Ryzen 9 9900X vs Celeron 877

Primary details

Comparing Celeron 877 and Ryzen 9 9900X processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	2961	110
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	no data	66.62
Market segment	Laptop	Desktop processor
Series	Intel Celeron	no data
Power efficiency	2.45	27.15
Architecture codename	Sandy Bridge (2011−2013)	Granite Ridge (2024)
Release date	1 July 2012 (12 years ago)	15 August 2024 (less than a year ago)
Launch price (MSRP)	$86	$499

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Celeron 877 and Ryzen 9 9900X 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	1.4 GHz	4.4 GHz
Boost clock speed	1.4 GHz	5.6 GHz
Bus type	DMI 2.0	no data
Bus rate	4 × 5 GT/s	no data
Multiplier	14	no data
L1 cache	64K (per core)	80 KB (per core)
L2 cache	256K (per core)	1 MB (per core)
L3 cache	2 MB (shared)	64 MB (shared)
Chip lithography	32 nm	4 nm
Die size	131 mm2	2x 70.6 mm2
Maximum core temperature	100 °C	95 °C
Number of transistors	504 million	16,630 million
64 bit support	+	+
Windows 11 compatibility	-	no data
Unlocked multiplier	-	+

Compatibility

Information on Celeron 877 and Ryzen 9 9900X 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	FCBGA1023	AM5
Power consumption (TDP)	17 Watt	120 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Celeron 877 and Ryzen 9 9900X. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2	SMT, AES, AVX, AVX2, AVX512, FMA3, MMX (+), SHA, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, SSE4A
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 877 and Ryzen 9 9900X 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 877 and Ryzen 9 9900X 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 877 and Ryzen 9 9900X. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR5
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 Compare	Intel HD Graphics for 2nd Generation Intel Processors	AMD Radeon Graphics
Graphics max frequency	1 GHz	no data

Graphics interfaces

Available interfaces and connections of Celeron 877 and Ryzen 9 9900X 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 877 and Ryzen 9 9900X.

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.

---

Pros & cons summary

---

Performance score	0.44	34.43
Integrated graphics card	0.77	1.98
Recency	1 July 2012	15 August 2024
Physical cores	2	12
Threads	2	24
Chip lithography	32 nm	4 nm
Power consumption (TDP)	17 Watt	120 Watt

---

Should you still have questions on choice between Celeron 877 and Ryzen 9 9900X, 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.

---