Product comparison · 2 cpus

HP Intel Xeon E5645, Ref vs HP Intel Xeon L5530

39specifications compared
16differ
23identical
7known for one product only

Key differences

The HP Intel Xeon E5645, Ref has 2 more processor cores than the HP Intel Xeon L5530 (6 vs 4). The HP Intel Xeon L5530 has 13 nm more processor lithography than the HP Intel Xeon E5645, Ref (45 nm vs 32 nm). The HP Intel Xeon E5645, Ref has 4 more processor threads than the HP Intel Xeon L5530 (12 vs 8). Only the HP Intel Xeon E5645, Ref has embedded options available. Only the HP Intel Xeon E5645, Ref has Intel Trusted Execution Technology.

Processor model
- Intel Xeon E5645, Ref:E5645
- Intel Xeon L5530:L5530
Processor cores
- Intel Xeon E5645, Ref:6
- Intel Xeon L5530:4
Processor lithography
- Intel Xeon E5645, Ref:32 nm
- Intel Xeon L5530:45 nm
Processor threads
- Intel Xeon E5645, Ref:12
- Intel Xeon L5530:8
Processor operating modes
- Intel Xeon E5645, Ref:32-bit, 64-bit
- Intel Xeon L5530:64-bit
Processor boost frequency
- Intel Xeon E5645, Ref:2.67 GHz
- Intel Xeon L5530:2.66 GHz
Processor cache
- Intel Xeon E5645, Ref:12 MB
- Intel Xeon L5530:8 MB
Thermal Design Power (TDP)
- Intel Xeon E5645, Ref:80 W
- Intel Xeon L5530:60 W

Side by side

Differences highlightedShow differences only

Comparison of Intel Xeon E5645, Ref, Intel Xeon L5530
46 specifications	A HP Intel Xeon E5645, Ref View product	B HP Intel Xeon L5530 View product
Processor10 differ
Processor family	Intel® Xeon® 5000 Sequence	Intel® Xeon® 5000 Sequence
Processor modelDiffers	E5645	L5530
Processor base frequency	2.4 GHz	2.4 GHz
Processor coresDiffers	6	4
Processor socket	Socket B (LGA 1366)	Socket B (LGA 1366)
Processor lithographyDiffers	32 nm	45 nm
Component for	Server/workstation	Server/workstation
Processor threadsDiffers	12	8
System bus rate	5.86 GT/s	5.86 GT/s
Processor operating modesDiffers	32-bit, 64-bit	64-bit
Processor boost frequencyDiffers	2.67 GHz	2.66 GHz
Processor cacheDiffers	12 MB	8 MB
Processor cache type	L3	L3
Thermal Design Power (TDP)Differs	80 W	60 W
VID Voltage RangeDiffers	0.750 - 1.350 V	0.75 - 1.35 V
SteppingKnown for one	B1	Unknown — not stated by the source
Bus type	QPI	QPI
Number of QPI links	2	2
Memory bandwidth supported by processor (max)Differs	32 GB/s	25.6 GB/s
Memory2 differ
Maximum internal memory supported by processorDiffers	288 GB	144 GB
Memory types supported by processor	DDR3-SDRAM	DDR3-SDRAM
Memory clock speeds supported by processorDiffers	800,1066,1333 MHz	800,1066 MHz
Memory channels	Triple-channel	Triple-channel
ECC	Yes	Yes
Graphicsidentical
On-board graphics card	No	No
Features1 differ
Execute Disable Bit	Yes	Yes
Idle States	Yes	Yes
Thermal Monitoring TechnologiesKnown for one	No	Unknown — not stated by the source
Market segment	Server	Server
Supported instruction setsKnown for one	SSE4.2	Unknown — not stated by the source
Embedded options availableDiffers	Yes	No
Number of Processing Die TransistorsKnown for one	Unknown — not stated by the source	731 M
Processing Die sizeKnown for one	Unknown — not stated by the source	263 mm²
Processor special features2 differ
Enhanced Intel SpeedStep Technology	Yes	Yes
Intel Trusted Execution TechnologyDiffers	Yes	No
Intel® AES New Instructions (Intel® AES-NI)Differs	Yes	No
Intel® Hyper Threading Technology (Intel® HT Technology)	Yes	Yes
Intel® Turbo Boost Technology	Yes	Yes
Intel Demand Based Switching	Yes	Yes
Intel VT-x with Extended Page Tables (EPT)	Yes	Yes
Intel Virtualization Technology (VT-x)	Yes	Yes
Intel Virtualization Technology for Directed I/O (VT-d)	Yes	Yes
Operational conditions1 differ
TcaseDiffers	76.2 °C	70 °C
Technical detailsidentical
Compliance certificatesKnown for one	RoHS	Unknown — not stated by the source
Other featuresidentical
Intel® Virtualization Technology (Intel® VT)	VT-d, VT-x	VT-d, VT-x
CompatibilityKnown for one	Unknown — not stated by the source	HP BL490C G6

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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