Dell Xeon E5640 vs HP E5640 processor

Comparison of Xeon E5640, E5640

43 specifications	A Dell Xeon E5640View product	B HP E5640 processor Model E5640 View product
Processor1 differ
VID Voltage RangeDiffers	0.75 - 1.35 V	0.750 - 1.350 V
Bus typeKnown for one	QPI	—Unknown — not stated by the source
Number of QPI linksKnown for one	2	—Unknown — not stated by the source
SteppingKnown for one	—Unknown — not stated by the source	B1
CPU multiplier (bus/core ratio)Known for one	—Unknown — not stated by the source	20
Processor codeKnown for one	—Unknown — not stated by the source	SLBVC
Memoryidentical
Memory types supported by processorKnown for one	DDR3-SDRAM	—Unknown — not stated by the source
Graphicsidentical
On-board graphics cardKnown for one	No	—Unknown — not stated by the source
Featuresidentical
Execute Disable BitKnown for one	Yes	—Unknown — not stated by the source
Idle StatesKnown for one	Yes	—Unknown — not stated by the source
Supported instruction setsKnown for one	AES, SSE4.2	—Unknown — not stated by the source
CPU configuration (max)Known for one	2	—Unknown — not stated by the source
BandwidthKnown for one	—Unknown — not stated by the source	26214.4 MB/s
Processor special featuresidentical
Enhanced Intel SpeedStep TechnologyKnown for one	Yes	—Unknown — not stated by the source
Intel Trusted Execution TechnologyKnown for one	Yes	—Unknown — not stated by the source
Intel® Hyper Threading Technology (Intel® HT Technology)Known for one	Yes	—Unknown — not stated by the source
Intel® Turbo Boost TechnologyKnown for one	Yes	—Unknown — not stated by the source
Intel Demand Based SwitchingKnown for one	Yes	—Unknown — not stated by the source
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
Operational conditionsidentical
TcaseKnown for one	77.6 °C	—Unknown — not stated by the source
Maximum operating temperatureKnown for one	—Unknown — not stated by the source	77.6 °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.