A8-6600K vs i7-3820

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Aggregate performance score

Core i7-3820
2012
4 cores / 8 threads, 130 Watt
3.63
+92.1%
A8-6600K
2013
4 cores / 4 threads, 100 Watt
1.89

Core i7-3820 outperforms A8-6600K by an impressive 92% based on our aggregate benchmark results.

Primary details

Comparing Core i7-3820 and A8-6600K processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking14901966
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation2.320.23
Market segmentDesktop processorDesktop processor
Seriesno dataAMD A-Series (Desktop)
Power efficiency2.641.79
Architecture codenameSandy Bridge-E (2011−2013)Richland (2013−2014)
Release dateFebruary 2012 (12 years ago)1 June 2013 (11 years ago)
Launch price (MSRP)$400$142

Cost-effectiveness evaluation

Performance per price, higher is better.

i7-3820 has 909% better value for money than A8-6600K.

Detailed specifications

Core i7-3820 and A8-6600K 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)
Threads84
Base clock speed3.6 GHz3.9 GHz
Boost clock speed3.8 GHz4.2 GHz
Bus rate5 GT/sno data
L1 cache64 KB (per core)192 KB
L2 cache256 KB (per core)4096 KB
L3 cache10240 KB (shared)0 KB
Chip lithography32 nm32 nm
Die size294 mm2246 mm2
Maximum core temperatureno data74 °C
Maximum case temperature (TCase)67 °C74 °C
Number of transistors1270 million1,178 million
64 bit support++
Windows 11 compatibility--
Unlocked multiplier-+

Compatibility

Information on Core i7-3820 and A8-6600K 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
SocketFCLGA2011FM2
Power consumption (TDP)130 Watt100 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-3820 and A8-6600K. You'll probably need this information if you require some particular technology.

Instruction set extensionsIntel® SSE4.2, Intel® AVXno data
AES-NI++
FMA-FMA4
AVX+AVX
PowerNow-+
PowerGating-+
VirusProtect-+
Enhanced SpeedStep (EIST)+no data
Turbo Boost Technology2.0no data
Hyper-Threading Technology+no data
Idle States+no data
Thermal Monitoring+-
Smart Response+no data
Demand Based Switching-no data

Security technologies

Core i7-3820 and A8-6600K 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 i7-3820 and A8-6600K are enumerated here.

AMD-V-+
VT-d+no data
VT-x+no data
EPT+no data
IOMMU 2.0-+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-3820 and A8-6600K. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR3DDR3-1866
Maximum memory size64.23 GBno data
Max memory channels42
Maximum memory bandwidth51.2 GB/sno data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardno dataAMD Radeon HD 8570D
Number of pipelinesno data256
Enduro-+
Switchable graphics-+
UVD-+
VCE-+

Graphics interfaces

Available interfaces and connections of Core i7-3820 and A8-6600K integrated GPUs.

DisplayPort-+
HDMI-+

Graphics API support

APIs supported by Core i7-3820 and A8-6600K integrated GPUs, sometimes API versions are included.

DirectXno dataDirectX® 11

Peripherals

Specifications and connection of peripherals supported by Core i7-3820 and A8-6600K.

PCIe version2.02.0
PCI Express lanes40no 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.

i7-3820 3.63
+92.1%
A8-6600K 1.89

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.

i7-3820 5769
+91.9%
A8-6600K 3007

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.

i7-3820 623
+38.1%
A8-6600K 451

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.

i7-3820 2296
+112%
A8-6600K 1083

3DMark Fire Strike Physics

i7-3820 6240
+57.2%
A8-6600K 3970

Gaming performance

Pros & cons summary


Performance score 3.63 1.89
Threads 8 4
Power consumption (TDP) 130 Watt 100 Watt

i7-3820 has a 92.1% higher aggregate performance score, and 100% more threads.

A8-6600K, on the other hand, has 30% lower power consumption.

The Core i7-3820 is our recommended choice as it beats the A8-6600K in performance tests.


Should you still have questions on choice between Core i7-3820 and A8-6600K, ask them in Comments section, and we shall answer.

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Intel Core i7-3820
Core i7-3820
AMD A8-6600K
A8-6600K

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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

Here you can ask a question about Core i7-3820 or A8-6600K, agree or disagree with our judgements, or report an error or mismatch.