Gigabyte G1.Assassin2 Motherboard Review

Gigabyte brought the G1-Killer motherboard gaming series to the enthusiast community in early 2011, focusing on gaming features specifically in its design. Both the G1.Sniper and G.Assassin variants seemed to have become quick favorites with the avid gamers out there. In this review we will be looking at the X79 version of the G1-Killer series, the Gigabyte G1.Assassin 2.

G1.Assassin2 - Design by rezasam1
G1.Assassin2 – Design by rezasam1


Retail Packaging and Contents

G1.Assassin 2 - Box Front
G1.Assassin 2 – Box Front

G1.Assassin 2 - Box Back
G1.Assassin 2 – Box Back

The retail box has an intimidating military look with a green camouflage background and dry blood smears across the to end. The flaming skull clenching the bowie knife signifies that this board belongs to the G1-Killer series. The back of the box is packed with all the features that this top-end gaming board has, the detail of which we will cover further down in this review.

Inner Board Box
Inner Board Box

Accessories Box
Accessories Box

Board Top View
Board Top View

Board Accessories
Board Accessories

Opening the outer box you will find two smaller boxes; one contains the accessories and the other the motherboard which can be seen through a plastic window covering the top. Unpacking the motherboard you will notice the two tone black and green color scheme Gigabyte chose for this gaming board.

The accessories box includes the following

  • Sheet with stickers to put all over your gaming case
  • Huge Sniper fold-out poster
  • Extended CFX and SLI bridges as well as a tri-SLI bridge
  • WiFi/Bluetooth combo card with the two extended antennas
  • Four manuals which include: motherboard installation, users manual, WiFi and Bluetooth installation guides
  • Gigabyte driver CD for motherboard, plus one for WiFi
  • I/O back plate
  • Front USB 3.0 panel
  • Four SATA cables

Board Photo Shoot

Board Front View
Board Front View

Board Left View
Board Left View

Board Right View
Board Right View

CPU Socket and RAM slots
CPU Socket and RAM slots

PCIe Slots
PCIe Slots

Chipset Area
Chipset Area

Chipset "Pistol" Heat sink
Chipset “Pistol” Heat sink

VRM Heat Sink
VRM Heat Sink

IO Panel
IO Panel

SATA Ports
SATA Ports

Killer E2100 Chip
Killer™ E2100 Dedicated NPU

G1.Assassin 2 Board marking
G1.Assassin 2 Board marking

The PCB on this board is all black with the green PCIe and RAM slots breaking the darkness. Taking a view across the board you will notice only four RAM slots, hosting quad channel DDR3. The three PCIe 3.0 slots will give you access to two full PCIe x16 lanes when running two video cards in CrossFireX or SLI; adding another card will drop the lanes to x8, which is still plenty of bandwidth for any gaming card.

Looking at the VRM and chipset heat sinks you will see there is no doubt about the Killer theme here, the chipset has a small pistol as heatsink and the VRM is an air cooled rifle barrel. The SATA port section includes four SATA 3.0 and four SATA 2.0 ports which should be plent for gaming PCs. The board features an integrated Killer E2100 dedicated NPU, which is clearly marked on the board and is one of the main features of the gaming platform. To the lower left of the NPU is a collection of gold and green caps; these are Nichicon MUSE ES series (green) and MW series (gold) bi-Pplarized audio capacitors which should deliver high quality sound. Around these audio caps sits a 100% copper plate giving protection against other power interference resulting in improved EMI shielding, another feature that should ensure quality gaming sound.

The I/O panel on the back of the board carries your e-SATA ports, USB 2.0 and USB3.0 ports and well as a few powered USB ports to power your iPad or other devices. There is also a green/blue button set which allows you to switch between BIOSes. Only one LAN port is incorporated which is a bit odd given that this is a gaming top end board.

