i7-12700 vs Xeon E5645

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Aggregate performance score

Xeon E5645
2010
6 cores / 12 threads, 80 Watt
3.18
Core i7-12700
2022
12 cores / 20 threads, 65 Watt
19.34
+508%

Core i7-12700 outperforms Xeon E5645 by a whopping 508% based on our aggregate benchmark results.

Primary details

Comparing Xeon E5645 and Core i7-12700 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking1618300
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation1.38no data
Market segmentServerDesktop processor
Power efficiency3.7628.14
Architecture codenameWestmere-EP (2010−2011)Alder Lake-S (2022)
Release date16 March 2010 (14 years ago)January 2022 (2 years ago)
Launch price (MSRP)$294$349

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Xeon E5645 and Core i7-12700 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 cores6 (Hexa-Core)12 (Dodeca-Core)
Threads1220
Base clock speed2.4 GHz2.1 GHz
Boost clock speed2.67 GHz4.9 GHz
L1 cache64 KB (per core)80 KB (per core)
L2 cache256 KB (per core)1.25 MB (per core)
L3 cache12 MB (shared)25 MB (shared)
Chip lithography32 nmIntel 7 nm
Die size239 mm2215 mm2
Maximum core temperature76 °C100 °C
Number of transistors1,170 millionno data
64 bit support++
Windows 11 compatibility-+

Compatibility

Information on Xeon E5645 and Core i7-12700 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,LGA1366FCLGA1700
Power consumption (TDP)80 Watt65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E5645 and Core i7-12700. You'll probably need this information if you require some particular technology.

Instruction set extensionsIntel® SSE4.2Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
AES-NI++
AVX-+
Enhanced SpeedStep (EIST)++
Speed Shiftno data+
Turbo Boost Technology1.02.0
Hyper-Threading Technology++
TSX-+
Idle States++
Thermal Monitoring-+
SIPP-+
Demand Based Switching+no data
PAE40 Bitno data
Turbo Boost Max 3.0no data+
Deep Learning Boost-+

Security technologies

Xeon E5645 and Core i7-12700 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 E5645 and Core i7-12700 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E5645 and Core i7-12700. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR3DDR5-4800, DDR4-3200
Maximum memory size288 GB128 GB
Max memory channels32
Maximum memory bandwidth32 GB/s76.8 GB/s
ECC memory support++

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardno dataIntel UHD Graphics 770
Quick Sync Video-+
Clear Video HDno data+
Graphics max frequencyno data1.5 GHz
Execution Unitsno data32

Graphics interfaces

Available interfaces and connections of Xeon E5645 and Core i7-12700 integrated GPUs.

Number of displays supportedno data4

Graphics image quality

Maximum display resolutions supported by Xeon E5645 and Core i7-12700 integrated GPUs, including resolutions over different interfaces.

Max resolution over HDMI 1.4no data4096 x 2160 @ 60Hz
Max resolution over eDPno data5120 x 3200 @ 120Hz
Max resolution over DisplayPortno data7680 x 4320 @ 60Hz

Graphics API support

APIs supported by Xeon E5645 and Core i7-12700 integrated GPUs, sometimes API versions are included.

DirectXno data12
OpenGLno data4.5

Peripherals

Specifications and connection of peripherals supported by Xeon E5645 and Core i7-12700.

PCIe version2.05.0 and 4.0
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 E5645 3.18
i7-12700 19.34
+508%

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 E5645 5048
i7-12700 30722
+509%

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 E5645 372
i7-12700 2414
+549%

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 E5645 1842
i7-12700 11195
+508%

Gaming performance

Pros & cons summary


Performance score 3.18 19.34
Physical cores 6 12
Threads 12 20
Power consumption (TDP) 80 Watt 65 Watt

i7-12700 has a 508.2% higher aggregate performance score, 100% more physical cores and 66.7% more threads, and 23.1% lower power consumption.

The Core i7-12700 is our recommended choice as it beats the Xeon E5645 in performance tests.

Be aware that Xeon E5645 is a server/workstation processor while Core i7-12700 is a desktop one.


Should you still have questions on choice between Xeon E5645 and Core i7-12700, ask them in Comments section, and we shall answer.

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Intel Xeon E5645
Xeon E5645
Intel Core i7-12700
Core i7-12700

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Community ratings

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Questions & comments

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