Phenom II X4 840 vs Xeon E5440

Aggregate performance score

Xeon E5440
2008
80 Watt
1.55
Phenom II X4 840
2011
4 cores / 4 threads, 95 Watt
1.57
+1.3%

Phenom II X4 840 outperforms Xeon E5440 by a minimal 1% based on our aggregate benchmark results.

Primary details

Comparing Xeon E5440 and Phenom II X4 840 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking21392127
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluationno data3.08
Market segmentServerDesktop processor
Power efficiency1.771.51
Architecture codenameno dataPropus (2009−2011)
Release date1 January 2008 (16 years ago)4 January 2011 (13 years ago)
Launch price (MSRP)no data$90

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Xeon E5440 and Phenom II X4 840 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 coresno data4 (Quad-Core)
Threadsno data4
Base clock speed2.83 GHz3.2 GHz
Boost clock speedno data3.2 GHz
L1 cacheno data128 KB (per core)
L2 cacheno data512 KB (per core)
L3 cache12 MB L2 Cache0 KB
Chip lithography45 nm45 nm
Die sizeno data169 mm2
Maximum core temperature67 °Cno data
Number of transistorsno data300 million
64 bit support++
Windows 11 compatibility--
VID voltage range0.85V-1.35Vno data

Compatibility

Information on Xeon E5440 and Phenom II X4 840 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 configurationno data1
SocketLGA771AM3
Power consumption (TDP)80 Watt95 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Xeon E5440 and Phenom II X4 840. You'll probably need this information if you require some particular technology.

Enhanced SpeedStep (EIST)+no data
Turbo Boost Technology-no data
Hyper-Threading Technology-no data
Idle States+no data
Thermal Monitoring+-
Demand Based Switching+no data
FSB parity+no data

Security technologies

Xeon E5440 and Phenom II X4 840 technologies aimed at improving security, for example, by protecting against hacks.

TXT-no data
EDB+no data

Virtualization technologies

Virtual machine speed-up technologies supported by Xeon E5440 and Phenom II X4 840 are enumerated here.

VT-x+no data
EPT-no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Xeon E5440 and Phenom II X4 840. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesno dataDDR3

Peripherals

Specifications and connection of peripherals supported by Xeon E5440 and Phenom II X4 840.

PCIe versionno data2.0

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.

Xeon E5440 1.55
Phenom II X4 840 1.57
+1.3%

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.

Xeon E5440 2374
Phenom II X4 840 2410
+1.5%

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.

Xeon E5440 368
+10.8%
Phenom II X4 840 332

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.

Xeon E5440 1036
+10.1%
Phenom II X4 840 941

Gaming performance

Pros & cons summary


Performance score 1.55 1.57
Recency 1 January 2008 4 January 2011
Power consumption (TDP) 80 Watt 95 Watt

Xeon E5440 has 18.8% lower power consumption.

Phenom II X4 840, on the other hand, has a 1.3% higher aggregate performance score, and an age advantage of 3 years.

Given the minimal performance differences, no clear winner can be declared between Xeon E5440 and Phenom II X4 840.

Be aware that Xeon E5440 is a server/workstation processor while Phenom II X4 840 is a desktop one.


Should you still have questions on choice between Xeon E5440 and Phenom II X4 840, 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.


Intel Xeon E5440
Xeon E5440
AMD Phenom II X4 840
Phenom II X4 840

Similar processor comparisons

We picked several similar comparisons of processors in the same market segment and performance relatively close to those reviewed on this page.

Community ratings

Here you can see how users rate the processors, as well as rate them yourself.


4 479 votes

Rate Xeon E5440 on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5
3.9 248 votes

Rate Phenom II X4 840 on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5

Questions & comments

Here you can ask a question about Xeon E5440 or Phenom II X4 840, agree or disagree with our judgements, or report an error or mismatch.