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Gigabyte GA-EP45-DQ6 motherboard LGA 775 (Socket T) ATX

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The motherboard or mainboard is the component that connects all the different parts of your computer. Often it has some integrated components like a sound card, enabling your computer to play sound, or a network card, to connect your computer to the network. The standard form factor (size) for motherboards is ATX, you need at least a midi-tower to fit one of those in. Micro-ATX motherboards are often more complete and have more onboard devices, like a video board and fit in smaller cases, but are generally less expandable.
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Included since: 24 May 2008
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Info modified on: 11 Dec 2018 15:29:59
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Long product name Gigabyte GA-EP45-DQ6 motherboard LGA 775 (Socket T) ATX :
The short editorial description of Gigabyte GA-EP45-DQ6 motherboard LGA 775 (Socket T) ATX

Gigabyte GA-EP45-DQ6 motherboard LGA 775 (Socket T) ATX:
The official marketing text of Gigabyte GA-EP45-DQ6 motherboard LGA 775 (Socket T) ATX as supplied by the manufacturer

Based on the new Intel P45 chipset, GA-EP45-DQ6 delivers a record setting 1600MHz Front Side Bus for the latest Intel® Core 2™ multi-core processors, including 45nm CPUs. With supporting dual channel DDR2 up to 1200MHz, GA-EP45-DQ6 motherboard provides the highest levels of performance and maximum overclocking potential. In additional, GA-EP45-DQ6 is further equipped to support ATI CrossFireX™ Technology with dual PCI Express 2.0 x8 interfaces, delivering double the PCI Express bandwidth of 5 Gbit/s for the ultimate in extreme gaming performance. GA-EP45-DQ6 delivers several advanced GIGABYTE innovations including the DES Advanced, Ultra Durable 2, Ultra TPM design which provide optimized power savings, ultra cooling and ultra secure data protection.

Smaller, Faster and More Efficient.
GA-EP45-DS5 motherboards paired with Intel 45nm CPUs deliver the very best platform for multitasking, multimedia and high performance gaming. Not only do GIGABYTE's latest motherboards based on Intel Eaglelake chipsets all support Intel's new generation, 45nm multi-core processors.

Dual Channel DDR2 1200.
Experience the advanced technology of DDR2 1200 memory, featuring faster speeds and higher data bandwidth, which delivers superior performance for the most demanding applications.

PCI-E 2.0 Graphic Interface.
PCI-E 2.0 doubles the bus standard's bandwidth from 2.5 Gbit/s to 5 Gbit/s, meaning a x32 connector can transfer data at up to 16 GB/s in each direction. PCIe 2.0 also features improvements to the point-to-point data transfer protocol and its software architecture.

ATI CrossFireX.
With support for ATI CrossFireX, GIGABYTE pushes the envelope once again by delivering highly optimized performance and flexibility demanded by power users and extreme gaming enthusiasts. Designed to provide unmatched multi-GPU support with dual PCI Express connectivity, the GA-EP45-DS5 allows users to take advantage of the ultra smooth 3D rendering, blazing-fast frame rates and enhanced visual quality possible with a dual graphics card solution.

Dolby Home Theater® - Enjoy a Rich Home Theater Surround Sound Experience.
Dolby Home Theater places listeners in the middle of the action, giving their PCs a powerful set of tools to deliver a cinema-style experience in vivid surround sound.

- Delivers vivid surround sound for music, movies, and games, using two to eight speakers or any set of headphones.
- Designed to automatically deliver the best possible listening experience.

Dynamic Energy Saver Advanced.
GIGABYTE Dynamic Energy Saver Advanced provides better energy saving capabilities and enhanced system performance. GIGABYTE Dynamic Energy Saver Advanced is the world's only motherboard energy saving technology with hardware-based Dynamic 6-Gear Switching. With support for VRD 11.1, GIGABYTE’s DES Advanced allows the motherboard to switch to 1 Gear phase switching during idle, allowing for a dramatic increase in power savings.

GIGABYTE has also retooled Dynamic Energy Saver to allow overclockers to experience the benefits of multi-gear power phase switching while overclocking, providing ultra stable, ultra smooth overclocking performance.

Ultra Durable 2 -Designed with Top Quality Highly Efficient Components.

- Ultra Cooling - Low RDS(on) MOSFET Design.
Low RDS(on) MOSFETs specially designed to produce lower switching resistance for faster electric current charging and discharging.

