Pentium G640T vs Pentium G840

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Aggregate performance score

Pentium G840
2011
2 cores / 2 threads, 65 Watt
0.82
+10.8%

Pentium G840 outperforms Pentium G640T by a moderate 11% based on our aggregate benchmark results.

Primary details

Comparing Pentium G840 and Pentium G640T processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking26062681
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation4.61no data
Market segmentDesktop processorDesktop processor
Power efficiency1.151.93
Architecture codenameSandy Bridge (2011−2013)Sandy Bridge (2011−2013)
Release date22 May 2011 (13 years ago)3 June 2012 (12 years ago)
Launch price (MSRP)$60no data

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Pentium G840 and Pentium G640T 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 cores2 (Dual-core)2 (Dual-core)
Threads22
Base clock speed2.8 GHz2.4 GHz
Boost clock speed2.8 GHz2.4 GHz
Bus rateno data5 GT/s
L1 cache64 KB (per core)64 KB (per core)
L2 cache256 KB (per core)256 KB (per core)
L3 cache3 MB (shared)3 MB (shared)
Chip lithography32 nm32 nm
Die size131 mm2131 mm2
Maximum core temperature69 °C65 °C
Number of transistors504 million504 million
64 bit support++
Windows 11 compatibility--

Compatibility

Information on Pentium G840 and Pentium G640T 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 configuration11
SocketFCLGA1155FCLGA1155
Power consumption (TDP)65 Watt35 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Pentium G840 and Pentium G640T. You'll probably need this information if you require some particular technology.

Instruction set extensionsIntel® SSE4.1, Intel® SSE4.2Intel® SSE4.1, Intel® SSE4.2
AES-NI++
AVX++
Enhanced SpeedStep (EIST)++
Turbo Boost Technology--
Hyper-Threading Technology--
Idle States++
Thermal Monitoring++
Flex Memory Access++
FDI++
Fast Memory Access++

Security technologies

Pentium G840 and Pentium G640T technologies aimed at improving security, for example, by protecting against hacks.

TXT--
EDB++

Virtualization technologies

Virtual machine speed-up technologies supported by Pentium G840 and Pentium G640T are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Pentium G840 and Pentium G640T. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR3DDR3
Maximum memory size32 GB32 GB
Max memory channels22
Maximum memory bandwidth21 GB/s17 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardIntel® HD Graphics for 2nd Generation Intel® ProcessorsIntel® HD Graphics for 2nd Generation Intel® Processors
Clear Video HD--
Graphics max frequency1.1 GHz1.1 GHz
InTru 3D--

Graphics interfaces

Available interfaces and connections of Pentium G840 and Pentium G640T integrated GPUs.

Number of displays supported22

Peripherals

Specifications and connection of peripherals supported by Pentium G840 and Pentium G640T.

PCIe version2.02.0
PCI Express lanesno data16

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.

Pentium G840 0.82
+10.8%
Pentium G640T 0.74

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.

Pentium G840 1253
+10%
Pentium G640T 1139

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.

Pentium G840 452
+19.3%
Pentium G640T 379

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.

Pentium G840 789
+7.1%
Pentium G640T 737

Gaming performance

Pros & cons summary


Performance score 0.82 0.74
Recency 22 May 2011 3 June 2012
Power consumption (TDP) 65 Watt 35 Watt

Pentium G840 has a 10.8% higher aggregate performance score.

Pentium G640T, on the other hand, has an age advantage of 1 year, and 85.7% lower power consumption.

The Pentium G840 is our recommended choice as it beats the Pentium G640T in performance tests.


Should you still have questions on choice between Pentium G840 and Pentium G640T, ask them in Comments section, and we shall answer.

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Intel Pentium G840
Pentium G840
Intel Pentium G640T
Pentium G640T

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Community ratings

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Questions & comments

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