Product comparison · 2 cpus

HP Z620 Xeon E5-2640 6 Core 2.50GHz 15MB cache 1333MHz 2nd CPU vs HP Z820 Xeon E5-2603 4 Core 1.80GHz 10MB cache 1066MHz 2nd CPU

Key differences

Processor model
- Z620 Xeon E5-2640 6 Core 2.50GHz 15MB cache 1333MHz 2nd CPU:E5-2640
- Z820 Xeon E5-2603 4 Core 1.80GHz 10MB cache 1066MHz 2nd CPU:E5-2603
Processor base frequency
- Z620 Xeon E5-2640 6 Core 2.50GHz 15MB cache 1333MHz 2nd CPU:2.5 GHz
- Z820 Xeon E5-2603 4 Core 1.80GHz 10MB cache 1066MHz 2nd CPU:1.8 GHz
Processor cores
- Z620 Xeon E5-2640 6 Core 2.50GHz 15MB cache 1333MHz 2nd CPU:6
- Z820 Xeon E5-2603 4 Core 1.80GHz 10MB cache 1066MHz 2nd CPU:4
Processor threads
- Z620 Xeon E5-2640 6 Core 2.50GHz 15MB cache 1333MHz 2nd CPU:12
- Z820 Xeon E5-2603 4 Core 1.80GHz 10MB cache 1066MHz 2nd CPU:4
System bus rate
- Z620 Xeon E5-2640 6 Core 2.50GHz 15MB cache 1333MHz 2nd CPU:7.2 GT/s
- Z820 Xeon E5-2603 4 Core 1.80GHz 10MB cache 1066MHz 2nd CPU:6.4 GT/s
Processor cache
- Z620 Xeon E5-2640 6 Core 2.50GHz 15MB cache 1333MHz 2nd CPU:15 MB
- Z820 Xeon E5-2603 4 Core 1.80GHz 10MB cache 1066MHz 2nd CPU:10 MB
Processor front side bus
- Z620 Xeon E5-2640 6 Core 2.50GHz 15MB cache 1333MHz 2nd CPU:1333 MHz
- Z820 Xeon E5-2603 4 Core 1.80GHz 10MB cache 1066MHz 2nd CPU:1066 MHz
Thermal Design Power (TDP)
- Z620 Xeon E5-2640 6 Core 2.50GHz 15MB cache 1333MHz 2nd CPU:95 W
- Z820 Xeon E5-2603 4 Core 1.80GHz 10MB cache 1066MHz 2nd CPU:80 W

Differences highlightedShow differences only

Comparison of Z620 Xeon E5-2640 6 Core 2.50GHz 15MB cache 1333MHz 2nd CPU, Z820 Xeon E5-2603 4 Core 1.80GHz 10MB cache 1066MHz 2nd CPU
49 specifications	A HP Z620 Xeon E5-2640 6 Core 2.50GHz 15MB cache 1333MHz 2nd CPU View product	B HP Z820 Xeon E5-2603 4 Core 1.80GHz 10MB cache 1066MHz 2nd CPU View product
Processor10 differ
Processor modelDiffers	E5-2640	E5-2603
Processor base frequencyDiffers	2.5 GHz	1.8 GHz
Processor coresDiffers	6	4
Processor threadsDiffers	12	4
System bus rateDiffers	7.2 GT/s	6.4 GT/s
Processor boost frequencyKnown for one	3 GHz	Unknown — not stated by the source
Processor cacheDiffers	15 MB	10 MB
Processor front side busDiffers	1333 MHz	1066 MHz
Thermal Design Power (TDP)Differs	95 W	80 W
CPU multiplier (bus/core ratio)Differs	30	18
Memory bandwidth supported by processor (max)Differs	42.6 GB/s	34.1 GB/s
Processor cache typeKnown for one	Unknown — not stated by the source	L2
Memory1 differ
Memory clock speeds supported by processorDiffers	800,1066,1333 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	73 °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.