Product comparison · 2 cpus

HP Intel Pentium D 840 vs HP Intel Pentium D 940

26specifications compared
6differ
20identical
14known for one product only

Key differences

Processor family
- Intel Pentium D 840:Intel® Celeron® D
- Intel Pentium D 940:Intel® Pentium® D
Processor model
- Intel Pentium D 840:840
- Intel Pentium D 940:940
Processor lithography
- Intel Pentium D 840:90 nm
- Intel Pentium D 940:65 nm
Processor cache
- Intel Pentium D 840:2 MB
- Intel Pentium D 940:4 MB
Processor cache type
- Intel Pentium D 840:L3
- Intel Pentium D 940:L2
VID Voltage Range
- Intel Pentium D 840:1.200 - 1.400 V
- Intel Pentium D 940:1.2 - 1.3375 V

Side by side

Differences highlightedShow differences only

Comparison of Intel Pentium D 840, Intel Pentium D 940
40 specifications	A HP Intel Pentium D 840 View product	B HP Intel Pentium D 940 View product
Processor6 differ
Processor familyDiffers	Intel® Celeron® D	Intel® Pentium® D
Processor modelDiffers	840	940
Processor base frequency	3.2 GHz	3.2 GHz
Processor cores	2	2
Processor socket	LGA 775 (Socket T)	LGA 775 (Socket T)
Processor lithographyDiffers	90 nm	65 nm
Component forKnown for one	Unknown — not stated by the source	Server/workstation
Processor seriesKnown for one	Unknown — not stated by the source	Intel Pentium D 900 Series
Processor operating modes	64-bit	64-bit
Processor cacheDiffers	2 MB	4 MB
Processor cache typeDiffers	L3	L2
Processor front side bus	800 MHz	800 MHz
Thermal Design Power (TDP)	130 W	130 W
VID Voltage RangeDiffers	1.200 - 1.400 V	1.2 - 1.3375 V
FSB Parity	No	No
Memoryidentical
ECC	No	No
Graphicsidentical
On-board graphics card	No	No
Featuresidentical
Execute Disable Bit	Yes	Yes
Idle States	Yes	Yes
Thermal Monitoring Technologies	No	No
Market segmentKnown for one	Unknown — not stated by the source	Desktop
Number of Graphics & IMC Die TransistorsKnown for one	Unknown — not stated by the source	376 M
Graphics & IMC Die SizeKnown for one	Unknown — not stated by the source	162 mm²
Embedded options available	No	No
Physical Address Extension (PAE)	Yes	Yes
Number of Processing Die TransistorsKnown for one	230 M	Unknown — not stated by the source
Processing Die sizeKnown for one	206 mm²	Unknown — not stated by the source
Processor special featuresidentical
Enhanced Intel SpeedStep Technology	Yes	Yes
Intel Trusted Execution Technology	No	No
Intel® AES New Instructions (Intel® AES-NI)	No	No
Intel® Hyper Threading Technology (Intel® HT Technology)	No	No
Intel® Turbo Boost Technology	No	No
Intel 64Known for one	Unknown — not stated by the source	Yes
Intel Demand Based Switching	No	No
Intel Virtualization Technology (VT-x)Known for one	Unknown — not stated by the source	Yes
Intel Virtualization Technology for Directed I/O (VT-d)Known for one	Unknown — not stated by the source	No
Other featuresidentical
CompatibilityKnown for one	Unknown — not stated by the source	ProLiant DL320 G4
Intel® Virtualization Technology (Intel® VT)Known for one	No	Unknown — not stated by the source
Operational conditionsidentical
TcaseKnown for one	69.8 °C	Unknown — not stated by the source
Weight & dimensionsidentical
Processor package sizeKnown for one	37.5 mm	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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