- Low Power Loss - Ferrite Core Choke Design.
Ferrite core chokes comprised of a compound of iron oxide and other metal elements whose properties hold energy much longer than common iron core at high frequency.

- Longer Life - All-Solid Capacitor Design.
Solid capacitors contain a solid organic polymer, while electrolytic capacitors use a common liquid electrolyte, hence, the terms solid capacitor versus electrolytic capacitors.

Ultra TPM - Industry’s highest level of data Security via onboard TPM.

- Maximum level of data protection with 2048 bit encryption.
- Security, manageability and flexibility that surpasses software-based encryption.
- Portable User Key to protect data when away from your system.
- Additional backup of user key in BIOS in case of misplaced key.

High Velocity 2X Bandwidth Boost.
The Dual LAN with Teaming functionality enabled allows 2 single connections to act as 1 single connection for 2x Bandwidth, improving overall throughput.

Prevents network downtime by transferring the workload from a failed port to a working port.

Receive Side Scaling balances the network traffic load evenly between 2 CPU cores in order to improve performance.

Adjusts power consumption automatically according to your LAN cable lengths, up to 10% power savings.

Hardware Overvoltage Control ICs.
Hardware Overvoltage Control ICs which provide more voltage control options than before for the CPU North Bridge and memory. The overvoltage controllers also provide hardware linear real-time voltage control. In addition, Hardware Overvoltage Controller ICs also allow for much finer voltage control, allowing power users to adjust voltage in as little increments as 20mV for better overclocking performance.

GIGABYTE has completely redesigned EasyTune6 from the ground up to make it easier than ever to manage and monitor your hardware resources as well as tweak your system settings in order to achieve maximum system performance. Whether you are an overclocking enthusiast, or a computer novice, EasyTune6 provides the tools you need to quickly and effortlessly fine tune your system.

Smart Backup- Plug & Play Hardware RAID.
GIGABYTE’s Smart Backup allows users to connect up to 4 Serial ATA devices for effortless RAID data protection. Dual onboard RAID controller chips automatically configure RAID setup without user intervention, making it easier than ever for users to enjoy enhanced data transfer performance, low CPU utilization, real-time backup on-the-fly and protection against HDD failure.

DualBIOS™ - Patented Dual Hardware BIOS Protection.
DualBIOS™ is a GIGABYTE patented technology that automatically recovers BIOS data when main BIOS has crashed or failed. Featuring 2 physical BIOS ROMs integrated onboard, GIGABYTE DualBIOS™ allows quick and seamless recovery from BIOS damage or failure due to viruses or improper BIOS updating.

Onboard Diagnostic LEDs - Hardware Troubleshoot at a Glance.
7 Onboard LEDs controlled by the system BIOS indicate if a malfunction is occurring, allowing users to directly see where the problem is occurring, so they can quickly take question.

Onboard ACPI LEDs - Power Status Indicators to avoid improper hardware removal.
The Advanced Configuration and Power Interface (ACPI) gives the operating system direct control over the power management. There are 4 embedded LEDs onboard to indicate system power status to prevent potential H/W damage due to improper plug/unplug actions.

Onboard Quick Switches.
Onboard Power, Clear CMOS and Reset buttons allow for quick and easy tweaking for power users working in an in chassis environment.

Short summary description Gigabyte GA-EP45-DQ6 motherboard LGA 775 (Socket T) ATX:
This short summary of the Gigabyte GA-EP45-DQ6 motherboard LGA 775 (Socket T) ATX data-sheet is auto-generated and uses the product title and the first six key specs.

Gigabyte GA-EP45-DQ6, 16 GB, Intel, LGA 775 (Socket T), 0, 1, 10, Realtek RTL8111C, 10/100/1000 Mbit

Long summary description Gigabyte GA-EP45-DQ6 motherboard LGA 775 (Socket T) ATX:
This is an auto-generated long summary of Gigabyte GA-EP45-DQ6 motherboard LGA 775 (Socket T) ATX based on the first three specs of the first five spec groups.

