771 Xeon
Overview
Product sourcing insights & recommendations


The phrase "771 Xeon" refers to a popular hardware "mod" where server-grade Intel Xeon processors (LGA 771) are modified to run on consumer-grade LGA 775 motherboards. While natively incompatible, this modification allows users to achieve Core 2 Quad-level performance at a fraction of the cost, making it a cornerstone of the retro PC building and budget workstation markets OverclockReddit.
Market Trends & Pricing (2026)
The market for Xeon processors in 2026 is experiencing a "structural shift" due to rising new CPU prices (+27% YoY) and the growth of AI infrastructure Harddiskdirect.
* Retro Demand: The "771 to 775" mod remains a niche but active interest for hobbyists. Modified processors like the Xeon X5460 are available for approximately $15.70, often bundled with the necessary adapter stickers Alibaba.
* Enterprise Shift: In the broader B2B market, demand has shifted toward refurbished Xeon E5-2600 v4 series (LGA 2011-3) for affordable virtualization and AI inference, with prices for high-end legacy models like the E5-2680 v4 remaining stable around $38 due to high stock availability AlibabaAlibaba.
* Silicon Constraints: New server CPU supply only meets ~40% of global demand, further driving the value of certified refurbished Xeon units across all generations Alibaba.
Key Technical Insights
To successfully utilize a "771 Xeon" on a consumer board, three critical steps are required FacebookHarddiskdirect:
- 1Pin Swap: An adhesive adapter sticker is applied to the CPU base to swap two signal pins.
- 2Socket Modification: The plastic guide tabs in the LGA 775 socket must be physically removed to allow the 771 CPU to sit flat.
- 3BIOS Microcode: The motherboard's BIOS must be flashed with injected microcodes to ensure the CPU is correctly recognized and runs at full speed with all instruction sets (e.g., SSE4.1) enabled.
The most compatible chipsets for this mod include P35, P45, G31, and G41, while X38 and Q45 boards are generally avoided due to hardware limitations Harddiskdirect.
Based on the retro hardware interest, you can explore:
Lga 771 To 775 Modified Xeon E5450 E5440 X5460
Products · 2 lists

Original Intel Xeon X5460 3.16GHz/12M/1333 Processor close to LGA771 Core 2 Quad Q9750 CPU (Give Two 771 to 775 Adapters)
Shenzhen Zvepower Technology Co., Ltd.🇨🇳CN5 yrs
FOR for Intel Xeon CPU Processor X5460 SLBBA SLANP 12M Cache 3.16 GHz 1333 MHz FSB LGA771 Processor for Intel Xeon CPU
Shenzhen Levensun Technology Co., Limited🇨🇳CN2 yrs
New E5450 Processor Lga 771 E5450 Quad Core 3.00GHz 1333MHz FSB 12MB L2 Cache 80w Server Processor CPU
Guangzhou Youxun Information Technology Co., Ltd.verified🇨🇳CN6 yrs
Good Price Intel Xeon E5-2676V4 2682V4 2683V4 2686V4 2687W V4 CPU Processor for Server Original Bulk Processor
Shenzhen Bestech Electronics Technology Corporation Limited🇨🇳CN5 yrs
Best Selling for Xeon E5-2670V4 2680V4 2690V4 2692V4 2695V4 Refurbished Server CPU 22 Cores 2.2GHz Bulk
Shenzhen Changliu Global Trading Co., Ltd.verified🇨🇳CN2 yrs
New for Xeon E5-2680 V4 14-Core Server CPU 3.4GHz LGA 775 22nm 3MB 64-bit for X99 Desktop
SFL Sungroup., Limited🇭🇰HK1 yr
100% Original Xeon E5-2699 V4 Server CPU Processor 2.20GHz Xeon Xeon E5-2699 V4 Refurbished and Used
Beijing Wisdom Creative Information Technology Co., Ltd.verified🇨🇳CN6 yrs
Intel Xeon Platinum 8575c 2.8GHz LGA4677 48 Cores 96 Threads Server CPU Processors
Shi Di Fen (Shenzhen) Technology Co., Ltd.🇨🇳CN7 yrs
Wholesale for XEON E5 2666 2673 2676 2680 2690 2696 2686 2699 2667 2682 2697 2678 V3 V4 Server CPU
Shenzhen Dehan Century Technology Co., Ltd.🇨🇳CN2 yrs
For Intel Xeon Gold 6544Y 16-Core 32-Thread 3.6GHz TDP 270W LGA-4677 Processor for Server Applications New Product
Shenzhen Shengshengjie Technology Co., Ltd.🇨🇳CN3 yrs
Intel Xeon Silver 4310 2.1GHz 12-core 18MB 20W Ice Lake Processor CPU

Intel Xeon E5649 E5645 L5640 CPU Six core LGA1366 ready stock best offer
Shenzhen Zst Electronics Technology Co., Ltd.🇨🇳CN10 yrs
I-N-T-E-L Xeon Gold CPU 8558P/8558/9654/9554 Server Processor Xeon

