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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  • jamesbond007 - Thursday, February 16, 2006 - link

    Haha! Way to go, Gary. You have a fan base! =P
  • Gary Key - Thursday, February 16, 2006 - link

    Thanks for kind words everyone. I will post a short update to this article in a couple of days as the new bios results are looking promising in resolving some overclock and bios lockup issues.
  • drewintheav - Thursday, February 16, 2006 - link

    Gary is awesome! :)
  • Zebo - Thursday, February 16, 2006 - link

    I love Gary can't we get him writing articles people will read? Intel/biostar - common.. you'll get 1000 page hits max and 3/4 of them are because Gary wrote it!:P
  • Googer - Thursday, February 16, 2006 - link

    Not too bad if you want a P4, but for me I am avoiding nVIDIA Chipsets except when it comes to AMD products. Go Go ULi!
  • DigitalFreak - Thursday, February 16, 2006 - link

    Uh, you mean Go Go Nvidia, since they own ULi now...
  • Googer - Thursday, February 16, 2006 - link

    Finaly Intel Gets Hypertransport on their chips, like it or not HTT probably is becoming a standard that Intel might have to adopt sooner or later.
  • DigitalFreak - Thursday, February 16, 2006 - link

    This has nothing to do with Intel. Nvidia uses HT to communicate between their north and south bridges. They've done it with all their Intel chipsets so far.
  • Googer - Thursday, February 16, 2006 - link

    Since the noth bridge has HTT, in theory you could connect an nVIDIA based nFORCE north bridge to a ULi or nVIDIA AMD north bridge and have one of several things:

    1) A dual CPU system- One Intel Pentium M/4 and One AMD 64 CPU running on the same motherboard simultaniously. The OS might need to be re-written so that multi-threaded applications only use one processor. Linux prehaps?

    2) AMD 64 Could get Quad Channel RAM higher.

    3) You could ADD a ULi M1567 Southbridge to get True AGP with that PCI-express SLI.

    4) You could possibly mix and match chipsets. VIA K8T8xx with one of AMD's north/south bridges and an nFORCE Intel Editon.

    You could possibly Connect the AMD 64 Directly (using it's own HTT link) in to the the P4 north bridge with no need to use the chipset designed for the A64.


    HTT on Intel means a whole new world of possibilites!
  • Furen - Thursday, February 16, 2006 - link

    Huh? How is Intel getting hypertransport on its chips? HT is a standard but I dont think Intel will ever adopt it because of its pride, more than anything else. It truly doesn't matter though, since HT is just a data transport and using any other data transport gives you the same results as long as it is used in a similar configuration.

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