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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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  • redwarrior - Wednesday, October 24, 2012 - link

    What a one dimensional computer enthusiast you are. You spend hundreds to play games on a computer when you could do the same ona console for less?? I use my computer to gain knowledge, impart knowledge, do organizing work to liberate the working class from wage slavery, write leaflets, an documents. I occasionally play strategy games that are usually multi-threaded, like Galactic Civilizations II. . There is no greater value on the planet than the FX processors for what I do. They save me time for the work I do over the Intel processor in the $200 price class. Time and money that's important , frame rates of a 120 are useless but too the over-privileged who buy 120 mhz monitors for their gaming. What a waste of money and resources that could be used for the advancement of human kind. Reply
  • bennyg - Thursday, October 25, 2012 - link

    "Value" is more than just perf per purchase dollar, running costs also need to be included.

    E.g. a basic calculation based on the charts above the FX CPU I've saved $50 on would cost 2c extra per hour at full load in power. So 2500 hours at load would be my break even point. That's 7 hours a day at full load over a year, a heavy use scenario but quite possible.

    Multithreaded games are such a vast exception to the rule (that once you have "enough" CPU power you gain infinitessimal fps from more) they are not worth even mentioning.
    Reply
  • redwarrior - Thursday, October 25, 2012 - link

    You know NOT what you speak. Battlefield 3 is multithreaderd and look at AMD FX-8350 on Battlefield III - right up near the top, better than I 5 3570 and close to I7 3770. You guys are ignoring the facts and ignoring the trends in software. the move to parallelism is unstoppable and will accelerate. Multithreading is a growing presence and ONLY BAD programmers and software designers ignore it. The turning point will come when steamroller ships in a year and it will compete nicely with Hasbeen. At 28nm it will be almost as efficient as Hasbeen
    Performance wise it will be as good.
    Reply
  • CeriseCogburn - Tuesday, October 30, 2012 - link

    LOL why am i not surprised, massive amd fanboy with chips on the shoulder, and a fantasy brain.
    " o organizing work to liberate the working class from wage slavery"
    LOL - perfect, just like the rest of the amd fruitballs. Have fun at the OWS protests, though it would have been decent to join up with Tea Party, instead of coming on a year plus late after all the complaining. (you brought up politics fanboy)

    Anyway back to your fanboy fantasy. As I said, you can look all day long at the pileofcrap amd releases and tell yourself it's the greatest ball of cheese for you, but no one has to believe your bs. One big reason why.
    SB 2500K oc's to 4500 like butter on stock everything, all 4 cores, all day and all night with zero hiccups, and blows the amd crap away period.

    You actually have to be very stupid to not choose it. Very stupid.
    Be aware fanboy, you're looking at stock 2500K in all the charts, and a clear +50% increase in instantly available with it, FOR FREE.

    There is no way any amd fanboy made the correct decision after 2500K was released. And it's not occurring now either. You're living a lie, so please stop sharing it with us, and by the way - I don't think it's your place to tell others WHAT they can use their computer systems for.

    THEY OWN THEM, not you. They are theirs, not yours, and you shouldn't be tooting your virgin purity hippy love angel wing CRAP here, and then also have the obnoxious insolence to tell others they are wasting their computer power.

    There are plenty of people who will tell you flat out you are wasting your life and wrecking the nation with the crap you are doing, no doubt about it, so keep it to yourself, won't you ?

    Now let's hear how your crapdirver amd can possibly match a 2500K in the real world...
    LOL
    ain't happening mister

    Reply
  • Evilwake - Saturday, November 17, 2012 - link

    lol that funny calling a spade a spade look at yourself i my self have your 2500k and have the piledriver dont see any difference in them in the real world in fact whats funny is i can run many programs in the back ground and still play aion without any frame loose or any shuttering problems cant do that with my 2500k it drops in frame rates and shutters like hell so keep telling peeps how much u dont know about cpu's we really like hearing from u. Reply
  • CeriseCogburn - Sunday, December 09, 2012 - link

    another liar, another amd fanboy, another evil person Reply
  • iceman34572 - Wednesday, January 02, 2013 - link

    Who gives a crap who has the better processor? Honestly......do you work for Intel? Then why care what other people like? I have an FX series processor, as well as several Intel machines. I like them both. Going online and getting into a pi$$ing contest over which company makes a better processor and resorting to making fun of people (google "Internet tough guy and you'll see what a majority of people think about that) is non constructive, gains you nothing except negative attention, and makes you look less intelligent than you probably are. I could give a $hit what you like, or which processor you run. Neither AMD nor Intel pays me any money to give a d@mn, and whether I think you are wasting your money or spending it wisely doesn't impact me in the least bit. People, just buy what you personally like, and screw all the fanboyism that seems to be rampant ON BOTH SIDES. Reply
  • pmartin - Thursday, January 03, 2013 - link

    You hope it performs as well as Hasbeen. My guess is it won't. If you want top of the range performance, buy Intel, simple as that. Reply
  • pl1n1 - Saturday, October 27, 2012 - link

    The technical arguments have some merits, the political ones are per-digested socialist propaganda. I almost threw up at the end of the post.
    Must be nice to be able to advance the cause of the class struggle from a cozy living room somewhere in a free market country where your freedom of speech is protected by some freely elected capitalistic pig.

    Useful idiots from around the world unite!
    Reply
  • pmartin - Thursday, January 03, 2013 - link

    Please shut the hell up. Reply

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