AMD 690G: Performance Review

by Gary Key on March 6, 2007 8:00 AM EST
Audio Encoding Performance

While the media encoding prowess of the Intel platform seemed to be lacking at times, we expect it to fair a little better on the audio side. Our audio test suite normally consists of Exact Audio Copy v095.b4 and LAME 3.98a3. We did run these tests with basically the same results but for our purposes today we will utilize iTunes 7.1 as it is one of the most utilized audio applications available due to the immense popularity of the iPod.

Our first task was to figure out what test CD to utilize. We needed one that contained a significant number of tracks and had over 600MB of data in order to properly stress our platforms. After rummaging around the lab and discounting the Burl Ives Greatest Christmas Hits album, we happened upon a CD that would work for our purposes as it was not working for anyone else, INXS Greatest Hits. This one time '80s glory masterpiece contains 16 tracks totaling 606MB of songs that was instantly whisked into our anxiously awaiting optical drive.

Our first test consists of utilizing iTunes to rip our INXS CD to WAV format on our hard drive. Even though CPU speed and optical drive selection have a great impact on these test results we are using the same optical drive between platforms for each test.

Audio Encoding Performance - iTunes 7.1

Our two AM2 platforms score slightly ahead of our Intel setup but the margin is minimal. This test was very consistent with each result never varying more than one second from the base score. Unlike the Nero Recode 2 DVD burning test, in this case our AMD systems did not suffer from drive issues.

Our next two tests have us utilizing iTunes to convert our WAV files into ACC or MP3 compatible formats. We utilize the 320kbps setting for both tests with the MP3 test also utilizing the variable bit rate option.

Audio Encoding Performance - iTunes 7.1

Audio Encoding Performance - iTunes 7.1

We usually see iTunes favoring the AM2 platforms in most test results. The results are no different here with both AM2 systems completing the ACC conversion about 50 seconds before the Intel system. In our MP3 conversion, the Intel system places second but the general differences are minimal. We attribute the 6150 performance to better storage controller and CPU throughput although standard memory bandwidth is lower than the other two boards.

Our final test has us creating a legal use copy CD from the base WAV files we collected when ripping the INXS Greatest Hits CD. Not that the world needs anymore of these CDs but it makes for a good closing test. We promise all CDs are destroyed after testing (much to the pleasure of our ears and those at the RIAA).

Audio Encoding Performance - iTunes 7.1

Once again our test results are extremely close with the optical drive playing a leading role in ensuring our results are fairly close. The minor differences are all attributable to the better disk performance of the NIVIDA 6150/430 combination in this case. We noticed each time that the disk access stopped about two to three seconds quicker with the 6150 platform. This is opposite of our Video Encoding results where each of our AM2 platforms could not keep the optical drive fed properly over the course of a burn session.

Media Encoding Performance Media Performance
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  • chucky2 - Wednesday, March 7, 2007 - link

    BlingBlingArsch of the AnandTech forums linked to some pictures of the board, and there's one of the back panel I/O: http://img256.imageshack.us/img256/5498/board234cx...">http://img256.imageshack.us/img256/5498/board234cx...

    Looks like there's definitely no Firewire... :( :( :(

    What are these manufacturers thinking (or rather not thinking) not including Firewire on this boards? These would be totally complete solutions, especially this Abit with the optical out it has, if they'd only have Firewire on them...

    ...and the expansion is so limited, putting in an add-in Firewire basically kills for TV tuner, capture, etc. additions.

    Man...talk about something that's almost perfect that gets ruined by either a poor design decision or a poor bean counter decision... :(

    Chuck
  • Myrandex - Wednesday, March 7, 2007 - link

    "The 6150 performs okay considering the age of its core and we will see the new 6150SE and older 6100 chipset performing a few percent better overall but not enough to catch the 690G."

