Intel Core i5-11400 vs Intel Core i7-7820X

Compare Intel 11th Generation Core i5 6 core CPU vs Intel Core X-series 8 core processor, specs and benchmark score. Which is the better CPU for gaming?

CPU Comparison

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Price

The cheapest price from our partner retailers

$ 129.99
$ 220.00 significantly less expensive
$ 349.99

Benchmark Score

Overall Score

A combined score of all workloads

5682 points
5865 points
3% slightly better overall score

Gaming Score

The raw gaming performance with a fast GPU

8370 points
15% slightly better gaming score
7275 points

Multitasking Score

Performance in workloads using up to 8 cores

4847 points
5393 points
11% slightly better multitasking score

Heavy Workload Score

Performance in workloads using up to 16 cores

4675 points
5258 points
12% slightly better heavy workload score

Free CPU Benchmark

Want to compare your processor against the Core i5-11400 and the Core i7-7820X? Download our free and quick PC Performance Test.

Other Benchmarks

3DMark Physics score

3DMark Physics score

Physics simulation benchmark

5721 points
5958 points
4% slightly higher 3DMark Physics score
Blender score

Blender score

Cycles Render (Samples per minute)

144.07 points
165.28 points
14% slightly higher Blender score
Geekbench 5 (multi) score

Geekbench 5 (multi) score

Multi threaded benchmark

7150 points
7618 points
6% slightly higher Geekbench 5 (multi) score
Geekbench 5 (single) score

Geekbench 5 (single) score

Single threaded benchmark

1888 points
38% slightly higher Geekbench 5 (single) score
1368 points
Geekbench 6 (multi) score

Geekbench 6 (multi) score

Multi threaded benchmark

7262 points
7802 points
7% slightly higher Geekbench 6 (multi) score
Geekbench 6 (single) score

Geekbench 6 (single) score

Single threaded benchmark

1960 points
38% slightly higher Geekbench 6 (single) score
1416 points

Specifications

Cores

Number of physical processing units

6
8
33% slightly more cores

Threads

Number of logical processing units

12
16
33% slightly more threads

Clock Speed

Base frequency at which the chip operates

3.6 GHz
Identical
3.6 GHz

Turbo Speed

Higher frequency used for heavy workloads

4.4 GHz
2% slightly higher turbo speed
4.3 GHz

TDP

Thermal Design Power: Measure of heat generated by the CPU

65 W
115% significantly lower TDP
140 W

PCIe Lanes

Number of physical connections between the CPU and expansion slots

20
28
40% slightly more pcie lanes

Memory Channels

Lanes for simultaneous memory access

2
4
100% significantly more memory channels

Supported Memory

Maximum amount of RAM supported by this CPU

128 GiB
Identical
128 GiB

L1 Cache

Smallest embedded memory, but the fastest

480 KiB
512 KiB
6% slightly more L1 cache

L3 Cache

General memory pool for all cores

12 MiB
9% slightly more L3 cache
11 MiB

Other details

Rank

Ranking in the hardwareDB database

276th of 1,089
262nd of 1,089

Family

The product line

11th Generation Core i5
Core X-series

Release date

The official date of release of this chip

2021 February
2017 May

Memory Type

The type of memory used by this chip

DDR4-3200
DDR4-2666

Is Unlocked

Can this CPU can be overclocked

No
Yes

Supports ECC memory

Does this CPU support error correcting memory

No
No

Core i5-11400 vs Core i7-7820X specs and performance

In our benchmarks, the Core i7-7820X beats the Core i5-11400 in overall performance. Despite this, the Core i5-11400 has the advantage in our gaming benchmark.

In terms of the number of cores of each of these CPUs, the Core i7-7820X has slightly more cores than the Core i5-11400. Indeed, the Core i7-7820X has 8 cores compared to 6 cores found in the Core i5-11400. It also has more threads than the Core i5-11400. In terms of clock speed, the Core i5-11400 and Core i7-7820X are identical in this regard. Despite this, the Core i5-11400 has a slightly higher turbo speed. A Core i5-11400 CPU outputs less heat than a Core i7-7820X CPU because of its significantly lower TDP. This measures the amount of heat they output and can be used to estimate power consumption.

Modern CPUs generally have more logical cores than physical cores, this means that each core is split into multiple virtual cores, improving efficiency for parallel workloads. Indeed, the Core i5-11400 has more threads than cores. Each physical core is split into multiple threads.

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