I did notice that there are no debug LED or reset/power buttons, which is something you would expect on a high end board. Then again, you might expect that gamers would tend to put their systems in gaming cases so they rarely need on board buttons. Below the BIOS switching buttons sits a small black button with which you can reset your CMOS in case you need to.

You will also notice a button marked “OC” that when pressed will instantly overclock your CPU to 4.0 GHz which will be plenty for most gaming systems.


The G1. Assassin 2’s main purpose is to combine the processing power of the SNB-E platform with some powerful gaming features that the G-Killer gaming series are known for. There are two main themes when looking at the features of the motherboard: “3D” which pertains to the power package and BIOS and “Super” which umbrellas the graphics capability, cooling solution, audio and game networking platform

First let’s take a look what 3D features the board brings to the SNB-E platform to drive the six headed LGA2011 CPU beast.

3D Power
3D Power

The G1.Assassin2 has an all new hardware and software-based Digital Power Engine which feeds power to both the PWM stacks and memory modules. The digital PWM controller from International Rectifier supports Dual VR12.5/VR12.0 Modes, which is a requirement for all future 22nm CPUs. Auto Voltage Compensation is present, which should feed a steady flow of power to the CPU and Memory. Digital power control dedicated to the two memory zones result in a real time PWM frequency adjustment. Built into this control feature is a OVP (Over Volt Protection) to protect the memory modules from frying. The control aspect also brings us LLC (Load Line Calibration) which we normally only get with CPU voltage control; this helps minimize v-droop to improve stability.

3D Power Utility
3D Power Utility

3D Voltage Control
3D Voltage Control

3D Phase Control
3D Phase Control

3D Frequency Control
3D Frequency Control

To fully utilize the 3D Digital features Gigabyte has included a nifty utility they call 3D Power control. The voltage control menu includes most of the voltage parameters which can be modified using the utility, including load line calibration for the CPU. OVP (Over Voltage Protection) can be adjusted to change the default protection range of the CPU, memory controller, and VTT as well as the system memory. Using the phase control menu users can calibrate OCP (Over Current Protection) for the CPU, integrated memory controller and system memory power levels. This allows the Phase control to deliver even more power to the system when required. GIGABYTE’s all-digital PWM allows for adjustable frequency control of the CPU, VTT, Integrated Memory Controller and both A/B and C/D Memory arrays.


GIGABYTE 3D BIOS™ is based on GIGABYTE UEFI DualBIOS™, which aims to make the BIOS more accessible and easier to use than ever. It incorporates both a 3D Mode and an Advanced Mode.

BIOS - 3D Logo
BIOS – 3D Logo

BIOS - 3D Mode Menus
BIOS – 3D Mode Menus

BIOS - 3D Mode Cont
BIOS – 3D Mode Cont

BIOS - 3D Mode Decription
BIOS – 3D Mode Decription

BIOS - 3D Mode Description 2
BIOS – 3D Mode Description 2

BIOS - Advanced Mode
BIOS – Advanced Mode

3D Mode aims to provide a graphical, intuitive BIOS experience which makes it easy to use and gives insight into how BIOS settings affect your PC’s performance. It gives you descriptions of the key areas and has menus that show options for CPU and Memory frequency controls. Additional help and suggestions in the lower panel help the user make the best choices for their system.Clicking the 3D BIOS logo reveals real-time CPU core, BCLK and Memory frequencies. Advanced Mode gives the user a comprehensive UEFI BIOS environment designed specifically for enthusiast overclockers and power users.

GIGABYTE DualBIOS™ features two physical BIOS ROMS mounted onto the motherboard. One chip acts as your “Main” BIOS, or the BIOS your system primarily uses during boot up. The second chip acts as a “Backup” BIOS and will automatically restore data to the main BIOS in case of malfunction.

