Overclocking

AMD's FX architecture was designed for very high clock speeds. With Piledriver we're able to see some of that expressed in overclocking headroom. All of these chips should be good for close to 5GHz depending on your luck of the draw and cooling. For all of these overclocking tests I used AMD's branded closed loop liquid cooler which debuted back with the original FX launch. I didn't have enough time to go through every chip so I picked the FX-8350 and FX-4300 to show the range of overclocks that may be possible. In my case the FX-4300 hit 5GHz with minimal effort, while the FX-8350 topped out at 4.8GHz (I could hit 5GHz but it wasn't stable through all of our tests). Both of these overclocks were achieved with no more than 10% additional core voltage and by simple multiplier adjustments (hooray for unlocked everything). The increase in performance is substantial:

Windows 8 - x264 HD 5.0.1 - 1st Pass

Windows 8 - x264 HD 5.0.1 - 2nd Pass

The increase in power consumption is pretty bad however, you do pay for these types of voltage driven overclocks:

Power Consumption - Load (x264 HD 5.0.1)

The 5GHz FX-4300 is pushed into FX-8300 territory, while the 4.8GHz 8350 is in a league of its own at just under 300W of total system power consumption.

Projected Performance: Can AMD Catch up with Intel? Final Words
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  • CeriseCogburn - Tuesday, October 30, 2012 - link

    LOL - seems like... hahahahhahahah in some imaginary future in a far off land, if and when and only if amd does xxxx and yyyyyy and blah blah blah blah,.... blew it.
  • g101 - Wednesday, November 21, 2012 - link

    More extreme ignorance from the idiot CeriseCogburn. Little boys who only game should seriously consider not commenting on things they aren't capable of comprehending.

    Stupid little bitchboy CeriseCogburn...What a waste of oxygen.
  • DDR4 - Wednesday, November 7, 2012 - link

    nice to see AMD make better procs and lower their prices
  • andrewkoch - Friday, November 9, 2012 - link

    If you live in an area that requires A/C most of the year like me, the true cost of owning a FX8350 processor is about an additional $100 year vs. owing a 3570k.
    Fx8350 +15 watts idle +95 watts load vs. i5 3570k
    50 hours week light cpu usage = 75W
    10 hours week heavy cpu usage = 760w
    Combined usage = 1025w @$0.11 Kw/h = $1.12
    A/C usage 75%-80% @$0.11 Kw/h = $.84
    Extra electrical cost $2/week
    Extra electrical cost $100/yearly or $300/3 years

    Maybe my math is wrong, but if you use A/C most of the year and pay for electricity an AMD cpu is a waste of money. Then again some people still use incandescent light bulbs instead of compact fluorescent lamps or LED bulbs.
  • andrewkoch - Saturday, November 10, 2012 - link

    LoL my math was wrong in the above post.
    Fx8350 +15 watts idle +95 watts load vs. i5 3570k

    68 hours week light cpu usage = 1kW
    100 hours week heavy cpu usage = 9.5w
    Combined weekly usage = 10.5kw @$0.11 Kw/h = $01.15
    Average A/C usage 80%*$1.15 @$0.11 Kw/h = $.0.92
    Extra electrical cost $2/week vs. owing a 3570k
    Extra electrical cost $100/yearly or $300/3 years vs. owing a 3570k
    In this usage scenario the computer is heavily used for tasks like folding, gaming or video editing
  • criter - Saturday, November 17, 2012 - link

    121117
    Intel is a semiconductor company first; and a microprocessor company second ($13.5B revenue [#3.8B quarter])
    used to make a living making memory chips (dram) until they became commoditized by Japanese rivals in the 1980s and margins plunged, now volume produced microprocessors happen to be the most profitable;
    makes more useable chips per $5B-300mm & $7B-450mm/+40to120% extra chips wafer fabs, (90% yield range vs 60 to 80% rivals), moving to 22nm geometries, 14nm by 4q13;
    Chips take about 3 months to make and they are put through more than 300 separate processes
    intel atom vs brit arm (less pwr & customizable, 98% of cellphones since 2005 have had arms in them) for touch panel (w8) mobile/cell phone/tablet mkt
    i3 55W ceiling...

