Product comparison · 2 cpus

HP Z620 Xeon E5-2640 6 Core 2.50GHz 15MB cache 1333MHz 2nd CPU vs HP Z820 Xeon E5-2670 8 Core 2.60GHz 20MB cache 1600MHz 2nd CPU

Key differences

Processor model
- Z620 Xeon E5-2640 6 Core 2.50GHz 15MB cache 1333MHz 2nd CPU:E5-2640
- Z820 Xeon E5-2670 8 Core 2.60GHz 20MB cache 1600MHz 2nd CPU:E5-2670
Processor base frequency
- Z620 Xeon E5-2640 6 Core 2.50GHz 15MB cache 1333MHz 2nd CPU:2.5 GHz
- Z820 Xeon E5-2670 8 Core 2.60GHz 20MB cache 1600MHz 2nd CPU:2.6 GHz
Processor cores
- Z620 Xeon E5-2640 6 Core 2.50GHz 15MB cache 1333MHz 2nd CPU:6
- Z820 Xeon E5-2670 8 Core 2.60GHz 20MB cache 1600MHz 2nd CPU:8
Processor threads
- Z620 Xeon E5-2640 6 Core 2.50GHz 15MB cache 1333MHz 2nd CPU:12
- Z820 Xeon E5-2670 8 Core 2.60GHz 20MB cache 1600MHz 2nd CPU:16
System bus rate
- Z620 Xeon E5-2640 6 Core 2.50GHz 15MB cache 1333MHz 2nd CPU:7.2 GT/s
- Z820 Xeon E5-2670 8 Core 2.60GHz 20MB cache 1600MHz 2nd CPU:8 GT/s
Processor boost frequency
- Z620 Xeon E5-2640 6 Core 2.50GHz 15MB cache 1333MHz 2nd CPU:3 GHz
- Z820 Xeon E5-2670 8 Core 2.60GHz 20MB cache 1600MHz 2nd CPU:3.3 GHz
Processor cache
- Z620 Xeon E5-2640 6 Core 2.50GHz 15MB cache 1333MHz 2nd CPU:15 MB
- Z820 Xeon E5-2670 8 Core 2.60GHz 20MB cache 1600MHz 2nd CPU:20 MB
Processor front side bus
- Z620 Xeon E5-2640 6 Core 2.50GHz 15MB cache 1333MHz 2nd CPU:1333 MHz
- Z820 Xeon E5-2670 8 Core 2.60GHz 20MB cache 1600MHz 2nd CPU:1600 MHz

Differences highlightedShow differences only

Comparison of Z620 Xeon E5-2640 6 Core 2.50GHz 15MB cache 1333MHz 2nd CPU, Z820 Xeon E5-2670 8 Core 2.60GHz 20MB cache 1600MHz 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 E5-2670 8 Core 2.60GHz 20MB cache 1600MHz 2nd CPU View product
Processor11 differ
Processor modelDiffers	E5-2640	E5-2670
Processor base frequencyDiffers	2.5 GHz	2.6 GHz
Processor coresDiffers	6	8
Processor threadsDiffers	12	16
System bus rateDiffers	7.2 GT/s	8 GT/s
Processor boost frequencyDiffers	3 GHz	3.3 GHz
Processor cacheDiffers	15 MB	20 MB
Processor front side busDiffers	1333 MHz	1600 MHz
Thermal Design Power (TDP)Differs	95 W	115 W
CPU multiplier (bus/core ratio)Differs	30	33
Memory bandwidth supported by processor (max)Differs	42.6 GB/s	51.2 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	800,1066,1333,1600 MHz
Featuresidentical
Maximum number of PCI Express lanesKnown for one	40	Unknown — not stated by the source
Operational conditions1 differ
TcaseDiffers	73 °C	81.8 °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.