Now let’s take a look what the board brings us under the “Super” set of features. There is a lot of detail on the Gigabyte product page so I will only bring light to the key ones here in this review

GIGABYTE G1.Killer series motherboards are the world’s only gaming motherboards to feature Creative’s top-of-the-line Soundblaster Digital Audio Processor (20K2) onboard with X-Fi Xtreme Fidelity® and EAX® Advanced HD™ 5.0 technologies. It has a whopping 128 Mb of dedicated memory for Creative Digital Audio Processing (20k2) to reduce the load on the CPU. The EAX® (Environmental Audio Extendion) is a collection of audio technologies which should appeal to gamers looking for good onboard sound. The EAX PurePath is designed to deliver accurate surround sound, while the EAX Voice will enable gamers to hear their voice with the same effects as the environment their character is in. Furthermore, if the game title supports “3D Voice Over IP” then other players in the game will be able to hear their voice coming from the correct direction.

This gaming board features the Bigfoot Networks Killer™ E2100 Game Networking Platform which contains Game Networking DNA™ software that offloads gaming data directly to the NPU by bypassing the Windows Network Stack, which is advertised to yield an up to 10% faster average ping than a traditional standard network interface. The board also has 4 SuperSpeed USB 3.0 ports (2 front panel, 2 back panel), and a 3x USB power boost on all USB ports for charging USB devices.

The GIGABYTE G1.Assassin 2 carries the “Locked and Loaded” theme across the cooling solution, it looks pretty dramatic with the golden skull clutching a bowie knife in it’s teeth on the pistol heatsink over the chipset. The heatsinks on the VRM and chipset have been modelled around common firearms issued to soldiers deployed to a warzone, including a pistol and machine gun; the heatpipe design on the VRM utilizes the same fluting technology you’d find on a machine gun barrel, which should aid heat dissipation.

Fan Headers
Fan Headers

The board has five strategically placed Smart Fan pin headers with individual thermal sensors which allow for more precise control of system and CPU fans further helping to eliminate heat.

With multi-GPU and PCIe Gen 3 support, GIGABYTE G1.Killer motherboards has plenty of capacity for video cards; as mentioned previously, the board has three PCIe 3.0 slots of which two operate at x16 and the third at x8, giving the gaming plenty of bandwidth to run up to three GPU beasts in either SLI or CrossFireX.

Below are the detailed specifications for those that want to get into the details.


(Courtesy of Gigabyte)

Intel Core
i7 processors in the LGA2011 package
Intel® X79 Express Chipset
  • 4 x 1.5V DDR3 DIMM sockets supporting up to 32 GB of system memory
    * Due to Windows 32-bit operating system limitation, when more than 4 GB of physical memory is installed, the actual memory size displayed will be less than 4 GB.
  • 4 channel memory architecture
  • Support for DDR3 2133/1866/1600/1333/1066 MHz memory modules
  • Support for non-ECC memory modules
  • Support for Extreme Memory Profile (XMP) memory modules
  • 1 x Creative CA20K2 chip
  • Support for Dolby® Digital Live and DTS™ Connect
  • Support for X-Fi Xtreme Fidelity® and EAX® Advanced HD™ 5.0 technologies
  • High Definition Audio
  • 2/4/5.1/7.1-channel
  • Support for S/PDIF Out
  • 2 x PCI Express x16 slots, running at x16 (PCIEX16_1/PCIEX16_2)
    * For optimum performance, if only one PCI Express graphics card is to be installed, be sure to install it in the PCIEX16_1 slot; if you are installing two PCI Express graphics cards, it is recommended that you install them in the PCIEX16_1 and PCIEX16_2 slots.
  • 1 x PCI Express x16 slot, running at x8 (PCIEX8)
    (All PCI Express x16 slots conform to PCI Express 3.0 standard.)
  • 2 x PCI Express x1 slots
    (All PCI Express x1 slots conform to PCI Express 2.0 standard.)
  • 1 x PCI slot
MULTI GRAPHICS CAPABILITYSupport for 3-Way/2-Way AMD CrossFireX™ / NVIDIA SLI technology.
  • Chipset:2 x SATA 6Gb/s connectors (SATA3 0/SATA3 1) supporting up to 2 SATA 6Gb/s devices
  • 4 x SATA 3Gb/s connectors (SATA2 2~SATA2 5) supporting up to 4 SATA 3Gb/s devices
  • Support for RAID 0, RAID 1, RAID 5, and RAID 10

