Anisotropic Filtering Quality

At IDF last year Intel promised an improvement in its anisotropic filtering quality compared to Sandy Bridge. Personally I didn't believe SNB's GPU was fast enough to warrant turning on AF in most modern titles, but as Intel's GPU performance improves it must take image quality more seriously.

I wouldn't put a ton of faith in these early results as things can change, but AF quality does appear to be much better than Sandy Bridge:

The peculiar radial lines that were present in SNB's algorithm remain here, although they are more muted. Again it's too early to tell if we're looking at final image quality or something that will improve over time. If we are to judge based on this result alone, I'd say it mirrors what we saw in our performance investigation: Ivy is a step towards AMD in the GPU department, but not a step ahead.

DirectX 11 Compute Performance

As Ivy Bridge is Intel's first DirectX 11 GPU architecture, we're actually able to run some DX11 workloads on it without having them fall back to DX10. We'll do a much more significant investigation into GPU compute performance in our full Ivy Bridge review, but as a teaser we've got our standard DirectX 11 Compute Shader Fluid Simulation test from the DX11 SDK:

DirectX11 Compute Shader Fluid Simulation - Nearest Neighbor

Ivy Bridge does extremely well here, likely due in no small part to its excellent last level cache. The Fluid Simulation we run looks at shared memory performance, which allows Ivy to do quite well. We're seeing over 3.2x the performance of Sandy Bridge here, and even a slight advantage over Llano.

Intel HD 4000 Performance: Skyrim QuickSync Performance
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  • taltamir - Monday, March 12, 2012 - link

    Rarson is correct.
    He isn't suggesting no IGP at all. He is saying put a good IGP on the lower end.

    While there ARE people who need a powerful CPU and will not get a video card because they don't play games, those people do not in any way benefit from having a higher end IGP.

    High end gamers = discreete GPU + Powerful CPU
    Budget gamers = IGP + mid-low range CPU
    Non gamers with money = High end CPU + IGP (underused)
    Non gamers on a budget = Mid-low range CPU + IGP (underused)

    The only people who need a more powerful GPU are the budget gamers and thus it makes sense on the lower end CPUs to have a more powerful IGP.
  • Urillusion17 - Monday, March 12, 2012 - link

    Great article but.... where are the temps??? The few benches I have seen don't mention overclocking, and if they do, they do not mention temps. I am hearing this chip can boil water! I would think that would be as important as anything else...
  • DrWattsOn - Tuesday, March 13, 2012 - link

    +1 (very much in agreement)
  • boogerlad - Wednesday, March 14, 2012 - link

    is it possible to fully load the igp with an opencl application, and not affect the cpu performance at all? From what I've read, it appears the igp shares the cache with the cpu, so will that affect performance?
  • rocker123 - Monday, March 19, 2012 - link

    Generational performance improvements on the CPU side generally fall in the 20 - 40% range. As you've just seen, Ivy Bridge offers a 7 - 15% increase in CPU performance over Sandy Bridge - making it a bonafide tick from a CPU perspective

    Should be :Generational performance improvements on the GPU side generally fall in the 20 - 40% range
  • rocker123 - Monday, March 19, 2012 - link

    Generational performance improvements on the CPU side generally fall in the 20 - 40% range. As you've just seen, Ivy Bridge offers a 7 - 15% increase in CPU performance over Sandy Bridge - making it a bonafide tick from a CPU perspective

    Should be :Generational performance improvements on the GPU side generally fall in the 20 - 40% range
  • tipoo - Monday, March 19, 2012 - link

    They give the drivers their own tweaks and bug fixes, but I doubt they could do something like add T&L without the manufacturers support. In fact, they didn't, unless they have bigger driver teams now.
  • ClagMaster - Wednesday, March 21, 2012 - link

    "Personally, I want more and I suspect that Haswell will deliver much of that. It is worth pointing out that Intel is progressing at a faster rate than the discrete GPU industry at this point. Admittedly the gap is downright huge, but from what I've heard even the significant gains we're seeing here with Ivy will pale in comparison to what Haswell provides."

    Personally, I believe on-board graphics will never be on par with a dedicated graphics part. And it is obcessive-compulsive ridiculous to compare the performance of the HD4000 with discrete graphics and complain its not as good.

    The HD4000 is meant for providing graphics for business and multi-media computers. And for that purpose it is outstanding.

    If you want gaming or engineering workstation performance, get a discrete graphics card. And stop angsting about how bad onboard graphics is to discrete graphics.
  • pottermd - Thursday, March 22, 2012 - link

    Today's desktop processors are more than fast enough to do professional level 3D rendering at home.

    The article contained this statement. It's not really true. I've had a long nap and the render I'm doing is still running. :)
  • Dracusis - Friday, April 6, 2012 - link

    "The people who need integrated graphics"

    No one *needs* integrated graphics. But not everyone needs discrete graphics. The higher performance an IGP has, the less people overall will *need* DGPs.

    Not all games need dedicated graphics cards, just the multi million dollar re-hashed COD's that choke retail stores. There are literally thousands of other games around that only require a small amount of graphics processing power. Flash now has 3D accelerated content and almost every developer using it will target IGP performance levels. Almost all casual game developers target IGPs as well, they're not selling to COD players. Sure, most of those games won't need a hight end CPU as well, but people don't buy computers to play casual games, they buy them for a massive range of tasks, the vast majority of which will be CPU bound so faster would be better.

    Also, as an indie game developer I hit performance walls with CPUs more often than I do with GPUs. You can always scale back geometry/triangle counts, trim or cut certain visual effects but cutting back on CPU related overheads generally means you're cutting out gameplay.

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