When we set out to create this resource, AMD's FX family of desktop CPUs was still based on Zambezi, which employs the company's Bulldozer architecture. Of course, as we all know now, the Piledriver-based Vishera parts are available, and have been since late October. Worry not; we are in the process of running several more processors based on Piledriver through the same suite of benchmarks, and will be updating the charts soon. If you want to take a look at how the FX-8350, specifically, sizes up to seven other CPUs (including a number of the chips tested in this story), have a look at AMD FX-8350 Review: Does Piledriver Fix Bulldozer's Flaws?
Regardless of whether you're looking at a Bulldozer- or Piledriver-based chip, though, All FX CPUs are manufactured at 32 nm. They all drop into the Socket AM3+ interface. And they all include between 4 and 8 MB of shared L3 cache.
Naming of the older FX processors is pretty straightforward: FX-41xx comes with two active modules, totaling four integer cores; FX-61xx-series chips employ three modules, comprised of six integer cores; and the FX-81xx family features four modules, for eight integer cores. Piledriver updates these to FX-43xx, FX-63xx, and FX-83xx.
Notice the distinction between modules and cores. Bulldozer is different from more traditional designs in that it only duplicates resources where necessary. So, one module has two integer clusters, but shares a floating-point unit, decoder, and L2 cache. The idea is to balance complexity and performance, achieving better parallelism at any given power level or transistor count.
- AMD's Bulldozer Architecture: Overclocking Efficiency Explored
- AMD FX: Energy Efficiency Compared To Eight Other CPUs
- AMD Bulldozer Review: FX-8150 Gets Tested
Benchmarked AMD Bulldozer CPUs:
|FX||Code Name||Rev.||CPU Socket||Number of Cores||Clock Frequency||L2 Cache||L3 Cache||Memory Controller||TDP|
|FX-4100||Bulldozer||B2||AM3+||4||3.6 GHz||2 x 2048 KB||8 MB||integrated up to DDR3-1866||95 W|
|FX-4170||Bulldozer||B2||AM3+||4||4.2 GHz||2 x 2048 KB||8 MB||integrated up to DDR3-1866||125 W|
|FX-6100||Bulldozer||B2||AM3+||6||3.3 GHz||2 x 2048 KB||8 MB||integrated up to DDR3-1866||95 W|
|FX-6200||Bulldozer||B2||AM3+||6||3.8 GHz||3 x 2048 KB||8 MB||integrated up to DDR3-1866||125 W|
|FX-8100||Bulldozer||B2||AM3+||8||2.8 GHz||3 x 2048 KB||8 MB||integrated up to DDR3-1866||95 W|
|FX-8120||Bulldozer||B2||AM3+||8||3.1 GHz||4 x 2048 KB||8 MB||integrated up to DDR3-1866||95 W|
|FX-8140||Bulldozer||B3||AM3+||8||3.2 GHz||4 x 2048 KB||8 MB||integrated up to DDR3-1866||95 W|
|FX-8150||Bulldozer||B2||AM3+||8||3.6 GHz||4 x 2048 KB||8 MB||integrated up to DDR3-1866||125 W|
|FX-8170||Bulldozer||B3||AM3+||8||3.9 GHz||4 x 2048 KB||8 MB||integrated up to DDR3-1866||125 W|