Athlon 64 X2 3800+ vs Phenom II X4 840

VS

Aggregate performance score

Phenom II X4 840
2011
4 cores / 4 threads, 95 Watt
1.52
+280%
Athlon 64 X2 3800+
2005
2 cores / 2 threads, 89 Watt
0.40

Phenom II X4 840 outperforms Athlon 64 X2 3800+ by a whopping 280% based on our aggregate benchmark results.

Primary details

Comparing Phenom II X4 840 and Athlon 64 X2 3800+ processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking21443013
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation3.08no data
Market segmentDesktop processorDesktop processor
Power efficiency1.510.43
Architecture codenamePropus (2009−2011)Manchester (2005−2006)
Release date4 January 2011 (13 years ago)August 2005 (19 years ago)
Launch price (MSRP)$90no data

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Phenom II X4 840 and Athlon 64 X2 3800+ 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)2 (Dual-core)
Threads42
Base clock speed3.2 GHzno data
Boost clock speed3.2 GHz2 GHz
L1 cache128 KB (per core)256K
L2 cache512 KB (per core)512 KB
L3 cache0 KB0 KB
Chip lithography45 nm90 nm
Die size169 mm2220 mm2
Number of transistors300 million154 million
64 bit support++
Windows 11 compatibility--

Compatibility

Information on Phenom II X4 840 and Athlon 64 X2 3800+ 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
SocketAM3939
Power consumption (TDP)95 Watt89 Watt

Memory specs

Types, maximum amount and channel quantity of RAM supported by Phenom II X4 840 and Athlon 64 X2 3800+. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR3no data

Peripherals

Specifications and connection of peripherals supported by Phenom II X4 840 and Athlon 64 X2 3800+.

PCIe version2.0no 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.

Phenom II X4 840 1.52
+280%
Athlon 64 X2 3800+ 0.40

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
+284%
Athlon 64 X2 3800+ 629

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
+63.5%
Athlon 64 X2 3800+ 203

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
+150%
Athlon 64 X2 3800+ 376

Gaming performance

Pros & cons summary


Performance score 1.52 0.40
Physical cores 4 2
Threads 4 2
Chip lithography 45 nm 90 nm
Power consumption (TDP) 95 Watt 89 Watt

Phenom II X4 840 has a 280% higher aggregate performance score, 100% more physical cores and 100% more threads, and a 100% more advanced lithography process.

Athlon 64 X2 3800+, on the other hand, has 6.7% lower power consumption.

The Phenom II X4 840 is our recommended choice as it beats the Athlon 64 X2 3800+ in performance tests.


Should you still have questions on choice between Phenom II X4 840 and Athlon 64 X2 3800+, ask them in Comments section, and we shall answer.

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AMD Phenom II X4 840
Phenom II X4 840
AMD Athlon 64 X2 3800+
Athlon 64 X2 3800+

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Community ratings

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Questions & comments

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