Ryzen 9 7900X vs Celeron B820

Place in the ranking	2873	123
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Desktop processor
Series	Intel Celeron	no data
Power efficiency	1.37	18.11
Architecture codename	Sandy Bridge (2011−2013)	Raphael (Zen4) (2022−2023)
Release date	1 July 2012 (12 years ago)	27 September 2022 (2 years ago)
Launch price (MSRP)	$86	no data

Detailed specifications

Celeron B820 and Ryzen 9 7900X 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)	12 (Dodeca-Core)
Threads	2	24
Base clock speed	1.7 GHz	4.7 GHz
Boost clock speed	1.7 GHz	5.6 GHz
Bus type	DMI 2.0	no data
Bus rate	4 × 5 GT/s	no data
Multiplier	17	no data
L1 cache	64K (per core)	64K (per core)
L2 cache	256K (per core)	1 MB (per core)
L3 cache	2 MB (shared)	64 MB (shared)
Chip lithography	32 nm	5 nm
Die size	131 mm²	2x 70 (CCD) mm² + 122 (I/O) mm²
Maximum core temperature	100 °C	95 °C
Maximum case temperature (TCase)	no data	47 °C
Number of transistors	504 million	CCD: 6,5 Mrd + IOD: 3,4 Mrd Million
64 bit support	+	+
Windows 11 compatibility	-	+
Unlocked multiplier	-	+

Compatibility

Information on Celeron B820 and Ryzen 9 7900X 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
Socket	FCPGA988,PGA988	AM5
Power consumption (TDP)	35 Watt	170 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Celeron B820 and Ryzen 9 7900X. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2	5 nm (CCD), 6 nm (I/O) nm, 0.650 - 1.475V
AES-NI	-	+
FMA	+	-
AVX	-	+
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	+	-
Flex Memory Access	+	no data
Demand Based Switching	-	no data
FDI	+	no data
Fast Memory Access	+	no data
Precision Boost 2	no data	+

Security technologies

Celeron B820 and Ryzen 9 7900X 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 B820 and Ryzen 9 7900X are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Celeron B820 and Ryzen 9 7900X. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR5-5200
Maximum memory size	16 GB	no data
Max memory channels	2	no data
Maximum memory bandwidth	21.335 GB/s	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel® HD Graphics for 2nd Generation Intel® Processors	AMD Radeon Graphics (Ryzen 7000)
Graphics max frequency	1.05 GHz	no data

Graphics interfaces

Available interfaces and connections of Celeron B820 and Ryzen 9 7900X integrated GPUs.

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

Peripherals

Specifications and connection of peripherals supported by Celeron B820 and Ryzen 9 7900X.

PCIe version	2.0	5.0
PCI Express lanes	16	24

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 B820 0.51

Ryzen 9 7900X 32.67
+6306%

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.

Celeron B820 802

Ryzen 9 7900X 51700
+6346%

GeekBench 5 Single-Core

GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.

Celeron B820 280

Ryzen 9 7900X 2956
+956%

GeekBench 5 Multi-Core

GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.

Celeron B820 492

Ryzen 9 7900X 17955
+3549%

Gaming performance

Pros & cons summary

Performance score	0.51	32.67
Recency	1 July 2012	27 September 2022
Physical cores	2	12
Threads	2	24
Chip lithography	32 nm	5 nm
Power consumption (TDP)	35 Watt	170 Watt

Celeron B820 has 385.7% lower power consumption.

Ryzen 9 7900X, on the other hand, has a 6305.9% higher aggregate performance score, an age advantage of 10 years, 500% more physical cores and 1100% more threads, and a 540% more advanced lithography process.

The Ryzen 9 7900X is our recommended choice as it beats the Celeron B820 in performance tests.

Be aware that Celeron B820 is a notebook processor while Ryzen 9 7900X is a desktop one.

Should you still have questions on choice between Celeron B820 and Ryzen 9 7900X, ask them in Comments section, and we shall answer.