Product comparison · 2 cpus

HP Intel Xeon X5550, FI, Ref vs HP Intel Xeon X5660, FI, Ref

37specifications compared
9differ
28identical
7known for one product only

Key differences

The HP Intel Xeon X5660, FI, Ref has 0.14 GHz more processor base frequency than the HP Intel Xeon X5550, FI, Ref (2.8 GHz vs 2.66 GHz). The HP Intel Xeon X5660, FI, Ref has 2 more processor cores than the HP Intel Xeon X5550, FI, Ref (6 vs 4). The HP Intel Xeon X5550, FI, Ref has 13 nm more processor lithography than the HP Intel Xeon X5660, FI, Ref (45 nm vs 32 nm). Processor model: X5550 on the HP Intel Xeon X5550, FI, Ref, X5660 on the HP Intel Xeon X5660, FI, Ref.

Processor model
- Intel Xeon X5550, FI, Ref:X5550
- Intel Xeon X5660, FI, Ref:X5660
Processor base frequency
- Intel Xeon X5550, FI, Ref:2.66 GHz
- Intel Xeon X5660, FI, Ref:2.8 GHz
Processor cores
- Intel Xeon X5550, FI, Ref:4
- Intel Xeon X5660, FI, Ref:6
Processor lithography
- Intel Xeon X5550, FI, Ref:45 nm
- Intel Xeon X5660, FI, Ref:32 nm
Processor threads
- Intel Xeon X5550, FI, Ref:8
- Intel Xeon X5660, FI, Ref:12
Processor boost frequency
- Intel Xeon X5550, FI, Ref:3.06 GHz
- Intel Xeon X5660, FI, Ref:3.2 GHz
Processor cache
- Intel Xeon X5550, FI, Ref:8 MB
- Intel Xeon X5660, FI, Ref:12 MB
Maximum internal memory supported by processor
- Intel Xeon X5550, FI, Ref:144 GB
- Intel Xeon X5660, FI, Ref:288 GB

Side by side

Differences highlightedShow differences only

Comparison of Intel Xeon X5550, FI, Ref, Intel Xeon X5660, FI, Ref
44 specifications	A HP Intel Xeon X5550, FI, Ref View product	B HP Intel Xeon X5660, FI, Ref View product
Processor7 differ
Processor family	Intel® Xeon® 5000 Sequence	Intel® Xeon® 5000 Sequence
Processor modelDiffers	X5550	X5660
Processor base frequencyDiffers	2.66 GHz	2.8 GHz
Processor coresDiffers	4	6
Processor socket	Socket B (LGA 1366)	Socket B (LGA 1366)
Processor lithographyDiffers	45 nm	32 nm
Component for	Server/workstation	Server/workstation
Processor threadsDiffers	8	12
System bus rate	6.4 GT/s	6.4 GT/s
Processor operating modes	32-bit, 64-bit	32-bit, 64-bit
Processor boost frequencyDiffers	3.06 GHz	3.2 GHz
Processor cacheDiffers	8 MB	12 MB
Processor cache type	L3	L3
Thermal Design Power (TDP)	95 W	95 W
VID Voltage Range	0.75 - 1.35 V	0.75 - 1.35 V
Bus type	QPI	QPI
Number of QPI links	2	2
Memory bandwidth supported by processor (max)	32 GB/s	32 GB/s
Memory1 differ
Maximum internal memory supported by processorDiffers	144 GB	288 GB
Memory types supported by processor	DDR3-SDRAM	DDR3-SDRAM
Memory clock speeds supported by processor	800,1066,1333 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
Market segment	Server	Server
Number of Processing Die TransistorsKnown for one	731 M	Unknown — not stated by the source
Processing Die sizeKnown for one	263 mm²	Unknown — not stated by the source
CPU configuration (max)Known for one	2	Unknown — not stated by the source
Physical Address Extension (PAE)Known for one	Yes	Unknown — not stated by the source
Supported instruction setsKnown for one	Unknown — not stated by the source	SSE4.2
Processor special featuresidentical
Enhanced Intel SpeedStep Technology	Yes	Yes
Intel® Hyper Threading Technology (Intel® HT Technology)	Yes	Yes
Intel® Smart Cache	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
Intel Trusted Execution TechnologyKnown for one	Unknown — not stated by the source	Yes
Intel® AES New Instructions (Intel® AES-NI)Known for one	Unknown — not stated by the source	Yes
Operational conditions1 differ
TcaseDiffers	75 °C	81.3 °C
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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