Every once in awhile, something comes along that is simply brilliant in its simplicity. For ASUS, that time could be now. ASUS plans to continue in their tradition of early adoption of new chipsets with a mid-February release of their upcoming Rampage Formula motherboard, a board that will make use of Intel's recently announced X48 Express chipset and DDR2 memory. Although DDR3 has been available for purchase for many months now, exceedingly low DDR2 prices have made purchasing 4GB or even 8GB of memory quite affordable - the latter still costing less than 2GB of good DDR3 memory. Coupled with the fact that the Rampage Formula provides a relatively easy upgrade path for current DDR2 owners, we can see why this board will be an attractive choice for anyone looking to build their next high-performance gaming system.

Like other recent offerings from ASUS, the Rampage Formula is part of the Republic of Gamers (ROG) line of motherboards, aimed squarely at the enthusiast looking to tune all levels of system control in order to extract every ounce of possible performance. We were a little surprised to see that ASUS seems to have needed very little engineering work in order to make use of Intel's higher-binned X48 chipset - the Rampage Formula and the currently available Maximus Formula (which uses the X38) share almost everything in common with the exception of the Northbridge. On one hand this makes sense, as the X48 is little more than an X38 binned for ultimate performance; on the other hand we would have liked to see a few additional improvements in component choices and layout.

Because of this, those that already own an X38 ASUS motherboard may find no compelling reason to upgrade. However, gamers ready for a complete system overhaul looking to build with the absolute best quality board should strongly consider the Rampage Formula. Compatibility was excellent with no real gripes to speak of - the board flawlessly made use of every CPU and memory kit we installed for testing. Coupled with one of Intel's new 45nm quad-core or dual-core CPUs and a pair of ATI 3000-series Radeon cards in CrossFire, this board provides a solid centerpiece for a formidable gaming rig.

We would be delinquent in not noting the impending release of the Rampage Formula's DDR3-based companion, the Rampage Extreme. We anxiously await our chance to bring you an early first-look at what it has to offer. We fully expect that it will best even the most refined X48/DDR2 board. Our experience has always been that the X38/X48 chipsets simply work better when teamed with DDR3 memory. For whatever reason, we find that for absolute ease of overclock and rock-solid stability nothing beats an X38/X48 DDR3 board. Unfortunately, DDR3 prices can be a rather large obstacle for some, especially when dealing with the higher speed bins.

For now, we are happy to report that our early dealings with the ASUS Rampage Formula have been extremely satisfying, especially considering the relatively short amount of time given to BIOS maturity. In fact, we feel there are no significant obstacles impeding the release of this board. Additionally, we must applaud ASUS for the industry-leading effort they have put forth in incorporating a few new settings into the BIOS that give the user the ability to easily unlock otherwise hidden memory performance with just a quick finger twitch.

What are these settings you ask? Simply put, the ability to select a MCH Read Delay (tRD) from within the BIOS, as well as a means for adjusting the timing of each individual memory phase associated with the selected memory divider. You may know this setting by its more common name, often referred to as "Performance Level". While some motherboard makers have been making use of these settings for quite some time, never before has it been as de-obfuscated as it is today.

Hopefully we can finally say goodbye to the frustration of blindly adjusting these settings with the hopes of achieving the desired end goal - an accomplishment we can all appreciate. Our hopes are that other vendors follow suit and work quickly to update their offerings to provide this level of control in a similar manner. For those that are interested, we will touch on the performance improvements that can be seen as well as the other implications involved with making use of these settings a little later on.

With X48, the tier one giants - ASUS included - are gearing up for another round of lightning-fast motherboard releases. It appears as though they are now simply waiting on the green flag from Intel before they release these boards to the world. The fickle-free operation and high probability of success when overclocking that comes with teaming an Intel processor with an Intel chipset makes picking up an ASUS Rampage Formula an easy choice. One thing's for sure, ASUS is on a roll, and they don't appear to be slowing down for anyone.

Board Layout, Features and Specifications


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  • Vikendios - Thursday, January 31, 2008 - link

    Very Interesting. But I believe that AT is also guilty of perpetuating the chipset/multiple GPU incompatibility (or non-optimization) myths, by not giving us systematic reviews of X38/48 and 680/790i using both ATI and Nvidia twinned cards.

    And if some BIOS adjustments or driver updates are becessary to twin Nvidia cards under Intel chipsets, or ATI/AMD cards under Nvidia's, kindly tell and guide us.

