Product comparison · 2 cpus

Dell Xeon E5640 vs HP AMD Athlon II X4 645

15specifications compared
13differ
2identical
24known for one product only

Key differences

Processor family
- Xeon E5640:Intel® Xeon® 5000 Sequence
- AMD Athlon II X4 645:AMD Athlon II X4
Processor model
- Xeon E5640:E5640
- AMD Athlon II X4 645:645
Processor base frequency
- Xeon E5640:2.66 GHz
- AMD Athlon II X4 645:3.1 GHz
Processor socket
- Xeon E5640:Socket B (LGA 1366)
- AMD Athlon II X4 645:Socket AM3
Processor lithography
- Xeon E5640:32 nm
- AMD Athlon II X4 645:45 nm
Component for
- Xeon E5640:Server/workstation
- AMD Athlon II X4 645:PC
Processor threads
- Xeon E5640:8
- AMD Athlon II X4 645:4
Processor operating modes
- Xeon E5640:64-bit
- AMD Athlon II X4 645:32-bit, 64-bit

Side by side

Differences highlightedShow differences only

Comparison of Xeon E5640, AMD Athlon II X4 645
39 specifications	A Dell Xeon E5640 View product	B HP AMD Athlon II X4 645 View product
Processor12 differ
Processor familyDiffers	Intel® Xeon® 5000 Sequence	AMD Athlon II X4
Processor modelDiffers	E5640	645
Processor base frequencyDiffers	2.66 GHz	3.1 GHz
Processor cores	4	4
Processor socketDiffers	Socket B (LGA 1366)	Socket AM3
Processor lithographyDiffers	32 nm	45 nm
Component forDiffers	Server/workstation	PC
Processor threadsDiffers	8	4
System bus rateKnown for one	5.86 GT/s	Unknown — not stated by the source
Processor operating modesDiffers	64-bit	32-bit, 64-bit
Processor boost frequencyKnown for one	2.93 GHz	Unknown — not stated by the source
Processor cacheDiffers	12 MB	2 MB
Processor cache typeDiffers	L3	L2
Thermal Design Power (TDP)Differs	80 W	95 W
VID Voltage RangeDiffers	0.75 - 1.35 V	1.05 - 1.4 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
Memory bandwidth supported by processor (max)Known for one	25.6 GB/s	Unknown — not stated by the source
SteppingKnown for one	Unknown — not stated by the source	C3
Memoryidentical
Maximum internal memory supported by processorKnown for one	288 GB	Unknown — not stated by the source
Memory types supported by processorKnown for one	DDR3-SDRAM	Unknown — not stated by the source
Memory clock speeds supported by processorKnown for one	800,1066 MHz	Unknown — not stated by the source
Memory channelsKnown for one	Triple-channel	Unknown — not stated by the source
ECCKnown for one	Yes	Unknown — not stated by the source
Graphicsidentical
On-board graphics card	No	No
Features1 differ
Execute Disable BitKnown for one	Yes	Unknown — not stated by the source
Idle StatesKnown for one	Yes	Unknown — not stated by the source
Market segmentDiffers	Server	Desktop
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
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
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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