Gigabyte GA-EP45-DQ6. Maximum internal memory: 16 GB. Processor manufacturer: Intel, Processor socket: LGA 775 (Socket T). RAID levels: 0, 1, 10. LAN controller: Realtek RTL8111C, Networking features: 10/100/1000 Mbit. Motherboard form factor: ATX, Audio output channels: 7.1 channels, Audio chip: Realtek ALC889A

Number of memory slots
Maximum internal memory
16 GB
Processor manufacturer *
Processor socket *
LGA 775 (Socket T)
Storage controllers
RAID levels
0, 1, 10
Internal I/O
USB 2.0 connectors *
Number of Parallel ATA connectors *
Number of SATA connectors
S/PDIF out connector
Front panel audio connector
CD/AUX audio in
ATX Power connector (24-pin)
Power fan connector
CPU fan connector
Number of chassis fan connectors
Chassis intrusion connector
Number of IEEE1394 connectors
Internal I/O
Floppy disk drive connector
Back panel I/O ports
USB 2.0 ports quantity *
USB 2.0 ports have a data transmission speed of 480 Mbps, and are backwards compatible with USB 1.1 ports. You can connect all kinds of peripheral devices to them.
Ethernet LAN (RJ-45) ports *
PS/2 ports quantity *
Headphone outputs
S/PDIF out port
LAN controller
Realtek RTL8111C
Networking features
10/100/1000 Mbit
Motherboard form factor *
Audio output channels *
7.1 channels
Audio chip
Realtek ALC889A
BIOS type *
BIOS memory size
64 Mbit
Power source type
Other features
Compatible operating systems
Windows Vista/XP
Expansion slots
Expansion slots
1 x PCIE x16 1 x PCIE 2.0 x8 2 x PCIE x4 1 x PCIE x1 2 x PCI
Source Testseek summary Average rating
2011-08-10 02:42:27
Testseek has collected 22 expert reviews for Gigabyte GA-EP45-DQ6 motherboard LGA 775 (Socket T) ATX and the average expert rating is 86 of 100. The average score reflects the expert community’s view on this product. Click below and use Testseek to see all ratings, product awards and conclusions.
Source Review comments Score
2011-11-04 15:09:48
When you first lay eyes on a DQ6 board, you become almost rapt with the multitude of components arranged in a zen-garden-like fashion that blanket every piece of every flat surface. As the premium offering from GIGABYTE, we can only expect good things...
Bottom line Theres just about everything on here that an enthusiast may desire...
2011-11-04 15:09:50
Good layout...
Bad Expensive (but worth it if you need all of the features), Wish there was an option to disable the onboard LEDs in the BIOS, Not enough temperature and voltages readouts/sensors, Some SATA ports blocked when a graphics cards is installed in the second PCIE...
Bottom line At the start of this review we asked whether Gigabyte had created the complete package with the EP45-DQ6…a fast, fully-featured, overclockable, stable motherboard with no show-stopping faults. Now, after our exhaustive review, we can state that they ha...
2015-05-22 05:58:59
The midrange to high end motherboard market is filled with products. These high-midrange boards are very popular among enthusiasts for its abundance of features, performance, and a not-too-out-of-the-world price tags. Sure, boards like the Asus Strik...
2016-12-27 23:07:51
The order of the day is all about a feature packed motherboard from Gigabyte based on the Intel P45 chipset, the EP45-DQ6. It rounds up to being the perfect motherboard for all users thanks to having almost everything one would need. We also recently r...
Bottom line The Gigabyte EP45-DQ6 has proven to be one of the best Intel P45 motherboards that we have encountered our lab thanks to some amazing onboard features. The four Ethernet ports and ten SATA ports on board make this board a perfect board for a file serve...
2011-08-10 02:42:27
Nach einer ermüdenden Anreise, einer hochinteressanten Fabriktour (Infos folgen) und drei Präsentationen (Intel, Infineon und Realtek) bekamen wir im Gigabyte-Hauptquartier unser erstes Testpaket: Das vorläufige P45-Topmodell EP45-DQ6 samt Core 2 Extre...
Bottom line P45-Platinen von Gigabyte Mit der EP45-Reihe bietet Gigabyte offenbar wieder für jeden Anspruch die passende Platine. Bald folgt zudem das EP45-Extreme für Extrem-Übertakter. Die Overclocking-Einstellungen der vier getesteten Platinen waren aber berei...
2011-08-10 02:41:43
Seguimos con nuestros trabajos sobre placas base, y de nuevo de la mano de Gigabyte podemos presentaros una de sus placas base basadas en chipsets Intel y con soporte para la plataforma LGA775.En esta ocasión tenemos una placa base que también podríamo...
Bottom line Después de estar trabajando un tiempo con la GA-EP45-DQ6 tenemos sentimientos encontrados. Esta es una placa base de gama alta si tenemos en cuenta las tecnologías que incorpora, su completa BIOS, las posibilidades de overclock o su impecable si...
