AMD FX

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AMD FX
An AMD FX 8310
General information
LaunchedMarch 2011
Marketed byAMD
Designed byAMD
Common manufacturer(s)
Performance
Max. CPU clock rate2.1 GHz to 5.0 GHz
Architecture and classification
Technology node32 nm to 28 nm
MicroarchitectureBulldozer, Piledriver
Instruction setAMD64/x86-64, MMX(+), SSE1, 2, 3, 3s, 4.1, 4.2, 4a, AES, CLMUL, AVX, XOP, FMA3, FMA4, CVT16/F16C, BMI1, ABM, TBM, AMD-V
Physical specifications
Cores
  • 4, 6, 8
Socket(s)
Products, models, variants
Core name(s)
  • Zambezi
  • Vishera
History
Predecessor(s)Phenom II
Successor(s)Ryzen

AMD FX is a series of high-end AMD microprocessors for personal computers which debuted in 2011, claimed as AMD's first native 8-core desktop processor.[1] The line was introduced with the Bulldozer microarchitecture at launch (codenamed "Zambezi"), and was then succeeded by its derivative Piledriver in 2012 (codenamed "Vishera").

The line aimed at competing with the Intel Core line of desktop processors, in particular processors based on Sandy Bridge and Ivy Bridge architectures.[2][3]

FX has been succeeded by the Ryzen brand of CPUs, based on the Zen architecture, which initially launched in 2017 to compete with Intel's later generation processors such as Skylake.[4]

History[edit]

Prior to FX Launch[edit]

In the years prior to the AMD FX range of processors, the AMD Phenom II and Athlon II lineup of processors, while not beating Intel's Core lineup in raw performance, were generally competitive when their price was taken into account.[5][6] By the end of Phenom's lifespan, however, Intel's Sandy Bridge-based Core processors could provide performance that Phenom II could not compete with.[7] Rumors suggested that the FX line would change that as leaked information suggested improved performance on the upcoming Bulldozer architecture that AMD FX was based on.[8]

FX Launch[edit]

See also: List of AMD FX processors

The FX series launched on October 12, 2011, on the Bulldozer architecture. The launch lineup included the 4 core FX-4100 at $115,[9] the 6 core FX-6100 at $165,[10] and the 8 core FX-8120 at $205[11] and FX-8150 at $185.[11][12] The FX refresh on the Piledriver architecture launched on October 23, 2012. The launch lineup included the refreshed 4 core FX-4300 at $122, 6 core FX-6300 at $132, and 8 core FX-8320 at $169 and FX-8350 at $195.[13][14]

Features[edit]

One notable feature of the AMD FX microprocessors is that they were all unlocked and overclockable, a feature usually reserved for the high-end K suffix SKUs from Intel. This allowed users to gain extra performance by raising the clock speed of their CPU.[15] The personal world record for highest overclock was achieved on an FX-8350, which was clocked up to 8794.33 MHz.[16]

  • 4× dual-core "modules" within FX-8 series, 3× in FX-6 series, and 2× in FX-4 series, with two integer clusters (seen as logical cores from OS) and a shared floating-point unit in each "module".
  • All models manufactured from 8 logical cores with simple Orochi die production, in 938 pins μPGA package AM3+ socket.
  • All models support up to 4 DIMMs of DDR3 memory.

Unlike the majority of their Intel counterparts, FX chips offered no integrated graphics, a feature reserved for AMD's APU line of processors. Both Zambezi and Vishera used a module design containing two cores on one module.

Reception[edit]

Upon launch, the FX series was met with criticism from reviewers.[17] Due to multiple cores sharing common resources, most tasks were substantially slower on the FX lineup than the Intel Sandy Bridge equivalent. In many single-threaded applications, it was worse than the previous generation of Phenom II microprocessors.[17] The power consumption of the lineup, while not as poor as the Phenom II generation, was still worse than what Intel was providing at the time.[17] The Piledriver-based FX refresh in 2012 generally improved performance across the board by increasing clock speeds at similar power consumption levels,[18] but Intel's Ivy Bridge architecture was available and provided much better performance per watt and total performance to consumers.[19] With AMD only being responsible for 20% of consumer CPU sales in 2016,[20] Intel continued to gain market share in the industry during the lifespan of the FX series.[21]

Performance[edit]

The AMD FX line-up generally performed worse than its Intel competitors during its lifespan. The floating-point performance was relatively poor due to a single shared FPU per module. Most games also could not take advantage of the high core counts that the series provided. In applications that benefitted from more threads, AMD SKUs typically pulled ahead. This came at a great cost, however, as thermal efficiency was often worse than the previous generation of processors.[22] Updates to the architecture that came with the Piledriver revision allowed for higher clock speeds. This led to better performance, but that came with the cost of even higher thermal output on the high end, which can be seen with the FX-9590, with its TDP rating of 220 watts.[23]

Controversy[edit]

In 2015, AMD was accused of falsely advertising the core count of its FX lineup. The claim stated that because the FX series' cores shared common resources such as the FPU, AMD was falsely advertising its high core counts.[24] The company had to pay out $12.1 million to California residents who bought a high-end FX chip.[25]

Notes[edit]

  • AMD later re-used the FX designation for some processors in its socket FM2/FM2+ APU lineup.

