Skip to: | | - A great place to buy computers, computer parts, electronics, software, accessories, and DVDs online. With great prices, fast shipping, and top-rated customer service - Newegg shopping upgraded ™

If you are reading this message, Please click this link to reload this page.(Do not use your browser's "Refresh" button). Please email us if you're running the latest version of your browser and you still see this message. - Computer Parts, Laptops, Electronics, HDTVs, Digital Cameras and More!

GIGABYTE GA-EP43-UD3L LGA 775 Intel P43 ATX Intel Motherboard

Sold and Shipped by Newegg

Purchases from these Sellers are generally covered under our Newegg Marketplace Guarantee.
Marketplace Seller
  • Intel P43
  • Core 2 Quad / Core 2 Extreme / Core 2 Duo
  • DDR2 1200(O.C)/1066

  • Overview
  • Specs
  • Warranty & Returns
  • Reviews

Gigabyte's GA-EP43-UD3L motherboard has been optimized to work more efficiently with 45nm processors. The board has dynamic 4 gear power switching. As your system needs more power it gets it and when the power load goes down, so does the supplied power. This lets you have power when you need it and save energy and money when you don't.

Boasting Ultra Durable 3 technology, the Gigabyte GA-EP43-UD3L comes with the industry’s first consumer desktop motherboard design to introduce 2 ounces of copper for both the Power and Ground layers, delivering a dramatically lower system temperature, improved energy efficiency and enhanced stability for overclocking.

System durability and security are as important as ever. Gigabyte's DualBIOS system has a second BIOS chip on the motherboard for quick and painless recovery from crashes and viruses. Get the Gigabyte GA-EP43-UD3L today and build you own high end system.

  • newegg Intel P43 Express Chipset for Intel CPU Based on the Intel P43 Express chipset, the Gigabyte GA-EP43-UD3L supports Intel LGA 775 (Socket T) processors including the Core 2 Extreme, Core 2 Quad, Core 2 Duo and Pentium D series as well as the next generation Intel 45nm processors.
  • newegg Ultra Durable 3 Technology The Gigabyte GA-EP43-UD3L features revolutionary Ultra Durable 3 technology with a 2oz copper PCB design to help reduce system temperature and dramatically enhance performance.
  • newegg Gigabit Ethernet Connectivity The Gigabyte GA-EP43-UD3L features a fast Gigabit network interface for high-speed LAN connections at up to 1000Mb/s data transfer rates with advanced security features to ward off malicious attacks. Gigabit LAN is ideal for supercharged seamless streaming of Internet audio and video content.
  • newegg Gigabyte DualBIOS Gigabyte DualBIOS technology protects the BIOS from virus attacks. With its innovative backup BIOS design, this platform provides twice the security thus assuring the PC’s stability.

Learn more about the GIGABYTE GA-EP43-UD3L

Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 3 years
  • Limited Warranty period (labor): 3 years
  • Read full details
  • Return Policies
    • Return for refund within: 30 days
    • Return for replacement within: 30 days
  • This item is covered by's Standard Return Policy.
Ownership: more than 1 year
Verified Owner
5/ 5
Great Mobo! 4/15/2014 5:58:18 PM

Pros: Still works since 2009.

Cons: It's no longer in production. Hard to find brand new.

Overall Review: Still works after 5 years of use. Never had any issues.

Did you find this review helpful?
Ownership: more than 1 year
Verified Owner
5/ 5
Motherboard worth having 3/3/2014 8:29:47 AM

Pros: Most times there are troubles with new Motherboards. I bought this when it was fairly new, and other than a flash update of the bios, I've not really needed to do more.
It's always had room to fit what I needed and never a problem.

Cons: none

Overall Review: I've used this board for a while now, updated the cpu twice and it's never complained. I"m use to MB's becoming unstable after 2 or 3 years but this has held yup great. I think the caps are as good as Gigabyte says. this machine runs 24 hours a day for 3 years. Sans reboots and upgrades.

Did you find this review helpful?
Ownership: more than 1 year
Verified Owner
5/ 5
Excellent Board 9/5/2012 4:37:34 PM

Pros: Good value, plenty of USB and SATA connections. good On-board Audio and gigabit ethernet, latter of which saved me a PCI slot when I originally built it. Long-lasting- using it as I type this, was part of this build I did around 3 years ago and has been a solid performer since, which room for expansion both with more drives as well as expanding the memory from 8GB to the Motherboard maximum of 16GB.

Cons: somewhat obsolete (it is 3 years old). Only 2 PCI slots, which could be an issue if you have a nice collection of PCI cards you plan to leverage.

Overall Review: 100% satisfied with this board and it's performance over the last 3 years. Stable and reliable, it's been a component I can rely on.

Did you find this review helpful?
Ownership: more than 1 year
Verified Owner
1/ 5
Terrible board 1/16/2012 1:05:35 PM

Pros: Supposedly met all my requirements to run Intel quad core extreme type chips for a media PC

Cons: Just didnt work. Didn't turn on. Spent a lot of money taking it to Fris electronics, Best buy geek squad and also sent it back to Gigabyte for repairs but all of them failed to fix whatever defects in this board! Very bad!

0 out of 2 people found this review helpful. Did you?
Ownership: more than 1 year
Verified Owner
1/ 5
3 GB boards, = 3 dead GB boards 1/4/2012 2:16:34 PM

Pros: Good Board if it doesn't arrive DOA it if it will last over a few months.
I usually go with Asus boards, but I've bought 3 Gigabyte boards over the years, 1st one was DOA (bad AGP) second one was plagued but random reboots for no reason.
This one work good for 6 months then I started getting BIOS read errors, after sever re-flashes it work for a few months longer. Now it will not post at all, power flashes off and on 2-3 times per second.

