Celeron B840 vs Core i7-7820HQ

Primary details

Comparing Core i7-7820HQ and Celeron B840 processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	1225	2648
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Laptop
Series	Intel Core i7	Intel Celeron
Architecture codename	Kaby Lake-H (2017)	Sandy Bridge (2011−2013)
Release date	3 January 2017 (7 years ago)	1 July 2011 (13 years ago)
Launch price (MSRP)	$378	$86
Current price	$1440 (3.8x MSRP)	$133 (1.5x MSRP)

Detailed specifications

Core i7-7820HQ and Celeron B840 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)	2 (Dual-core)
Threads	8	2
Base clock speed	2.9 GHz	1.9 GHz
Boost clock speed	3.9 GHz	1.9 GHz
L1 cache	64K (per core)	64K (per core)
L2 cache	256K (per core)	256K (per core)
L3 cache	8 MB (shared)	2 MB (shared)
Chip lithography	14 nm	32 nm
Die size	126 mm2	131 mm2
Maximum core temperature	100 °C	100 °C
Number of transistors	no data	504 million
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	No	No

Compatibility

Information on Core i7-7820HQ and Celeron B840 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	FCBGA1440	FCPGA988,PGA988
Power consumption (TDP)	45 Watt	35 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-7820HQ and Celeron B840. 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	+	-
FMA	no data	+
AVX	+	no data
vPro	+	no data
Enhanced SpeedStep (EIST)	+	+
Speed Shift	+	no data
My WiFi	+	+
Turbo Boost Technology	2.0	-
Hyper-Threading Technology	+	-
TSX	+	no data
Idle States	+	+
Thermal Monitoring	+	+
Flex Memory Access	+	+
SIPP	+	no data
Smart Response	+	no data
Demand Based Switching	no data	-
FDI	no data	+
Fast Memory Access	no data	+
Status	Discontinued	Discontinued

Security technologies

Core i7-7820HQ and Celeron B840 technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-7820HQ and Celeron B840 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-7820HQ and Celeron B840. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4	DDR3
Maximum memory size	64 GB	16 GB
Max memory channels	2	2
Maximum memory bandwidth	37.5 GB/s	21.3 GB/s
ECC memory support	-	-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel HD Graphics 630	Intel® HD Graphics for 2nd Generation Intel® Processors
Max video memory	64 GB	no data
Quick Sync Video	+	-
Clear Video	+	no data
Clear Video HD	+	-
Graphics max frequency	1.1 GHz	1 GHz
InTru 3D	+	-

Graphics interfaces

Available interfaces and connections of Core i7-7820HQ and Celeron B840 integrated GPUs.

Number of displays supported	3	2
eDP	+	+
DisplayPort	+	+
HDMI	+	+
DVI	+	no data
SDVO	no data	+
CRT	no data	+

Graphics image quality

Maximum display resolutions supported by Core i7-7820HQ and Celeron B840 integrated GPUs, including resolutions over different interfaces.

4K resolution support	+	no data
Max resolution over HDMI 1.4	4096x2304@30Hz	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 i7-7820HQ and Celeron B840 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 i7-7820HQ and Celeron B840.

PCIe version	3.0	2.0
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.

Core i7-7820HQ outperforms Celeron B840 by 602% based on our aggregate benchmark results.

---

Pros & cons summary

---

Performance score	4.63	0.66
Recency	3 January 2017	1 July 2011
Physical cores	4	2
Threads	8	2
Cost	$378	$86
Chip lithography	14 nm	32 nm
Power consumption (TDP)	45 Watt	35 Watt

---

Should you still have questions on choice between Core i7-7820HQ and Celeron B840, 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.

---