FX-8320 vs i7-5820K

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Aggregate performance score

Core i7-5820K
2014
6 cores / 12 threads, 140 Watt
6.20
+80.8%
FX-8320
2012
8 cores / 8 threads, 125 Watt
3.43

Core i7-5820K outperforms FX-8320 by an impressive 81% based on our aggregate benchmark results.

Primary details

Comparing Core i7-5820K and FX-8320 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking10881562
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation1.19no data
Market segmentDesktop processorDesktop processor
Power efficiency4.192.60
Architecture codenameHaswell-E (2014)Vishera (2012−2015)
Release date1 September 2014 (10 years ago)23 October 2012 (12 years ago)
Launch price (MSRP)$410no data

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Core i7-5820K and FX-8320 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)8 (Octa-Core)
Threads128
Base clock speed3.3 GHz3.5 GHz
Boost clock speed3.6 GHz4 GHz
Bus rate0 GT/sno data
L1 cache64 KB (per core)no data
L2 cache256 KB (per core)8192 KB
L3 cache15 MB (shared)no data
Chip lithography22 nm32 nm
Die size356 mm2315 mm2
Maximum core temperature67 °C61 °C
Number of transistors2,600 million1,200 million
64 bit support++
Windows 11 compatibility--
Unlocked multiplier++
P0 Vcore voltageno dataMin: 1.2 V - Max: 1.4 V

Compatibility

Information on Core i7-5820K and FX-8320 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
SocketFCLGA2011AM3+
Power consumption (TDP)140 Watt125 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-5820K and FX-8320. You'll probably need this information if you require some particular technology.

Instruction set extensionsIntel® SSE4.2, Intel® AVX2no data
AES-NI++
FMA-+
AVX++
Enhanced SpeedStep (EIST)+no data
Turbo Boost Technology2.0no data
Hyper-Threading Technology+no data
TSX+-
Idle States+no data
Thermal Monitoring+-
Smart Response+no data
Demand Based Switching-no data

Security technologies

Core i7-5820K and FX-8320 technologies aimed at improving security, for example, by protecting against hacks.

TXT+no data
EDB+no data
Identity Protection+-

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-5820K and FX-8320 are enumerated here.

AMD-V-+
VT-d+no data
VT-x+no data
EPT+no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-5820K and FX-8320. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR4DDR3
Maximum memory size64 GBno data
Max memory channels4no data
Maximum memory bandwidth68 GB/sno data

Peripherals

Specifications and connection of peripherals supported by Core i7-5820K and FX-8320.

PCIe version3.0n/a
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
+80.8%
FX-8320 3.43

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
+80.9%
FX-8320 5441

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
+155%
FX-8320 460

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
+201%
FX-8320 1809

3DMark Fire Strike Physics

i7-5820K 12430
+92.4%
FX-8320 6460

Gaming performance

Pros & cons summary


Performance score 6.20 3.43
Recency 1 September 2014 23 October 2012
Physical cores 6 8
Threads 12 8
Chip lithography 22 nm 32 nm
Power consumption (TDP) 140 Watt 125 Watt

i7-5820K has a 80.8% higher aggregate performance score, an age advantage of 1 year, 50% more threads, and a 45.5% more advanced lithography process.

FX-8320, on the other hand, has 33.3% more physical cores, and 12% lower power consumption.

The Core i7-5820K is our recommended choice as it beats the FX-8320 in performance tests.


Should you still have questions on choice between Core i7-5820K and FX-8320, ask them in Comments section, and we shall answer.

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Intel Core i7-5820K
Core i7-5820K
AMD FX-8320
FX-8320

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Community ratings

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Questions & comments

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