i5-1235U vs Xeon E5420

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Aggregate performance score

Xeon E5420
2007
80 Watt
1.27
Core i5-1235U
2022
10 cores / 12 threads, 15 Watt
8.41
+562%

Core i5-1235U outperforms Xeon E5420 by a whopping 562% based on our aggregate benchmark results.

Primary details

Comparing Xeon E5420 and Core i5-1235U processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking2296908
Place by popularitynot in top-10018
Market segmentServerLaptop
Seriesno dataIntel Alder Lake-M
Power efficiency1.5053.06
Architecture codenameno dataAlder Lake-U (2022)
Release date1 October 2007 (17 years ago)23 February 2022 (2 years ago)

Detailed specifications

Xeon E5420 and Core i5-1235U 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 coresno data10 (Deca-Core)
Threadsno data12
Base clock speed2.5 GHz1.3 GHz
Boost clock speedno data4.4 GHz
L1 cacheno data80K (per core)
L2 cacheno data1.25 MB (per core)
L3 cache12 MB L2 Cache12 MB (shared)
Chip lithography45 nmIntel 7 nm
Maximum core temperature67 °C100 °C
64 bit support++
Windows 11 compatibility-+
VID voltage range0.85V-1.35Vno data

Compatibility

Information on Xeon E5420 and Core i5-1235U 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 configurationno data1
SocketLGA771FCBGA1744
Power consumption (TDP)80 Watt15 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E5420 and Core i5-1235U. You'll probably need this information if you require some particular technology.

Instruction set extensionsno dataIntel® SSE4.1, Intel® SSE4.2, Intel® AVX2
AES-NI-+
FMA-+
AVX-+
Enhanced SpeedStep (EIST)++
Speed Shiftno data+
Turbo Boost Technology-no data
Hyper-Threading Technology-+
TSX-+
Idle States+no data
Thermal Monitoring++
Flex Memory Accessno data+
Demand Based Switching+no data
FSB parity+no data
Deep Learning Boost-+

Security technologies

Xeon E5420 and Core i5-1235U technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon E5420 and Core i5-1235U are enumerated here.

VT-dno data+
VT-x++
EPT-+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E5420 and Core i5-1235U. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesno dataDDR4, DDR5
Maximum memory sizeno data64 GB
Max memory channelsno data2

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardno dataIntel® Iris® Xe Graphics eligible
Quick Sync Video-+
Graphics max frequencyno data1.2 GHz
Execution Unitsno data80

Graphics interfaces

Available interfaces and connections of Xeon E5420 and Core i5-1235U integrated GPUs.

Number of displays supportedno data4

Graphics image quality

Maximum display resolutions supported by Xeon E5420 and Core i5-1235U integrated GPUs, including resolutions over different interfaces.

Max resolution over HDMI 1.4no data4096 x 2304 @ 60Hz
Max resolution over eDPno data4096 x 2304 @ 120Hz
Max resolution over DisplayPortno data7680 x 4320 @ 60Hz

Graphics API support

APIs supported by Xeon E5420 and Core i5-1235U integrated GPUs, sometimes API versions are included.

DirectXno data12.1
OpenGLno data4.6

Peripherals

Specifications and connection of peripherals supported by Xeon E5420 and Core i5-1235U.

PCIe versionno data4.0
PCI Express lanesno data20

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 E5420 1.27
i5-1235U 8.41
+562%

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 E5420 2022
i5-1235U 13351
+560%

GeekBench 5 Single-Core

GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.

Xeon E5420 368
i5-1235U 1847
+402%

GeekBench 5 Multi-Core

GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.

Xeon E5420 1197
i5-1235U 5673
+374%

Gaming performance

Pros & cons summary


Performance score 1.27 8.41
Recency 1 October 2007 23 February 2022
Power consumption (TDP) 80 Watt 15 Watt

i5-1235U has a 562.2% higher aggregate performance score, an age advantage of 14 years, and 433.3% lower power consumption.

The Core i5-1235U is our recommended choice as it beats the Xeon E5420 in performance tests.

Be aware that Xeon E5420 is a server/workstation processor while Core i5-1235U is a notebook one.


Should you still have questions on choice between Xeon E5420 and Core i5-1235U, ask them in Comments section, and we shall answer.

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Intel Xeon E5420
Xeon E5420
Intel Core i5-1235U
Core i5-1235U

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Community ratings

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


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Questions & comments

Here you can ask a question about Xeon E5420 or Core i5-1235U, agree or disagree with our judgements, or report an error or mismatch.