CPU Comparison

Intel Core i7-6950X vs Intel Core i9-7940X

A side-by-side comparison of specs, performance and value. The Intel Core i7-6950X is a legendary extreme edition desktop processor that redefined the high-end desktop (HEDT) market upon its release. As the flagship of the Broadwell-E architecture, it was the first mainstream consumer CPU to feature ten cores and twenty threads, offering unprecedented parallel processing power. Operating at a base clock of 3.0 GHz and boosting up to 4.0 GHz via Intel Turbo Boost Max 3.0, it balances immense multi-threaded capability with strong single-threaded responsiveness. It utilizes the LGA 2011-v3 socket and supports quad-channel DDR4 memory, maximizing data throughput for data-heavy applications. With 40 PCIe 3.0 lanes and a massive 25 MB of L3 cache, it is designed for uncompromised expansion and efficient data handling. The 140-watt TDP requires serious cooling. Lacking integrated graphics, this $1723 processor was exclusively for extreme enthusiasts and professionals, dominating workloads like 4K video editing, complex 3D rendering, and heavy virtualization, setting a new standard for desktop compute performance.

Top pick
Intel · Core i7
Intel Core i7-6950X
10C / 20T4 GHz140 W
9
Full review
Intel · Core i9
Intel Core i9-7940X
14C / 28T4.4 GHz165 W
7.5
Full review

The Bottom Line

Overview & Launch

Brand
Intel
Intel
Market
Desktop
High-End Desktop
Segment
High-End Desktop
Generation
Core i7 Extreme (Broadwell-E)
7th Gen X-Series
Launched
2016
2017
Status
End-of-life
Discontinued
Codename
Broadwell-E
Skylake-X
Series
Core i7
Core i9
Family
6th Generation
X-Series 7th Gen (Core i9)
Predecessor
Intel Core i7-6900K
Intel Core i7-6950X
Successor
Intel Core i9-7900X
Intel Core i9-9940X

Specifications Compared

Cores & Clocks
Cores
10
14
Threads
20
28
Base Clock
3 GHz
3.1 GHz
Boost Clock
4 GHz
4.4 GHz
Cache & Power
L3 Cache
25 MB
19.25 MB
TDP
140 W
165 W
Architecture
Architecture
Broadwell-E
Skylake-X
Process Node
14nm
14nm
Memory
Memory Type
DDR4
DDR4
Memory Speed
2400 MT/s
DDR4-2666
Memory Channels
Quad (4)
Quad (4)
Max Memory
128 GB
128 GB
Platform & I/O
Socket
Intel Socket 2011-3
LGA 2066
PCIe Version
Gen 3
PCIe 3.0
PCIe Lanes
40
44
Integrated GPU
None
None
Unlocked
Yes
Yes

Performance Compared

Productivity

Intel Core i7-6950XBest90

10 cores handle heavy rendering excellently, but lack modern IPC.

Intel Core i9-7940X80

Solid multi-threaded performance for its era, though surpassed by modern 12 to 14-core mainstream parts.

Gaming

Intel Core i7-6950X70

Good for 60fps gaming, but single-core speed limits high-refresh performance.

Intel Core i9-7940XBest75

Capable of high-refresh 1080p gaming, but newer mainstream CPUs deliver better frame rates and 1% lows.

Virtualization

Intel Core i7-6950XBest95

40 PCIe lanes and 20 threads make it perfect for VMs.

Intel Core i9-7940X85

Great for home labs and multiple VMs thanks to 14 cores and quad-channel memory.

Efficiency

Intel Core i7-6950X40

140W TDP is power-hungry by modern standards.

Intel Core i9-7940X40

Very poor efficiency compared to modern architectures, running hot and drawing significant power under load.

