Product comparison · 2 cpus

HP Z620 Xeon E5-2665 8C 2.40GHz 20MB vs HP Z820 Xeon E5-2603 4 Core 1.80GHz 10MB cache 1066MHz 2nd CPU

Key differences

Processor model
- Z620 Xeon E5-2665 8C 2.40GHz 20MB:E5-2665
- Z820 Xeon E5-2603 4 Core 1.80GHz 10MB cache 1066MHz 2nd CPU:E5-2603
Processor base frequency
- Z620 Xeon E5-2665 8C 2.40GHz 20MB:2.4 GHz
- Z820 Xeon E5-2603 4 Core 1.80GHz 10MB cache 1066MHz 2nd CPU:1.8 GHz
Processor cores
- Z620 Xeon E5-2665 8C 2.40GHz 20MB:8
- Z820 Xeon E5-2603 4 Core 1.80GHz 10MB cache 1066MHz 2nd CPU:4
Processor threads
- Z620 Xeon E5-2665 8C 2.40GHz 20MB:16
- Z820 Xeon E5-2603 4 Core 1.80GHz 10MB cache 1066MHz 2nd CPU:4
System bus rate
- Z620 Xeon E5-2665 8C 2.40GHz 20MB:8 GT/s
- Z820 Xeon E5-2603 4 Core 1.80GHz 10MB cache 1066MHz 2nd CPU:6.4 GT/s
Processor cache
- Z620 Xeon E5-2665 8C 2.40GHz 20MB:20 MB
- Z820 Xeon E5-2603 4 Core 1.80GHz 10MB cache 1066MHz 2nd CPU:10 MB
Processor cache type
- Z620 Xeon E5-2665 8C 2.40GHz 20MB:L3
- Z820 Xeon E5-2603 4 Core 1.80GHz 10MB cache 1066MHz 2nd CPU:L2
Processor front side bus
- Z620 Xeon E5-2665 8C 2.40GHz 20MB:1600 MHz
- Z820 Xeon E5-2603 4 Core 1.80GHz 10MB cache 1066MHz 2nd CPU:1066 MHz

Differences highlightedShow differences only

Comparison of Z620 Xeon E5-2665 8C 2.40GHz 20MB, Z820 Xeon E5-2603 4 Core 1.80GHz 10MB cache 1066MHz 2nd CPU
49 specifications	A HP Z620 Xeon E5-2665 8C 2.40GHz 20MB View product	B HP Z820 Xeon E5-2603 4 Core 1.80GHz 10MB cache 1066MHz 2nd CPU View product
Processor11 differ
Processor modelDiffers	E5-2665	E5-2603
Processor base frequencyDiffers	2.4 GHz	1.8 GHz
Processor coresDiffers	8	4
Processor threadsDiffers	16	4
System bus rateDiffers	8 GT/s	6.4 GT/s
Processor boost frequencyKnown for one	3.1 GHz	Unknown — not stated by the source
Processor cacheDiffers	20 MB	10 MB
Processor cache typeDiffers	L3	L2
Processor front side busDiffers	1600 MHz	1066 MHz
Thermal Design Power (TDP)Differs	115 W	80 W
CPU multiplier (bus/core ratio)Differs	31	18
Memory bandwidth supported by processor (max)Differs	51.2 GB/s	34.1 GB/s
Memory1 differ
Memory clock speeds supported by processorDiffers	800,1066,1333,1600 MHz	800,1066 MHz
Processor special features2 differ
Intel® Hyper Threading Technology (Intel® HT Technology)Differs	Yes	No
Intel® Turbo Boost TechnologyDiffers	Yes	No
Operational conditions1 differ
TcaseDiffers	81.8 °C	70 °C
Other features1 differ
CompatibilityDiffers	HP Z620	HP Z820

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.