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Gigabyte GA-EP45T-EXTREME LGA 775 (Socket T) ATX motherboard

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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: 25 May 2008
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Info modified on: 12 Jun 2018 16:29:02
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Long product name Gigabyte GA-EP45T-EXTREME LGA 775 (Socket T) ATX motherboard :
The short editorial description of Gigabyte GA-EP45T-EXTREME LGA 775 (Socket T) ATX motherboard

GA-EP45T-Extreme ATX LGA775 1600 DDR3
Gigabyte GA-EP45T-EXTREME LGA 775 (Socket T) ATX motherboard:
The official marketing text of Gigabyte GA-EP45T-EXTREME LGA 775 (Socket T) ATX motherboard as supplied by the manufacturer

Designed for overclocking enthusiasts with overwhelming overclocking experience, GIGABYTE GA-EP45T-EXTREME is based on Intel P45 chipset, and supports the latest multi-core and 45nm processors up to FSB 1600MHz, featuring dual PCI-E 2.0x16 connectivity with CrossFireX™ supported and dual LAN with teaming for ultra bandwidth.

GA-EP45T-EXTREME equipped with all-copper heat pipe from North Bridge, South Bridge, to CPU MOSFET which provides comprehensive thermal solution, and can be further optimized by a special heat pipe between North Bridge heat sink and PCI socket on your option. Additionally, enhanced with special design around CPU circuit for maximum heat reducing and top quality electronics components, GA-EP45T-EXTREME brings unprecedented cool and reliable platform for overclockers.

Built with GIGABYTE patented Dynamic Energy Saver Advanced technology and Ultra Durable 2 design, GA-EP45T-EXTREME delivers ultimate overclocking performance along with maximum stability and advanced power savings.

Smaller, Faster and More Efficient
GA-EP45T-EXTREME 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 Bearlake chipsets all support Intel's new generation, 45nm multi-core processors.

Dual Channel DDR3 1900 (O.C.)
Experience the advanced technology of DDR3 1900 (O.C.) memory, featuring faster speeds and higher data bandwidth, which delivers superior performance for the most demanding applications.
* Please refer "Memory Support List" for memory support information

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-EP45T-EXTREME 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.

Attention: When attempting to enable ATI CrossfireX Technology on this board. In case of unable to get Crossfire Technology working normally, please make sure to use ATI graphic cards that have hardware Crossfire bridge. (Please refer to ATI official website for more Crossfire Technology supporting details: (

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

Short summary description Gigabyte GA-EP45T-EXTREME LGA 775 (Socket T) ATX motherboard:
This short summary of the Gigabyte GA-EP45T-EXTREME LGA 775 (Socket T) ATX motherboard data-sheet is auto-generated and uses the product title and the first six key specs.

Gigabyte GA-EP45T-EXTREME, 1.5 V, 16 GB, Intel, LGA 775 (Socket T), 0, 1, 10, Realtek RTL8111C

Long summary description Gigabyte GA-EP45T-EXTREME LGA 775 (Socket T) ATX motherboard:
This is an auto-generated long summary of Gigabyte GA-EP45T-EXTREME LGA 775 (Socket T) ATX motherboard based on the first three specs of the first five spec groups.

