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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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  • Ukdude21 - Thursday, August 15, 2013 - link

    If you are the worried about the earth why don't you give your pc away. Least then we would not have to read your shit comments lol. Reply
  • taltamir - Thursday, October 25, 2012 - link

    Starting the power cosumption graphs at 50 watt instead of 0 watt is GROSSLY MISLEADING! and very unfair to AMD.

    Lack of performance per watt comparison is unfair to Intel. Yea, AMD finally is able to, at stock, beat intel on some benchmarks... But they consume significantly more power to do so (intel could easily start selling higher clocked parts too)
    Reply
  • pcfxer - Thursday, October 25, 2012 - link

    If I ever build a new machine...it looks like I'll swing towards my first ever Intel box...hrmmm the anticipation may make me do it just for fun even though my Phenom II X555BE Unlocked and OC'd to 3.5GHz serves me just fine. Reply
  • OCedHrt - Friday, October 26, 2012 - link

    it would be nice if they were normalized to idle power usage since we are comparing CPU power usage. Reply
  • halbhh2 - Friday, October 26, 2012 - link

    I got curious about the idle power and visited 7 sites to look at reviews. No 2 sites had the same idle power difference between the 8350 vs the i7 3770. Values ranged from 9 watts AMD *lower* (lower! than intel) to 22 watts higher. The higher readings seemed to all be with the Asus Crosshair V, which logically must be a power hog.

    You should consider the idle power numbers *not* representative. Unreliable.
    Reply
  • danrien - Monday, October 29, 2012 - link

    Seems like its server opteron cousin would be kick-ass. Reply
  • 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. Reply
  • 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.
    Reply
  • DDR4 - Wednesday, November 07, 2012 - link

    nice to see AMD make better procs and lower their prices Reply
  • andrewkoch - Friday, November 09, 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.
    Reply

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