CPU Comparison

Intel Core i7-6850K vs Core i7-7820X

A side-by-side comparison of specs, performance and value. The Intel Core i7-6850K is a high-end desktop processor that occupies the middle tier of the Broadwell-E lineup. Engineered for demanding enthusiasts and professional creators, it features six cores and twelve threads, providing substantial parallel processing power. It operates at a base clock of 3.6 GHz and can boost up to 4.0 GHz using Intel Turbo Boost Max 3.0, ensuring snappy single-threaded performance when needed. Unlike the entry-level 6800K, the 6850K offers a full 40 PCIe 3.0 lanes, unlocking maximum expansion potential for quad-GPU setups or massive NVMe storage arrays. It utilizes the LGA 2011-v3 socket and supports quad-channel DDR4 memory, delivering up to 76.8 GB/s of bandwidth. With a 140-watt TDP, it is a power-hungry chip designed for robust cooling. Lacking integrated graphics, it targets users who rely on discrete GPUs, excelling in complex 3D rendering, heavy video editing, and intensive virtualization environments where PCIe lanes and memory bandwidth are critical bottlenecks.

Top pick
Intel · Core i7
Intel Core i7-6850K
6C / 12T4 GHz140 W
8.2
Full review
Intel · X-Series 7th Gen
Core i7-7820X
8C / 16T4.5 GHz140 W
8
Full review

The Bottom Line

Overview & Launch

Brand
Intel
Intel
Market
Desktop
Desktop
Segment
High-End Desktop
High-End Desktop
Generation
Core i7 (Broadwell-E)
7th Gen X-Series
Launched
2016
2017
Status
End-of-life
End-of-life
Codename
Broadwell-E
Skylake-X
Series
Core i7
X-Series 7th Gen
Family
6th Generation
Skylake-X
Predecessor
Intel Core i7-5930K
Core i7-6900K
Successor
Intel Core i7-7820X
Core i9-9800X

Specifications Compared

Cores & Clocks
Cores
6
8
Threads
12
16
Base Clock
3.6 GHz
3.6 GHz
Boost Clock
4 GHz
4.5 GHz
Cache & Power
L3 Cache
15 MB
11 MB
TDP
140 W
140 W
Architecture
Architecture
Broadwell-E
Skylake-X
Process Node
14nm
14nm
Memory
Memory Type
DDR4
DDR4
Memory Speed
2400 MT/s
2666 MT/s
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
28
Integrated GPU
None
None
Unlocked
Yes
Yes

Performance Compared

Productivity

Intel Core i7-6850K78

6 cores handle heavy rendering well, but lack modern IPC.

Core i7-7820X

Gaming

Intel Core i7-6850K68

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

Core i7-7820X

Virtualization

Intel Core i7-6850K85

40 PCIe lanes and 12 threads make it excellent for VMs.

Core i7-7820X

Efficiency

Intel Core i7-6850K40

140W TDP is power-hungry by modern standards.

Core i7-7820X

Specialized Performance

AI / ML

Intel Core i7-6850KLimited
  • No AI hardware
  • CPU inference is moderate due to core count
Core i7-7820X

No data

Content Creation

Intel Core i7-6850KExcellent
Premiere ProBlenderAutoCADDaVinci Resolve
Core i7-7820X

No data

Gaming

Intel Core i7-6850KGood
  • Can handle modern games with a discrete GPU
  • Lower single-core speed limits high-refresh gaming
  • Great for multi-tasking while gaming
Core i7-7820X

No data

Industry Impact

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

Best CPU by Use Case

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

Target Audience

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

Strengths & Weaknesses

Intel Core i7-6850K

Pros

  • 6 cores / 12 threads
  • Full 40 PCIe lanes
  • Quad-channel memory
  • Unlocked for overclocking

Cons

  • High 140W TDP
  • Older 14nm process
  • Lacks integrated graphics
  • Expensive on the used market
Core i7-7820X

Pros

  • Strong 8-core multi-threaded performance
  • Turbo Boost Max 3.0 for high single-core bursts
  • Quad-channel memory support
  • AVX-512 support

Cons

  • High 140W TDP
  • Runs very hot (uses thermal paste)
  • Lacks integrated graphics
  • Expensive X299 platform

Competitors & Alternatives

Intel Core i7-6850K

Core i7-7820X

Our Verdict on Each

An excellent HEDT chip for its time, offering 40 PCIe lanes and strong multi-core performance, though outclassed by modern hardware.

Best for: Upgrading an X99 system for maximum PCIe expansion.

Read the full review
Core i7-7820XSituational

An excellent 8-core HEDT processor for 2017, offering a great balance of frequency and core count, though it suffers from high thermals.

Best for: Used budget workstation build

Read the full review

Frequently Asked Questions

Which is better, Intel Core i7-6850K or Core i7-7820X?

Based on our editorial ratings, the Intel Core i7-6850K comes out ahead with a score of 8.2/10. 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 i7-6850K or Core i7-7820X?

For gaming, the Intel Core i7-6850K leads with a gaming performance score of 68/100 among Intel Core i7-6850K and Core i7-7820X.

Do Intel Core i7-6850K and Core i7-7820X use the same socket?

No. They use different sockets (Intel Core i7-6850K: Intel Socket 2011-3, Core i7-7820X: LGA 2066), so each needs a compatible motherboard.

Which has more cores?

The Core i7-7820X has the most cores. Core counts: Intel Core i7-6850K (6 cores), Core i7-7820X (8 cores).

Which is faster in multi-core benchmarks?

The Intel Core i7-6850K posts the highest multi-core benchmark score. Multi-core results: Intel Core i7-6850K (13,500), Core i7-7820X (0). Benchmark figures are approximate and workload-dependent.