Gigabyte GA-EP45T-EXTREME. Memory voltage: 1.5 V, 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
Memory voltage
1.5 V
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 SATA connectors
S/PDIF out connector
CD/AUX audio in
ATX Power connector (24-pin)
Power fan connector
CPU fan connector
Number of COM connectors
Number of IEEE1394 connectors
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 *
Back panel I/O ports
Headphone outputs
Microphone in
S/PDIF out port
S/PDIF in port
COM ports quantity
LAN controller
Realtek RTL8111C
Networking features
10/100/1000 Mbit
Motherboard form factor *
Audio output channels *
7.1 channels
Audio chip
Realtek ALC889A
Expansion slots
PCI Express x1 slots
PCI Express x4 slots
PCI Express x16 slots
Expansion slots
3 x PCI
BIOS type *
Power source type
Packaging content
Trial software
Norton Internet Security
Other features
Compatible operating systems
Microsoft Windows Vista/XP
Source Testseek summary Average rating
Testseek has collected 23 expert reviews for Gigabyte GA-EP45T-EXTREME Motherboard and the average expert rating is 78 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
You know those motherboards that carry features nobody wants, at a price nobody cares to pay? They have stuff youve never hear of, mysterious applets that you access before the board even posts, and theyre touted as revolutionary? This isnt one of t...
Good Overclockers dream, with tons of OC options and terrific stability, even with air cooling; cornucopia of features...
Bad Minor setup issues...
Bottom line If you dig those double-mortgage mobos that pack everything plus a couple kitchen sinks but you cant afford one, Gigabyte might have the answer for you in the EP45T-Extreme.Results: Transcoding...
Having served for eight years in the Marines, I find myself a little desensitized to camouflaged patterns. Back when I reviewed the GA-X48T-DQ6, Gigabyte certainly captured my attention with a large gold retail box. For the GA-EP45T-EXTREME however...
Good Outstanding BIOS - designed for overclockers!, Hyrbid Silent-Pipe component improves P45 thermal stability, Ultra TPM enables 2048-bit on-chip encryption, Advanced Dynamic Energy Saver offers VRD 11.1 ultra-low power state, Dual PCI Express 2.0 complia...
Bad Extremely poor SATA2 connection port location/orientation, Only one PCI Express 16lane (16 GBps) interface, Expensive motherboard solution, Lacks SLI and ESA support, Complicated BIOS for novice overclockers, System Memory is difficult to overclock wit...
Bottom line Having served for eight years in the Marines, I find myself a little desensitized to camouflaged patterns. Back when I reviewed the GA-X48T-DQ6, Gigabyte certainly captured my attention with a large gold retail box. For the GA-EP45T-EXTREME however...
Fads come and go and even trends may shift dramatically due to a single event or happening. In the case of motherboards, it seems that for some reasons, vendors think that all enthusiasts dabble in liquid cooling of some form or another. Is that the la...
Bottom line When Gigabyte launched its full range of Intel P45 motherboards at Computex 2008, we were dazzled by the number of models available. Obviously, within that comprehensive list, the company has a high-end version targeted at the extreme overclocking en...
When I heard that I was going to be getting the Gigabyte EP45T-Extreme I was extremely excited. It’s been quite a long time now since I’ve gotten my hands on a motherboard designed specifically for overclocking. The last one was from DFI, back when th...
Good Good performance, Over Clocking Dream, 12 USB Ports, 2 Gigabit Lan With Teaming, Nice Bundle, Good Power...
Bad Battery is near impossible to replace when board/Silent Pipe NB Cooler is installed, SATA ports can be blocked by newer generation of highend video cards, No external USB bracket, Issues fitting the SilentPipe cooler in some situations, Occasional bios...
Bottom line Okay, just where do I start with this board? This board was a pain in the rear from the beginning with its layout issues raising their nasty head at every turn. The layout issues aren’t what anyone would call major faults and wouldn’t stop me...
Like all leading motherboard manufacturers, Gigabyte rolled out an entire family of models based on the Intel 4x chipsets. It includes interesting motherboards from the new Ultra Durable 3 series (with an additional copper layer in their PCBs) and a t...
Bottom line Unfortunately, before we proceed to praises -- Gigabyte EP45T-Extreme produces the best impressions -- lets take a look at its price. Alas, this is a top motherboard not only in features, quality, and technologies, but also in price. What will you ge...
One of the major problems during system overclocking is ensuring proper cooling of all its components – not just the CPU, but also the mainboard chipset, which works at higher frequency and voltage settings. And since overclocked systems are often e...
Bottom line From a formal specification standpoint, Gigabyte GA-EP45T-Extreme mainboard is pretty similar to a few other solutions on Intel P45 Express chipset. It offers all the features provided by the chipset including a South Bridge supporting RAID configurati...
Gigabyte keeps the hits coming with the GA-EP45T-Extreme, the latest in a series of boards based on Intel’s P45 chipset.
Gigabyte Gigabyte is a name that most computer enthusiasts should be familiar with. Gigabyte has been in the motherboard business a long time and has brought a lot of good boards into the market and is often on an enthusiast’s short list of brands to p...
Bottom line Gigabyte has built a hell of a motherboard in the GA- EP45T-Extreme. It is however not a board for everyone as it exhibits some quirks in terms of layout and memory speeds. If you are dead set on getting the fastest DDR3 memory speeds you can while ove...
Today we are looking at Gigabytes EP45-T Extreme motherboard. This is one of their high end motherboards, and it shows it. The packaging is pretty fancy, and even has a carrying handle! Gigabyte is not shy about letting you know of all of its features...
Bottom line The Gigabyte EP45-T Extreme is an excellent board, even with its DDR3 timing shortcomings. It has great I/O expandability, and an excellent feature set; it was quite stable during testing - and I never had to remove the CMOS battery no matter how I tr...
Gigabyte is a top-tier motherboard and video card vendor. Their name is well known within the enthusiast community and for good reason. A recent revival in their interest in overclocking and the enthusiast has resulted in a number of fine-tuned moth...
Bottom line The GA-EP45T-Extreme lives up to its name with Extreme Performance...
to the Extreme: When as a manufacturer you add the word "Extreme" to a product you had best be prepared to backup that claim. No where is that more true than in the computer industry. Enthusiasts, DIYers, and analysts alike smell blood in the water...
Bottom line During Computex 2008 we previewed the full lineup of Gigabytes P45 chipset enabled motherboards...and there were quite a few. The Extreme is obviously targeted towards the enthusiast and overclockers crowd and we feel it hits the mark perfectly. The...
Gigabyte is typically one of the most loyal Intel partners, when it comes to chipsets. While they don’t solely produce Intel motherboards, when Intel does release a new chipset, Gigabyte is almost always there to produce several products on any give...
Bottom line While each of Gigabyte’s P45 boards has definite positives and negatives, in the wider view, they’ve got a very impressive array of options here for consumers looking to buy an Intel P45 based motherboard. Even better is that these four boards...
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