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Intel Core 2 Quad Q8400 2.66GHz Quad-Core (AT80580PJ0674ML) Processor
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- Buy It NowIntel Core 2 Quad Q8400 CPU SLGT6 2.66GHz 4MB 1333MHz Socket 775 Processors
About this product
Product Information
- The Intel Core 2 Quad Q8400 is a processing workhorse that can meet the requirements of both professional and gaming computer systems. Manufactured and distributed by Intel Corporation, this quad-core CPU comes equipped with a variety of beneficial technologies that enhance performance and maintain security. The 45 nm chip was released in the second quarter of 2009 as part of the Yorkfield line of Intel processors. Professionals and gamers will find the Intel Core 2 Quad Q8400 to be a customizable and efficient desktop processing solution.The Intel Core 2 Quad Q8400 CPU runs at a processor base frequency of 2.66 GHz and is equipped with four cores, allowing users to multitask through the power of multi-threading processing. Data is retrieved quickly, and tasks are executed speedily via the chip’s 4 MB L2 cache. In addition, communication between each core and the motherboard components is expedited through the front-side bus (FSB), which transfers data at a rapid speed of 1333 MHz. Designed for installation into motherboards featuring an LGA775 socket, the Intel Core runs a 64-bit instruction set and employs 456 million processing die transistors. Once the processor is installed in the socket, users will run the power-on self-test (POST), which runs boot software and diagnostic tests before the operating system is initialized.With a thermal design power (TDP) of 95 W, the Quad Q8400 runs at a voltage range between 0.8500 V and 1.3625 V. To help maintain the life of the processor and prevent overheating and degradation, the chip features Intel thermal monitoring technologies that keep the temperature from exceeding the maximum of 71.4 degrees Celsius. Other Intel programs work in tandem with this feature to ensure the smooth operation of the unit. Intel Advanced Smart Cache Technology intelligently allocates tasks to each core according to the relevant needs of the system, which spares users unnecessary delays resulting from core bottlenecking. In addition, Intel Wide Dynamic Execution enables each core to handle up to four instructions at any given time. For security purposes, Execute Disable Bit (EDB) is also installed to avert damage from cyber attacks that seek to exploit systems through worms and other malicious software. Finally, Intel Virtualization Technology enables businesses to execute a wide array of virtual functions that allow multiple uses on shared hardware.Gamers and professionals who want to overclock Quad Q8400 CPUs will be able to reach core speeds in excess of 3.0 GHz by tweaking the appropriate settings in the BIOS. Overclocking the CPU while using sufficient RAM and appropriate graphics hardware will give you a computer system that can easily handle complex games and resource-intensive applications. This type of CPU is capable of accommodating high levels of performance in gaming. Equipped with a number of impressive features, the Quad Q8400 has the necessary specifications to meet the increasingly high demands of professionals and gamers alike. It offers high-performance CPU processing that continues to perform admirably in countless systems.
Product Identifiers
- BrandIntel
- MPNAT80580PJ0674ML
- UPC0809395426057
- eBay Product ID (ePID)77650436
Product Key Features
- Socket TypeLGA 775/Socket T
- Processor TypeCore 2 Quad
Additional Product Features
- Manufacturing Process45 NM
- Platform CompatibilityPC
- Installed Size4MB
- Processor Quantity1
- Product TypeProcessor
- Bus SpeedFsb Speed-1333MHz
- L3 Cache4MB
- Clock Speed2.66GHz
- 64-Bit ComputingYes
- Processor ModelCore 2 Quad Q8400
- Compatible Slots1X Processor-LGA 775/Socket T Socket
- L2 Cache1MB
- Cooling Component(s) IncludedNone/Processor only
- Tdp95W
- Multi-Core TechnologyQuad-Core
- Max. Operating Temperature71.4°C
- Package TypeOem/Tray
- TypeL2 Caché
- Level 1 Size32KB
- Architecture FeaturesExtended Memory 64 Technology (Em64t)
All listings for this product
item 17 Intel Core 2 Quad Q8400 2.66GHz 4-Core LGA775 Desktop CPU Processor 95W SLGT6
$11.99Last oneFree shippingitem 22 SLGT6 Intel Core2 Quad Desktop Q8400 4 Core Core 2.66GHz LGA775 Desktop CPU
$8.78+$12.00 shippingitem 25 Intel Core 2 Quad Q8400 2.66GHz/4MB/1333MHz Socket 775 CPU Processor SLGT6
$41.73+$17.38 shipping
Most relevant reviews
- by gran_forbJul 12, 2017
A great upgrade for my Dell Optiplex 755 Minitower
My Optiplex 755 originally had an Intel Celeron 430 1.8 GHZ and running Windows XP Professional 32-Bit, 2gb of ram, and slow as can be. I put this baby in my computer, maxed it out at 8gb of ram, and I installed Windows 7 Professional 64-Bit on it. This processor added a new life to my Optiplex. For under 20 dollars, you are getting one heck of a CPU.
