Pentium Gold 6405U vs i9-9900K

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Aggregate performance score

Core i9-9900K
2018
8 cores / 16 threads, 95 Watt
11.93
+563%

Core i9-9900K outperforms Pentium Gold 6405U by a whopping 563% based on our aggregate benchmark results.

Primary details

Comparing Core i9-9900K and Pentium Gold 6405U processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking6712022
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation8.11no data
Market segmentDesktop processorLaptop
SeriesCore i9 (Desktop)Intel Comet Lake
Power efficiency11.4510.94
Architecture codenameCoffee Lake-R (2018−2019)Comet Lake-U (2019−2020)
Release date8 October 2018 (6 years ago)31 October 2019 (5 years ago)
Launch price (MSRP)$488$161

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Core i9-9900K and Pentium Gold 6405U 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)2 (Dual-core)
Threads164
Base clock speed3.6 GHz2.4 GHz
Boost clock speed5 GHz2.4 GHz
Bus typeDMI 3.0no data
Bus rate4 × 8 GT/s4 GT/s
L1 cache512 KB256 KB
L2 cache2 MB1 MB
L3 cache16 MB (shared)2 MB
Chip lithography14 nm14 nm
Die size178 mm2no data
Maximum core temperature100 °C100 °C
Maximum case temperature (TCase)72 °Cno data
64 bit support++
Windows 11 compatibility++
Unlocked multiplier+-

Compatibility

Information on Core i9-9900K and Pentium Gold 6405U 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-1151FCBGA1528
Power consumption (TDP)95 Watt15 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i9-9900K and Pentium Gold 6405U. You'll probably need this information if you require some particular technology.

Instruction set extensionsIntel® SSE4.1, Intel® SSE4.2, Intel® AVX2Intel® SSE4.1, Intel® SSE4.2
AES-NI++
AVX+-
vPro+no data
Enhanced SpeedStep (EIST)++
Speed Shiftno data+
Turbo Boost Technology2.0-
Hyper-Threading Technology++
TSX+-
Idle States++
Thermal Monitoring++
Flex Memory Accessno data+
SIPP+-

Security technologies

Core i9-9900K and Pentium Gold 6405U technologies aimed at improving security, for example, by protecting against hacks.

TXT+-
EDB++
Secure Key++
MPX+-
Identity Protection++
SGXYes with Intel® MEYes with Intel® ME
OS Guard++

Virtualization technologies

Virtual machine speed-up technologies supported by Core i9-9900K and Pentium Gold 6405U 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 Pentium Gold 6405U. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR4DDR4
Maximum memory size128 GB64 GB
Max memory channels22
Maximum memory bandwidth44.668 GB/s37.5 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardIntel UHD Graphics 630Intel® UHD Graphics for 10th Gen Intel® Processors
Max video memory64 GB32 GB
Quick Sync Video++
Clear Video++
Clear Video HD++
Graphics max frequency1.2 GHz950 MHz
InTru 3D+no data

Graphics interfaces

Available interfaces and connections of Core i9-9900K and Pentium Gold 6405U integrated GPUs.

Number of displays supported33
eDPno data+
DisplayPort-+
HDMI-+
DVIno data+

Graphics image quality

Maximum display resolutions supported by Core i9-9900K and Pentium Gold 6405U integrated GPUs, including resolutions over different interfaces.

4K resolution support++
Max resolution over HDMI 1.44096 x 2304@24Hz4096x2304@24Hz
Max resolution over eDP4096 x 2304@60Hz4096x2304@60Hz
Max resolution over DisplayPort4096 x 2304@60Hz4096x2304@60Hz

Graphics API support

APIs supported by Core i9-9900K and Pentium Gold 6405U integrated GPUs, sometimes API versions are included.

DirectX1212
OpenGL4.54.5

Peripherals

Specifications and connection of peripherals supported by Core i9-9900K and Pentium Gold 6405U.

PCIe version3.02.0
PCI Express lanes1612

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 11.93
+563%
Pentium Gold 6405U 1.80

Geekbench 5.5 Multi-Core

i9-9900K 8845
+570%
Pentium Gold 6405U 1320

Gaming performance

Pros & cons summary


Performance score 11.93 1.80
Recency 8 October 2018 31 October 2019
Physical cores 8 2
Threads 16 4
Power consumption (TDP) 95 Watt 15 Watt

i9-9900K has a 562.8% higher aggregate performance score, and 300% more physical cores and 300% more threads.

Pentium Gold 6405U, on the other hand, has an age advantage of 1 year, and 533.3% lower power consumption.

The Core i9-9900K is our recommended choice as it beats the Pentium Gold 6405U in performance tests.

Note that Core i9-9900K is a desktop processor while Pentium Gold 6405U is a notebook one.


Should you still have questions on choice between Core i9-9900K and Pentium Gold 6405U, ask them in Comments section, and we shall answer.

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Intel Core i9-9900K
Core i9-9900K
Intel Pentium Gold 6405U
Pentium Gold 6405U

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Community ratings

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Questions & comments

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