Intel Core i7 Extreme Edition 3960X 6-core LGA 2011

★★★★☆ 4.3 (140)

The 32nm Sandy Bridge-E architecture delivers strong multi-threaded throughput with 6 cores, 12 threads, and a 3.9GHz boost clock, backed by a generous 15MB L3 cache. Its unlocked multiplier and quad-channel DDR3 memory controller offer substantial overclocking headroom on the LGA 2011 platform, despite the 130W TDP. This processor is best for users upgrading legacy high-end desktop workstations who need affordable, parallelized rendering power and aren't constrained by modern efficiency standards.

Cores 6
Threads 12
Boost Clock 3900 MHz
L3 Cache 15 MB
TDP 130 W
Socket LGA 2011
Intel Core i7 Extreme Edition 3960X 6-core LGA 2011 cpu
50 Overall Score
Also available in:

Snapshot

Pros & Cons

Pros

  • Strong social proof (77th percentile) 77th
  • Strong platform (74th percentile) 74th

Cons

What owners think

How owner sentiment changed over time

Exclusive

Based on when customers actually wrote their reviews - so you can see whether early praise held up.

Owner sentiment has held steady over time
82/100Our AI sentiment readhigh confidence · 37 sources · Oct 2026
1★2★3★4★5★Q4 '11: 2.0★ · 1 reviewQ1 '12: 4.3★ · 3 reviewsQ3 '12: 5.0★ · 2 reviewsQ4 '12: 3.0★ · 1 reviewQ1 '13: 4.0★ · 3 reviewsQ2 '14: 5.0★ · 2 reviewsQ3 '14: 5.0★ · 1 reviewQ4 '16: 1.0★ · 1 reviewQ1 '18: 5.0★ · 1 reviewQ4 '21: 5.0★ · 1 reviewQ2 '26: 4.7★ · 25 reviews (approx. date)132132111125Q4 '11Q1 '12Q3 '12Q4 '12Q1 '13Q2 '14Q3 '14Q4 '16Q1 '18Q4 '21Q2 '26
Avg ratingHappy (4-5★)Unhappy (1-2★)Bar height = number of reviewsEstimated date

Based on 41 dated customer reviews, grouped by calendar quarter. Period analysis is in English.

The proof

Performance

Performance Percentiles

AI 54.4
Feature 62.6
Platform 74.4
User Sentiment 50.1
Efficiency 43.7
Multi Thread 56.1
Social Proof 76.5
Affordability 37.9
Single Thread 44.2

Specifications

Full Specifications

Processor

Brand Intel
Series Core i7 Extreme Edition
Model 3960X
Codename Sandy Bridge-E
Class desktop
Process 32

Cores & Clocks

Cores 6
Threads 12
Base Clock 3300
Boost Clock 3900

Cache

L2 Cache 1.5
L3 Cache 15 MB

Performance

PassMark Multi 8436
PassMark Single 1778

Memory

Memory Type DDR3
Max Speed 1600
Channels 4

Platform & Power

Socket LGA 2011
PCIe 2
PCIe Lanes 40
TDP 130
Unlocked Yes

vs Competition

Spec Intel Core i7 Extreme Edition 3960X AMD Ryzen 7 9800X3D G.Skill Trident Z Neo MICRO CENTER 9950X3DMAGX870ETMKWF Lenovo Ryzen 5 Sparepart: ADVB3 Phenom II X6 HDT90ZFBGRBOX
Cores 6 8 6 - 6 6
Threads 12 16 12 - 12 6
Boost Clock Mhz 3900 5200 4200 - 4000 3600
L3 Cache Mb 15 96 32 - 8 6
Tdp W 130 120 65 - 15 125
Socket LGA 2011 AM5 AMD Socket AM4 - AM4 AM3
Integrated Graphics - AMD Radeon Graphics - - AMD Integrated Graphics -
Compare Compare Compare Compare Compare
Product AIFeaturePlatformUser SentimentEfficiencyMulti ThreadSocial ProofAffordabilitySingle Thread
Intel Core i7 Extreme Edition 3960X 54.462.674.450.143.756.176.537.944.2
AMD Ryzen 7 9800X3D Compare 91.398.595.292.788.188.896.523.494.8
G.Skill Trident Z Neo Compare 7287.378.4083.571.6020.871.7
MICRO CENTER 9950X3DMAGX870ETMKWF Compare 85.120.417.9065.79706.898.2
Lenovo Ryzen 5 Sparepart: Compare 62.454.957.2099.362.59.21066.1
ADVB3 Phenom II X6 HDT90ZFBGRBOX Compare 32.274.854033.234.37854.633.8

Price

Value & Pricing

From CA$604 1 offer across 1 retailer
Amazon 1 offer From CA$604

Price History

CA$300 CA$400 CA$500 CA$600 CA$700 Jun 9Nov 8 CA$604

Usage Scores

Overall (49.9)AI/LLM (45.7)Budget (51.6)Gaming (44.5)Server (43)Efficiency (40)Productivity (52.2)

A full written review is coming soon. The specs, scores, prices and charts above are always up to date.

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