Lower Quality Performance

Our editorial comments about Oblivion aside, some gamers will attempt to play games like this and Rise of Legends on budget 128 MB cards. This is their God-given right, and we've included some special tests for the slowest of our cards, the Sparkle 7300 GS Ultra 2 at even lower quality settings for Oblivion and Rise of Legends. This is so that we can get an idea of the performance we might expect in games like these with just the most basic graphical elements enabled.

The quality settings in Oblivion for these tests were the same as listed for the normal performance tests, except with HDR effects turned to "off." In Rise of Legends, we set the performance slider exactly halfway between the two choices: "run faster," and "look better." This turns down settings like shadow and special effects details.

Low Quality Results
800x600 %Improvement 1024x768 %Improvement
Oblivion Town Low Quality 42.8 67.84% 33.6 70.56%
Oblivion Gate Low Quality 23.9 47.53% 17.4 51.30%
Rise of Legends Medium Quality 22.1 92.17%

For reference, in the town benchmark, the Sparkle card got 25.5 fps at 800x600 and 19.7 fps at 1024x768 in the normal performance tests (with HDR on). In the oblivion gate benchmark, the card got 16.2 fps at 800x600 and 11.5 at 1024x768. This shows us the kind of performance demands that just something like HDR lighting adds to the game. In Rise of Legends, the framerate we got at 1024x768 for the Sparkle 7300 GS Ultra 2 was 11.5.

Both of these games obviously see large improvements in performance with these lower settings as the table shows. While Rise of Legends becomes playable by turning down the graphics settings, this card still has trouble running Oblivion even at 800x600. For those determined enough to run this game on a card like this, it is technically playable, but again we recommend waiting until you've saved up at least enough money for a card like the 7600 GT or X1900 GT.

Oblivion Power & Heat
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  • Josh Venning - Thursday, August 31, 2006 - link

    I also forgot to mention that some people use their pcs in home theater systems as well. This would be another case when you want as little noise from your computer as possible.
  • imaheadcase - Thursday, August 31, 2006 - link

    That was not always the case, my 9700 Pro i still use when fan went out a year ago, works like a charm without it on. It was in its time the high end card, lets hope those days come buy again :D
  • eckre - Thursday, August 31, 2006 - link

    What a great review, when tom did their silent VC review, they included a grand total of three cards...pfft. nice job anand.

    I have the 7600GT, very sweet and 0dB is oh so nice.
  • Josh Venning - Thursday, August 31, 2006 - link

    We just wanted to say thanks all for your comments and we are still trying to make sure we've caught any errors. (there are actually only 20 cards in the roundup and not 21) As Derek said, these cards were included in the article because we requested any and all silent cards that any of the manufacturers were willing to give us to review. That's also why we have more cards from ASUS and Gigabyte than the others.
  • Olaf van der Spek - Thursday, August 31, 2006 - link

    quote:

    If a general purpose CPU can offer a 40% improvement over its predecessor (Pentium D) while consuming 40% less power on average, why can't a GPU revolution accomplish the same thing?


    Because the videocard industry hasn't introduced such a bad design as the netburst architecture.
  • epsilonparadox - Thursday, August 31, 2006 - link

    No they've introduced worse. When they recommend a second PS just for grafx or even a 1Kw single PS, they've taken intel's lack of thermal control to a whole new level.
  • DerekWilson - Thursday, August 31, 2006 - link

    graphics cards use much much less power in 2d mode than in 3d mode -- and even their 3d power saving capabilities are really good.

    this is especially true when you consider the ammount of processing power a GPU delivers compared to a CPU.

    Theoretical peak performance of a current desktop CPU is in the 10-15 GFLOPS range at best. For a GPU, theoretical peak performance is at least one order of magnitude larger reaching up over 200 GFLOPS in high end cases.

    I'm not saying we can reach these theoretical peak rates on either a CPU or a GPU, but a GPU is doing much much more work under load than a CPU possibly could.

    Keep in mind we aren't even up to GHz on GPU cores. On the CPU front, Intel just shortened the pipeline and decreased clock speeds to save power -- doing more work in one cycle. This is absolutely what a GPU does.

    And the icing on the cake is the sheer options on the silent GPU front. Neither AMD nor Intel make a fast desktop CPU that can be (easily) passively cooled. These parts are a testiment to the efficiency of the GPU.

    On the flip side, ATI and NVIDIA push their high end parts way up in clock speed and power consumption trying as hard as possible to gain the performance crown.

    There are plenty of reasons GPUs draw more power than a CPU under load, but a lack of thermal control or inefficient desing is not one of them. It's about die size, transistor count, and total ammount of work being done.
  • JarredWalton - Saturday, September 2, 2006 - link

    I disagree with Derek, at least in some regards. The budget and midrange GPUs generally do a good job at throttling down power requirements in 2D mode. The high-end parts fail miserably in my experience. Sure, they consume a lot less power than they do in 3D mode, but all you have to do is look at the difference between using a Radeon Mobility X1400 and a GeForce Go 7800 in the Dell laptops to http://www.anandtech.com/mobile/showdoc.aspx?i=276...">see the difference in battery life.

    In 2D mode, graphics chips still consume a ton of power relatively speaking -- probably a lot of that going to the memory as well. A lot of this can be blamed on transistor counts and die size, but I certainly think that NVIDIA and ATI could reduce power more. The problem right now is that power use is a secondary consideration, and ATI and NVIDIA both need to have a paradigm shift similar to what Intel had with the Pentium M. If they could put a lot of resources into designing a fast but much less power-hungry GPU, I'm sure they could cut power draw quite a bit in both idle and load situations.

    That's really the crux of the problem though: resources. Neither company has anywhere near the resources that AMD has, let alone the resources that Intel has. Process technology is at least a year behind Intel if not more, chip layouts are mostly computer generated as opposed to being tweaked manually (I think), and none of the companies have really started at square one trying to create a power efficient design; that always seems to be tacked on after-the-fact.

    GPUs definitely do a lot of work, although GFLOPS is a terrible measure performance. The highly parallel nature of 3D rendering does allow you to scale performance very easily, but power requirements also scale almost linearly with performance when using the same architecture. It would be nice to see some balance between performance scaling and power requirements... I am gravely concerned about what Windows Vista is going to do for battery life on laptops, at least if you enable the Aero Glass interface. Faster switching to low-power states (for both memory and GPU) ought to be high on the list for next-generation GPUs.
  • DaveLessnau - Thursday, August 31, 2006 - link

    I'm wondering why Anandtech tested Asus' EN7800 GT card instead of their EN7600 GT. That card would be more in line with Gigabyte's 7600 GT version and, I believe, is more available than the 7800 version. In the near future, I'd like to buy one of these silent 7600GTs and was hoping this review would help. Oh, well.
  • DerekWilson - Thursday, August 31, 2006 - link

    you can get a really good idea of how it would perform by looking at Gigabyte's card.

    as I mentioned elsewhere in the comments, we requested all the silent cards manufacturers could provide. if we don't have it, it is likely because they were unable to get us the card in time for inclusion in this review.

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