CPU Comparison
Intel Core i7-6850K vs Intel Core i7-9800X
A side-by-side comparison of specs, performance and value. The Intel Core i7-6850K is a six-core, 12-thread high-end desktop processor on the X99 platform, featuring 40 PCI Express 3.0 lanes, quad-channel DDR4-2400 memory support, and an unlocked multiplier.
The Bottom Line
Overview & Launch
Specifications Compared
Performance Compared
Productivity
Gaming
Virtualization
Efficiency
Specialized Performance
AI / ML
- No dedicated AI acceleration hardware; runs only CPU-based inference.
- AVX2 support helps with some vectorized compute workloads.
- No dedicated AI or deep learning acceleration hardware.
- Suitable for CPU-based inference and light experimentation only.
Content Creation
Gaming
- Base and turbo clocks are sufficient for high-refresh gaming with a capable GPU.
- PCIe 3.0 x16 remains viable for current graphics cards.
- Gaming performance is limited by older IPC and DDR4-2400 compared to newer platforms.
- Strong single-core clocks up to 4.5 GHz help gaming performance.
- Quad-channel memory can benefit some CPU-limited titles.
- Modern gaming-optimized CPUs often surpass it in 1% low fps and efficiency.
Industry Impact
Best CPU by Use Case
Target Audience
Strengths & Weaknesses
Pros
- Six cores and 12 threads
- 40 PCIe 3.0 lanes
- Quad-channel DDR4-2400
- Unlocked multiplier with Turbo Boost Max 3.0
- Strong I/O expansion for multi-GPU/NVMe
- VT-x and VT-d support for virtualization
Cons
- No integrated graphics
- High 140 W TDP
- Discontinued platform with limited future upgrade path
- Lower memory speed limit (DDR4-2400)
- Not on official Windows 11 supported processor list
Pros
- 8 cores and 16 threads handle multi-threaded workloads well
- 44 PCIe 3.0 lanes for multi-GPU and NVMe setups
- Quad-channel DDR4-2666 with 128 GB capacity
- Unlocked multiplier for flexible overclocking
- Solder TIM for improved thermals under load
- AVX-512 support for floating-point-intensive tasks
Cons
- High 165 W TDP and relatively low efficiency vs newer CPUs
- Older 14 nm process with no DDR5 or PCIe 4.0+
- No integrated graphics, requiring a discrete GPU
- Discontinued platform with limited long-term upgrade options
- Newer mainstream 8-core CPUs often match or beat it in gaming and efficiency
Competitors & Alternatives
Intel Core i7-6850K
- AMD Ryzen 7 1800XRival
Creator
- AMD Ryzen 5 1600XRival
Mainstream
- Intel Core i7-7700KRival
Gaming
- Compare head-to-headIntel Core i7-5820KRival
Workstation
- RivalCompare head-to-head
Much faster gaming and creator performance on a newer platform with upgrade options.
Compare head-to-head- AMD Ryzen 9 5900XAlt
Significantly higher multi-core performance and efficiency on AM4.
- AMD Ryzen 7 5800XAlt
Strong single and multi-threaded performance for gaming and productivity.
- Intel Core i7-14700KAlt
Modern high-performance option with DDR5 and PCIe 5.0 support.
Intel Core i7-9800X
- AMD Ryzen 7 2700XRival
Mainstream 8-core
- AMD Ryzen Threadripper 2920XRival
HEDT 12-core
- Intel Core i9-9900KRival
Mainstream 8-core Gaming
- Intel Core i7-7820XRival
Previous-gen HEDT 8-core
- AMD Ryzen 9 3900XRival
High-Performance 12-core
Same platform with two more cores and slightly better performance if you stay on X299.
Compare head-to-head- AMD Ryzen 9 7900Alt
Much more efficient modern platform with DDR5 and PCIe 5.0 if you are building new.
- Intel Core i7-14700KAlt
Far better gaming and efficiency on a mainstream platform with some creator workload capability.
- AMD Ryzen 9 5900XAlt
Strong multi-threaded performance with better efficiency and a more modern platform.
- AMD Ryzen Threadripper 2950XAlt
Much higher core count for heavily multi-threaded workstation workloads, though power is higher.
Our Verdict on Each
A capable HEDT chip with strong multi-threaded performance and plentiful I/O for its time, but high power draw and a discontinued platform make it relevant mainly as a budget used upgrade.
Best for: Upgrade for existing X99/LGA2011-v3 systems seeking more cores or PCIe lanes at low cost.
Read the full reviewA solid HEDT processor for users who need quad-channel memory and 44 PCIe lanes, but outclassed in efficiency and single-thread performance by newer mainstream and HEDT parts.
Best for: Used or discounted X299 workstation build where quad-channel memory and 44 PCIe lanes are critical and platform cost is low.
Read the full reviewFrequently Asked Questions
Which is better, Intel Core i7-6850K or Intel Core i7-9800X?
Based on our editorial ratings, the Intel Core i7-9800X comes out ahead with a score of 8/10. 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 Intel Core i7-9800X?
For gaming, the Intel Core i7-9800X leads with a gaming performance score of 78/100 among Intel Core i7-6850K and Intel Core i7-9800X.
Which uses less power?
The Intel Core i7-6850K has the lowest rated TDP. Power draw across these chips: Intel Core i7-6850K (140 W), Intel Core i7-9800X (165 W).
Do Intel Core i7-6850K and Intel Core i7-9800X use the same socket?
No. They use different sockets (Intel Core i7-6850K: LGA2011-v3, Intel Core i7-9800X: FCLGA2066), so each needs a compatible motherboard.
Which has more cores?
The Intel Core i7-9800X has the most cores. Core counts: Intel Core i7-6850K (6 cores), Intel Core i7-9800X (8 cores).