Audio Performance

We limited audio testing to the Rightmark 3D Sound version 2.2 CPU utilization test and tested with sound enabled to show the performance effects on several games. The Rightmark 3D Sound benchmark measures the overhead or CPU utilization required by a codec or hardware audio chip.

The Realtek ALC-850 was tested with the recently released 3.82 driver set. The Realtek audio drivers do not support more than 25 3D buffers at this time, so the scores cannot be directly compared to the HDA Mystique 7.1 and Creative Labs Sound Blaster X-FI cards in the benchmarks.

Audio Performance - Empty CPU - 32 Buffers

Audio Performance - 2d Audio - 32 Buffers

Audio Performance - DirectSound 3D HW - 32 Buffers

Audio Performance - DirectSound 3D EAX2 - 32 Buffers

The Realtek ALC-850 codec has average CPU utilization rates with reductions of up to 37% in the 3D tests compared to the previous driver release. The HDA Mystique 7.1 Gold has the highest overall utilization rates of the audio solutions tested, but its scores improved up to 20% with the January driver release. BlueGears is no longer supporting the card directly, but HDA continues to offer support. The Realtek ALC-882 performance is equal to the ALC-850 and offers significantly better audio quality. The Sound Blaster X-FI has the lowest rates, with the Sound Blaster Live! 24-bit solution on the Gigabyte board following closely. Let's find out how these results translate into real world numbers.

Game Audio Performance - BattleField 2

Game Audio Performance - Splinter Cell Chaos Theory

Game Audio Performance - F.E.A.R. - Performance Test

Game Audio Performance - Serious Sam II - Branchester Demo

Game Audio Performance - Half-Life 2 - AT Jarred Demo C17

The audio performance numbers remain consistent as the Realtek ALC-850 consistently finishes behind the HDA Mystique 7.1 and SoundBlaster X-FI except in the Serious Sam II and Splinter Cell benchmarks. Serious Sam II has an average loss of 21%, Half Life 2 at 23%, Splinter Cell at 2%, Battlefield 2 at 26%, and F.E.A.R. at 7%. While the output quality of audio with the Realtek ALC-850 is acceptable for desktop usage, it is not for games that rely on 3D sound for effects and atmosphere. The audio quality in music and video remains somewhat hollow and flat in our subjective testing.

Obviously, if you are a serious gamer, then a dedicated sound card is still a requirement to ensure consistent frame rate averages across a wide variety of games. We noticed in previous testing of our Battlefield 2 and Half Life 2 benchmarks that the ALC-850 would stutter momentarily in intensive scenes. The 3.82 driver release has now eliminated stuttering in the BF2 and Half Life 2 benchmarks.

Ethernet Performance Final Words
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  • Calin - Friday, February 17, 2006 - link

    What about sorting the graphs based on the min frame rate?
    :) I guess some people are never happy ;)

    Great job, and a nice article!
  • yacoub - Thursday, February 16, 2006 - link

    Once you've owned a passively-cooled motherboard like any of the recent Asus ones, it's hard to even look at one with a fan on it. It also makes shopping for a motherboard a LOT easier because you just cross off all the fan ones right away (unless you're a mod fiend who will actually go through the trouble of buying a chipset cooler or two and rip the fan assembly off the brand new expensive motherboard and hope that cools it well enough).
    I hope more manufacturers take up the passively-cooled trend.
  • Gary Key - Sunday, February 19, 2006 - link

    I disabled the fan and only witnessed a 2c increase on the MCP. Biostar could have saved a few cents and put towards a Gigabit Lan solution. ;-)
  • Marlin1975 - Thursday, February 16, 2006 - link

    Sound and ethernet. Why do companies keep using the realtek junk. bad quality (part and drivers) and juts shows a motherboard company does not care when they use realtek.

    Any time I see realtek on a board I think the sound and even ethernet were a after thought like "Oh we forgot sound. Lets just put the cheapest POS on there. OK"


    COME ON. Good chipset but you come so close then put junk on for sound and so forth.
  • Myrandex - Thursday, February 16, 2006 - link

    For me that issue doesn't matter at all. My Sound Blaster Audigy 2 is still doing its job nicely, and getting a nice onboard sound solution still gets disabled all the same. Now for integrated SB Giga-bite ethernet is something that comes into play with my decisions, and I have been real happy with Giga-byte putting ieee1394b controllers on their boards (and am hoping that external HDD 1394B cases fall in price sooner or later). Integrated wireless is a neat feature some boards have as well.
  • Wesley Fink - Thursday, February 16, 2006 - link

    Realtek does have some really cheap audio and LAN chips, but they also have some pretty decent products. In the High Definition area the ALC882 is a really good audio codec with an excellent feature set that produces decent sound and very low noise. If you go through some recent reviews you will see both Gary and I have praised the Realtek ALC882, which is NOT included on this Biostar board :-)
  • Marlin1975 - Thursday, February 16, 2006 - link

    yea but you also go on about bad drivers that are STILL in need fo a update and other issues. So sorry but realtek is still junk in my book. That and with so many other options from VIA's envy, c-media, etc... why use something that has problems and are STILL being addressed today?
  • DigitalFreak - Thursday, February 16, 2006 - link

    I agree. Using Realtek for LAN is bad enough, but using a PCI solution? That's unacceptible. Even if you don't care about GbE, the CPU utilization is rediculous!
  • Peter - Tuesday, February 21, 2006 - link

    The RTL8201 is not a PCI ethernet chip, it's just a PHY companion to the chipset's own engine. This is a research error in the article.

    http://www.realtek.com.tw/products/products1-2.asp...">http://www.realtek.com.tw/products/products1-2.asp...

    The abysmal performance rather more likely stems from transmission errors or poor signal quality - which would point to a damaged or poorly laid out board, or bad cabling.

    PHYsical interface chips have zero influence on throughput, as long as signal integrity is being maintained - and as far as that is concerned, Realtek's solution is definitely up to the job. Question is, is the mainboard's layout?
  • Peter - Tuesday, February 21, 2006 - link

    ... and of course, we need to keep in mind it's a 10/100 PHY, not a gigabit PHY.

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