Product comparison · 2 cpus

HP Z820 Xeon E5-2603 4 Core 1.80GHz 10MB cache 1066MHz 2nd CPU vs HP Z820 Xeon E5-2643 4 Core 3.30GHz 10MB cache 1600MHz 2nd CPU

47specifications compared
12differ
35identical
2known for one product only

Key differences

The HP Z820 Xeon E5-2643 4 Core 3.30GHz 10MB cache 1600MHz 2nd CPU has 1.5 GHz more processor base frequency than the HP Z820 Xeon E5-2603 4 Core 1.80GHz 10MB cache 1066MHz 2nd CPU (3.3 GHz vs 1.8 GHz). The HP Z820 Xeon E5-2643 4 Core 3.30GHz 10MB cache 1600MHz 2nd CPU has 4 more processor threads than the HP Z820 Xeon E5-2603 4 Core 1.80GHz 10MB cache 1066MHz 2nd CPU (8 vs 4). The HP Z820 Xeon E5-2643 4 Core 3.30GHz 10MB cache 1600MHz 2nd CPU has 1.6 GT/s more system bus rate than the HP Z820 Xeon E5-2603 4 Core 1.80GHz 10MB cache 1066MHz 2nd CPU (8 GT/s vs 6.4 GT/s). Only the HP Z820 Xeon E5-2643 4 Core 3.30GHz 10MB cache 1600MHz 2nd CPU has Intel® Hyper Threading Technology (Intel® HT Technology). Only the HP Z820 Xeon E5-2643 4 Core 3.30GHz 10MB cache 1600MHz 2nd CPU has Intel® Turbo Boost Technology.

Processor model
- Z820 Xeon E5-2603 4 Core 1.80GHz 10MB cache 1066MHz 2nd CPU:E5-2603
- Z820 Xeon E5-2643 4 Core 3.30GHz 10MB cache 1600MHz 2nd CPU:E5-2643
Processor base frequency
- Z820 Xeon E5-2603 4 Core 1.80GHz 10MB cache 1066MHz 2nd CPU:1.8 GHz
- Z820 Xeon E5-2643 4 Core 3.30GHz 10MB cache 1600MHz 2nd CPU:3.3 GHz
Processor threads
- Z820 Xeon E5-2603 4 Core 1.80GHz 10MB cache 1066MHz 2nd CPU:4
- Z820 Xeon E5-2643 4 Core 3.30GHz 10MB cache 1600MHz 2nd CPU:8
System bus rate
- Z820 Xeon E5-2603 4 Core 1.80GHz 10MB cache 1066MHz 2nd CPU:6.4 GT/s
- Z820 Xeon E5-2643 4 Core 3.30GHz 10MB cache 1600MHz 2nd CPU:8 GT/s
Processor front side bus
- Z820 Xeon E5-2603 4 Core 1.80GHz 10MB cache 1066MHz 2nd CPU:1066 MHz
- Z820 Xeon E5-2643 4 Core 3.30GHz 10MB cache 1600MHz 2nd CPU:1600 MHz
Thermal Design Power (TDP)
- Z820 Xeon E5-2603 4 Core 1.80GHz 10MB cache 1066MHz 2nd CPU:80 W
- Z820 Xeon E5-2643 4 Core 3.30GHz 10MB cache 1600MHz 2nd CPU:130 W
CPU multiplier (bus/core ratio)
- Z820 Xeon E5-2603 4 Core 1.80GHz 10MB cache 1066MHz 2nd CPU:18
- Z820 Xeon E5-2643 4 Core 3.30GHz 10MB cache 1600MHz 2nd CPU:35
Memory bandwidth supported by processor (max)
- Z820 Xeon E5-2603 4 Core 1.80GHz 10MB cache 1066MHz 2nd CPU:34.1 GB/s
- Z820 Xeon E5-2643 4 Core 3.30GHz 10MB cache 1600MHz 2nd CPU:51.2 GB/s

Side by side

Differences highlightedShow differences only

Comparison of Z820 Xeon E5-2603 4 Core 1.80GHz 10MB cache 1066MHz 2nd CPU, Z820 Xeon E5-2643 4 Core 3.30GHz 10MB cache 1600MHz 2nd CPU
49 specifications	A HP Z820 Xeon E5-2603 4 Core 1.80GHz 10MB cache 1066MHz 2nd CPU View product	B HP Z820 Xeon E5-2643 4 Core 3.30GHz 10MB cache 1600MHz 2nd CPU View product
Processor8 differ
Processor modelDiffers	E5-2603	E5-2643
Processor base frequencyDiffers	1.8 GHz	3.3 GHz
Processor threadsDiffers	4	8
System bus rateDiffers	6.4 GT/s	8 GT/s
Processor cache typeKnown for one	L2	Unknown — not stated by the source
Processor front side busDiffers	1066 MHz	1600 MHz
Thermal Design Power (TDP)Differs	80 W	130 W
CPU multiplier (bus/core ratio)Differs	18	35
Memory bandwidth supported by processor (max)Differs	34.1 GB/s	51.2 GB/s
Processor boost frequencyKnown for one	Unknown — not stated by the source	3.5 GHz
Memory1 differ
Memory clock speeds supported by processorDiffers	800,1066 MHz	800,1066,1333,1600 MHz
Processor special features2 differ
Intel® Hyper Threading Technology (Intel® HT Technology)Differs	No	Yes
Intel® Turbo Boost TechnologyDiffers	No	Yes
Operational conditions1 differ
TcaseDiffers	70 °C	73 °C

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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