A4-9120C vs Celeron B840

General info

Comparing Celeron B840 and A4-9120C processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	2605	2707
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Laptop
Series	Intel Celeron	AMD Bristol Ridge
Architecture codename	Sandy Bridge (2011−2013)	Stoney Ridge (2016−2019)
Release date	1 July 2011 (12 years ago)	6 January 2019 (5 years ago)
Launch price (MSRP)	$86	no data
Current price	$133 (1.5x MSRP)	$290

Technical specs

Celeron B840 and A4-9120C 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	2 (Dual-core)	2 (Dual-core)
Threads	2	2
Base clock speed	1.9 GHz	1.6 GHz
Boost clock speed	1.9 GHz	2.4 GHz
L1 cache	64K (per core)	160 KB
L2 cache	256K (per core)	1 MB
L3 cache	2 MB (shared)	no data
Chip lithography	32 nm	28 nm
Die size	131 mm2	124.5 mm2
Maximum core temperature	100 °C	no data
Number of transistors	504 million	1200 Million
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	No	No

Compatibility

Information on Celeron B840 and A4-9120C 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	no data
Socket	FCPGA988,PGA988	BGA
Power consumption (TDP)	35 Watt	6 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Celeron B840 and A4-9120C. You'll probably need this information if you require some particular technology.

Instruction set extensions	no data	Single-Channel DDR4-2133, Virtualization,
AES-NI	-	no data
FMA	+	no data
Enhanced SpeedStep (EIST)	+	no data
My WiFi	+	no data
Turbo Boost Technology	-	no data
Hyper-Threading Technology	-	no data
Idle States	+	no data
Thermal Monitoring	+	no data
Flex Memory Access	+	no data
Demand Based Switching	-	no data
FDI	+	no data
Fast Memory Access	+	no data
Status	Discontinued	no data

Security technologies

Celeron B840 and A4-9120C technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	no data
EDB	+	no data
Anti-Theft	-	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Celeron B840 and A4-9120C are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Celeron B840 and A4-9120C. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR4
Maximum memory size	16 GB	no data
Max memory channels	2	no data
Maximum memory bandwidth	21.3 GB/s	no data
ECC memory support	-	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel® HD Graphics for 2nd Generation Intel® Processors	AMD Radeon R4 (Stoney Ridge)
Graphics max frequency	1 GHz	no data

Graphics interfaces

Available interfaces and connections of Celeron B840 and A4-9120C integrated GPUs.

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

Peripherals

Specifications and connection of peripherals supported by Celeron B840 and A4-9120C.

PCIe version	2.0	no data
PCI Express lanes	16	no 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.

Celeron B840 outperforms A4-9120C by 22% based on our aggregated benchmark results.

---

Advantages and disadvantages

---

Performance score	0.66	0.54
Recency	1 July 2011	6 January 2019
Chip lithography	32 nm	28 nm
Power consumption (TDP)	35 Watt	6 Watt

---

Should you still have questions on choice between Celeron B840 and A4-9120C, ask them in Comments section, and we shall answer.

Vote

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

---