2011-08-10 02:42:12
Gigabyte es una marca que no necesita introducción. Ya se han revisado anteriormente productos Gigabyte con excelentes resultados, y en esta ocasión no es la excepción. Tomese en cuenta que Gigabyte es la segunda empresa potencia de motherboards en...
Good Motherboard de altísimo nivel, con buen rendimiento, Uso del Chipset Intel P45 ExpressICH10, Modo de Crossfire soportado de manera fácil, Ultra TPM, SMART Backup y RAID fácilmente configurables, Desktop Energy Saver Advanced con buena efic...
Bad Dual BIOS aun falta madurar (aun que es confiable), Precio algo alto para la mayoría de los usuarios, DES pierde la eficiencia con el Overclock...
Bottom line Ok, tengo que admitirlo. Este motherboard es excelente producto para lo que ofrece. Las funciones exclusivas de Gigabyte además de todas las características propias son algo que para una persona entusiasta, que gusta de facilitarse la vida y de...
2011-08-10 02:41:44
The order of the day is all about a feature packed motherboard from Gigabyte based on the Intel P45 chipset, the EP45-DQ6. It rounds up to being the perfect motherboard for all users thanks to having almost everything one would need. We also recently r...
Bottom line The Gigabyte EP45-DQ6 has proven to be one of the best Intel P45 motherboards that we have encountered our lab thanks to some amazing onboard features. The four Ethernet ports and ten SATA ports on board make this board a perfect board for a file serve...
2011-08-10 02:41:46
The EP45-DQ6 isnt the newest board on the market, but it is among the most stable. Gigabytes reputation has come a long way in offering stable and highly overclockable platforms for PC users. This particular motherboard is also listed as being 100% c...
2011-08-10 02:41:51
In addition to the P45 chipsets inherent PCI Express 2.0 and dual videocard Crossfire support, Gigabytes EP45-DQ6 motherboard boasts no less than four gigabit network ports, ten SATA channels, three IEEE1394 Firewire and twelve USB2.0 ports! mfgr l...
Bottom line How is it that Intels mainstream P45 Express chipset is the centerpiece of Gigabytes EP45-DQ6 motherboard, which retails for around $280? Are you missing out on a lot by sticking with the Intel P45 Express chipset when you could find an Intel X48 b...
2011-08-10 02:41:53
Gigabyte With the costs of energy going up, it is becoming more and more essential to keep the energy consumption to a minimum in order to save few bucks that could be better spent toward something more essential or enjoyable. Gigabyte has considere...
Bottom line The Gigabyte GA EP45-DQ6 is priced at 229.99 at which definitely places it in the big boy market and as such, it delivers. The question is does it deliver? My answer is yes. Although Gigabyte does have a couple of things to address, such as...
2011-08-10 02:41:55
All people can be divided in optimists and pessimists. But even the latter ones still hope for the best deep down inside, although they are certain that things will get only worse. New processor and graphics card models (unless these are old chips with...
Bottom line Even Gigabyte representatives admit that their Gigabyte GA-EP45-DQ6 mainboard is not ideal. The board itself as well as the BIOS Setup and the brand name software are not free from a few issues. We have pointed them all out in our today’s review. Ho...
2011-08-10 02:41:59
Intel has made a name out of itself for building processors, chipsets and other computer components over the years. They are the number one processor, chipset, and video chip company in the world today with over 9 billion US Dollars a quarter in revenu...
Bottom line The Gigabyte EP45-DQ6 has all of the features you would want from a motherboard based upon the Intel P45 and more. The board is so feature-laden in fact that I would have to say it’s a bit over the top compared with most of its competition. Having Ten...
2011-08-10 02:42:01
Gigabyte has been one of the popular motherboard manufacturers since the past few years and is currently one of the top three manufacturers worldwide (according to volumes). We had recently reviewed its top-of-the-line GA-EX38-DS4 motherboard and this...
Good Supports 1600 MHz 45 nm Intel processors and PCIe 2.0, Excellent overclocking support, Power saving DES Advanced, Good components, CrossFireX multi-GPU support, Silent, eSATA/SATA brackets, Quad-Gigabit ports, 10 SATA ports.
Bad CrossFireX mode works in x8 + x8 mode, Certain components come in the way of others, No additional brackets for additional ports.
