Memory Test Configuration

It was demonstrated in Conroe vs. AM2: Memory & Performance that DDR2 memory performance, in timings and voltage, are equivalent on the AM2 and Core 2 Duo platforms. However, the first generation of AM2 on-processor memory controller does not support any memory timings below 3, where the Intel platform supports 2 settings for RAS-to-CAS and RAS Precharge. In addition AM2 boards do not currently support DDR2-1067 as a memory speed option, which makes it more difficult to test some of the newest DDR2 memories rated at DDR2-1000, DDR2-1067, DDR2-1100, or even higher. For all of these reasons, the Intel platform is the current test platform for DDR2 memory. Specifically, Core 2 Duo Extreme, which has available memory ratios both up and down, is the platform of choice. When changes are made in the AM2 and Core 2 Duo markets in the future the memory test platform will be examined again.

The ASUS P5W-DH is the latest 975X board in the ASUS family and it fully supports the Core 2 processors. The P5W-DH Deluxe therefore replaced the P5W-D2-E premium used in past DDR2 reviews. A review of the updated ASUS P5W-DH Deluxe is available in the Conroe Buyers Guide. The P5W-DH features similar memory options to the earlier versions. Since most of the Core 2 Duo/Extreme processors run at a quad-pumped FSB of 1067 (base 266), the available options are particularly useful for benchmarking when a Core 2 chip powers the system.

Memory Configuration Options/ASUS P5W-DH Deluxe Motherboard
  Auto DDR2-400 DDR2-533 DDR2-667 DDR2-711* DDR2-800* DDR2-889* DDR2-1067*
FSB-1067 X X X X X X X X
FSB-800 X X X X   X    
FSB-533 X X X          

Our memory test bench uses the following components:

Memory Performance Test Configuration
Processor Intel Core 2 Duo X6800
(x2, 2.93GHz, 4MB Unified Cache)
RAM 2x1GB Super Talent DDR2-1000
2x1GB TEAM DDR2-1000

2 x 1GB Corsair CM2X1024-6400C3
2x1GB OCZ Ti Alpha PC2-8000 VX2
Hard Drive Hitachi 250GB SATA2 enabled (16MB Buffer)
Video Card 1 x EVGA 7900GTX - All Standard Tests
Video Drivers NVIDIA 91.47
CPU Cooling Tuniq Tower 120
Power Supply OCZ PowerStream 520W
Motherboard ASUS P5W-DH Deluxe (Intel 975X)
Operating System Windows XP Professional SP2
BIOS AMI 1407 (October 2, 2006)

It is almost useless to compare benchmarks with Conroe to older results with Intel Presler processors - since Core 2 Duo is as much as 35 to 40% faster than Presler. Therefore, the only results shown in this review are DDR2 memories tested on the X6800 platform. Previously reported timings and voltages are still useful and can be compared to new results, but performance results on Core 2 are the only DDR2 test results compared in this review.

Memory Specifications Stock Memory Performance
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  • PeteRoy - Tuesday, October 10, 2006 - link

    Anandtech you should really stop using these graphs, their a pain to read.
  • Wesley Fink - Tuesday, October 10, 2006 - link

    Would you prefer the bar graphs like we used in past memory reviews? If so, let us know.
  • imaheadcase - Tuesday, October 10, 2006 - link

    Yes stop using these graphs. Whats the point of putting squiqly lines on a graph if the performance is pretty close to equal on memory tests you can't notice a diffrence visually? It would be diffrence if your comparing perfomance based on early computers to the latest computer..you could see a change.

    Stick to the bars plus numbers graphs please.
  • Frumious1 - Tuesday, October 10, 2006 - link

    You people are friggin morons! "Oh noes! We can't read the graph! Please make a goddamn huge ass page with EIGHTEEN graphs instead of three useful charts!" They even give you the numbers at the bottom - is it THAT HARD!?!? Well, for you two, probably, but PLEASE AnandTech, stick with charts like this where it makes sense.

