G1.Assassin (X58)
MSI Eclipse Plus (X58)
Videocard: Gigabyte GV-N470SO-13I (Geforce GTX470)

(Geforce GTS250)

Memory: 2x 2GB Crucial Ballistix DDR3-1600

2x 2GB Corsair XMS3-1600C9

2x 2GB Corsair XMS3-1600C8

3x 2GB Corsair TR3X6G1600C8D DDR3
Memory Speed: DDR3-1333 DDR3-1333 DDR3-1066 DDR3-1066
120GB OCZ Vertex2 SSD (3GB/s SATA II)
Intel SRT Tests: 74GB Western Digital Raptor WD740 & 20GB Intel Larson Creek 311 SSD

74GB Western Digital Raptor WD740 (3GB/s SATA II)
2TB Segate Barracuda XT (6GB/s SATA III) * for Marvell 9128 Compliant boards

Optical Drive: Plextor PX-B310U Blu-Ray


Power Supply: Seasonic SS-760KM (760W)

PC Power & Cooling TurboCool 750W


Intel Reference LGA1155 Heatsink

Intel Reference LGA1156 Heatsink

Athlon64 K8 Reference Heatsink Intel Reference LGA1366 Heatsink
Monitor (1080p): ASUS MK241 24" HD LCD
Software Setup:

Microsoft Windows 7 Ultimate 32-bit
nVIDIA 266.58

Microsoft Windows Vista Ultimate 32-bit
nVIDIA Forceware 190.62

Microsoft Windows Vista Ultimate
AMD Catalyst 9.12
nVIDIA Forceware 195.62

Microsoft Windows Vista Ultimate
Intel INF
nVIDIA Forceware 182.08

System Benchmarks:
SYSmark 2007
PCMark Vantage
SiSoft Sandra 2011

Gaming B/M:
3DMark 11
3DMark Vantage
3DMark 06

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Contents of Article: Gigabyte GA-Z68X-UD5-B3
 Pg 1.  Gigabyte GA-Z68X-UD5-B3 Intel Z68 Motherboard Review
 Pg 2.  The LucidLogix Virtu Question + Intel Z68 Chipset
 Pg 3.  Guide: Setting Up Intel SRT
 Pg 4.  Testing Intel SRT: PCMark Vantage HDD Suite
 Pg 5.  360-Degree Motherboard Gallery: Features and Layout
 Pg 6.  360-Degree Motherboard Gallery: Connectivity
 Pg 7.  Introducing Gigabyte Touch BIOS
 Pg 8.  — Overclocking on the Intel Z68 Chipset
 Pg 9.  Sysmark 2007 Motherboard Benchmarks
 Pg 10.  SiSoft Sandra: CPU Motherboard Benchmarks:
 Pg 11.  Sandra: Memory Motherboard Benchmarks:
 Pg 12.  PCMark Vantage Motherboard Benchmarks
 Pg 13.  3DMark 11 Motherboard Benchmarks
 Pg 14.  3DMark Vantage Motherboard Benchmarks
 Pg 15.  3DMark 06 Motherboard Benchmarks
 Pg 16.  FEAR Motherboard Benchmarks
 Pg 17.  System Power Draw and Final Conclusions

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