i7-7820EQ vs i5-6400

Primary details

Comparing Core i5-6400 and Core i7-7820EQ processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1545	1248
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.71	no data
Market segment	Desktop processor	Laptop
Series	Intel Core i5	Intel Core i7
Power efficiency	4.97	9.99
Architecture codename	Skylake (2015−2016)	Kaby Lake (2016−2019)
Release date	1 September 2015 (9 years ago)	3 January 2017 (7 years ago)
Launch price (MSRP)	$187	$378

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core i5-6400 and Core i7-7820EQ 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	4 (Quad-Core)	4 (Quad-Core)
Threads	4	8
Base clock speed	2.7 GHz	no data
Boost clock speed	3.3 GHz	3.1 GHz
Bus type	DMI 3.0	DMI 3.0
Bus rate	4 × 8 GT/s	8 GT/s
Multiplier	27	31
L1 cache	256 KB	256 KB
L2 cache	1 MB	1 MB
L3 cache	6 MB (shared)	8 MB
Chip lithography	14 nm	14 nm
Die size	122 mm2	no data
Maximum case temperature (TCase)	72 °C	no data
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Core i5-6400 and Core i7-7820EQ 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 (Uniprocessor)	1 (Uniprocessor)
Socket	FCLGA1151	no data
Power consumption (TDP)	65 Watt	45 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i5-6400 and Core i7-7820EQ. You'll probably need this information if you require some particular technology.

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

Security technologies

Core i5-6400 and Core i7-7820EQ technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	+
EDB	+	no data
Secure Key	+	no data
MPX	+	-
Identity Protection	+	-
SGX	Yes with Intel® ME	no data
OS Guard	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Core i5-6400 and Core i7-7820EQ are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i5-6400 and Core i7-7820EQ. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3, DDR4	DDR3L-1600
Maximum memory size	64 GB	64 GB
Max memory channels	2	2
Maximum memory bandwidth	34.134 GB/s	34.134 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card Compare	Intel HD Graphics 530	Intel HD Graphics 630
Max video memory	64 GB	no data
Quick Sync Video	+	-
Clear Video	+	no data
Clear Video HD	+	no data
Graphics max frequency	950 MHz	no data
InTru 3D	+	no data

Graphics interfaces

Available interfaces and connections of Core i5-6400 and Core i7-7820EQ integrated GPUs.

Number of displays supported	3	no data
eDP	+	no data
DisplayPort	+	-
HDMI	+	-
DVI	+	no data

Graphics image quality

Maximum display resolutions supported by Core i5-6400 and Core i7-7820EQ integrated GPUs, including resolutions over different interfaces.

4K resolution support	+	no data
Max resolution over HDMI 1.4	4096x2304@24Hz	no data
Max resolution over eDP	4096x2304@60Hz	no data
Max resolution over DisplayPort	4096x2304@60Hz	no data
Max resolution over VGA	N/A	no data

Graphics API support

APIs supported by Core i5-6400 and Core i7-7820EQ integrated GPUs, sometimes API versions are included.

DirectX	12	no data
OpenGL	4.5	no data

Peripherals

Specifications and connection of peripherals supported by Core i5-6400 and Core i7-7820EQ.

PCIe version	3.0	3.0
PCI Express lanes	16	16

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.

---

Pros & cons summary

---

Performance score	3.54	4.93
Integrated graphics card	2.59	3.10
Recency	1 September 2015	3 January 2017
Threads	4	8
Power consumption (TDP)	65 Watt	45 Watt

---

Should you still have questions on choice between Core i5-6400 and Core i7-7820EQ, ask them in Comments section, and we shall answer.

Vote for your favorite

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

---