i7-6800K vs i9-9900K

VS

Aggregate performance score

Core i9-9900K
2018
8 cores / 16 threads, 95 Watt
11.49
+70%
Core i7-6800K
2016
6 cores / 12 threads, 140 Watt
6.76

Core i9-9900K outperforms Core i7-6800K by an impressive 70% based on our aggregate benchmark results.

Primary details

Comparing Core i9-9900K and Core i7-6800K processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking6861034
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation7.931.69
Market segmentDesktop processorDesktop processor
SeriesCore i9 (Desktop)no data
Power efficiency11.454.57
Architecture codenameCoffee Lake-R (2018−2019)Broadwell-E (2016)
Release date19 October 2018 (6 years ago)31 May 2016 (8 years ago)
Launch price (MSRP)$488$345

Cost-effectiveness evaluation

Performance per price, higher is better.

i9-9900K has 369% better value for money than i7-6800K.

Detailed specifications

Core i9-9900K and Core i7-6800K basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.

Physical cores8 (Octa-Core)6 (Hexa-Core)
Threads1612
Base clock speed3.6 GHz3.4 GHz
Boost clock speed5 GHz3.8 GHz
Bus typeDMI 3.0no data
Bus rate4 × 8 GT/sno data
L1 cache64K (per core)32 KB (per core)
L2 cache256K (per core)256 KB (per core)
L3 cache16 MB (shared)15 MB (shared)
Chip lithography14 nm14 nm
Die size178 mm2no data
Maximum core temperature100 °Cno data
Maximum case temperature (TCase)72 °C72 °C
64 bit support++
Windows 11 compatibility+-
Unlocked multiplier++

Compatibility

Information on Core i9-9900K and Core i7-6800K compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.

Number of CPUs in a configuration1 (Uniprocessor)1
SocketLGA-1151FCLGA2011
Power consumption (TDP)95 Watt140 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i9-9900K and Core i7-6800K. You'll probably need this information if you require some particular technology.

Instruction set extensionsIntel® SSE4.1, Intel® SSE4.2, Intel® AVX2no data
AES-NI++
AVX++
vPro+no data
Enhanced SpeedStep (EIST)++
Turbo Boost Technology2.02.0
Hyper-Threading Technology++
TSX+-
Idle States++
Thermal Monitoring+-
SIPP+-
Smart Responseno data+
Turbo Boost Max 3.0no data+

Security technologies

Core i9-9900K and Core i7-6800K technologies aimed at improving security, for example, by protecting against hacks.

TXT++
EDB++
Secure Key+no data
MPX+-
Identity Protection+-
SGXYes with Intel® MEno data
OS Guard+no data

Virtualization technologies

Virtual machine speed-up technologies supported by Core i9-9900K and Core i7-6800K are enumerated here.

AMD-V+-
VT-d++
VT-x++
EPT++

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i9-9900K and Core i7-6800K. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR4DDR4
Maximum memory size128 GB128 GB
Max memory channels24
Maximum memory bandwidth44.668 GB/sno data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardIntel UHD Graphics 630no data
Max video memory64 GBno data
Quick Sync Video+-
Clear Video+no data
Clear Video HD+no data
Graphics max frequency1.2 GHzno data
InTru 3D+no data

Graphics interfaces

Available interfaces and connections of Core i9-9900K and Core i7-6800K integrated GPUs.

Number of displays supported3no data

Graphics image quality

Maximum display resolutions supported by Core i9-9900K and Core i7-6800K integrated GPUs, including resolutions over different interfaces.

4K resolution support+no data
Max resolution over HDMI 1.44096 x 2304@24Hzno data
Max resolution over eDP4096 x 2304@60Hzno data
Max resolution over DisplayPort4096 x 2304@60Hzno data

Graphics API support

APIs supported by Core i9-9900K and Core i7-6800K integrated GPUs, sometimes API versions are included.

DirectX12no data
OpenGL4.5no data

Peripherals

Specifications and connection of peripherals supported by Core i9-9900K and Core i7-6800K.

PCIe version3.03.0
PCI Express lanes1628

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.


Combined synthetic benchmark score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

i9-9900K 11.49
+70%
i7-6800K 6.76

Passmark

Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.

i9-9900K 18251
+70%
i7-6800K 10739

GeekBench 5 Single-Core

GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.

i9-9900K 1702
+37.6%
i7-6800K 1237

GeekBench 5 Multi-Core

GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.

i9-9900K 8054
+42.2%
i7-6800K 5665

Gaming performance

Pros & cons summary


Performance score 11.49 6.76
Recency 19 October 2018 31 May 2016
Physical cores 8 6
Threads 16 12
Power consumption (TDP) 95 Watt 140 Watt

i9-9900K has a 70% higher aggregate performance score, an age advantage of 2 years, 33.3% more physical cores and 33.3% more threads, and 47.4% lower power consumption.

The Core i9-9900K is our recommended choice as it beats the Core i7-6800K in performance tests.


Should you still have questions on choice between Core i9-9900K and Core i7-6800K, ask them in Comments section, and we shall answer.

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Community ratings

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Questions & comments

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