    Allow me to demonstrate how much less desirable separating the data would be, by using as an example Half-Life 2: Lost Cost. Here you go, all 6 settings put into in-duh-vidual charts:

    http://i115.photobucket.com/albums/n284/frumious1/...">DDR2-400
    http://i115.photobucket.com/albums/n284/frumious1/...">DDR2-533
    http://i115.photobucket.com/albums/n284/frumious1/...">DDR2-667
    http://i115.photobucket.com/albums/n284/frumious1/...">DDR2-800
    http://i115.photobucket.com/albums/n284/frumious1/...">DDR2-1067
    http://i115.photobucket.com/albums/n284/frumious1/...">Maximum Performance (OC)

    Isn't that GREAT!? I mean, now we can't easily see how performance is affected going from DDR2-400 to 533 to 667, etc. If you want to whine about non-zero-based charts, whatever. Mine are zero-based, and as you can see there's not a whole hell of a lot of difference past DDR2-800. In fact, there's not much of a difference from DDR2-400 through maximum OC performance... 8.8% more performance from minimum (Super Talent DDR2-400) to maximum (OCZ/Team Highest). Great!

    Know what? ALL OF THAT DATA WAS ALREADY CLEARLY VISIBLE IN ONE CHART!

    Please, go back to junior high and retake some of those math classes, because clearly they didn't stick.
  • theprodigalrebel - Tuesday, October 10, 2006 - link

    I see nothing wrong with the graphs in this article. For instance, I see a green line (TEAM) stand out at DDR2-667 for the first two tests & stand out again at DDR2-533 in Q4. It is more or less tied with the others. This is useful information. I don't care about 1-3% differences (which could very well be nominal variance) - that means, just buy whatever is cheaper.

    Why would I need bar graphs that detail performance variances as tiny as .16 frames per second?
  • imaheadcase - Tuesday, October 10, 2006 - link

    Most people would rather glance and pure numbers than any graphs. You would take LESS space than what they use now.
  • Shortass - Tuesday, October 10, 2006 - link

    Well the graphs are certainly a little harder to read than large bar graphs, but I enjoy them more since it compresses a lot of information into a smaller space and you can see on one graph the entire set of tests (easier comparison and taking a few extra seconds to read the data is much better than scrolling down a massive page trying to remember the numbers each scored at different speeds, etc).
  • Guuts - Tuesday, October 10, 2006 - link

    It would be nice if you could include some "value" RAM in with these performance RAM reviews for comparison. Instead of just talking about how you need to use fairly decent timings if you want to run the modules at 1067 to see a performance advantage, why don't you add in some actual value DDR2-800 RAM that maybe can only run 5-5-5 @ 1067 and 4-3-4 @ 800 (or whatever they can do these days) so we can see just how much performance we're going to lose if we want to save 100$ on RAM? Just how much performance is lost by having looser timings at the same speed?

    I love performance parts, and want the best components I can afford, but I can't justify paying 50% more for a 5% increase in performance (or +5 FPS) that I'm never going to even be able to notice in real-world use. Note that I said that *I'M* not going to notice, before you start flaming me...

    Good article though!
  • deathwalker - Tuesday, October 10, 2006 - link

    Careful guy...there are flaming hound-dogs just lurking around out there waiting for value minded people like you and I. But in defense of the article it was not created with the intent to satisfy that niche. Check out this AT article for some value ram suggestions..http://www.anandtech.com/mb/showdoc.aspx?i=2797">http://www.anandtech.com/mb/showdoc.aspx?i=2797
  • Guuts - Tuesday, October 10, 2006 - link

    Yes, thanks, I've read that one... increasing the voltage and loosening tbe timings on DDR2-667 is a little TOO value. I was basically asking what one could do with some value DDR2-800 running at 1067 and how much of a performance hit would be incurred by the loose timings you'd have to use, or even the performance of value DDR2-800 with 4-4-4 timings.

    Sure that article shows what you could do with that Value RAM as far as pushing the speed and tweaking the timings, but I don't see any performance numbers, nor any comparisons between different timings at the same speeds...which seems pretty important since the price of memory starts to really climb the tighter the timings are at a certain speed. I'd just like to know how much performance one loses between 3-3-3, 4-4-4, and 5-5-5 with DDR2-800, for example, because I sure know how much the price difference is.

    I can see the small difference in the TEAM memory vs. the slightly looser timed Super Talent memory, but I can't remember ever reading about the performance differences between more widely varied timings and was curious to see just how much of a hit it makes on the new Core 2 Duo platforms...especially with memory prices what they are today, and 2GB kits seemingly being the recommended "standard" configuration in new systems.

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