The dimensions and design of the box with this mainboard are almost the same as the previous model’s, except that the letter Z is now highlighted in green rather than blue.
This model comes with exactly the same accessories:
- Four SATA cables with metal connector locks, two with L-shaped locks and another two with straight ones;
- A flexible bridge for two-way SLI graphics configurations;
- I/O Shield for the back panel;
- User manual;
- A booklet with brief assembly instructions in 18 languages;
- A leaflet warning the users that the board is incompatible with LGA1156 processors;
- DVD disk with software and drivers;
- “Dolby Home Theater” and “Gigabyte” logo stickers for the system case.
The Gigabyte GA-Z68X-UD4-B3 is visually similar to the previous model, too. However, we can spot a few significant differences between them.
First off, the number of power phases in the CPU voltage regulator is increased from 12 to 16, and one PCI Express 2.0 x1 slot is now missing as the consequence. This is the only deficiency compared to the previous model. The rest of the functions are expanded and improved. The two heatsinks on the CPU voltage regulator components are now connected with a heat pipe. For more differences, we should look at the mainboard’s back panel which now offers a coaxial S/PDIF and eSATA ports, one of which is an eSATA/USB combo and can power the connected device. The combo connector can also be used as an ordinary USB 2.0 port.
Here is a full list of the mainboard’s back-panel connectors:
- PS/2 connector for keyboard or mouse;
- Eight USB 2.0 ports including one eSATA/USB Combo, six more are laid out as three onboard pin-connectors;
- Two USB 3.0 ports (blue connectors) implemented via EtronTech EJ168A controller; a second controller like that provides two additional internal USB 3.0 ports;
- IEEE1394 (FireWire) port implemented via VIA VT6308P controller, a second port is available as onboard pin-connector;
- Two eSATA 3 Gbps ports including one eSATA/USB Combo implemented via Marvell 88SE9172 controller;
- A local network port (network adapter is built around Gigabit Realtek RTL8111E controller);
- Optical and coaxial S/PDIF together with six analogue audio-jacks provided by eight-channel Realtek ALC889 codec.
That’s all the differences between the two models. Their bottom parts are identical in design as well as components.
The Gigabyte GA-Z68X-UD4-B3 is an improved version of the previous model with some added features. So, you can refer to the summary I've given above about the GA-Z68X-UD3P-B3, subtract one PCI Express 2.0 x1 slot and add the extra power phases, coaxial S/PDIF, and two eSATA 3 Gbps ports (one of which is an eSATA/USB combo). The next model is significantly different from these two, though.