* When a RAID set is built across the SATA 6Gb/s and SATA 3Gb/s channels, the system performance of the RAID set may vary depending on the devices being connected.
2 x Marvell 88SE9172 chips:

  • 2 x SATA 6Gb/s connectors (GSATA3 6/GSATA3 7) supporting up to 2 SATA 6Gb/s devices
  • 2 x eSATA 6Gb/s connectors (eSATA/USB Combo) on the back panel supporting up to 2 SATA 6Gb/s devices
  • Support for RAID 0 and RAID 1

  1. Up to 14 USB 2.0/1.1 ports (8 ports on the back panel, including 2 eSATA/USB Combo, 6 ports available through the internal USB headers)

2 x Fresco FL1009 chips:

  1. Up to 4 USB 3.0/2.0 ports (2 ports on the back panel, 2 ports available through the internal USB header)
  • 1 x 24-pin ATX main power connector
  • 1 x 8-pin ATX 12V power connector
  • 4 x SATA 6Gb/s connectors
  • 4 x SATA 3Gb/s connectors
  • 1 x CPU fan header
  • 4 x fan headers
  • 1 x front panel header
  • 1 x front panel audio header
  • 1 x S/PDIF Out header
  • 3 x USB 2.0/1.1 headers
  • 1 x USB 3.0/2.0 header
  • 1 x Clear CMOS jumper
  • 1 x Trusted Platform Module (TPM) header
  • PANEL 1 x PS/2 keyboard/mouse port
  • 1 x CPU overclocking button
  • 1 x BIOS switch button
  • 1 x Clear CMOS button
  • 1 x optical S/PDIF Out connector
  • 6 x USB 2.0/1.1 ports
  • 2 x USB 3.0/2.0 ports
  • 2 x eSATA/USB Combo connectors
  • 1 x RJ-45 port
  • 5 x audio jacks (Center/Subwoofer Speaker Out, Rear Speaker Out, Side Speaker Out, Line In/Mic In, Line Out)
  • System voltage detection
  • CPU/System temperature detection
  • CPU/System fan speed detection
  • CPU overheating warning
  • CPU/System fan fail warning
  • CPU/System fan speed control
    * Whether the CPU/system fan speed control function is supported will depend on the CPU/system cooler you install.
  • 2 x 64 Mbit flash
  • Use of licensed AMI EFI BIOS
  • Support for DualBIOS™
  • PnP 1.0a, DMI 2.0, SM BIOS 2.6, ACPI 2.0a
  • Support for @BIOS
  • Support for Q-Flash
  • Support for Xpress BIOS Rescue
  • Support for Download Center
  • Support for Xpress Install
  • Support for Xpress Recovery2
  • Support for EasyTune
    * Available functions in EasyTune may differ by motherboard model.
  • Support for Smart 6™
  • Support for eXtreme Hard Drive (X.H.D)
  • Support for ON/OFF Charge
  • Support for Cloud OC
  • Support for 3TB+ Unlock
  • Support for TouchBIOS
  • Support for Q-Share

Test Setup

Hardware Specifications
MotherboardGigabyte G1.Assassin 2 X79
CPUIntel i7-3930K
RAM4 x 2 GB G.Skill Sniper DDR3-1866
StorageOCZ Vertex 3 120 GB
OSWindows 7 Ultimate 64
PSUAntec TPQ-1200W
CoolingSwiftech Apogee XT with Thermochill TA120.3 rad, 6 fans

Test Setup - Top View
Test Setup – Top View

Test Setup - Side View
Test Setup – Side View

Overclocking Results

G1.Assassin2 - Boot Logo
G1.Assassin2 – Boot Logo

Duel EFI BIOS - Main Screen
Duel EFI BIOS – Main Screen

Advanced BIOS - MIT Screen
Advanced BIOS – MIT Screen

BIOS System Spec
BIOS System Spec

When you power up the board you will notice the lack of lights other than a green light close behind the first PCIe slot, it left me a bit disappointed as I have come to like the light show I normally see on other high end motherboards; it’s not a deal breaker, just a cosmetic thing.