Great Warranty but who has time, it's not worth the wait! Customers will not wait, so you have buy another brand

Cons: They Never last
Board is pretty dated now and probably not worth the hassle of getting a warranty replacement.

Overall Review: I've given Gigabyte 3 chances, but there products (motherboards) have failed me every time.

Great Warranty but who has time, it's not worth the wait! Customers will not wait, so you have buy another brand. I think Gigabyte depends on this fact.

0 out of 1 people found this review helpful. Did you?
Ownership: more than 1 year
Verified Owner
5/ 5
Good Product 8/29/2011 5:28:55 PM

Pros: I ordered this MBD 11/4/2009 and installed it with a Intel Pentium E6600 Wolfdale 3.06GHz 2MB L2 Cache LGA 775 65W Dual-Core Desktop Processor BX80571E6600. Video card was low end with 512mb memory. I have about 4gigs of Corsair memory. My computer is fast and never any problems because of the MBD. I believe If I had a top grade video card and could max the memory, I could get close to the 5.9 index all my numbers are 5.9 index except the graphics, and the hard drive. The Hard drive is not the best and I get 5.6 on it. I do not game so maybe I can accept the 4.4 for the graphics. You will not be disappointed purchasing if ever this MBD is out for sale again.

Cons: I had trouble putting 8 gigs of memory in. The memory worked but I seemed to encountered problems. I remove 4 gigs in late 2009 or early 2010 so I can not remember what problem I had or why I removed these sticks. Bios boot is somewhat but I do have I do have 4.5tbs with 5 drives on SATA, a TV tuner, a 2/4 port extra SATA card and 2 DVD burners on SATA for the Bio to recon with.

Overall Review: I do not overclock. Temps or 39c to 49c.

1 out of 1 people found this review helpful. Did you?
Ownership: 1 month to 1 year
Verified Owner
1/ 5
Watch Out 1/9/2011 6:19:24 AM

Pros: None at all

Cons: I had trouble with this board starting only 2 weeks after I put it in. My computer would not boot up only set there and beep non stop till I manually shut it down. I was told it was a connection problem but after scrutinizing all the connections the problem persist. Now only 3 months after I purchased the board its totally dead and has to be replaced. HOW ABOUT THAT FOR QUALITY!

Overall Review: I see Newegg no longer carries this board, hummm I wonder why?

0 out of 2 people found this review helpful. Did you?
Ownership: 1 month to 1 year
Verified Owner
1/ 5
DOA and Tough to RMA 12/30/2010 10:22:56 AM

Pros: Wish I knew

Cons: Bought this to replace an older Gigabyte board that had died. I got this board and then took me awhile to get it installed due to holidays and work. By the time I got it in and found it was DOA outside newegg's timeframe and after spending 8 hours over the course of a week wading through various hold music and emails trying to RMA the stupid board gave up. For the time I wasted I can just buy a new board and will just now buy someone else's motherboard instead since GIGABYTE gave me such terrible service.

Did you find this review helpful?
Manufacturer Response:
Dear Customer,

Thank you for your comments. We apologize for your difficulty with your Gigabyte product. Please contact us at with the case number 65351 in the subject line. We will provide personalized service and analysis to help solve your issue ASAP. If the matter is urgent, please send us your contact number, and we will contact you.

Gigabyte VIP Support Team
ICON Loading...
Selected Items
  • Add to Wish List
Are you an E-Blast Insider?
Subscribe Newegg e-Blast
Shop without retyping payment details. Secure shopping made faster.
Check out with PayPal.

Condition Guidelines

The following guidelines apply to all product categories unless otherwise indicated within specific categories.

  • New : This means the product will ship as received by the manufacturer, sealed, with all advertised components, and with the manufacturer warranty.
  • Refurbished : This means the product was tested and repaired as required to meet the standards of the refurbisher, which may or may not be the original manufacturer. Any exceptions to the condition of the item outside the manufacturer’s information should be provided in the listing, up to and including warranty details.
  • Open Box : Newegg only guarantees your receipt of the Open Box product with the purchase of this item. Any accessories MAY OR MAY NOT be included. Newegg will NOT send you any missing accessories, even if it is required to use all of the item’s functions.Open Box items usually do not come with manufacturer or vendor warranty or technical support. However, warranty support may be available if an item was never registered by a previous owner. Please contact the manufacturer to check.
  • Used - Like New : This means that the product has been opened, possibly used but is in perfect condition with no signs of cosmetic or functional defect. Product may includes warranty, and accessories found with the original product. Product may or may not be in the original packaging. Returned items with minor packaging defects fall under this category.
  • Used - Very Good : This means that the product has been opened, may show slight signs of use and cosmetic blemish, and may be missing minor accessories, but remain in excellent condition. Product does not come with warranty unless stated otherwise in product description.
  • Used - Good : This means that the product has been used, may show clear signs of use and may be missing minor accessories, but remain in good condition. Product does not come with warranty unless stated otherwise in product description.
  • Used - Acceptable : This means that the product shows clear signs of use, cosmetic defect, and may be missing minor accessories and manual, but remain in working condition. Product does not come with warranty unless stated otherwise in product description. Functionality issues beyond signs of use should be disclosed in product description.
Price Available at Checkout
Why can’t we show you details of this product?

Some manufacturers place restrictions on how details of their products may be communicated.

If the Adobe Reader does not appear when you click on a link for a PDF file, you can download Adobe Reader from the Adobe web site.