See also[edit]

References[edit]

  1. ^ "AMD FX Processors". AMD FX Processors. Advanced Micro Devices, Inc. Archived from the original on 2015-09-12. Retrieved 12 September 2015.
  2. ^ Hruska, Joel (4 November 2013). "AMD vs. Intel, the ultimate gaming showdown: 5GHz FX-9590 vs. i7-4960X". extremetech.com. Retrieved 5 December 2016.
  3. ^ "AMD Ships First "Bulldozer" Processors". Retrieved 2016-12-05.
  4. ^ "AMD's Ryzen launches March 2, outperforming Intel's Core i7 at a fraction of the price". PCWorld. Retrieved 2017-08-12.
  5. ^ Shimpi, Anand Lal. "AMD's Six-Core Phenom II X6 1090T & 1055T Reviewed". www.anandtech.com. Retrieved 2020-10-24.
  6. ^ Shimpi, Anand Lal. "AMD Phenom II X4 940 & 920: A True Return to Competition". www.anandtech.com. Retrieved 2020-10-24.
  7. ^ Shimpi, Anand Lal. "The Sandy Bridge Review: Intel Core i7-2600K, i5-2500K and Core i3-2100 Tested". www.anandtech.com. Retrieved 2020-11-14.
  8. ^ Portnoy, Sean. "Performance info leaks about AMD's upcoming FX desktop CPUs, Llano APUs". ZDNet. Retrieved 2020-10-24.
  9. ^ "AMD FX-Series FX-4100 - FD4100WMW4KGU / FD4100WMGUSBX". www.cpu-world.com. Retrieved 2020-11-15.
  10. ^ "AMD FX-Series FX-6100 - FD6100WMW6KGU / FD6100WMGUSBX". www.cpu-world.com. Retrieved 2020-11-15.
  11. ^ a b "AMD adds a pair of new FX-series chips". The Tech Report. 2012-02-27. Retrieved 2020-11-15.
  12. ^ "AMD FX-Series FX-8150 - FD8150FRW8KGU / FD8150FRGUBOX / FD8150FRGUWOX". www.cpu-world.com. Retrieved 2020-11-14.
  13. ^ "AMD launches Piledriver-powered FX processors | bit-tech.net". bit-tech.net. Retrieved 2020-11-15.
  14. ^ Mujtaba, Hassan (2012-10-23). "AMD FX-8350 Officially Priced at $195 US". Wccftech. Retrieved 2020-11-15.
  15. ^ Torres, Gabriel (2 October 2013). "All AMD FX CPU Models". hardwaresecrets.com. Retrieved 6 December 2016.
  16. ^ "CPU-Z Validator - World Records". valid.x86.fr. Retrieved 7 April 2019.
  17. ^ a b c Shimpi, Anand Lal. "The Bulldozer Review: AMD FX-8150 Tested". www.anandtech.com. Retrieved 2020-10-24.
  18. ^ "AMD's FX-8350 analyzed: Does Piledriver deliver where Bulldozer fell short? - ExtremeTech". www.extremetech.com. Retrieved 2020-10-24.
  19. ^ "AMD FX-8350 and FX-6300 Piledriver Review". TechSpot. 23 October 2012. Retrieved 2020-11-14.
  20. ^ Burke, Steve. "GN Special Report: Intel vs. AMD Volume - AMD Moves 93% of CPU Sales to GN Readers". www.gamersnexus.net. Retrieved 2020-11-14.
  21. ^ "Intel/AMD x86 computer CPU market share 2012-2020". Statista. Retrieved 2020-11-14.
  22. ^ Schmid, Patrick; October 2011, Achim Roos 27 (27 October 2011). "AMD FX: Energy Efficiency Compared To Eight Other CPUs". Tom's Hardware. Retrieved 2020-10-24.{{cite web}}: CS1 maint: numeric names: authors list (link)
  23. ^ "AMD FX-9590 Review". PCMAG. Retrieved 2020-10-24.
  24. ^ "Important Documents | AMD". www.amdcpusettlement.com. Retrieved 2020-10-24.
  25. ^ Gartenberg, Chaim (2019-08-28). "AMD to pay out $12.1 million in false advertising class action suit over Bulldozer chips". The Verge. Retrieved 2020-10-24.

External links[edit]

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