Intel Core i7-7820X vs Core i5-11400

General info

Comparing Core i7-7820X and Core i5-11400 processor market type (desktop or notebook), architecture, sales start time and price.

Place in our rating
 
Value for money (0-100)
1.55
 
5.96
Market segment
Desktop processor
 
Desktop processor
Series
Intel Core i7
 
no data
Architecture codename
Skylake
 
Rocket Lake
Launch date
30 May 2017 (4 years ago)
 
16 March 2021 (less than a year ago)
Launch price (MSRP)
$599
 
no data
Price now
$1023 (1.7x MSRP)
 
$269

Technical specs

Core i7-7820X and Core i5-11400 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 cores
8 (Octa-Core)
 
6 (Hexa-Core)
Threads
16
 
12
Base clock speed
3.6 GHz
 
2.6 GHz
Boost clock speed
4.5 GHz
 
4.4 GHz
Bus support
4 × 8 GT/s
 
no data
L1 cache
512 KB
 
64K (per core)
L2 cache
8 MB
 
256K (per core)
L3 cache
11 MB (shared)
 
12 MB (shared)
Chip lithography
14 nm
 
14 nm
Maximum core temperature
99 °C
 
100 °C
Maximum case temperature (TCase)
72 °C
 
72 °C
64 bit support
+
 
+
Unlocked multiplier
+
 
-

Compatibility

Information on Core i7-7820X and Core i5-11400 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 configuration
1
 
1
Socket
FCLGA2066
 
FCLGA1200
Thermal design power (TDP)
140 Watt
 
65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-7820X and Core i5-11400. You'll probably need this information if you require some particular technology.

Instruction set extensions
Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2, Intel® AVX-512
 
Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2, Intel® AVX-512
AES-NI
+
 
+
AVX
+
 
+
vPro
no data
 
-
Enhanced SpeedStep (EIST)
+
 
+
Turbo Boost Technology
2.0
 
2.0
Hyper-Threading Technology
+
 
+
Idle States
no data
 
+
Thermal Monitoring
-
 
+
Turbo Boost Max 3.0
+
 
-

Security technologies

Core i7-7820X and Core i5-11400 technologies aimed at improving security, for example, by protecting against hacks.

TXT
no data
 
+
EDB
+
 
+
Secure Key
no data
 
+
Identity Protection
-
 
+
SGX
no data
 
-
OS Guard
no data
 
+

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-7820X and Core i5-11400 are enumerated here.

VT-d
+
 
+
VT-x
+
 
+
EPT
no data
 
+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-7820X and Core i5-11400. Depending on the motherboards, higher memory frequencies may be supported.

Supported memory types
DDR4-2666
 
DDR4-3200
Maximum memory size
128 GB
 
128 GB
Max memory channels
4
 
2
Maximum memory bandwidth
85 GB/s
 
50 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card
-
 
Max video memory
-
 
64 GB
Quick Sync Video
-
 
+
Clear Video
-
 
+
Clear Video HD
-
 
+
Graphics max frequency
-
 
1.3 GHz
Execution Units
-
 
24
InTru 3D
-
 
+

Graphics interfaces

Available interfaces and connections of Core i7-7820X and Core i5-11400 integrated GPUs.

Number of displays supported
-
 
3

Graphics image quality

Maximum display resolutions supported by Core i7-7820X and Core i5-11400 integrated GPUs, including resolutions over different interfaces.

4K resolution support
-
 
+
Max resolution over HDMI 1.4
-
 
4096x2160@60Hz
Max resolution over eDP
-
 
5120 x 3200 @60Hz
Max resolution over DisplayPort
-
 
5120 x 3200 @60Hz

Graphics API support

APIs supported by Core i7-7820X and Core i5-11400 integrated GPUs, sometimes API versions are included.

DirectX
-
 
12.1
OpenGL
-
 
4.5

Peripherals

Specifications and connection of peripherals supported by Core i7-7820X and Core i5-11400.

PCIe version
3.0
 
4.0
PCI Express lanes
28
 
20

Benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.

Overall 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.

i7-7820X 19.77
i5-11400 20.01 +1.2%

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.

i7-7820X 17354
i5-11400 17566 +1.2%

Gaming performance

Let's see how good Core i7-7820X and Core i5-11400 are for gaming compared with game system requirements. Remember that sometimes official requirements may reflect real performance inaccurately. Also, your gaming PC must have a decent enough GPU to perform well.

Both CPUs satisfy the 100% minimum and 100% recommended requirements of all games known to us.

Minimum
100%
Recommended
100%
Minimum
100%
Recommended
100%

Competitors of Core i7-7820X from AMD

We believe that the nearest equivalent to Core i7-7820X from AMD is Ryzen 7 PRO 2700X, which is slower by 1% and lower by 4 positions in our rating.

Here are some closest AMD rivals to Core i7-7820X:

Competitors of Core i5-11400 from AMD

We believe that the nearest equivalent to Core i5-11400 from AMD is Ryzen 7 2700X, which is nearly equal in speed and higher by 1 position in our rating.

Here are some closest AMD rivals to Core i5-11400:

Advantages of Intel Core i7-7820X

Higher boost clock speed (3600 vs 2600 MHz)

AES (Advanced Encryption Standard instructions set - hardware acceleration of AES encryption and decryption. Speeds up encryption software, e.g. Veracrypt)

x86-64 (a general name for 64-bit extension of x86 instruction set. There are AMD64 and Intel 64 versions that differ very little)

Unlocked

Advantages of Intel Core i5-11400

1.2% better performance in benchmarks

Much newer (16 March 2021 vs 30 May 2017)

Cheaper ($269 vs $1023)

Lower power consumption (65W vs 140W), meaning that the rival with higher TDP might require a better cooler or other thermal solution.

Intel 64 (64-bit Intel CPU architecture. Almost identical to AMD64, except small and rarely used nuances)

AES-NI (Advanced Encryption Standard New Instructions - additional instructions for hardware acceleration of AES encryption and decryption)

TXT (Trusted Execution Technology - protects the system against viruses and rootkits residing in BIOS or in a boot sector)

Thermal Monitoring Technologies

IdentityProtectionTechVersion

QuickSyncVideo

So, which one is the better CPU?

Technical City couldn't decide between Intel Core i7-7820X and Intel Core i5-11400. The differences in performance seem too small.

Should you still have questions on choice between Core i7-7820X and Core i5-11400, ask them in Comments section, and we shall answer.

Cast your vote

Do you think we are right or mistaken in our choice? Vote by clicking "Like" button near your favourite CPU.

Intel Core i7-7820X
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User rating

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Advices and comments

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