Verified purchase: Yes | Condition: Pre-owned
- by myndbendyrMar 18, 2019
Good older processor
It's an old CPU, but if you're upgrading an older machine with a dual-core, it's a decent upgrade. Clock speed not as fast as other quad-cores, but this one is much cheaper. It dropped right in to my old Acer and worked great.
Verified purchase: Yes | Condition: Pre-owned
- by rafacsJan 31, 2018
Easy to install but PC may have to have BIOs and drivers updated to work
The CPU was easy to install. However, my PC had to have the BIOs and Windows drivers updated to work. Beware, my Lenovo M57p was built for Windows Vista and they don't make drivers for Windows Server 2016. There are no unknown devices under Vista but there are 3 unknown PCI devices under Windows Server 2016. Doesn't seem to affect the CPU though. My PC was at 50% CPU utilization with the original Core 2 Duo. It runs at 1 to 2% CPU utilization with the new CPU. Well worth the price!
Verified purchase: Yes | Condition: Pre-owned
- by OXsasle-Q4O@Del...Mar 08, 2016
Q8400 speedster
I originally bought these Q8400s to replace some E6300s in some Optiplex 745 and 755 SFF units. The 745s would not boot with the Q84OOs so I went back to the E6300 (ugh). However, the Optiplex 755 loved them and made those units a respectable desk top again. For a business office that is not heavy into graphic design and/or photo renditions, this is a big dollar saver. The price was low, the install time was 20 minutes or so and voila, a cooking little computer. I have used some ~3ghz dual-core that are pretty quick, but these Q8400s really get a grip when multitasking with web hosted apps, and local apps that depend on each other. And yes, I would recommend them to anyone who wants to ad new life to an otherwise slow machine. Don't forget to bump up the RAM to at least 4 gigs and run Disk Cleanup once a week.Read full review
Verified purchase: Yes | Condition: Pre-owned
- by arngr53Sep 28, 2020
Excellent choice for upgrade!
Very easy to install. BGA instead of pins. Upgraded old Optiplex 330 computers from Core 2 Duo. Have used three, no glitches. Very pleased.
Verified purchase: Yes | Condition: Pre-owned
- by molly12oscar7Nov 22, 2017
good upgrade for older computer
This CPU is a good upgrade for an older computer. I had no trouble removing my old processor and installing this one, though I did have trouble getting the fan/heat-sink reinstalled, next time I will pull the motherboard from the case to have more space to work. WEI benchmark went from 4.8 to 7.3. The processor is working fine more than a week after installation.
Verified purchase: Yes | Condition: Pre-owned
- by lellisjNov 02, 2017
Cheap and effective
Bought a couple of these to replace Core2 Duo processors in some older machines. They went in painlessly and improved performance noticeably. I was careful to clean off the old thermal paste and replace it. Since the Q8400 has a power dissipation of only 95w, CPU temperatures went up a couple of degrees C but still well out of the danger zone. I'd do this again if I had more older machines that needed a boost.
Verified purchase: Yes | Condition: Refurbished
- by bjfarr1Mar 22, 2016
Easy Upgrade
Replaced an e6600 duo core with this quad core. Changed bus speed to 133mhz and increase windows score by 2 points for CPU and 1 point for RAM. No more excessive fan noise trying to cool CPU when running mutiple tasks.
Verified purchase: Yes | Condition: Pre-owned
- by shinji_ikari9Jul 13, 2017
A Core 2 Quad Q8400 In 2017
Pros: Cheap Very Efficient A nice cheap upgrade for older computers Easy to obtain Still fast even today Cons: Outperformed by some Core i3 and every Core i5 processors and beyond Old but what do you expect... it's cheap for a reason Other Thoughts: It makes me wonder which was a better processor; Core 2 Quad Q8400 or Phenom II X4 925? The thermals on this chip are much better than on the Phenom II chip lineup... but the Phenom II has Level 3 cache. A bit of a trade off indeed although today it still has it where it count. What I don't understand is that most Core i series chips, getting an actual working motherboard for these chips; one encounters "scalper" prices which is rather unfair in my professional opinion. LGA775 motherboards and processors are inexpensive and getting performance oriented DDR2 800 memory is really easy to obtain. So why is it that much older Core i series chips, you can't find motherboards for while the chips themselves are super cheap. It really defeats the purpose of cheap processors if you can't run them.Read full review
Verified purchase: Yes | Condition: Pre-owned
- by bx-tech.storeMar 20, 2017
Old but still Good
I was looking for an upgrade to my home media server from a core 2 Duo and happened to find this chip. It was a huge upgrade for less than $20. My 1080p transcoding improved quite a bit and I dropped in a 750 Ti and was able to play games like Fallout New vegas with zero issues. If you are looking to put together a budget system for light gaming, PLEX, or a file server this chip will do just fine.
Verified purchase: Yes | Condition: Pre-owned
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