Ryzen 7 5800X vs Phenom II X4 840

VS

Aggregate performance score

Phenom II X4 840
2011
4 cores / 4 threads, 95 Watt
1.52
Ryzen 7 5800X
2020
8 cores / 16 threads, 105 Watt
17.52
+1053%

Ryzen 7 5800X outperforms Phenom II X4 840 by a whopping 1053% based on our aggregate benchmark results.

Primary details

Comparing Phenom II X4 840 and Ryzen 7 5800X processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking2144361
Place by popularitynot in top-10049
Cost-effectiveness evaluation3.0824.49
Market segmentDesktop processorDesktop processor
Seriesno dataAMD Ryzen 7
Power efficiency1.5115.79
Architecture codenamePropus (2009−2011)Vermeer (Zen 3) (2020−2022)
Release date4 January 2011 (13 years ago)5 November 2020 (4 years ago)
Launch price (MSRP)$90$449

Cost-effectiveness evaluation

Performance per price, higher is better.

Ryzen 7 5800X has 695% better value for money than Phenom II X4 840.

Detailed specifications

Phenom II X4 840 and Ryzen 7 5800X 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 cores4 (Quad-Core)8 (Octa-Core)
Threads416
Base clock speed3.2 GHz3.8 GHz
Boost clock speed3.2 GHz4.7 GHz
Multiplierno data38
L1 cache128 KB (per core)64K (per core)
L2 cache512 KB (per core)512K (per core)
L3 cache0 KB32 MB
Chip lithography45 nm7 nm, 12 nm
Die size169 mm22 x 80.7 sq. mm; I/O = 125 mm2
Maximum core temperatureno data90 °C
Maximum case temperature (TCase)no data95 °C
Number of transistors300 millionno data
64 bit support++
Windows 11 compatibility-+
Unlocked multiplier-+

Compatibility

Information on Phenom II X4 840 and Ryzen 7 5800X 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 configuration11
SocketAM3AM4
Power consumption (TDP)95 Watt105 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Phenom II X4 840 and Ryzen 7 5800X. You'll probably need this information if you require some particular technology.

Instruction set extensionsno dataMMX (+), SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, SSE4A, AES, AVX, AVX2, FMA3, SHA
AES-NI-+
AVX-+
Precision Boost 2no data+

Virtualization technologies

Virtual machine speed-up technologies supported by Phenom II X4 840 and Ryzen 7 5800X are enumerated here.

AMD-V-+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Phenom II X4 840 and Ryzen 7 5800X. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR3DDR4
Maximum memory sizeno data128 GB
Max memory channelsno data2
Maximum memory bandwidthno data51.196 GB/s

Peripherals

Specifications and connection of peripherals supported by Phenom II X4 840 and Ryzen 7 5800X.

PCIe version2.04.0

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.

Phenom II X4 840 1.52
Ryzen 7 5800X 17.52
+1053%

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.

Phenom II X4 840 2417
Ryzen 7 5800X 27829
+1051%

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.

Phenom II X4 840 332
Ryzen 7 5800X 2199
+562%

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.

Phenom II X4 840 941
Ryzen 7 5800X 10251
+989%

Gaming performance

Pros & cons summary


Performance score 1.52 17.52
Recency 4 January 2011 5 November 2020
Physical cores 4 8
Threads 4 16
Chip lithography 45 nm 7 nm
Power consumption (TDP) 95 Watt 105 Watt

Phenom II X4 840 has 10.5% lower power consumption.

Ryzen 7 5800X, on the other hand, has a 1052.6% higher aggregate performance score, an age advantage of 9 years, 100% more physical cores and 300% more threads, and a 542.9% more advanced lithography process.

The Ryzen 7 5800X is our recommended choice as it beats the Phenom II X4 840 in performance tests.


Should you still have questions on choice between Phenom II X4 840 and Ryzen 7 5800X, ask them in Comments section, and we shall answer.

Vote for your favorite

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AMD Phenom II X4 840
Phenom II X4 840
AMD Ryzen 7 5800X
Ryzen 7 5800X

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Community ratings

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Questions & comments

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