Pentium Gold G6405 vs i7-2640M

Place in the ranking	2126	1721
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Desktop processor
Series	Intel Core i7	no data
Power efficiency	4.19	4.36
Architecture codename	Sandy Bridge (2011−2013)	Comet Lake-R (2021)
Release date	4 September 2011 (13 years ago)	16 March 2021 (3 years ago)
Launch price (MSRP)	$346	$64

Detailed specifications

Core i7-2640M and Pentium Gold G6405 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	2 (Dual-core)	2 (Dual-core)
Threads	4	4
Base clock speed	2.8 GHz	4.1 GHz
Boost clock speed	3.5 GHz	4.1 GHz
Bus type	DMI 2.0	no data
Bus rate	4 × 5 GT/s	8 GT/s
Multiplier	28	no data
L1 cache	128 KB	64 KB (per core)
L2 cache	512 KB	256 KB (per core)
L3 cache	4 MB	4 MB (shared)
Chip lithography	32 nm	14 nm
Die size	149 mm²	no data
Maximum core temperature	100 °C	no data
Maximum case temperature (TCase)	no data	72 °C
Number of transistors	624 Million	no data
64 bit support	+	+
Windows 11 compatibility	-	+

Compatibility

Information on Core i7-2640M and Pentium Gold G6405 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 (Uniprocessor)	1
Socket	FCBGA1023,PPGA988	1200
Power consumption (TDP)	35 Watt	15 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-2640M and Pentium Gold G6405. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® AVX	no data
AES-NI	+	+
FMA	+	-
AVX	+	+
vPro	+	no data
Enhanced SpeedStep (EIST)	+	+
My WiFi	+	no data
Turbo Boost Technology	2.0	no data
Hyper-Threading Technology	+	no data
TSX	-	+
Idle States	+	no data
Thermal Monitoring	+	-
Flex Memory Access	+	no data
Demand Based Switching	-	no data
FDI	+	no data
Fast Memory Access	+	no data

Security technologies

Core i7-2640M and Pentium Gold G6405 technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	+
EDB	+	no data
Identity Protection	+	-
Anti-Theft	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-2640M and Pentium Gold G6405 are enumerated here.

AMD-V	+	-
VT-d	+	+
VT-x	+	+
EPT	+	no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-2640M and Pentium Gold G6405. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR4-2666
Maximum memory size	16 GB	no data
Max memory channels	2	no data
Maximum memory bandwidth	228.707 GB/s	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card Compare	Intel HD Graphics 3000	Intel UHD Graphics 610
Quick Sync Video	+	-
Clear Video HD	+	no data
Graphics max frequency	1.3 GHz	no data
InTru 3D	+	no data

Graphics interfaces

Available interfaces and connections of Core i7-2640M and Pentium Gold G6405 integrated GPUs.

Number of displays supported	2	no data
eDP	+	no data
DisplayPort	+	-
HDMI	+	-
SDVO	+	no data
CRT	+	no data

Peripherals

Specifications and connection of peripherals supported by Core i7-2640M and Pentium Gold G6405.

PCIe version	2.0	3.0
PCI Express lanes	16	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.

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.

i7-2640M 1.55

Pentium Gold G6405 2.67
+72.3%

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.

i7-2640M 2467

Pentium Gold G6405 4244
+72%

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.

i7-2640M 516

Pentium Gold G6405 845
+63.8%

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.

i7-2640M 1021

Pentium Gold G6405 1725
+69%

Gaming performance

Pros & cons summary

Performance score	1.55	2.67
Integrated graphics card	0.66	1.89
Recency	4 September 2011	16 March 2021
Chip lithography	32 nm	14 nm
Power consumption (TDP)	35 Watt	15 Watt

Pentium Gold G6405 has a 72.3% higher aggregate performance score, 186.4% faster integrated GPU, an age advantage of 9 years, a 128.6% more advanced lithography process, and 133.3% lower power consumption.

The Pentium Gold G6405 is our recommended choice as it beats the Core i7-2640M in performance tests.

Be aware that Core i7-2640M is a notebook processor while Pentium Gold G6405 is a desktop one.

Should you still have questions on choice between Core i7-2640M and Pentium Gold G6405, ask them in Comments section, and we shall answer.