Pentium Gold G6405T vs i9-11900K

Primary details

Comparing Core i9-11900K and Pentium Gold G6405T processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	417	1865
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	18.34	no data
Market segment	Desktop processor	Desktop processor
Power efficiency	12.02	5.68
Architecture codename	Rocket Lake (2021)	Comet Lake-R (2021)
Release date	16 March 2021 (3 years ago)	16 March 2021 (3 years ago)
Launch price (MSRP)	$539	$64

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core i9-11900K and Pentium Gold G6405T 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 cores	8 (Octa-Core)	2 (Dual-core)
Threads	16	4
Base clock speed	3.5 GHz	3.5 GHz
Boost clock speed	5.2 GHz	3.5 GHz
Bus rate	8 GT/s	8 GT/s
L1 cache	80 KB (per core)	64 KB (per core)
L2 cache	512 KB (per core)	256 KB (per core)
L3 cache	16 MB (shared)	4 MB (shared)
Chip lithography	14 nm	14 nm
Die size	276 mm2	no data
Maximum core temperature	100 °C	100 °C
Maximum case temperature (TCase)	72 °C	72 °C
64 bit support	+	+
Windows 11 compatibility	+	+
Unlocked multiplier	+	-

Compatibility

Information on Core i9-11900K and Pentium Gold G6405T 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 configuration	1	1
Socket	FCLGA1200	FCLGA1200
Power consumption (TDP)	125 Watt	35 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i9-11900K and Pentium Gold G6405T. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2, Intel® AVX-512	Intel® SSE4.1, Intel® SSE4.2
AES-NI	+	+
AVX	+	+
vPro	+	no data
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	2.0	-
Hyper-Threading Technology	+	+
TSX	+	-
Idle States	+	+
Thermal Monitoring	+	+
SIPP	+	-
Turbo Boost Max 3.0	+	-
Deep Learning Boost	+	-

Security technologies

Core i9-11900K and Pentium Gold G6405T technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	+
EDB	+	+
Secure Key	+	+
Identity Protection	+	+
SGX	-	Yes with Intel® ME
OS Guard	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Core i9-11900K and Pentium Gold G6405T are enumerated here.

VT-d	+	+
VT-x	+	+
EPT	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i9-11900K and Pentium Gold G6405T. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4	DDR4-2666
Maximum memory size	128 GB	128 GB
Max memory channels	2	2
Maximum memory bandwidth	50 GB/s	41.6 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card Compare	Intel UHD Graphics 750	Intel UHD Graphics 610
Max video memory	64 GB	64 GB
Quick Sync Video	+	+
Clear Video	+	+
Clear Video HD	+	+
Graphics max frequency	1.3 GHz	1.05 GHz
Execution Units	32	no data
InTru 3D	+	+

Graphics interfaces

Available interfaces and connections of Core i9-11900K and Pentium Gold G6405T integrated GPUs.

Number of displays supported

3

3

Graphics image quality

Maximum display resolutions supported by Core i9-11900K and Pentium Gold G6405T integrated GPUs, including resolutions over different interfaces.

4K resolution support	+	+
Max resolution over HDMI 1.4	4096x2160@60Hz	4096x2160@30Hz
Max resolution over eDP	5120 x 3200 @60Hz	4096x2304@60Hz
Max resolution over DisplayPort	5120 x 3200 @60Hz	4096x2304@60Hz

Graphics API support

APIs supported by Core i9-11900K and Pentium Gold G6405T integrated GPUs, sometimes API versions are included.

DirectX	12.1	12
OpenGL	4.5	4.5

Peripherals

Specifications and connection of peripherals supported by Core i9-11900K and Pentium Gold G6405T.

PCIe version	4.0	3.0
PCI Express lanes	20	16

Synthetic benchmark performance

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

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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.

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Pros & cons summary

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Performance score	16.48	2.18
Integrated graphics card	4.49	1.89
Physical cores	8	2
Threads	16	4
Power consumption (TDP)	125 Watt	35 Watt

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Should you still have questions on choice between Core i9-11900K and Pentium Gold G6405T, ask them in Comments section, and we shall answer.

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