Quick Verdict
A monster CPU for 2013, offering the best of the Ivy Bridge-E architecture with top-tier clocks, massive cache, and full unlocking for extreme performance.
Overview
Launch
2013
Status
End-of-lifeGeneration
4th Generation (Ivy Bridge-E)
Market
Desktop
The Intel Core i7-4960X Extreme Edition is the flagship high-end desktop (HEDT) processor of the Ivy Bridge-E generation, released in September 2013. Featuring 6 cores and 12 threads, it operates at a base clock of 3.6 GHz and boosts up to 4.0 GHz. Built on a 22nm process, it uses the LGA 2011 socket and boasts a massive 15MB L3 cache. As an 'X' series Extreme Edition chip, it features an unlocked multiplier for unlimited overclocking. The 130W TDP reflects its high-performance binning. It supports quad-channel DDR3 memory and offers 40 PCIe 3.0 lanes. Lacking integrated graphics, it is purely focused on CPU compute. The 4960X was the ultimate processor for enthusiasts and professionals in 2013, offering the highest clock speeds and largest cache available on the X79 platform, excelling in 3D rendering, video production, and extreme benchmarking.
The Core i7-4960X delivers 6 cores, 12 threads, and a 3.6 GHz base clock. With 15MB of L3 cache, 40 PCIe lanes, and quad-channel memory, it is a workstation beast designed for extreme enthusiasts, offering massive overclocking headroom and top-tier multi-threaded performance.
Specifications
Performance
Still a very capable chip for heavy multi-threaded workloads.
Excellent for home labs with 12 threads and 40 PCIe lanes.
High clocks keep it decent for gaming, though 6 cores are showing age.
130W TDP with 22nm is very power-hungry by modern standards.
- •High single-core speed for the era
- •Needs discrete GPU
- •Can bottleneck modern GPUs at 1080p
- •Good for multi-GPU AI setups due to 40 lanes
- •No native AI hardware
Architecture
22nm
Process Node
Ivy Bridge-E
Codename
6C / 12T
Core Config
15 MB
L3 Cache
130 W
TDP
Architecture Overview
The Core i7-4960X utilizes the full Ivy Bridge-E die, built on a 22nm process. It features 6 cores and 12 threads connected via a ring bus to a massive 15MB L3 cache. This is the highest binning of the Ivy Bridge-E silicon, allowing for a 3.6 GHz base clock and 4.0 GHz turbo while maintaining a 130W TDP. The architecture supports quad-channel DDR3-1866 memory, providing immense bandwidth for data-heavy applications. With 40 PCIe 3.0 lanes, it can support 4-way multi-GPU configurations or large NVMe storage arrays. The unlocked multiplier allows enthusiasts to push frequencies well beyond 4.5 GHz. Lacking integrated graphics, all silicon is dedicated to CPU compute. The 4960X represents the pinnacle of Intel's 22nm HEDT architecture, offering the best performance possible on the X79 platform before the transition to Haswell-E and DDR4.
CPU Design
6 cores, 12 threads, unlocked.
Memory Subsystem
Quad-channel DDR3-1866.
PCIe & I/O
40 lanes of PCIe 3.0.
Overclocking
Fully unlocked for extreme tuning.
- 22nm process
- PCIe 3.0
- Better power efficiency
Key Highlights
- 6 cores and 12 threads
- Massive 15MB L3 cache
- Unlocked multiplier
- 40 PCIe lanes
- High 4.0 GHz turbo clock
- Extremely high 130W TDP
- No integrated graphics
- Lacks AVX2
- End-of-life platform
History
The Core i7-4960X launched in September 2013 as the flagship of the Ivy Bridge-E lineup. It succeeded the i7-3970X, bringing the 22nm process to the Extreme Edition tier. At launch, it was the fastest desktop processor Intel offered, commanding a premium price of over $1,000.
It was highly sought after by extreme enthusiasts, benchmarketers, and professionals who needed the absolute best performance. The 4960X featured the full 15MB L3 cache and highest clock speeds of the generation. It was known for its incredible overclocking potential, often hitting 4.
6+ GHz on custom water cooling. However, its reign was short-lived; a year later, Intel released Haswell-E (i7-5960X), which brought 8 cores and DDR4 memory, making the 4960X obsolete. Today, it is remembered as the peak of the 6-core era, a time when Intel pushed clock speeds and cache sizes to the limit.
Improvements over Previous Generation
- 22nm process
- PCIe 3.0
- Better power efficiency
Alternatives & Competitors
Should You Buy It?
Not Recommended for the right buyer
Maxing out an existing X79 workstation.
Avoid if…
- Building a new PC
- Need modern features
- Care about power efficiency
Use Cases
Interesting Facts
It is the Extreme Edition of Ivy Bridge-E.
Features 15MB of L3 cache.
Has a 3.6 GHz base clock.
Turbo boosts up to 4.0 GHz.
Fully unlocked for overclocking.
Uses LGA 2011 socket.
TDP is 130W.
Supports quad-channel DDR3.
Has 40 PCIe 3.0 lanes.
Die size is 257 mm².
People Also Ask
Is the i7-4960X unlocked?
Yes, it features an unlocked multiplier.
What socket does the i7-4960X use?
It uses LGA 2011.
How many cores does the i7-4960X have?
It has 6 cores and 12 threads.
Does the i7-4960X have integrated graphics?
No, it requires a discrete GPU.
What is the TDP of the i7-4960X?
The TDP is 130 Watts.
What is the L3 cache size of the i7-4960X?
It has a massive 15MB L3 cache.
What is the base clock of the i7-4960X?
The base clock is 3.6 GHz.
How many PCIe lanes does it have?
It has 40 PCIe 3.0 lanes.
What generation is the i7-4960X?
It is an Ivy Bridge-E Extreme Edition.
Can I overclock the i7-4960X?
Yes, it is fully unlocked.
Frequently Asked Questions
Is the i7-4960X still good for gaming?
It can still game, but modern CPUs are much faster.
Does it support DDR4?
No, it supports DDR3 memory.
What is the max turbo boost?
The max turbo boost is 4.0 GHz.
Does it support AVX2?
No, it supports AVX but not AVX2.
What chipset does it use?
It uses the X79 chipset.
Does it support virtualization?
Yes, it supports VT-x and VT-d.
Is it good for video editing?
Yes, 6 cores and 15MB cache make it solid for editing.
How many transistors does it have?
It has 1.86 billion transistors.
What is the die size?
The die size is 257 mm².
What does the X mean in i7-4960X?
X stands for Extreme Edition, indicating an unlocked multiplier.