Product comparison · 2 cpus

HP Intel Core i7-3940XM vs HP Intel Pentium G645

47specifications compared
29differ
18identical
21known for one product only

Key differences

Processor model
- Intel Core i7-3940XM:i7-3940XM
- Intel Pentium G645:G645
Processor base frequency
- Intel Core i7-3940XM:3 GHz
- Intel Pentium G645:2.9 GHz
Processor cores
- Intel Core i7-3940XM:4
- Intel Pentium G645:2
Processor socket
- Intel Core i7-3940XM:PGA988
- Intel Pentium G645:LGA 1155 (Socket H2)
Processor lithography
- Intel Core i7-3940XM:22 nm
- Intel Pentium G645:32 nm
Component for
- Intel Core i7-3940XM:Laptop
- Intel Pentium G645:PC
Processor threads
- Intel Core i7-3940XM:8
- Intel Pentium G645:2
Processor cache
- Intel Core i7-3940XM:8 MB
- Intel Pentium G645:3 MB

Side by side

Differences highlightedShow differences only

Comparison of Intel Core i7-3940XM, Intel Pentium G645
68 specifications	A HP Intel Core i7-3940XM View product	B HP Intel Pentium G645 View product
Processor13 differ
Processor manufacturerKnown for one	Intel	Unknown — not stated by the source
Processor familyDiffers	Intel® Core™ i7 X-series Extreme Edition	Intel Pentium G
Processor generationKnown for one	3rd gen Intel® Core™ i7	Unknown — not stated by the source
Processor modelDiffers	i7-3940XM	G645
Processor base frequencyDiffers	3 GHz	2.9 GHz
Processor coresDiffers	4	2
Processor socketDiffers	PGA988	LGA 1155 (Socket H2)
Processor lithographyDiffers	22 nm	32 nm
Component forDiffers	Laptop	PC
Processor threadsDiffers	8	2
Processor boost frequencyKnown for one	3.9 GHz	Unknown — not stated by the source
Processor cacheDiffers	8 MB	3 MB
Thermal Design Power (TDP)Differs	55 W	65 W
SteppingDiffers	E1	Q0
Bus typeKnown for one	DMI	Unknown — not stated by the source
CPU multiplier (bus/core ratio)Differs	30	29
Memory bandwidth supported by processor (max)Differs	25.6 GB/s	17 GB/s
Package typeKnown for one	Unknown — not stated by the source	Tray
Compatible chipsetsKnown for one	Unknown — not stated by the source	Intel® B65 Express, Intel® B75 Express, Intel® H61 Express, Intel® H67 Express, Intel® H77 Express, Intel® P67 Express, Intel® Q65 Express, Intel® Q67 Express, Intel Q75 Express, Intel® Z68 Express, Intel® Z75 Express, Intel® Z77 Express
Memory1 differ
Memory clock speeds supported by processorDiffers	1333,1600 MHz	1066 MHz
ECCKnown for one	No	Unknown — not stated by the source
Graphics3 differ
On-board graphics card modelDiffers	Intel® HD Graphics 4000	Intel® HD Graphics
On-board graphics card base frequencyDiffers	650 MHz	850 MHz
On-board graphics card dynamic frequency (max)Differs	1350 MHz	1100 MHz
Number of displays supported (on-board graphics)Known for one	Unknown — not stated by the source	2
Features2 differ
Integrated 4G WiMAXKnown for one	Yes	Unknown — not stated by the source
Market segmentDiffers	Mobile	Desktop
PCI Express slots versionKnown for one	3.0	Unknown — not stated by the source
PCI Express configurationsKnown for one	1x8, 1x16, 2x4, 2x8	Unknown — not stated by the source
Supported instruction setsDiffers	AVX	SSE4.1, SSE4.2
Graphics & IMC lithographyKnown for one	22 nm	Unknown — not stated by the source
Execute Disable BitKnown for one	Unknown — not stated by the source	Yes
Embedded options availableKnown for one	Unknown — not stated by the source	No
Processor special features10 differ
Intel Trusted Execution TechnologyDiffers	Yes	No
Intel® AES New Instructions (Intel® AES-NI)Differs	Yes	No
Intel® Anti-Theft Technology (Intel® AT)Differs	Yes	No
Intel® Clear Video HD Technology (Intel® CVT HD)Differs	Yes	No
Intel® Hyper Threading Technology (Intel® HT Technology)Known for one	Yes	Unknown — not stated by the source
Intel® InTru™ 3D TechnologyDiffers	Yes	No
Intel® Insider™Differs	Yes	No
Intel® My WiFi Technology (Intel® MWT)Known for one	Yes	Unknown — not stated by the source
Intel® Quick Sync Video TechnologyDiffers	Yes	No
Intel® Turbo Boost TechnologyDiffers	2.0	No
Intel® Wireless Display (Intel® WiDi)Differs	Yes	No
Intel Virtualization Technology (VT-x)Known for one	Yes	Unknown — not stated by the source
Intel Virtualization Technology for Directed I/O (VT-d)Known for one	Yes	Unknown — not stated by the source
Intel® vPro™ Platform EligibilityDiffers	Yes	No
Operational conditionsidentical
TjunctionKnown for one	105 °C	Unknown — not stated by the source
TcaseKnown for one	Unknown — not stated by the source	69.1 °C
Other featuresidentical
Intel® Virtualization Technology (Intel® VT)Known for one	VT-d, VT-x	Unknown — not stated by the source

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.

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