i7-8665U vs Xeon E5540

VS

Aggregate performance score

Xeon E5540
2009
4 cores / 8 threads, 80 Watt
1.75
Core i7-8665U
2018
4 cores / 8 threads, 15 Watt
3.93
+125%

Core i7-8665U outperforms Xeon E5540 by a whopping 125% based on our aggregate benchmark results.

Primary details

Comparing Xeon E5540 and Core i7-8665U processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking20351445
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation0.64no data
Market segmentServerLaptop
Seriesno dataIntel Core i7
Power efficiency2.0624.67
Architecture codenameGainestown (2009−2010)Whiskey Lake-U (2018−2019)
Release date30 March 2009 (15 years ago)1 October 2018 (6 years ago)
Launch price (MSRP)$30$409

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Xeon E5540 and Core i7-8665U 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)
Threads88
Base clock speed2.53 GHz1.9 GHz
Boost clock speed2.8 GHz4.8 GHz
Bus typeno dataOPI
Bus rateno data4 GT/s
Multiplierno data19
L1 cache64 KB (per core)64 KB (per core)
L2 cache256 KB (per core)256 KB (per core)
L3 cache8 MB (shared)8 MB (shared)
Chip lithography45 nm14 nm
Die size263 mm2no data
Maximum core temperature76 °C100 °C
Number of transistors731 millionno data
64 bit support++
Windows 11 compatibility-+

Compatibility

Information on Xeon E5540 and Core i7-8665U 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 (Uniprocessor)
SocketFCLGA1366FCBGA1528
Power consumption (TDP)80 Watt15 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E5540 and Core i7-8665U. 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-+
AVX-+
Enhanced SpeedStep (EIST)++
Speed Shiftno data+
My WiFino data+
Turbo Boost Technology1.02.0
Hyper-Threading Technology++
TSX-+
Idle States++
Thermal Monitoring-+
Flex Memory Accessno data+
SIPP-+
Smart Responseno data+
Demand Based Switching+no data
PAE40 Bitno data

Security technologies

Xeon E5540 and Core i7-8665U technologies aimed at improving security, for example, by protecting against hacks.

TXT++
EDB++
Secure Keyno data+
MPX-+
Identity Protection-+
SGXno dataYes with Intel® ME
OS Guardno data+

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon E5540 and Core i7-8665U are enumerated here.

AMD-V-+
VT-d++
VT-x++
EPT++

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E5540 and Core i7-8665U. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR3DDR4
Maximum memory size144 GB64 GB
Max memory channels32
Maximum memory bandwidth25.6 GB/s38.397 GB/s
ECC memory support+-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardN/AIntel UHD Graphics for 8th Generation Intel Processors
Max video memoryno data32 GB
Quick Sync Video-+
Clear Videono data+
Clear Video HDno data+
Graphics max frequencyno data1.15 GHz

Graphics interfaces

Available interfaces and connections of Xeon E5540 and Core i7-8665U integrated GPUs.

Number of displays supportedno data3
eDPno data+
DisplayPort-+
HDMI-+
DVIno data+

Graphics image quality

Maximum display resolutions supported by Xeon E5540 and Core i7-8665U integrated GPUs, including resolutions over different interfaces.

4K resolution supportno data+
Max resolution over HDMI 1.4no data4096 x 2304@24Hz
Max resolution over eDPno data4096 x 2304@60Hz
Max resolution over DisplayPortno data4096 x 2304@60Hz

Graphics API support

APIs supported by Xeon E5540 and Core i7-8665U integrated GPUs, sometimes API versions are included.

DirectXno data12
OpenGLno data4.5

Peripherals

Specifications and connection of peripherals supported by Xeon E5540 and Core i7-8665U.

PCIe version2.03.0
PCI Express lanesno data16

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 E5540 1.75
i7-8665U 3.93
+125%

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 E5540 2783
i7-8665U 6244
+124%

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 E5540 376
i7-8665U 765
+103%

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 E5540 1376
i7-8665U 2425
+76.2%

Gaming performance

Pros & cons summary


Performance score 1.75 3.93
Recency 30 March 2009 1 October 2018
Chip lithography 45 nm 14 nm
Power consumption (TDP) 80 Watt 15 Watt

i7-8665U has a 124.6% higher aggregate performance score, an age advantage of 9 years, a 221.4% more advanced lithography process, and 433.3% lower power consumption.

The Core i7-8665U is our recommended choice as it beats the Xeon E5540 in performance tests.

Be aware that Xeon E5540 is a server/workstation processor while Core i7-8665U is a notebook one.


Should you still have questions on choice between Xeon E5540 and Core i7-8665U, ask them in Comments section, and we shall answer.

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Intel Xeon E5540
Xeon E5540
Intel Core i7-8665U
Core i7-8665U

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Community ratings

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