Xeon E5-1603 v3 vs X5647

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Aggregate performance score

Xeon X5647
2011
4 cores / 8 threads, 130 Watt
2.80
+0.4%
Xeon E5-1603 v3
2014
4 cores / 4 threads, 140 Watt
2.79

Primary details

Comparing Xeon X5647 and Xeon E5-1603 v3 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking16841689
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation1.78no data
Market segmentServerServer
Power efficiency2.041.89
Architecture codenameWestmere-EP (2010−2011)Haswell-EP (2014−2015)
Release date14 February 2011 (13 years ago)8 September 2014 (10 years ago)
Launch price (MSRP)$175no data

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Xeon X5647 and Xeon E5-1603 v3 basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.

Physical cores4 (Quad-Core)4 (Quad-Core)
Threads84
Base clock speed2.93 GHz2.8 GHz
Boost clock speed3.2 GHz2.8 GHz
Bus rateno data0 GT/s
L1 cache64 KB (per core)64K (per core)
L2 cache256 KB (per core)256K (per core)
L3 cache12 MB (shared)10 MB (shared)
Chip lithography32 nm22 nm
Die size239 mm2356 mm2
Maximum core temperature80 °C67 °C
Number of transistors1,170 million2,600 million
64 bit support++
Windows 11 compatibility--
VID voltage rangeno data0.65–1.3V

Compatibility

Information on Xeon X5647 and Xeon E5-1603 v3 compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.

Number of CPUs in a configuration21
SocketFCLGA1366,LGA1366FCLGA2011-3
Power consumption (TDP)130 Watt140 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon X5647 and Xeon E5-1603 v3. You'll probably need this information if you require some particular technology.

Instruction set extensionsIntel® SSE4.2Intel® AVX2
AES-NI++
AVX-+
vProno data+
Enhanced SpeedStep (EIST)++
Turbo Boost Technology1.0-
Hyper-Threading Technology+-
Idle States++
Thermal Monitoring-+
Flex Memory Accessno data-
Demand Based Switching++
PAE40 Bit46 Bit

Security technologies

Xeon X5647 and Xeon E5-1603 v3 technologies aimed at improving security, for example, by protecting against hacks.

TXT++
EDB++
Secure Keyno data+
Identity Protection-+
OS Guardno data+

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon X5647 and Xeon E5-1603 v3 are enumerated here.

VT-d++
VT-x++
EPT++

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon X5647 and Xeon E5-1603 v3. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR3DDR4-1333, DDR4-1600, DDR4-1866
Maximum memory size288 GB768 GB
Max memory channels34
Maximum memory bandwidth25.6 GB/s59 GB/s
ECC memory support++

Peripherals

Specifications and connection of peripherals supported by Xeon X5647 and Xeon E5-1603 v3.

PCIe version2.03.0
PCI Express lanesno data40

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.


Combined synthetic benchmark score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

Xeon X5647 2.80
+0.4%
Xeon E5-1603 v3 2.79

Passmark

Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.

Xeon X5647 4441
+0.2%
Xeon E5-1603 v3 4432

Gaming performance

Pros & cons summary


Performance score 2.80 2.79
Recency 14 February 2011 8 September 2014
Threads 8 4
Chip lithography 32 nm 22 nm
Power consumption (TDP) 130 Watt 140 Watt

Xeon X5647 has a 0.4% higher aggregate performance score, 100% more threads, and 7.7% lower power consumption.

Xeon E5-1603 v3, on the other hand, has an age advantage of 3 years, and a 45.5% more advanced lithography process.

Given the minimal performance differences, no clear winner can be declared between Xeon X5647 and Xeon E5-1603 v3.


Should you still have questions on choice between Xeon X5647 and Xeon E5-1603 v3, ask them in Comments section, and we shall answer.

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Intel Xeon X5647
Xeon X5647
Intel Xeon E5-1603 v3
Xeon E5-1603 v3

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Community ratings

Here you can see how users rate the processors, as well as rate them yourself.


3.9 17 votes

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Questions & comments

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