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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  • A5 - Tuesday, October 23, 2012 - link

    The gaming benchmarks contain exactly 0 FPS games. You should really read the article before commenting.
  • kevith - Tuesday, October 23, 2012 - link

    I could eat a dictionary and SHIT a better comment than that.
  • CeriseCogburn - Tuesday, October 30, 2012 - link

    " The FX-8350 did immensely better in that gaming selection. Mostl gamers are not shoot-em-up fascist gamers. "

    LOL - wrong again, but your lefty whine was extremely amusing. Most gamers are shoot em up gamers, YOU LIAR.
  • GullLars - Tuesday, October 23, 2012 - link

    What they didn't show you is what happens when you OC the K parts from intel. They end up roughly in the same TDP as AMD on stock, and just crush them on performance, so if you are going to use the same aftermarket cooler and will overclock either pick, the Intel parts can go further and win across the board.
    Compared to the cost of an entire system ~$100-150 extra on the CPU for a 3770K might end up being around a 10% increase in total build cost, and giving you anywhere from 10 to 50% better performance (or more in some corner cases).

    I'm happy with my OC'd 3930K :D (compared to to the rest of my equipment, the price was no problem)
    Probably upgrading my C2D 2.0GHz + 8600GTM laptop to a Haswell with only IGP in 2013. With an SSD and RAM upgrade it has had surprisingly good longevity.
  • CeriseCogburn - Tuesday, October 30, 2012 - link

    Exactly, all the amd cpu unlockers, all the dang phenom 2 overlcockers - totally silent.

    The 2500K smoke sit up to 4500mhz like butter, but heck, when something is freaking GREAT and it's not in amd's advantage, it's memory hole time, it's ignore it completely after barely mentioning it, and just as often continue to declare it an unused and unliked and proprietary failure that holds everyone back - whatever can be done to lie and skew and spin.

    It's just amazing isn't it.
  • eanazag - Tuesday, October 23, 2012 - link

    I had pretty low expectations admittedly and for good reason. This is a great step because I would have to think platform vs. platform where before I didn't even need to consider it. Intel has a huge thermal advantage, which indicates that Intel could easily come out with a proc at anytime to take advantage of that headroom should AMD ever become slightly threatening, and sadly still be below performance per Watt. I could reasonably consider AMD now for my desktop. Where AMD fails is at the platform level. They have underperformed in the motherboard department. If they wanted to sell more, they need to give serious advantages at the motherboard + CPU purchase level versus Intel. They have been fine with a mediocre chipset. They failed when they locked out Nvidia from chipset development, same with Intel. AMD and Intel's greed was a big loss for the consumer and part of the reason why AMD doesn't compete well with Intel. Nvidia made better chipsets for AMD than AMDs ATI chipset development team.

    It is even worse on the server side for AMD. AMD needs to include 10GbE on the board to really question Intel and this is doable. AMD cannot compete on process (22nm and 3D transistors) unless Intel closed shop for 18 months.
  • CeriseCogburn - Tuesday, October 30, 2012 - link

    LOL - thank you so much.
    Yes, the hatred for nVidia (and Intel) cost the amd fanboys dearly, but they really, really, really enjoyed it when nVidia chipsets got shut down.
    nVidia was going to be destroyed then shortly thereafter according to them, and thus we heard a couple years of it from their freaking pieholes - amd would drop the price and knife nVidia into oblivion... and bankrupcty... cause amd has a "lot more room" to price drop and still rake in profit... they said... LOL - as they whined about nVidia being greedy and making so much money.
    Yes, they were, and are, nutso.

    Oh the party days they had... now they have CRAP. LOL
  • Ken g6 - Tuesday, October 23, 2012 - link

    Anand, I think you missed a diamond in the rough here for gaming. Obviously, if someone has the money for an i5, they should get an i5. But if they don't, the FX-4300 looks like a better gaming choice than an i3. There are cheap mobos available, so overall cost is less than an i3, and the FX-4300 is overclockable. OCed it may even approach low-end i5 performance - at a power cost, of course.
  • tekphnx - Tuesday, October 23, 2012 - link

    For only $10 more I'd say the FX-6300 is the better bet. Slightly lower clock speed but still overclockable, and I don't think it will be that long before six cores become really relevant for gaming.
  • lmcd - Tuesday, October 23, 2012 - link

    Worst case you can probably disable a core and OC more, right?

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