Pentium Gold G6405T vs Pentium G645T

Aggregate performance score

Pentium G645T
2012
2 cores / 2 threads, 35 Watt
0.78
Pentium Gold G6405T
2021
2 cores / 4 threads, 35 Watt
2.11
+171%

Pentium Gold G6405T outperforms Pentium G645T by a whopping 171% based on our aggregate benchmark results.

Primary details

Comparing Pentium G645T and Pentium Gold G6405T processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking26271868
Place by popularitynot in top-100not in top-100
Market segmentDesktop processorDesktop processor
Power efficiency2.105.68
Architecture codenameSandy Bridge (2011−2013)Comet Lake-R (2021)
Release date2 September 2012 (12 years ago)16 March 2021 (3 years ago)
Launch price (MSRP)no data$64

Detailed specifications

Pentium G645T 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 cores2 (Dual-core)2 (Dual-core)
Threads24
Base clock speed2.5 GHz3.5 GHz
Boost clock speed2.5 GHz3.5 GHz
Bus rate5 GT/s8 GT/s
L1 cache64 KB (per core)64 KB (per core)
L2 cache256 KB (per core)256 KB (per core)
L3 cache3 MB (shared)4 MB (shared)
Chip lithography32 nm14 nm
Die size131 mm2no data
Maximum core temperature65 °C100 °C
Maximum case temperature (TCase)no data72 °C
Number of transistors504 millionno data
64 bit support++
Windows 11 compatibility-+

Compatibility

Information on Pentium G645T 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 configuration11
SocketFCLGA1155FCLGA1200
Power consumption (TDP)35 Watt35 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Pentium G645T and Pentium Gold G6405T. 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+no data
Turbo Boost Max 3.0no data-
FDI+no data
Fast Memory Access+no data

Security technologies

Pentium G645T and Pentium Gold G6405T technologies aimed at improving security, for example, by protecting against hacks.

TXT-+
EDB++
Secure Keyno data+
Identity Protection-+
SGXno dataYes with Intel® ME
OS Guardno data+

Virtualization technologies

Virtual machine speed-up technologies supported by Pentium G645T and Pentium Gold G6405T are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Pentium G645T and Pentium Gold G6405T. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR3DDR4-2666
Maximum memory size32 GB128 GB
Max memory channels22
Maximum memory bandwidth17 GB/s41.6 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardIntel® HD Graphics for 2nd Generation Intel® ProcessorsIntel UHD Graphics 610
Max video memoryno data64 GB
Quick Sync Video-+
Clear Videono data+
Clear Video HD-+
Graphics max frequency1.1 GHz1.05 GHz
InTru 3D-+

Graphics interfaces

Available interfaces and connections of Pentium G645T and Pentium Gold G6405T integrated GPUs.

Number of displays supported23

Graphics image quality

Maximum display resolutions supported by Pentium G645T and Pentium Gold G6405T integrated GPUs, including resolutions over different interfaces.

4K resolution supportno data+
Max resolution over HDMI 1.4no data4096x2160@30Hz
Max resolution over eDPno data4096x2304@60Hz
Max resolution over DisplayPortno data4096x2304@60Hz

Graphics API support

APIs supported by Pentium G645T and Pentium Gold G6405T integrated GPUs, sometimes API versions are included.

DirectXno data12
OpenGLno data4.5

Peripherals

Specifications and connection of peripherals supported by Pentium G645T and Pentium Gold G6405T.

PCIe version2.03.0
PCI Express lanes1616

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 G645T 0.78
Pentium Gold G6405T 2.11
+171%

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 G645T 1228
Pentium Gold G6405T 3341
+172%

Gaming performance

Pros & cons summary


Performance score 0.78 2.11
Recency 2 September 2012 16 March 2021
Threads 2 4
Chip lithography 32 nm 14 nm

Pentium Gold G6405T has a 170.5% higher aggregate performance score, an age advantage of 8 years, 100% more threads, and a 128.6% more advanced lithography process.

The Pentium Gold G6405T is our recommended choice as it beats the Pentium G645T in performance tests.


Should you still have questions on choice between Pentium G645T and Pentium Gold G6405T, ask them in Comments section, and we shall answer.

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Intel Pentium G645T
Pentium G645T
Intel Pentium Gold G6405T
Pentium Gold G6405T

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Community ratings

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Questions & comments

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