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Intel Core i7-6800K @ 3.40GHz

Explore Intel Core i7-6800K @ 3.40GHz technical reviews, specifications and benchmark results, with practical context for performance, compatibility and upgrade comparisons.

Last updated: 2026-10-20
5.6/ 10
Technical rating

Good

Intel Core i7-6800K @ 3.40GHz is a Desktop processor with 6 cores and 12 threads. It runs at 3.4 GHz and boosts up to 3.8 GHz. It records a PassMark CPU Mark of 10689 and a single-thread rating of 2246. Its stated TDP is 140 W.

CPU Mark10,689
1,990 samples
Single Thread2,246
Overall rank#1,697
of 6,054
Reference price$52.56

Technical assessment

A summary based on specifications and results.

Good
5.6Good

Intel Core i7-6800K @ 3.40GHz is a Desktop processor with 6 cores and 12 threads. It runs at 3.4 GHz and boosts up to 3.8 GHz. It records a PassMark CPU Mark of 10689 and a single-thread rating of 2246. Its stated TDP is 140 W.

Specification context

What do these specifications mean in practice?

The Intel Core i7-6800K @ 3.40GHz is a Desktop released in 2016. Recorded specifications include 6 cores and 12 threads, up to 3.80 GHz turbo, a 140 W reference TDP, a 10,689 CPU Mark. Use these figures to understand its position, then compare the results with your software and the complete platform.

Reading guide

Read the performance results

The 10,689 CPU Mark is a broad overall-performance measure, while the 2,246 single-thread result adds context for less-parallel work. Compare the nearby alternatives on this page and do not treat one score as a verdict for every application.

Platform and compatibility

It uses socket LGA2011-V3. A matching socket is only the first check; confirm the official motherboard CPU-support list, BIOS revision and board power limits.

Memory and power

The 140 W TDP helps size the cooling class, but it is not the same as peak wall-power consumption.

FAQ

Common processor questions

What are the key Intel Core i7-6800K @ 3.40GHz specifications?

The main recorded details are 6 cores and 12 threads, up to 3.80 GHz turbo, a 140 W reference TDP, a 10,689 CPU Mark. The tables on this page show socket, memory, cache and graphics data when available.

Is the Intel Core i7-6800K @ 3.40GHz good for gaming?

The product name or CPU Mark alone cannot answer that. Check single-thread performance, core count, the target graphics card, gaming resolution and results from the games you play.

Which motherboards support the Intel Core i7-6800K @ 3.40GHz?

Start with LGA2011-V3 motherboards, then confirm the official CPU-support list and required BIOS revision for the exact board before buying.

How much power does the Intel Core i7-6800K @ 3.40GHz use?

The recorded reference TDP is 140 W. Real consumption can be lower or higher depending on power limits, motherboard, workload and cooling.

This guidance interprets recorded specifications and results; it does not claim hands-on device testing. Results can vary with motherboard, power, memory and cooling.

Multi-axis comparison

How does this processor compare?

A direct comparison with nearby processors from the same brand and a similar core count.

5 CPU

Overall and multi-core performance

A higher CPU Mark indicates stronger overall performance.

01AMD Ryzen 3 PRO 4355GEAMD10,693 points
02Intel Core i7-6800K @ 3.40GHzThis CPU10,689 points
03Intel Core i5-9600K @ 3.70GHzIntel10,652 points
04Intel Core i5-9600KF @ 3.70GHzIntel10,637 points
05Intel Core i7-9700T @ 2.00GHzIntel10,579 points

Single-thread performance

Measures speed in tasks that depend on one CPU thread.

03AMD Ryzen 3 PRO 4355GEAMD2,573 points
05Intel Core i7-6800K @ 3.40GHzThis CPU2,246 points

Performance per watt

Estimated as CPU Mark divided by TDP.

01AMD Ryzen 3 PRO 4355GEAMD305.5 Mark/W
05Intel Core i7-6800K @ 3.40GHzThis CPU76.4 Mark/W

Bars are relative to the processors shown here, not a global ranking of every CPU.

Detailed benchmark results

Snapshot from 2026-10-20

Data CompressionKBytes/Sec
161,292.00
Data EncryptionMBytes/Sec
2,945.00
Extended InstructionsMillion Matrices/Sec
10,326.00
Find Prime NumbersMillion Primes/Sec
47.00
Floating Point MathMOps/Sec
24,241.00
Integer MathMOps/Sec
37,110.00
PhysicsFrames/Sec
797.00
Random String SortingThousand Strings/Sec
20,385.00

Core specifications

BrandIntel
CategoryDesktop
Release year2016
SocketLGA2011-V3
Cores / threads6 / 12
Base clock3.40 GHz
Max turbo3.80 GHz
TDP140 W
Integrated graphics—

Memory support

—
Memory type—
Official speed—
Maximum capacity—

Cache hierarchy

L1I6 x 32 KB
L1D6 x 32 KB
L26 x 256 KB
L315 MB