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-655 AC97 audio codec was tested with the recently released 3.84 driver set. The Realtek DirectSound audio drivers do not support more than 26 hardware buffers and the OpenAL 1.1 drivers do not support more than 23 hardware buffers at this time, so the scores cannot be directly compared to the Realtek ALC-882, HDA Mystique 7.1, and Creative Labs Sound Blaster X-FI solutions 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-655 AC97 audio codec has average CPU utilization rates with reductions of up to 4% 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, though the audio quality of the Mystique is definitely better when watching movies or listening to music. The Realtek ALC-655 performance is decent, but it does not match the audio quality of the ALC-882 HD audio codec. The Sound Blaster X-FI has the lowest overall rates as expected. Let's find out how these results translate into real world numbers.

Game Audio Performance - Serious Sam II - Branchester Demo

Game Audio Performance - BattleField 2

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

The audio performance numbers remain consistent as the Realtek ALC-655 continues to finish near the HDA Mystique 7.1 and SoundBlaster X-FI. Serious Sam II suffers a loss of 43%, Battlefield 2 at 21%, and F.E.A.R. at 4%. The output quality of audio with the Realtek ALC-655 is decent, but in no way compares to the HD audio codec's or most discreet audio solutions. The majority of home/office users should have no issues utilizing the ALC-655, but we would not recommend it as the primary audio solution for serious gaming or in an HTPC system, considering the overall quality of audio. Then again, we would not recommend this board as a gaming or HTPC solution anyway due to its performance.

The Realtek 3.84 driver installation installs a basic control panel that features a built-in 10-band equalizer along with the standard mixer and speaker controls. We found the control panel to be user friendly and a definite improvement over the standard windows audio properties application.



AGP 3.0 Performance Final Words
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  • Myrandex - Tuesday, March 21, 2006 - link

    I don't know of any desktop level chipset supporting 6 slots, you are being unrealistic here. 4 is about the most you could hope for.

    4x PCiE is disapointing.

    Jason
  • DigitalFreak - Monday, March 20, 2006 - link

    Another crap chipset from a crap vendor.
  • Marlin1975 - Monday, March 20, 2006 - link

    Set the memory to 166MHz before trying to overclock. I found this worked best and got me past 205MHz FSB setting. But at 200Mhz memory (ddr1) it would hold or freeze.

    I have had an Asrock and a Asus PT880 pro board and both worked well. I now have the Asus with an 805 chip. The Asus board has the best sound from all the PT880 pro boards I have seen so far and that is why I gave up the Asrock. Also since the 805 chip starts at 133MHz fsb overclocking seems to work better. That and the 805 would be a better choice to review this type of board based on price. So how about trying the Asus with a 805, or even this biostar with a 805.

    Marlin
  • Gary Key - Monday, March 20, 2006 - link

    quote:

    Set the memory to 166MHz before trying to overclock. I found this worked best and got me past 205MHz FSB setting. But at 200Mhz memory (ddr1) it would hold or freeze.


    We tried the 166MHz level and were able to overclock at the 14x multiplier up to a 215FSB but the board was not stable enough to complete our benchmark tests and would generate a ream of errors in MemTest86. We also tried the 15x muliplier with the same results. This issue occurred with two different bios revisions also. We believe either our board or the bios just has an issue with running the CPU at a multiplier other than stock.

    While a Pentium D 805 or a newer Celeron D CPU is the most likely CPU candidate along with an 6600GT or X800 video card for this board we did not have the schedule time to go back and test the other boards with these configurations. In fact, our Intel platforms will be moving away from the 840EE after the next review and to a more recent Pentium D processor along with a change in the GPU choice.

    Thank you for the comments and suggestions.
  • hans007 - Monday, March 20, 2006 - link

    i think you guys "the reviewers" made a pretty crappy choice of video cards to benchmark this with.

    this board is clearly meant for someone who is say ... just trying to do a budget upgrade, not someone who can afford a x1900xtx or 7800gtx.

    the benchmark scores make it look like an awful board because of the x4 slot limiting the video bandwidth. i think if you benched it with a more realistic bunch of cards such as say 6600gt, or 6800gs etc, it'd be much closer as those cards are probably not as affected by the x4 slot.
  • Visual - Monday, March 20, 2006 - link

    well, we know the regular excuses about this - the card is the same as all other reviews so that results can be comparable, and so the reviewers don't need to actually run tests with other boards (they already have the scores ready)

    also, i can imagine someone using a board like this if they want to stick with their AGP card for the time being, especially if its one of the fastest models. and later they would upgrade to something fast on the PCIe and expect a good performance, so its good that the review shows that isn't the case.

    for people simply going budget, this board doesn't make sense. none of the "combo" features are really needed if you go with a cheap pcie vidcard and a small ddr2 stick.

    i was actually surprised someone bothered to make a board like this - intel moved to ddr2 ages ago and i can hardly see anyone needing ddr mobos by now... and even if they did there are plenty of ddr mobos already. and pcie is the standard for quite some time now... it would've made sense right after the intro of pcie, when someone might've wanted to stick with their expencive 6800gt, but now those agp cards are just not worth keeping for the "slow upgrade" route.
  • jm20 - Monday, March 20, 2006 - link

    n the performance area, the Biostar TForce4 U 775 generated abysmal benchmark scores in the gaming and media encoding areas.

    Typo, "Biostar PT880 Pro-A7" is the correct model

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