New for Xeon W7-2475X Server Processor 20 Cores 40 Threads 2.1GHz
Beijing Qingyida Technology Co., Ltd.verified🇨🇳CN1 yr
For Intel Xeon X5675 3.0 GHz Six-Core Twelve-Thread CPU Processor 12M 95W LGA 1366
Shenzhen Shangfan Technology Co., Limited🇨🇳CN10 yrs
For Xeon Gold 6554S 36-Core 4GHz Server CPU with L3 Cache-New/Used Options
Shenzhen Yuzhi Technology Co., Ltd.🇨🇳CN1 yr
New Hot Sale Cheap for Xeon E5 2698 V4 Server CPU 50M Cache 2.20 GHz
L & L COMPUTERMY6 yrs
Xeon E5-2620-V4 CPU Server Processor
Chongqing Chimu Technology Co., Ltd.verified🇨🇳CN6 yrs
Xeon W7-2475X Processor, 20 Cores, 40 Threads, 2.6GHz Base Frequency, 4.8GHz Turbo, 37.5MB Smart Cache, FCLGA4677, 225W

I-N-T-E-L Xeon Gold CPU 8558P/8558/9654/9554 Server Processor Xeon
Shenzhen Huacheng Computer Limitedverified🇨🇳CN1 yr
Xeon W9-3595X W9-3575X W9-3475X W7-2495X/SRM9D W7-3445/SRM33 W9-3495X Server Processor CPUs

New Original Intel Xeon W5-3423 CPU Processor 3.10GHz 12-Core 30MB 220W Server CPUs
Beijing Puhua Haotian Technology Co., Ltd.verified🇨🇳CN3 yrs
For Original Xeon Gold Official Version CPU XEON 6526Y 6542Y 6444Y 6544Y 6548Y 6530 6534 4677-pin CPU Processor
Shenzhen Shengdi Technology Co., Ltd.🇨🇳CN9 yrs
Xeon X5550 2.66GHz LGA1366 L3 Cache 8MB Quad-Core CPU Processor Desktop In Stock
Shenzhen Sitenghui Technology Co., Ltd.🇨🇳CN13 yrs
Intel Xeon E3 1275 V2 1275V2 3.8GHz LGA 1155 8MB Quad Core 77W CPU Processor
Shenzhen Jiutian Shenmatradingco., Ltd.🇨🇳CN6 yrs
Hot Selling Xeon E5-2699 V3 2.30 GHz 18C/36T Server CPU
Fu You Electronics Co., Limited🇭🇰HK2 yrs
Servers Xeon Processor 4410T/4410Y/4416+/5415+/5416S/5418Y/5420+/6416H/6418H/6426Y/6430 With 2U Heat Pipe Single Heat Sink
MOZHEN INTERNATIONAL CO., LIMITED🇭🇰HK2 yrs
For Original Xeon Gold Official Version CPU XEON 6526Y 6542Y 6444Y 6544Y 6548Y 6530 6534 4677-pin CPU Processor

Intel Xeon Silver 4114 Processor Tower Rack Server Workstation Cpu
Wuhan Xinqidian Technology Group Co., Ltd.verified🇨🇳CN4 yrs
HOT SALE Intel XEON E5 2680V4 14 Core 2.40GHZ 35MB L3 Cache 120W LGA 2011-3 E5 2680V4 CPU Processor
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Sources & References
23 sources cited · Verified industry data & reports

Xeon LGA 771 on LGA 775 mobos : r/buildapc
Reddit · r/buildapc
The 771 Xeons are why you want to convert to 775. They are much more powerful, actually developed on a smaller transistor, I know it was hard ...

[MOD] LGA775 Support For LGA771 Xeon CPUs
Overclock.net
This mod is for LGA775 motherboards only! It allows the use of LGA771 Xeon CPU's that are very affordable and powerful in many LGA775 ...

LGA 771
Wikipedia
LGA 771, also known as Socket J, is a CPU interface introduced by Intel in 2006. ceased production in 2011, Release date May 16, 2006; 20 years ago (2006-05-16)

[SOLVED] - From LGA 775 to LGA 771 Xeon mod
Tom's Hardware
I just bought a CPU Xeon x5450 Lga 771 with the mode already done so i can just put the CPU inside the Lga 775 motherboard. When i turn on the PC the fans ...
Who has done the LGA 771 Xeon to LGA 775 mod?
AnandTech Forums: Technology, Hardware, Software, and Deals
Recently, I converted a Dell Optiplex 360 slim desktop to a Xeon E5440 (2.83 Ghz with 12 MB cache) using the LGA 771 to LGA 775 adapter ...

Ultimate LGA 771/775 build?
VOGONS
Ultimate LGA 771/775 build? · 1. Q9650 or XEON · 2. MSI P45D3 platinum · 3. 16gb of DDR3 · 4. Radeon 4870/4890 *2 in crossfire. · 5. SSD Intel X25 ...
