Ryzen 9 7900X3D vs i7-5820K

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Aggregate performance score

Core i7-5820K
2014
6 cores / 12 threads, 140 Watt
6.20
Ryzen 9 7900X3D
2023
12 cores / 24 threads, 120 Watt
31.74
+412%

Ryzen 9 7900X3D outperforms Core i7-5820K by a whopping 412% based on our aggregate benchmark results.

Primary details

Comparing Core i7-5820K and Ryzen 9 7900X3D processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking1087130
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation1.1949.27
Market segmentDesktop processorDesktop processor
Seriesno dataAMD Ryzen 9
Power efficiency4.1925.03
Architecture codenameHaswell-E (2014)Raphael (2023−2024)
Release date1 September 2014 (10 years ago)4 January 2023 (1 year ago)
Launch price (MSRP)$410$599

Cost-effectiveness evaluation

Performance per price, higher is better.

Ryzen 9 7900X3D has 4040% better value for money than i7-5820K.

Detailed specifications

Core i7-5820K and Ryzen 9 7900X3D 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)
Threads1224
Base clock speed3.3 GHz4.4 GHz
Boost clock speed3.6 GHz5.6 GHz
Bus rate0 GT/sno data
L1 cache64 KB (per core)64K (per core)
L2 cache256 KB (per core)1 MB (per core)
L3 cache15 MB (shared)128 MB (shared)
Chip lithography22 nm5 nm, 6 nm
Die size356 mm22x 71 mm2
Maximum core temperature67 °Cno data
Maximum case temperature (TCase)no data47 °C
Number of transistors2,600 million13,140 million
64 bit support++
Windows 11 compatibility-+
Unlocked multiplier++

Compatibility

Information on Core i7-5820K and Ryzen 9 7900X3D 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
SocketFCLGA2011AM5
Power consumption (TDP)140 Watt120 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-5820K and Ryzen 9 7900X3D. You'll probably need this information if you require some particular technology.

Instruction set extensionsIntel® SSE4.2, Intel® AVX2no data
AES-NI++
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
Precision Boost 2no data+

Security technologies

Core i7-5820K and Ryzen 9 7900X3D 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 Ryzen 9 7900X3D 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 Ryzen 9 7900X3D. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR4DDR5-5200
Maximum memory size64 GB128 GB
Max memory channels4no data
Maximum memory bandwidth68 GB/sno data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardno dataAMD Radeon Graphics

Peripherals

Specifications and connection of peripherals supported by Core i7-5820K and Ryzen 9 7900X3D.

PCIe version3.05.0
PCI Express lanes2824

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
Ryzen 9 7900X3D 31.74
+412%

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
Ryzen 9 7900X3D 50411
+412%

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
Ryzen 9 7900X3D 2858
+144%

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
Ryzen 9 7900X3D 17585
+222%

Gaming performance

Pros & cons summary


Performance score 6.20 31.74
Recency 1 September 2014 4 January 2023
Physical cores 6 12
Threads 12 24
Chip lithography 22 nm 5 nm
Power consumption (TDP) 140 Watt 120 Watt

Ryzen 9 7900X3D has a 411.9% higher aggregate performance score, an age advantage of 8 years, 100% more physical cores and 100% more threads, a 340% more advanced lithography process, and 16.7% lower power consumption.

The Ryzen 9 7900X3D is our recommended choice as it beats the Core i7-5820K in performance tests.


Should you still have questions on choice between Core i7-5820K and Ryzen 9 7900X3D, ask them in Comments section, and we shall answer.

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Intel Core i7-5820K
Core i7-5820K
AMD Ryzen 9 7900X3D
Ryzen 9 7900X3D

Similar processor comparisons

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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

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