The ATI Xpress 200 Chipset Family

At the heart of all the new chipsets and boards is Radeon Xpress 200, whether single GPU or Dual GPU, with integrated graphics or with discrete graphics only. You can find more information on Radeon Xpress 200 in ATI Radeon Xpress 200: Performance, PCI Express & DX9 for Athlon 64. The North Bridge chips do vary between AMD and Intel solutions, but any of the North Bridge chips can be combined with one of several South Bridge chips from both ATI and ULi.

Last fall's introduction of the ATI AMD chipsets featured the SB400 south bridge. The recent introductions combine the north bridge with the ATI SB450 south bridge, which features High Definition Azalia audio for both AMD and Intel. This was the first chipset to bring High Definition audio to AMD. Recently, NVIDIA introduced the GeForce 6100 integrated graphic solution that also brings HD audio to AMD. However, NVIDIA's top nForce4 chipset, used in most enthusiast motherboards, does not support HD audio.

The SB 450 also supports PCI-e Gigabit LAN, standard SATA 150, and has improved USB burst performance compared to the earlier SB400 chipset. We will see full SATA 2 support and a completely reworked USB controller in the SB600, which will launch in the 4th quarter of this year.

The various ATI Radeon Xpress 200 north bridges can also be combined with ULi south bridges. The current ULi 1573 provides all the features of the ATI SB450 except integrated Gigabit Ethernet. This includes High Definition Azalia audio. Gigabit Ethernet can be added to the 1573 as an external chip. The ULi 1573 also supports NCQ hard drives, which are not supported on the SB450.

ULi has recently introduced the M1675 chipset, which adds SATA II 3Gb/sec to the feature set. The M1573/M1575 family are particularly interesting, since both south bridges are pin-compatible - making the upgrade to M1575 an easy task when the south bridge is finally available to manufacturers.

Index Basic Features: ATI Crossfire AMD Reference Board


View All Comments

  • Starcraftfreak - Friday, September 30, 2005 - link

    So you are saying, the Board supports the dividers for DDR500 also on a Revision C core? I can remember when you published an article explaining it's a new feature of Revision E. Please clarify. Reply
  • SLI - Wednesday, September 28, 2005 - link

    Everything I have seen thus far on the ATI chipset points to the FSB dropping to DDR333 *IF* you populate all 4 DIMM slots (with DDR400 RAM) This was an issue at the CPU level with AMD Athalon on board memory controller (at first) but has been addressed with the newer steppings. VIA and Nvidia chipsets have support for DDR400 with all 4 slots populated. This is a very important aspect to me and it needs to be addressed. Reply
  • Wesley Fink - Wednesday, September 28, 2005 - link

    It was addressed in tRAS and Memory Stress Tests in the review - p.5. We had no trouble with 4 dimms at DDR400, though we did have to drop to 2T with 4 dimms as we do on every other AMD chipset. This is more a function of the on-CPU memory controller. Reply
  • sxr7171 - Wednesday, September 28, 2005 - link

    I don't get it. We switched to SATA to get worse performance? SATA performed worse than IDE in every single benchmark. Reply
  • Scarceas - Tuesday, September 27, 2005 - link

    I'd like to know what happens when you try two 6800s in a crossfire motherboard...

    I'm also curious about what happens why you try crossfire graphics cards on an NF4 SLI motherboard...

    Early on I heard rumors that the motherboard implementation would be similar between the two and that mixing motherboard/graphics manufacturers *might* be possible...

    Now the hardware is showing up and no one has tried it?
  • vailr - Tuesday, September 27, 2005 - link

    Check: page 11 "Ethernet Performance" has format errors:">
    Copied & pasted:
    It will almost always be <em>much</em> lower than what we have measured.<br /> <br /> </span> </div> <div class="adcontainer"></div> <table border="0" width="100%"> <tr> <td align="right" colspan="2"> <table border="0" cellpadding="0" cellspacing="0"> <tr> <td><strong><a href="showdoc.aspx?i=2542&amp;p=12" class="smalllink">Audio
  • tanekaha - Wednesday, September 28, 2005 - link

    Ethernet page has same problem as b4 here
    I`m using firefox latest beta and the browser considers the page done after this line.

    Ntttcpr - m 4,0,

    I guess u use a template for these reviews I had exactly the same prob with ( and commented similarly ) with I think the asrock dual article.
    I guess not many others are getting this prob but I`m glad 2 see some! else has a prob and not just me.
    What browser are u using ?
    Wesley have u tried 2 view the article with firefox beta ? or even firefox ?
  • Wesley Fink - Thursday, September 29, 2005 - link

    Articles are created in a document engine by our Web Editor, from basic information layouts we send the Web Editor. The engine generates HTML code. We don't individually generate the code for articles. Any problems with viewing the pages should be emailed to our webmaster Reply
  • tanekaha - Thursday, September 29, 2005 - link

    Thanks for the replies gents
    I am not using any blockers or extentions .. apart from FF default pop up blocker.
    I will mail jason with the facts (as I see them)
    I`ll also send the info to the FF team
    THX again
  • JarredWalton - Wednesday, September 28, 2005 - link

    If you're using any extensions to block ads or other content, you might want to try disabling those. I've been using Firefox for over a year now, and I don't have any issues with the pages. (Some pages render improperly the first time and I need to hit refresh, but that's generally only on long pages, and it seems more of a FF bug than anything.) Reply

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