Bottom line The Gigabyte GA-EP45-DQ6 is an excellent product and excels at everything in every department. It performs a lot like the X38, there is not really a difference between them and it could have even passed off as an iteration of that chipset. This mother...
2011-08-10 02:42:03
Processor: 3GHz Intel Core 2 Extreme X9650; RAM: 4GB OCZ Technology DDR2 PC2-6400 SLI-Ready Edition; Graphics: Nvidia GeForce 8800 GT; Hard dr...
2011-08-10 02:42:08
If you don’t just like Gigabit ports—you love them— Gigabyte’s GA-EP45-DQ6 is the motherboard for you. This mobo has four Gigabit ports that can be teamed together for one seriously fat-ass network connection. Elsewhere, the board is typical Gigabyte;...
Good Healthy dose of PCIE slots and welllabeled USB and FireWire headers.
Bad Performance lags behind other P45based motherboards.
2011-08-10 02:42:11
Back in June, Intel launched the P45 chipset - its replacement for the extremely succesfull P35 chipset. Since then, we have had the opportunity to review the Asus P5Q Deluxe and the MSI P45 Platinum - and while both of those boards were good, well tho...
Bottom line I have a bit of a quandry. On one hand, there are MANY things I REALLY like about the GA-EP45-DQ6: FOUR Gigabit Ethernet ports EIGHT USB2.0 ports right on the back panel Power/Reset/Cmos switches on the motherboard PCIe 2.0 slots: 1-16x, 1-8x, 2-4x, 1...
2011-08-10 02:42:14
s have ranged from the X38, X48 and the P45. Compound that with the fact that both DDR2 and DDR3 flavors generally exist for each, and you have a large number of models making their way to the market. The P45 can be considered the spiritual successor t...
Bottom line GIGABYTE produced a motherboard that fits both mainstream and enthusiast level users, that are seeking a motherboard solution based on the Intel P45 chipset. Be sure to use our pricing engine to find the best prices on Intel motherboards and anything...
2011-08-10 02:42:17
Since Intel embraced the Overclocker community a proliferation of Motherboards targeted at the LGA 775 socket based CPUs have hit the market in a big way. Most with an extremely premium price attached to them. Many enthusiasts held on to the quickly...
Good Great performance, Over Clocking Dream, Matrix Raid Works Flawlessly, 12 USB Ports, 4 Gigabit Lan With Teaming, Sweet Bundle, Good Power...
Bad Documentation and advertising on the features could have been better, Full length NVIDIA GPUS (GTX2XX class) will obscure a couple of Sata ports, Havent heard from Tech Support Yet...
Bottom line The Questionable Lets deal with the negatives first and get that out of the way. If your using a full length NVIDIA GPU like the new GTX-260 with its full length cowling your going to obscure a couple of Sata ports. In testing the full length GPU bar...
2011-08-10 02:42:20
For most of 2007, the P35 was the primary chipset for use in LGA775 motherboards. It was very versatile, supported both DDR2 and DDR3, and many motherboards, mainstream and high performance, were based on it. Weve seen three new Intel chipsets since l...
Good Rock Solid Stability, Plenty of Features for All Enthusiasts, Awesome Overclocker...
Bad Some May Not Like eSATA via Expansion Brackets Only...
Bottom line For my main rig, stability is my #1 priority. I depend on it a lot, and though there were 5 other working computers in my house during the four days that it was totally dead or nearly fatally unstable, I was completely lost. My most important deal is...
2011-08-10 02:42:23
A few years ago, a high-end motherboard would have had oodles of features and overclocking capabilities – something that Gigabyte’s DQ6-branded motherboards fitted perfectly. But now the market is changing as there are more SKUs that specifically...
Bottom line We do think Gigabyte has made a motherboard with a lot of potential here – the board currently works very well under default conditions. It has tons of features—and some are genuinely great little nuggets—far, far better software and very good performa...
2011-08-10 02:42:24
Moderkort med styrkretsen X48 har rent ut sagt vart en besvikelse då skillnaden är minimal jämfört med de X38-baserade korten. Vi ser inte heller speciellt mycket nyskapande lösningar på dessa. Om vi får tro tillverkarna ändras detta med lanseringen a...
2016-12-27 23:07:51
Just a couple of days back, we brought you a preview of Gigabytes upcoming GA-EP45-DS4 motherboard thats targeted at the high performance user group. Since then weve had more time to twiddle with Gigabytes top P45 motherboard SKU and better underst...
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