Product comparison · 2 cpus

Dell Xeon L5609 vs Dell Xeon X5550

42specifications compared
17differ
25identical
8known for one product only

Key differences

Processor model
- Xeon L5609:L5609
- Xeon X5550:X5550
Processor base frequency
- Xeon L5609:1.86 GHz
- Xeon X5550:2.66 GHz
Processor lithography
- Xeon L5609:32 nm
- Xeon X5550:45 nm
Processor threads
- Xeon L5609:4
- Xeon X5550:8
System bus rate
- Xeon L5609:4.8 GT/s
- Xeon X5550:6.4 GT/s
Processor cache
- Xeon L5609:12 MB
- Xeon X5550:8 MB
Thermal Design Power (TDP)
- Xeon L5609:40 W
- Xeon X5550:95 W
VID Voltage Range
- Xeon L5609:0.750 - 1.350 V
- Xeon X5550:0.75 - 1.35 V

Side by side

Differences highlightedShow differences only

Comparison of Xeon L5609, Xeon X5550
50 specifications	A Dell Xeon L5609 View product	B Dell Xeon X5550 View product
Processor11 differ
Processor family	Intel® Xeon® 5000 Sequence	Intel® Xeon® 5000 Sequence
Processor modelDiffers	L5609	X5550
Processor base frequencyDiffers	1.86 GHz	2.66 GHz
Processor cores	4	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	4	8
System bus rateDiffers	4.8 GT/s	6.4 GT/s
Processor operating modes	64-bit	64-bit
Processor cacheDiffers	12 MB	8 MB
Processor cache type	L3	L3
Thermal Design Power (TDP)Differs	40 W	95 W
VID Voltage RangeDiffers	0.750 - 1.350 V	0.75 - 1.35 V
SteppingDiffers	B1	D0
Bus type	QPI	QPI
CPU multiplier (bus/core ratio)Differs	14	20
Number of QPI links	2	2
Memory bandwidth supported by processor (max)Differs	25.6 GB/s	32 GB/s
Processor boost frequencyKnown for one	Unknown — not stated by the source	3.06 GHz
L3 cache speedKnown for one	Unknown — not stated by the source	2.66 GHz
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 MHz	800,1066,1333 MHz
Memory channels	Triple-channel	Triple-channel
ECC	Yes	Yes
Graphicsidentical
On-board graphics card	No	No
Featuresidentical
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
CPU configuration (max)Known for one	2	Unknown — not stated by the source
Embedded options available	No	No
Physical Address Extension (PAE)	Yes	Yes
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 features3 differ
Enhanced Intel SpeedStep Technology	Yes	Yes
Intel Trusted Execution TechnologyDiffers	Yes	No
Intel® AES New Instructions (Intel® AES-NI)Known for one	Yes	Unknown — not stated by the source
Intel® Hyper Threading Technology (Intel® HT Technology)Differs	No	Yes
Intel® Smart Cache	Yes	Yes
Intel® Turbo Boost TechnologyDiffers	No	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	63.1 °C	75 °C
Weight & dimensionsidentical
Processor package size	42.5 mm	42.5 mm
Other featuresidentical
Intel® Virtualization Technology (Intel® VT)	VT-d, 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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