Booting up the board you are greeted by the G1-Killer series flaming skull. A couple of taps on the “Del” button bring you to the 3D Dual EFI BIOS where you will get a view of the motherboard and all the key areas, this is the 3D BIOS mode and is useful for beginners and intermediate users. You can move your mouse over the various areas marked to enter the settings.

At the bottom you will see the Advanced menu options; clicking on any of the icons will open up advanced mode. This is the area that you would want to explore if you wish to take total control of your motherboard driving your system.

Touch BIOS Main Menu
Touch BIOS Main Menu

Touch BIOS CPU Settings
Touch BIOS CPU Settings

4.8 Ghz under load
4.8 Ghz under load

4.8 Ghz WPrime
4.8 Ghz WPrime

The X79 series have been out for a while so I’m not going through the basics of how to overclock your CPU. I had some trouble overclocking after I installed the Easy Tune6 Windows tool; for some reason I ended up at stock settings every time I booted up. Needless to say I did not use this piece of software to change any settings in Windows.

The board also comes with a piece of overclocking software called Touch BIOS. It looks great and has all the same settings in the various menus as the EFI BIOS, but sadly it does not work and the oveclock settings I tried did not stick after re-boot.

Getting to 4.5 GHz on the 3930k was a a piece of cake working in the UEFI. All I had to do was adjust the CPU Clock Ratio, voltage on the core, disable all the unnecessary power savings settings and save/exit the BIOS. Next stop was 4.8 GHz which ran at pretty decent voltage on the CPU and the temperatures under load were moderate on water cooling. I have to mention that the V-droop is noticeable as you can see under load running WPrime above.

5 Ghz WPrime
5 GHz WPrime

5 Ghz SPI 1M
5 GHz SPI 1M

The CPU/board topped out around 5.0 GHz – I just could manage to run a couple of benchmarks. For a board that is specifically designed for gaming, it is more than adequate to drive your favorite graphics card on the battlefield. Most of the gaming boards are limited as far as overclocking power and from what I’ve seen out there the G1.Assassin2 tends to max out around 4.8 GHz on the CPU.

Summary and Conclusions

The G1.Assassin2 is a solid board from a overclocking perspective; getting to 4.8 GHz was really not challenging and it managed to get to the golden 5 GHz. Couple that with the rich audio and networking features it should meet any pro-gamer’s needs. I did not test any of the “gamer” features as there is no benchmark for sound quality or networking speed and my gaming skills are pretty average so I cant judge whether the board will give you the edge at the next LAN party. The WiFi/Bluetooth combo is a nice feature and will enable you to connect remotely to your favorite devices and to the WiFi network if you so desire. From a looks perspective it has an intimidating look following the G1-Killer theme.

A few things that would have been nice add-ons are a debug LED and power/reset switch to help you along when on an open top benchmarking station. The Easy Tune6 and Touch BIOS software did not play nice with this board but driving the CPU through the full interactive EFI BIOS was as effective as any Sandy Bridge BIOS. Having only one LAN port on the IO panel was a bit odd as most gaming boards have two.

All in all the board is a solid board and I’m happy to allocate the stamp of approval.

~Edmund Meyer (Brolloks)

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Gigabyte brought the G1-Killer motherboard gaming series to the enthusiast community in early 2011, focusingon gaming featuresspecificallyin its design. Both the G1.Sniper and G.Assassin variants seemed to have become quick favorites with the avidgamersout there. In this review we will be looking at the X79 version of the G1-Killer series, the Gigabyte G1.Assassin 2.

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