    amd Piledriver (x86 architecture) retail Oct 2012, 4c, 8c, L2&3 16MB, am3+, ddr3, dx11, 32nm; 1st gen Zambezi; (pdriver performs +15% than bulldozer;)
    FX4300 8MB/95w, 3.8GHz, $131, 4c
    FX6300 14MB/95w, 3.5GHz, $176, 6c
    fx8320 16MB/125w, 3.5GHz, $242, 8c
    fx8350 16MB/125w, 4GHz, $253, 8c
    K10 4q07 (phenom x4/IIx3/IIx4, gen3 Opteron), K8 2q03 (Athlon 64/64x2, Sempron 64), k7 3q99 (Athlon/xp, Duron, Sempron)
    ?Trinity apu (AcceleratedProcessingUnit, pdriver) architecture (2gen x86 cores) Oct 1, integrated gpu, 'fusion' fm2 formfactor (previous llano use fm1 socket), dx11 (shader5), (radion A4-7480 to A10-7660 hd gpu)

    Merom mobile arch (1q06, 667-800MT/s, 35W, bga479, socketM&P; updated 65nm [fab] Yonah core P6[pentium pro '95]) marked Intel’s acknowledging that the Pentium 4 (netburst arch) was not a viable long term solution because power efficiency is crucial to success;
    65nm Conroe desktop (core2 quad, 800 MT/s, 65W, lga775); Woodcrest (lga771) 1333 scaled down to 1066MT/s workstation (40W@1.6-1.86GHz, 80W 3GHz), server(xeon socket604&lga771);
    differing socket(M,P,T,fcbga), bus speed and pwr consumption; the identical Core microarchitecture was designed by Israel's Intel Israel (IDC) team;
    stepping represent incremental improvements but also different sets of features like cache size and low power modes;
    Nehalem 45nm (16pipeline), Westmere 32nm; Sandy bridge 32nm, ivy bridg 22nm; Haswell 22nm, Broadwell 14nm; Skylake 14nm, Skymont 10nm;
    sandy bridge 32nm integrated x86 microprocessor as SoC (cpu/gpu+last lvl cache+sys I/O) vs amd bulldozer
    intel haswell dual-threaded, out-of-order cpu arch 22nm FinFET, (high end tablets, low pwr)
    theoretical peak performance for Haswell is over double that of Sandy Bridge, twice the FLOP/s, cache bandwidth doubled, vs '13 amd Steamroller core & w8;
  • g101 - Wednesday, November 21, 2012 - link

    What is this pile of copy/pasted shit?
  • Principle - Thursday, November 29, 2012 - link

    Why is it that every review I see, no one uses the RAM that the CPU memory controller is rated for? Or in overclocking, did you see what a RAM overclock added?

    Just because your Intel chip may not perform any better with 1333, 1600, or 1866, doesnt mean you dont run your AMD chip with the 1866 its rated for. I see this all over the review sites. You dont have to use the same RAM in both systems for a comparison of CPU performance. RAM choice is designed into the CPU, and has an affect.
  • ThaSpacePope - Monday, December 3, 2012 - link

    Nice job AMD. I guess some of these benchmarks are skewed because windows 8 is superior to windows 7 because it uses the modules better, but still.. the $166 8350 outperforms in some cases or comes close to the performance of a $200 i5-3570k.

    This is great news for AMD. Keep up the good work!
  • jreyes2254 - Thursday, December 20, 2012 - link

    I find it funny all the Intel lovers are hating on so called AMD "fanboys."

    Isnt defending Intel and hating on AMD in turn make you all Intel "Fanboys."?

    ...Intel has not served me well I havent used one since my ol P4... I gladly claim the title of AMD "Fanboy.".

    I have this CPU, Its pretty Epic.

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