Specialized Performance

AI / ML

Intel Core i7-6950XLimited
  • No AI hardware
  • CPU inference is excellent due to core count
Intel Core i9-7940XLimited
  • AVX-512 helps with some vector calculations
  • No dedicated AI acceleration hardware
  • CPU-based inference is significantly slower than modern NPUs or GPUs

Content Creation

Intel Core i7-6950XExcellent
Premiere ProBlenderAutoCADDaVinci Resolve
Intel Core i9-7940XVery Good
Adobe Premiere ProBlenderAutodesk MayaHandbrakeDaVinci Resolve

Gaming

Intel Core i7-6950XGood
  • Can handle modern games with a discrete GPU
  • Lower single-core speed limits high-refresh gaming
  • Great for multi-tasking while gaming
Intel Core i9-7940XGood
  • High clock speeds help push frames in CPU-bound scenarios
  • Mesh architecture adds slight latency compared to ring bus designs
  • Lacks the cache size and IPC of modern gaming CPUs

Industry Impact

Gaming
Moderate
Moderate
Workstations
Very High
High
Content Creation
Very High
High
Virtualization
Very High
Moderate

Best CPU by Use Case

4K Video Editing
Excellent
Very Good
3D Rendering
Excellent
Very Good
Virtual Machines
Excellent
Good
Streaming
Excellent
High-Refresh Gaming
Good
Multi-GPU Compute
Excellent
Modern Gaming
Fair

Target Audience

Gamers
Targeted
Content Creators
Targeted
Targeted
Developers
Targeted
Targeted
Workstation Users
Targeted
Targeted
Streamers
Targeted
Targeted
Office / Productivity
Students

Strengths & Weaknesses

Intel Core i7-6950X

Pros

  • 10 cores / 20 threads
  • Full 40 PCIe lanes
  • Massive 25 MB L3 cache
  • Quad-channel memory

Cons

  • High 140W TDP
  • Older 14nm process
  • Lacks integrated graphics
  • Extremely expensive
Intel Core i9-7940X

Pros

  • 14 cores and 28 threads
  • 44 PCIe 3.0 lanes for expansive I/O
  • Quad-channel DDR4 memory support
  • AVX-512 instruction support
  • Unlocked multiplier for overclocking

Cons

  • Runs extremely hot under heavy loads
  • High power consumption for the performance delivered
  • Lacks integrated graphics
  • Discontinued and outdated platform
  • Outpaced by modern mainstream CPUs in efficiency and IPC

Competitors & Alternatives

Intel Core i7-6950X

Intel Core i9-7940X

Our Verdict on Each

A historic processor that brought 10 cores to consumers. It's a powerhouse for legacy workflows but is completely outclassed by modern mainstream CPUs.

Best for: Upgrading an X99 system for maximum multi-core rendering.

Read the full review

A potent HEDT processor for its time, the i9-7940X offers strong multi-core capabilities but suffers from high heat output and is outpaced by modern mainstream chips.

Best for: Upgrading an existing LGA 2066 workstation on a tight budget.

Read the full review

Frequently Asked Questions

Which is better, Intel Core i7-6950X or Intel Core i9-7940X?

Based on our editorial ratings, the Intel Core i7-6950X comes out ahead with a score of 9/10. That said, the best choice depends on your workload — check the spec and performance breakdown above for gaming, productivity and efficiency differences.

Which is faster for gaming, Intel Core i7-6950X or Intel Core i9-7940X?

For gaming, the Intel Core i9-7940X leads with a gaming performance score of 75/100 among Intel Core i7-6950X and Intel Core i9-7940X.

Which uses less power?

The Intel Core i7-6950X has the lowest rated TDP. Power draw across these chips: Intel Core i7-6950X (140 W), Intel Core i9-7940X (165 W).

Do Intel Core i7-6950X and Intel Core i9-7940X use the same socket?

No. They use different sockets (Intel Core i7-6950X: Intel Socket 2011-3, Intel Core i9-7940X: LGA 2066), so each needs a compatible motherboard.

Which has more cores?

The Intel Core i9-7940X has the most cores. Core counts: Intel Core i7-6950X (10 cores), Intel Core i9-7940X (14 cores).

Which is faster in multi-core benchmarks?

The Intel Core i7-6950X posts the highest multi-core benchmark score. Multi-core results: Intel Core i7-6950X (22,000). Benchmark figures are approximate and workload-dependent.