Pentium G840 vs i5-6600K

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Aggregate performance score

Core i5-6600K
2015
4 cores / 4 threads, 91 Watt
4.13
+404%

Core i5-6600K outperforms Pentium G840 by a whopping 404% based on our aggregate benchmark results.

Primary details

Comparing Core i5-6600K and Pentium G840 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking14122606
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation0.774.61
Market segmentDesktop processorDesktop processor
SeriesIntel Core i5 (Desktop)no data
Power efficiency4.141.15
Architecture codenameSkylake (2015−2016)Sandy Bridge (2011−2013)
Release date5 August 2015 (9 years ago)22 May 2011 (13 years ago)
Launch price (MSRP)$242$60

Cost-effectiveness evaluation

Performance per price, higher is better.

Pentium G840 has 499% better value for money than i5-6600K.

Detailed specifications

Core i5-6600K and Pentium G840 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 cores4 (Quad-Core)2 (Dual-core)
Threads42
Base clock speed3.5 GHz2.8 GHz
Boost clock speed3.9 GHz2.8 GHz
Bus typeDMI 3.0no data
Bus rate4 × 8 GT/sno data
Multiplier35no data
L1 cache64 KB (per core)64 KB (per core)
L2 cache256 KB (per core)256 KB (per core)
L3 cache6 MB (shared)3 MB (shared)
Chip lithography14 nm32 nm
Die size122 mm2131 mm2
Maximum core temperatureno data69 °C
Maximum case temperature (TCase)64 °Cno data
Number of transistorsno data504 million
64 bit support++
Windows 11 compatibility--
Unlocked multiplier+-

Compatibility

Information on Core i5-6600K and Pentium G840 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
SocketFCLGA1151FCLGA1155
Power consumption (TDP)91 Watt65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i5-6600K and Pentium G840. 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)++
Turbo Boost Technology2.0-
Hyper-Threading Technology--
TSX+-
Idle States++
Thermal Monitoring++
Flex Memory Accessno data+
FDIno data+
Fast Memory Accessno data+

Security technologies

Core i5-6600K and Pentium G840 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 i5-6600K and Pentium G840 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i5-6600K and Pentium G840. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR3, DDR4DDR3
Maximum memory size64 GB32 GB
Max memory channels22
Maximum memory bandwidth34.134 GB/s21 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardIntel HD Graphics 530Intel® HD Graphics for 2nd Generation Intel® Processors
Max video memory64 GBno data
Quick Sync Video+-
Clear Video+no data
Clear Video HD+-
Graphics max frequency1.15 GHz1.1 GHz
InTru 3D+-

Graphics interfaces

Available interfaces and connections of Core i5-6600K and Pentium G840 integrated GPUs.

Number of displays supported32
eDP+no data
DisplayPort+-
HDMI+-
DVI+no data

Graphics image quality

Maximum display resolutions supported by Core i5-6600K and Pentium G840 integrated GPUs, including resolutions over different interfaces.

4K resolution support+no data
Max resolution over HDMI 1.44096x2304@24Hzno data
Max resolution over eDP4096x2304@60Hzno data
Max resolution over DisplayPort4096x2304@60Hzno data
Max resolution over VGAN/Ano data

Graphics API support

APIs supported by Core i5-6600K and Pentium G840 integrated GPUs, sometimes API versions are included.

DirectX12no data
OpenGL4.5no data

Peripherals

Specifications and connection of peripherals supported by Core i5-6600K and Pentium G840.

PCIe version3.02.0
PCI Express lanes16no data

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.

i5-6600K 4.13
+404%
Pentium G840 0.82

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.

i5-6600K 6327
+405%
Pentium G840 1253

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.

i5-6600K 1432
+217%
Pentium G840 452

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.

i5-6600K 4042
+412%
Pentium G840 789

Gaming performance

Pros & cons summary


Performance score 4.13 0.82
Recency 5 August 2015 22 May 2011
Physical cores 4 2
Threads 4 2
Chip lithography 14 nm 32 nm
Power consumption (TDP) 91 Watt 65 Watt

i5-6600K has a 403.7% higher aggregate performance score, an age advantage of 4 years, 100% more physical cores and 100% more threads, and a 128.6% more advanced lithography process.

Pentium G840, on the other hand, has 40% lower power consumption.

The Core i5-6600K is our recommended choice as it beats the Pentium G840 in performance tests.


Should you still have questions on choice between Core i5-6600K and Pentium G840, ask them in Comments section, and we shall answer.

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Intel Core i5-6600K
Core i5-6600K
Intel Pentium G840
Pentium G840

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Community ratings

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Questions & comments

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