    I'm not a conspiration theorist, but I think there is more than meets the eye in the present situation.

    The apparent paradox of Intel (chipsets) pushing AMD (Crossfire) solutions is just marketing cycle hysteresis from the days when ATI was still an independent canadian company.

    But both Intel and AMD resent video card chip manufacturers forcing their way into hard-wired motherboard real estate thru the multiple GPU concept, with attendant slot and chipset modifications. With the demise of Via, Intel and AMD believe they can own the chipsets, as long as the motherboard manufacturers are only assemblers.

    For Nvidia, multiple GPU is an easy way to extend the life of a good graphic chip until the next generation comes up, but mostly it provides for a temporary proprietary claim on the motherboard design. 3dfx first tried that years ago in Voodoo days and it worked. It worked again when ATI couldn't follow up fast enough on SLI and had to fall in AMD's arms.

    Nvidia gambled that SLI would allow it to impose its own chipset business, either by technical or marketing (SLI endorsment) means. What next ? Special gaming CPU's ? That's a dangerous taunt, although Intel doesn't yet dare buy them, or compete directly with them with their own GPU's, out of anti-trust concerns in Brussels.

  • Holly - Wednesday, January 30, 2008 - link

    Excelent description of memory timing magic. Thumbs up :-) Reply
  • FSBastrd - Tuesday, January 29, 2008 - link

    I may have come off a little brash with my first comment. The article is pretty sweet, and I was able to read through it without the pictures, but that doesn't mean I wouldn't like to view them. It's not just this article either. Pictures pretty much never load on this website for me. Reply
  • kjboughton - Wednesday, January 30, 2008 - link

    Do you run some type of ad blocker? It may be causing problems by incorrectly blocking images from our servers... Reply
  • FSBastrd - Wednesday, January 30, 2008 - link

    I'm basically running a stock version of Firefox, so no. Ironically, the ads are just about the only pictures that do load for me. Also, all of the picture for the AnandTech homepage load for me, it's just the pics in the articles This is the only website that really gives me problems. One last thing, some (rare) pictures do load for me from the articles. All in all, it's quite strange, and I can't figure it out. Reply
  • FSBastrd - Tuesday, January 29, 2008 - link

    Am I the only one who can't get pictures to load from this site. It would sure make this article a whole lot easier to follow along. Reply
  • sje123 - Tuesday, January 29, 2008 - link

    Excellent review as ever!

    Quick question with regard to Watercooling blocks for this board. It looks more or less identical to the X38 apart from the different chip in the NB, therefore I'm wondering if you could tell me whether or not you think an ASUS X38 NB block would also fit the ASUS X48 Rampage?

    is the NB under the cooler the same size etc and are the mouting screws in the same position as the X38 eg the Maximus?

    THe SB and the mofset coolers will be the same as the Maximus.
  • snarfbot - Sunday, January 27, 2008 - link

    alright, pretty exciting results here.

    at trd of 8 (default) at 400mhz 1:1 cas 4, i got 7687mb/s read, and 64ns latency in everest.

    at trd of 6 at the same speed, divider and cas setting i got 8089mb/s read, and 59.8ns latency.

    then just for fun i bumped the speed upto 500 and loosened the timings to cas 5, at 5:4, i left the trd at 6. at these settings i got 8640mb/s read, and 57.5 latency.

    the latency suprised me, as the trd remained the same, and i actually loosened the cas latency.

    anyways pretty good results.

    processor is a e2140@3200mhz.
  • snarfbot - Sunday, January 27, 2008 - link

    alright, i have a ga-p35-ds3l. im running the fsb at 400, memory at 1:1 cas 4.

    i set trd to 6 in the bios. based on the formula, it shouldnt even post.

    trd(6) - tcl(4)/n(1) =fsb400(2)/1

    im gonna run through sandra and see what the difference is, if there is any, or perhaps this setting doesnt work correctly on this board.
  • Fyl - Sunday, January 27, 2008 - link

    not to lower the merits of this great article but since I've read it I've been experimenting on my machine different settings and for some of them your formula doesn't seem to stand; here's an example of a stable configuration, no overvoltage to anything:

    E8500@3.6 (400MHzx9)
    P35-DS4 (tRD 7)
    2x2G DDR2 800 (400MHz, 5-5-5-12)

    based on your formula N = 400:400 = 1 and x = 2
    therefore 7-(5/1) > 2/1 => 2 > 2 => false but actually working

    am I missing anything?

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