• What
    is this?

    You've landed on the AMD Portal on AnandTech. This section is sponsored by AMD. It features a collection of all of our independent AMD content, as well as Tweets & News from AMD directly. AMD will also be running a couple of huge giveaways here so check back for those.

    PRESENTED BY

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
POST A COMMENT

229 Comments

View All Comments

  • klatscho - Tuesday, October 23, 2012 - link

    but at least priced decently. Reply
  • leexgx - Tuesday, October 23, 2012 - link

    still like how AMD think they have 8 full cores in there (some sites list the Modules not FP cores in their lists)

    8x is 4 Modules (4M/8T)
    6x is 3 Modules (3M/6T)
    4x is 2 Modules (2M/4T)

    they hardly outperform stock clocked matched cpus (that they listed)
    Reply
  • leexgx - Tuesday, October 23, 2012 - link

    also to add if you own an Bulldozer (or Vishera) type of cpu you should all ready have these patches installed
    http://support.microsoft.com/kb/2646060
    http://support.microsoft.com/kb/2645594
    Reply
  • Penti - Wednesday, October 24, 2012 - link

    There are 8 fully pipelined integer cores in there, they are just very weak. Some of it is the shared frontend/decoder some of it is the integer execution units themselves. Weak SIMD/FPU-performance isn't the only thing it got. It just does so much less. You don't have two pipelines with separate resources to achieve SMT/HT. They need wider execution here. Preferably dropping the shared front end thing too. Makes no point of having it around, focus on making it faster and dump all that cache which does no good. Mobile/Notebook chips can't really have 16MB of cache any way. Just a few MB. Reply
  • DDR4 - Wednesday, November 07, 2012 - link

    It's just a marketing thing, the cores don't have that much power, AMD's just looking to do better than Intel in one area. Reply
  • Homeles - Sunday, October 28, 2012 - link

    Because performance = core count. Brilliant. Reply
  • CeriseCogburn - Tuesday, October 30, 2012 - link

    You know, you look at this crap amd chip in the review, and then it hits you... hard

    You can lock sandy b 2500K at 4,500.00 mhz all day long on every motherboard out there, all 4 cores, with no voltage increase, w the crap stock intel fan for years on end, never a hiccup, and smoke the every living daylights out of everything amd has.

    I mean, I find it very interesting that with videocards we STILL hear about overclocking, but when it comes to cpu's, suddenly all the OC fanboys of amd fall dead freaking silent on the matter.

    Sorry, just cannot help noticing when the wannabe emperor is stark naked and moments ago his glorious worshippers were pointing and admiring and swooning over just how fast the amd jaybird can run when pushed, and then.... suddenly, the MASTER OC CHIP OF ALL TIME, the Sandy Bridge... is rather ignored... and the naked jaybird streaking thing becomes the dejected peasants silence...

    Really sick of it man. Really sick of it.
    Reply
  • g101 - Wednesday, November 21, 2012 - link

    Oh look, it's the highly ignorant fool CeriseCogburn...

    You make demonstrably false statements on every single AMD article and merely provide further proof of your ignorance. Honestly, if you're unable to find anything better to do than post idiotic comments on every anadtech article, I have a suggestion: EDUCATE YOURSELF, LITTLE DIPSHIT.
    Reply
  • Desolator2B - Wednesday, November 21, 2012 - link

    Dude, seriously? Did you know the current world record for overclocking is held on an AMD processor? AMD is incredible when overclocking, especially super cooling, yes it may be a bit slower than Intel, but damn you can't beat AMDs price.

    You're a bit of an idiot mate.
    Reply
  • vench - Friday, November 23, 2012 - link

    think about this..
    which one is better an eight unlock cores as AMD called it.
    or 4 cores with hyperthreading technology?

    4 cores with hyperthreading it will act like an eight cores because single core will act like two cores as claimed by intel but bear in mind there would be a mathematical complex going on behind intels hyperthreading. but WHAT if you unlock this thing so it would go freely to eight cores as claim by AMD?

    THAT IS THE REASON WHY AMD HOLDS THE WORLD RECORD FOR OVERCLOCKING BECAUSE THEY MANAGED TO UNLOCK THIS THING.
    IF INTEL WILL PRODUCE 8 CORES CPU..THEN AMD WILL MAKE 16 CORES..AND THEN AMD STILL WIL BE THE WINNER FOR WORLD RECORD..

    ON THIS POINT OF VIEW JUST BE OPEN MINDED.
    DO NOT ACT LIKE YOU REALLY SICK WHEN ITS NOT BECAUSE YOU WOULD MAKE YOURSELF LIKE TWICE MORON AND TWICE IDIOT.
    JUST TAKE AN ADVICE FROM G101. EDUCATE YOURSELF.

    I USED TO BE AN INTEL USER.. BUT WHEN I'M BEGINNING TO UNDERSTAND THIS TREND..I WOULD LOVE AMD AS THEY LOVE CONSUMER'S POCKET (AGAIN- BE OPEN MIND. ITS MY OPINION)
    Reply

Log in

Don't have an account? Sign up now