    How would the 6100 be a few percent better when it is clocked lower?
  • Renoir - Tuesday, March 6, 2007 - link

    The review over at http://www.bit-tech.net/hardware/2007/03/02/amd_69...">Bit-tech.netsays the 690G supports dual-link DVI and confirmed as much by sending 2560x1600 over DVI to the dell 30incher. This review however says "Larger 30" flat panel monitors won't be able to run at native resolution" and the technology overview article says "The digital outputs use TMDS transmitters that run at 165MHz". What's the deal?
  • Gary Key - Wednesday, March 7, 2007 - link

    The 690G supports Dual-Link DVI. We had stated this on page two but not in a separate section. I will reword the 2D paragraph to make this clear. As for the resolution, I am using a Samsung 30" panel and the current Vista drivers limit me to 2048x1536. I have sent a board to Jarred who has the Dell 30" to test on it. AMD still confirms that 2048x1536 is the "current" max resolution although we know the hardware has 2560x1600 capability according to one of our sources.
  • Renoir - Wednesday, March 7, 2007 - link

    Hmmm something's not quite right it seems. Can't see why they were able to send 2560x1600 if you couldn't. Would definitely appreciate Jarred checking it on the dell although I'd be surprised if it was a monitor issue. Who knows without trying. Have asked bit-tech what os they were using to get it to work. An XP vs Vista issue perhaps? The related paragraph in the technology overview article mentions the TMDS's run at 165mhz which I understand is single-link? Have seen the 165mhz listed elsewhere for the 690G so am curious where this info comes from if the chipset is dual-link? Unless I've misunderstood something about "165mhz"?
  • Gary Key - Wednesday, March 7, 2007 - link

    The DVI spec transmits data using the transition minimized differential signaling (TMDS) protocol. The DVI spec calls for each DVI output to have at least one TMDS “link” consisting of three data channels (RGB) and one control channel. The maximum speed at which a single 10-bit TMDS link may operate at is 165MHz, offering 1.65Gbps of bandwidth. In real world terms, this means a single 10-bit TMDS link can drive a display at up to 1920 x 1200 (the actual maximum resolution can vary depending on the panel, spec is 1920x1080). For most displays that’s not a problem, but the 30” Displays have a native resolution of 2560 x 1600, which exceeds the bandwidth a single TMDS link can deliver. So what do you do? Remember that the DVI spec calls for at least one TMDS link, but each DVI port can support up to two TMDS links (the 690G has dual TDMS links), thus doubling the maximum bandwidth and enabling support for a 30" (if driver support is present) display or even some of the new 27" units that can run at 2048x1560.
  • Renoir - Thursday, March 8, 2007 - link

    Thanks for the reply Gary. That was precisely my understanding of the situation which is why I found the following quote from the technology overview article confusing "The digital outputs each use TMDS transmitters that run at 165MHz." This sentence didn't come across as saying the digital outputs had 2 TMDS "links" but rather just 1 running at 165mhz (hence single-link). Perhaps you could reword it to explain that each link runs at 165mhz but that there are actually 2 links in order to support the higher resolutions afforded by dual-link DVI. Don't mean to be picky just think this part could be a little clearer :-)
    As for the resolution cap at 2048x1536 you guys are experiencing the Bit-Tech guys have confirmed they got 2560x1600 working on XP and suggest your problem is an issue with the current vista drivers.
  • Gary Key - Thursday, March 8, 2007 - link

    I have a new Vista driver as of today.

    Here are the specs -
    DVI - Supports dual link up to 2560x1600.

    HDMI - maximum resolution supported is 1920x1080 (using a HDMI-DVI cable
    you can go up to 1920x1200)

    VGA- Maximum resolution support depends on monitor refresh rates and aspect
    ratios:

    2048x1536 @ 85 Hz in 4:3 format
    2560x1440 @ 75 Hz in 16:9 format
    2728x1536 @ 60 Hz in 16:9 format
    2456x1536 @ 60 Hz in 16:10 format

    Hope that helps.
  • Renoir - Thursday, March 8, 2007 - link

    That's cleared that up then (was merely a driver issue). Anyhow 2 questions

    1) Both digital outputs support HDCP but are on separate display controllers. Does that mean they have 2 built in cryptoroms (1 for each controller) given that separate cryptoroms are required for each controller/output? If they do have 2 then why only allow HDCP on one output at a time?

    2) In a related point (upcoming mobile version of chipset) what connection do laptops use internally for their screens? The reason I ask is I'm interested in getting a laptop in future which supports both hdcp for the laptop screen but also via an external digital connection to a larger display.
  • jonman03 - Tuesday, March 6, 2007 - link

    I know its onboard video and stuff, but a 3D Mark06 score of 313? They should be able to better than that, see who can get it into the 1000's first. Although unlikely, it'd be a nice alternative to buying a video card for a basic computing system.

    http://www.plugcomputers.com">Custom Gaming Computers

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