AMD's Trinity APU Efficiency: Undervolted And Overclocked

The Pursuit Of Balance Warms Our Hearts

Because AMD split its Trinity architecture introduction up into two days of coverage, I’m forced to draw a conclusion today that runs counter to the efficiency data we just presented.

At its stock settings, the company’s flagship A10-5800K is generally faster than Intel’s Ivy Bridge-based Core i3-3220/3225 in heavily-threaded applications and slower in x86-oriented tasks that only run on one core. Some of our benchmarks fall somewhere in between, and the results reflect as much.

Although HD Graphics 4000 is clearly an improvement over HD Graphics 3000, Intel cannot touch AMD in gaming. The difference is significant enough to split the two solutions across resolutions and detail settings. Where AMD is viable, Intel is not. And if you step down to the HD Graphics 2500-equipped Core i3-3220, well, we hope you like spreadsheets, word processing, and Web browsing.

The price you pay for AMD’s heavy emphasis on graphics performance is power consumption, heat, and, at least on our test bench, noise. Intel’s Core i3-3225 can be used to drive a very fast desktop machine that, completely built-up, uses far less power than the TDP of just AMD’s APU. And it does so without as much as a whisper.

Of course, now we have pricing details to consider as well. AMD plans to sell its A10-5800K for $122 and its A8-5600K for $101. The Core i3-3220 sells for $130 and the -3225 is $145. Frankly, neither Intel option is very attractive to us. We’d rather go for a Pentium G2120 for $100 with entry-level discrete graphics. On the AMD side, the A10-5800K touches the performance we’d want from an on-die GPU to feel comfortable recommending to a friend with modest gaming ambitions. The A8-5600K gives up too much ground in that regard, and the A8-3870K couldn't quite get there last generation, either.

In the end, then, both Intel and AMD are offering you an experience. Which one do you pick?

Intel gives you great performance in productivity and content creation apps, with a fantastic thermal envelope. But any aspiration for gaming necessitates discrete graphics, putting you in the $200 range.

AMD counts on a “good enough” showing in x86-based applications and ample 3D muscle to play a number of modern games at mainstream resolutions. In exchange, you’re asked to accept comparatively high power use. But it’s a price point below what Intel charges for its neutered Core i3-3220 that swings favor toward the A10-5800K for enthusiasts on a strict budget.

We’re power users, after all. We know how to cope with heat and noise; we can deal with a 100 W chip, even in an HTPC. But there’s no way to make the Core i3 look better unless you spring for an add-in card. AMD’s emphasis on balance makes the A10-5800K a better platform for more people than Intel’s closest competition.

Chris Angelini
Chris Angelini is an Editor Emeritus at Tom's Hardware US. He edits hardware reviews and covers high-profile CPU and GPU launches.
  • esrever
    Most PC are idle or semi idle when people have them on. 90% of the time I use my PC, I do web surfing or watch video or a text editor for work, my pc is not loaded with benchmarks 24/7. If you look at idle power consumption, the trinity APUs are amazing. They easily beat out intels offerings. If you are looking at the power consumption over a month, the trinity will be much more energy efficient than the i3 for most people.
    Reply
  • tacoslave
    man getting this in a 17inch laptop with a 12 cell battery would make it an instabuy
    Reply
  • mayankleoboy1
    In the end, then, both Intel and AMD are offering you an experience. Which one do you pick?

    At this price point, i would choose AMD Trinity.
    Reply
  • DjEaZy
    ... i like the WinZip with OpenCL acceleration benchmark... it shows...
    Reply
  • cangelini
    esreverMost PC are idle or semi idle when people have them on. 90% of the time I use my PC, I do web surfing or watch video or a text editor for work, my pc is not loaded with benchmarks 24/7. If you look at idle power consumption, the trinity APUs are amazing. They easily beat out intels offerings. If you are looking at the power consumption over a month, the trinity will be much more energy efficient than the i3 for most people.Happy to set a couple of systems up and let you know what I find.
    Reply
  • mayankleoboy1
    AMD should team up with developer of 7zip to accelerate it on APU's. That will make Trinity look better. A lot of people use 7zip. And most of the installation setup exe files are compressed using LZMA algorithm.
    Reply
  • mayankleoboy1
    Chris, it would be great to see some benchmarks of applications that uses the new FMA3 instructions of the Piledriver.
    Reply
  • cangelini
    esreverMost PC are idle or semi idle when people have them on. 90% of the time I use my PC, I do web surfing or watch video or a text editor for work, my pc is not loaded with benchmarks 24/7. If you look at idle power consumption, the trinity APUs are amazing. They easily beat out intels offerings. If you are looking at the power consumption over a month, the trinity will be much more energy efficient than the i3 for most people.So, it's probable that we're seeing a difference in configuration. It looks like Anand is using the Gigabyte A85X board and perhaps an older driver version. I'm on the MSI board and Cat 12.8, with a different Intel setup as well. On the Windows desktop, after 10 minutes on each config, I get 59 W for Intel and 67 W for AMD at idle.
    Reply
  • techcurious
    Chris, for the sake of completeness, any chance you could undervolt the i3-3225 at stock speeds and run the power consumption/efficiency tests on it? ;) ...to reveal how low the i3 can be pushed with some tweaking as well, and create the opportunity for a more fair comparison with the undervolted Trinity results.
    Reply
  • sarinaide
    Thanks Chris, another great article to pass time over. You really need to comment on the forums more and more so to help out against the blatent belligerence against what AMD are trying to achieve and how they are looking to achieve it.

    Hopefully this articale can start to filter around particularly for the budget users which A-series is premised to target.
    Reply