Product comparison · 2 cpus

HP Intel Pentium D 820 vs HP Intel Xeon X5650 2.66GHz

22specifications compared
17differ
5identical
26known for one product only

Key differences

Processor family
- Intel Pentium D 820:Intel® Pentium® D
- Intel Xeon X5650 2.66GHz:Intel® Xeon® 5000 Sequence
Processor model
- Intel Pentium D 820:820
- Intel Xeon X5650 2.66GHz:X5650
Processor base frequency
- Intel Pentium D 820:2.8 GHz
- Intel Xeon X5650 2.66GHz:2.66 GHz
Processor cores
- Intel Pentium D 820:2
- Intel Xeon X5650 2.66GHz:6
Processor socket
- Intel Pentium D 820:LGA 775 (Socket T)
- Intel Xeon X5650 2.66GHz:Socket B (LGA 1366)
Processor lithography
- Intel Pentium D 820:90 nm
- Intel Xeon X5650 2.66GHz:32 nm
Processor cache
- Intel Pentium D 820:2 MB
- Intel Xeon X5650 2.66GHz:12 MB
Processor cache type
- Intel Pentium D 820:L2
- Intel Xeon X5650 2.66GHz:L3

Side by side

Differences highlightedShow differences only

Comparison of Intel Pentium D 820, Intel Xeon X5650 2.66GHz
48 specifications	A HP Intel Pentium D 820 View product	B HP Intel Xeon X5650 2.66GHz View product
Processor8 differ
Processor familyDiffers	Intel® Pentium® D	Intel® Xeon® 5000 Sequence
Processor modelDiffers	820	X5650
Processor base frequencyDiffers	2.8 GHz	2.66 GHz
Processor coresDiffers	2	6
Processor socketDiffers	LGA 775 (Socket T)	Socket B (LGA 1366)
Processor lithographyDiffers	90 nm	32 nm
Component forKnown for one	Unknown — not stated by the source	Server/workstation
Processor threadsKnown for one	Unknown — not stated by the source	12
System bus rateKnown for one	Unknown — not stated by the source	6.4 GT/s
Processor operating modes	64-bit	64-bit
Processor cacheDiffers	2 MB	12 MB
Processor cache typeDiffers	L2	L3
Thermal Design Power (TDP)	95 W	95 W
VID Voltage RangeKnown for one	Unknown — not stated by the source	0.750 - 1.350 V
SteppingKnown for one	Unknown — not stated by the source	B1
Bus typeKnown for one	Unknown — not stated by the source	QPI
Number of QPI linksKnown for one	Unknown — not stated by the source	2
Memory bandwidth supported by processor (max)Known for one	Unknown — not stated by the source	32 GB/s
Package typeKnown for one	Tray	Unknown — not stated by the source
Processor front side busKnown for one	800 MHz	Unknown — not stated by the source
FSB ParityKnown for one	No	Unknown — not stated by the source
Memory1 differ
Maximum internal memory supported by processorKnown for one	Unknown — not stated by the source	288 GB
Memory types supported by processorKnown for one	Unknown — not stated by the source	DDR3-SDRAM
Memory clock speeds supported by processorKnown for one	Unknown — not stated by the source	800,1066,1333 MHz
Memory channelsKnown for one	Unknown — not stated by the source	Triple-channel
ECCDiffers	No	Yes
Graphicsidentical
On-board graphics cardKnown for one	Unknown — not stated by the source	No
Featuresidentical
Execute Disable Bit	Yes	Yes
Idle States	Yes	Yes
Market segmentKnown for one	Unknown — not stated by the source	Server
Supported instruction setsKnown for one	Unknown — not stated by the source	SSE4.2
CPU configuration (max)Known for one	Unknown — not stated by the source	2
Physical Address Extension (PAE)Known for one	Unknown — not stated by the source	Yes
Thermal Monitoring TechnologiesKnown for one	No	Unknown — not stated by the source
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
Embedded options availableKnown for one	No	Unknown — not stated by the source
Processor special features6 differ
Enhanced Intel SpeedStep TechnologyDiffers	No	Yes
Intel Trusted Execution TechnologyDiffers	No	Yes
Intel® AES New Instructions (Intel® AES-NI)Differs	No	Yes
Intel® Hyper Threading Technology (Intel® HT Technology)Differs	No	Yes
Intel® Turbo Boost TechnologyDiffers	No	Yes
Intel Demand Based SwitchingDiffers	No	Yes
Intel VT-x with Extended Page Tables (EPT)Known for one	Unknown — not stated by the source	Yes
Intel Virtualization Technology (VT-x)	Yes	Yes
Intel Virtualization Technology for Directed I/O (VT-d)Known for one	Unknown — not stated by the source	Yes
Operational conditions1 differ
TcaseDiffers	64.1 °C	81.3 °C
Other features1 differ
Intel® Virtualization Technology (Intel® VT)Differs	VT-x	VT-d, VT-x

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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