Xeon E3-1245 v2 vs i7-5820K

VS

Aggregate performance score

Core i7-5820K
2014
6 cores / 12 threads, 140 Watt
6.20
+55.8%
Xeon E3-1245 v2
2012
4 cores / 8 threads, 77 Watt
3.98

Core i7-5820K outperforms Xeon E3-1245 v2 by an impressive 56% based on our aggregate benchmark results.

Primary details

Comparing Core i7-5820K and Xeon E3-1245 v2 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking10871432
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation1.191.39
Market segmentDesktop processorServer
Power efficiency4.194.89
Architecture codenameHaswell-E (2014)Ivy Bridge (2012−2013)
Release date1 September 2014 (10 years ago)14 May 2012 (12 years ago)
Launch price (MSRP)$410$462

Cost-effectiveness evaluation

Performance per price, higher is better.

Xeon E3-1245 v2 has 17% better value for money than i7-5820K.

Detailed specifications

Core i7-5820K and Xeon E3-1245 v2 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)4 (Quad-Core)
Threads128
Base clock speed3.3 GHz3.4 GHz
Boost clock speed3.6 GHz3.8 GHz
Bus rate0 GT/s5 GT/s
L1 cache64 KB (per core)64 KB (per core)
L2 cache256 KB (per core)256 KB (per core)
L3 cache15 MB (shared)8 MB (shared)
Chip lithography22 nm22 nm
Die size356 mm2160 mm2
Maximum core temperature67 °Cno data
Number of transistors2,600 million1,400 million
64 bit support++
Windows 11 compatibility--
Unlocked multiplier+-

Compatibility

Information on Core i7-5820K and Xeon E3-1245 v2 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 configuration11
SocketFCLGA2011FCLGA1155
Power consumption (TDP)140 Watt77 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-5820K and Xeon E3-1245 v2. You'll probably need this information if you require some particular technology.

Instruction set extensionsIntel® SSE4.2, Intel® AVX2Intel® SSE4.1, Intel® SSE4.2, Intel® AVX
AES-NI++
AVX++
Enhanced SpeedStep (EIST)++
Turbo Boost Technology2.02.0
Hyper-Threading Technology++
TSX+-
Idle States++
Thermal Monitoring++
Flex Memory Accessno data+
Smart Response+no data
Demand Based Switching-+
FDIno data+
Fast Memory Accessno data+

Security technologies

Core i7-5820K and Xeon E3-1245 v2 technologies aimed at improving security, for example, by protecting against hacks.

TXT++
EDB++
Identity Protection++

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-5820K and Xeon E3-1245 v2 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-5820K and Xeon E3-1245 v2. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR4DDR3
Maximum memory size64 GB32.77 GB
Max memory channels42
Maximum memory bandwidth68 GB/s25.6 GB/s
ECC memory support-+

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardno dataIntel HD P4000
Quick Sync Video-+
Clear Video HDno data+
Graphics max frequencyno data1.25 GHz
InTru 3Dno data+

Graphics interfaces

Available interfaces and connections of Core i7-5820K and Xeon E3-1245 v2 integrated GPUs.

Number of displays supportedno data3

Peripherals

Specifications and connection of peripherals supported by Core i7-5820K and Xeon E3-1245 v2.

PCIe version3.03.0
PCI Express lanes28no data

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.

i7-5820K 6.20
+55.8%
Xeon E3-1245 v2 3.98

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.

i7-5820K 9841
+55.7%
Xeon E3-1245 v2 6319

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.

i7-5820K 1171
+77.2%
Xeon E3-1245 v2 661

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.

i7-5820K 5454
+140%
Xeon E3-1245 v2 2271

Gaming performance

Pros & cons summary


Performance score 6.20 3.98
Recency 1 September 2014 14 May 2012
Physical cores 6 4
Threads 12 8
Power consumption (TDP) 140 Watt 77 Watt

i7-5820K has a 55.8% higher aggregate performance score, an age advantage of 2 years, and 50% more physical cores and 50% more threads.

Xeon E3-1245 v2, on the other hand, has 81.8% lower power consumption.

The Core i7-5820K is our recommended choice as it beats the Xeon E3-1245 v2 in performance tests.

Note that Core i7-5820K is a desktop processor while Xeon E3-1245 v2 is a server/workstation one.


Should you still have questions on choice between Core i7-5820K and Xeon E3-1245 v2, ask them in Comments section, and we shall answer.

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Intel Core i7-5820K
Core i7-5820K
Intel Xeon E3-1245 v2
Xeon E3-1245 v2

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Community ratings

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