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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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  • sleekz - Thursday, May 02, 2013 - link

    CAPS. The world overclocking record is meaningless. You can't compare clock speed across brands and AMD cores are half-cores. They still can't compete with intel and the circuit size is several years behind, which is why they consume so much power. AMD has given up in the enthusiast CPU market, and is losing money. Reply
  • Mombasa69 - Thursday, March 14, 2013 - link

    My AMD Vishera 8350 blows my ghay i7 3770k out the water and was HALF THE PRICE, says it all really. Reply
  • Etnos - Saturday, April 20, 2013 - link

    I hardly think you own intel shares so the fact you care so much is pretty sad.

    very sad.
    Reply
  • Idiot10 - Tuesday, May 07, 2013 - link

    Here comes the 2500K-loving Intel mercenary know-it-all-about-processors again, and yet he cannot sleep to know that there are chips out there who can outperform his 2500K. SOB!!!! Reply
  • Idiot10 - Tuesday, May 07, 2013 - link

    Here comes Mr. ChariseHogburn again. the all-knowing Intel mercenary processor expert, who thinks nothing can beat his beloved 2500K. SOB!!!! Reply
  • sleekz - Thursday, May 02, 2013 - link

    Priced cheaply, but they don't match price/performance wise. Price is not a valid argument against intel. Reply
  • Abdussamad - Monday, August 12, 2013 - link

    Do the math on electricity consumption and you find it is not priced decently at all. Let's say you run a system with an idle FX 8350 for 8 hours a day everyday for 5 years and electricity costs you $0.16 per kwh:

    (( 8 hours * (74.2 - 57.5) * 365 days * 5 years ) / 1000) * 0.16 = $39

    (74.2 - 57.5 is the difference in idle power consumption between an fx-8350 and i5-3570)

    So add $40 to the price of the FX 8350 before you do a comparison. More if you run your system 24/7.
    Reply
  • lostinspacex - Wednesday, November 13, 2013 - link

    duuude its 40 dollars in 5 years, you spend more going to a restaurant once , and u are multiplying watts with kilowatts xD, basic math mistake Reply
  • chekk42 - Wednesday, November 13, 2013 - link

    Look closer. The math is correct. However, yes, $40 over 5 years is not really a concern. Reply
  • ninza228248 - Monday, April 14, 2014 - link

    After 5 years add $40 to AMD and you will get mind blowing processor compared to Intel Core i5-3570 or any intel processor after 5 years in that price bracket... Reply

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