Phenom X4 9950 BE (125W) vs Athlon 64 X2 4000+

VS

Primary details

Comparing Athlon 64 X2 4000+ and Phenom X4 9950 BE (125W) processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking2962not rated
Place by popularitynot in top-100not in top-100
Market segmentDesktop processorDesktop processor
Power efficiency0.47no data
Architecture codenameWindsor (2006−2007)Agena (2007−2008)
Release dateMay 2006 (18 years ago)October 2008 (16 years ago)

Detailed specifications

Athlon 64 X2 4000+ and Phenom X4 9950 BE (125W) 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 cores2 (Dual-core)4 (Quad-Core)
Threads24
Boost clock speed2 GHz2.6 GHz
L1 cache256 KB128 KB (per core)
L2 cache512K512 KB (per core)
L3 cache0 KB2 MB (shared)
Chip lithography90 nm65 nm
Die size220 mm2285 mm2
Number of transistors154 million450 million
64 bit support++
Windows 11 compatibility--
Unlocked multiplier-+

Compatibility

Information on Athlon 64 X2 4000+ and Phenom X4 9950 BE (125W) 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
SocketAM2AM2+
Power consumption (TDP)89 Watt125 Watt

Virtualization technologies

Virtual machine speed-up technologies supported by Athlon 64 X2 4000+ and Phenom X4 9950 BE (125W) are enumerated here.

AMD-V-+

Pros & cons summary


Physical cores 2 4
Threads 2 4
Chip lithography 90 nm 65 nm
Power consumption (TDP) 89 Watt 125 Watt

Athlon 64 X2 4000+ has 40.4% lower power consumption.

Phenom X4 9950 BE (125W), on the other hand, has 100% more physical cores and 100% more threads, and a 38.5% more advanced lithography process.

We couldn't decide between Athlon 64 X2 4000+ and Phenom X4 9950 BE (125W). We've got no test results to judge.


Should you still have questions on choice between Athlon 64 X2 4000+ and Phenom X4 9950 BE (125W), 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.


AMD Athlon 64 X2 4000+
Athlon 64 X2 4000+
AMD Phenom X4 9950 BE (125W)
Phenom X4 9950 BE (125W)

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.


3.1 191 vote

Rate Athlon 64 X2 4000 on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5
3.4 51 vote

Rate Phenom X4 9950 BE (125W) on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5

Questions & comments

Here you can ask a question about Athlon 64 X2 4000+ or Phenom X4 9950 BE (125W), agree or disagree with our judgements, or report an error or mismatch.