Ryzen 7 3800X vs i3-2105

Place in the ranking	2365	487
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.10	15.87
Market segment	Desktop processor	Desktop processor
Series	no data	AMD Ryzen 7
Power efficiency	1.69	13.13
Architecture codename	Sandy Bridge (2011−2013)	Matisse (2019−2020)
Release date	22 May 2011 (13 years ago)	7 July 2019 (5 years ago)
Launch price (MSRP)	$145	$399

Cost-effectiveness evaluation

Performance per price, higher is better.

Ryzen 7 3800X has 15770% better value for money than i3-2105.

Detailed specifications

Core i3-2105 and Ryzen 7 3800X 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)	8 (Octa-Core)
Threads	4	16
Base clock speed	3.1 GHz	3.9 GHz
Boost clock speed	3.1 GHz	4.5 GHz
Bus rate	5 GT/s	no data
L1 cache	64 KB (per core)	96K (per core)
L2 cache	256 KB (per core)	512K (per core)
L3 cache	3 MB (shared)	32 MB
Chip lithography	32 nm	7 nm, 12 nm
Maximum core temperature	69 °C	no data
Number of transistors	no data	19,200 million
64 bit support	+	+
Windows 11 compatibility	-	+
Unlocked multiplier	-	+

Compatibility

Information on Core i3-2105 and Ryzen 7 3800X 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 (Uniprocessor)
Socket	FCLGA1155	AM4
Power consumption (TDP)	65 Watt	105 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i3-2105 and Ryzen 7 3800X. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX	no data
AES-NI	-	+
AVX	-	+
Enhanced SpeedStep (EIST)	+	no data
Turbo Boost Technology	-	no data
Hyper-Threading Technology	+	no data
Idle States	+	no data
Thermal Monitoring	+	-
Flex Memory Access	+	no data
FDI	+	no data
Fast Memory Access	+	no data
Precision Boost 2	no data	+

Security technologies

Core i3-2105 and Ryzen 7 3800X technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	no data
EDB	+	no data
Identity Protection	+	-

Virtualization technologies

Virtual machine speed-up technologies supported by Core i3-2105 and Ryzen 7 3800X are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i3-2105 and Ryzen 7 3800X. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR4 Dual-channel
Maximum memory size	32 GB	128 GB
Max memory channels	2	2
Maximum memory bandwidth	21 GB/s	51.196 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel HD Graphics 3000	-
Quick Sync Video	+	-
Clear Video HD	+	-
Graphics max frequency	1.1 GHz	-
InTru 3D	+	-

Graphics interfaces

Available interfaces and connections of Core i3-2105 and Ryzen 7 3800X integrated GPUs.

Number of displays supported

Peripherals

Specifications and connection of peripherals supported by Core i3-2105 and Ryzen 7 3800X.

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.

i3-2105 1.16

Ryzen 7 3800X 14.57
+1156%

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.

i3-2105 1846

Ryzen 7 3800X 23140
+1154%

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.

i3-2105 482

Ryzen 7 3800X 1702
+253%

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.

i3-2105 983

Ryzen 7 3800X 8226
+737%

Gaming performance

Pros & cons summary

Performance score	1.16	14.57
Recency	22 May 2011	7 July 2019
Physical cores	2	8
Threads	4	16
Chip lithography	32 nm	7 nm
Power consumption (TDP)	65 Watt	105 Watt

i3-2105 has 61.5% lower power consumption.

Ryzen 7 3800X, on the other hand, has a 1156% higher aggregate performance score, an age advantage of 8 years, 300% more physical cores and 300% more threads, and a 357.1% more advanced lithography process.

The Ryzen 7 3800X is our recommended choice as it beats the Core i3-2105 in performance tests.

Should you still have questions on choice between Core i3-2105 and Ryzen 7 3800X, ask them in Comments section, and we shall answer.