Final Words

To give a brief summary of performance, we have the ASUS EN7800 GT Top Silent as the obvious leader followed by the Gigabyte 7600 GT in second place. Depending on the game, the next best card in terms of performance is either one of the Gigabyte, MSI, EVGA, and ASUS 7600 GS cards or either of the ASUS and Gigabyte X1600 XT offerings/ The factory-overclocked Gigabyte 7600 GS scores slightly better than the rest of these, making it the overall third fastest silent card. The next step down would be the ASUS EN6600 GT Silencer, followed by the Gigabyte and Albatron factory-overclocked 7300 GTs. Depending on the game and settings, the HIS and Gigabyte X1600 Pro might do a little better or worse than the reference-clocked MSI NX7300 GT (better generally in Splinter Cell Chaos Theory and Rise of Legends, and worse in most of the other games). Then at the low end you have the HIS and Gigabyte X1300 Pro followed by the Gigabyte 7300 GS. Again in Splinter Cell and Rise of Legends, the Gigabyte X1300 performs slightly better than the Sparkle 7300 GS Ultra 2, and in most of the other games the Sparkle 7300 GS performs the worst.

In terms of Overclocking, the MSI 7300 GT and the Gigabyte X1300 stood out with high core and memory overclocks (135MHz core clock increase in the MSI 7300 GT, and 160MHz core and 55MHz memory clock increase for the Gigabyte X1300) resulting in large performance increases in Oblivion and Battlefield 2 for these cards. The Gigabyte 7600 GS, in spite of already having a 50MHz core overclock, managed to go up nearly 100MHz on the core clock which was an impressive feat for this card. The Albatron 7300 GT is another factory-overclocked card that got a particularly high core and memory overclock: 102MHz higher in the core and 84MHz in the memory clock. The Gigabyte X1600 Pro got a decent 80MHz increase in the core clock and the HIS version of the same card got an even better 97MHz increase in the core. These were some of the examples that stood out when overclocking these silent GPUs.

Some people might have strong feelings about ATI or NVIDIA hardware and drivers, but we feel they are close enough - especially in single GPU solutions - that you can safely go with whatever card offers the most performance at your chosen price point. Both ATI and NVIDIA have certain strengths and weaknesses depending on things like which game and/or settings are concerned, and both have parts to suit most any gamer's needs. In this review, however, we've seen that prices tend to favor NVIDIA cards, particularly with the Gigabyte 7600 GS. This card is simply put a better value than any of the ATI parts. The X1600 Pro is about $15 less, but it can't compete with the Gigabyte 7600 GS, especially considering the card's factory-overclock.

Dealing with such a large number of cards in a roundup of this type can be a bit of a headache, and it's easy to lose track of which cards are which when testing them all. However, after lots of testing, it's interesting to notice how certain cards begin to stand out in a positive or negative way. Not surprisingly, the ASUS EN7800 GT Top Silent stood out at the beginning because of its high level of performance compared to the other cards. The Sparkle 7300 GS Ultra 2 stood out as being one of the slowest and one of the more frustrating cards to test. With the exception of the issues in Battlefield 2, it performed just as would be expected for a card of this type, but we wouldn't recommend the 7300 GS solutions overall. Gigabyte impressed us initially with the sheer number of silent cards they contributed for this article, but they also impressed us later with the quality of their cards and their normal and overclocked performance.

The Gigabyte 7300 GT and Albatron 7300 GT did well in performance testing, but how good these cards actually are depends a lot on the price. Given that the Gigabyte 7600 GS is about $110 it doesn't make much sense to spend only about $10 less for the 7300 GT card. Whether the 7600 GS is a great bargain or the 7300 GT cards cost too much, the conclusion is that paying the extra $10 for the Gigabyte 7600 GS card is the best choice. We would also rule out buying any of the other 7600 GS cards in this review, given the fact that the Gigabyte 7600 GS comes factory clocked higher than any of the others, and is cheaper by anywhere from about $5 to $20. If you don't mind spending about $170, the Gigabyte 7600 GT isn't a bad choice for a silent graphics solution, as it is the second fastest GPU tested and it is actually readily available.

If you only want to spend about $70 on a silent graphics card, the MSI NX7300 GT is a good choice, especially if you plan on doing any overclocking. We recommend this card over the Gigabyte X1300 Pro, which is about the same price but doesn't perform quite as well in most games. For those that don't really play many games or just want a really cheap silent video card, the Gigabyte X1300 is the cheapest card in this group at $52 and will offer basic graphics functionality without making a sound. It's going to be two to four times faster than most integrated graphics solutions, but it will still have trouble running any of the more recent games (like Battlefield 2) at anything but the lowest graphics settings. Without concrete pricing information on many of the other cards, these are our recommendations. None of the tested cards are bad, but given the competition between ATI and NVIDIA as well as the various card manufacturers, it's not surprising that a few of the offerings stand out as being better than others.

We keep coming back to a single card that strikes the best balance of price and performance. Coming in as the third fastest silent GPU overall and with a price of only $110, we are pleased to award the Gigabyte 7600 GS our Gold Editors Choice Award for Silent GPUs. With a factory overclock of the 7600 GS core and a price lower than competing solutions, there is much to like with the Gigabyte card. It is also a single-slot solution unlike some of the other Gigabyte offerings, making it a card that can work well in HTPCs as well as SFF computers. Our only request now would be for someone to figure out a way to offer a similar price/performance ratio with a faster GPU, though perhaps we're simply being greedy. The Gigabyte card does just about everything right within it's price range, and for that they are to be commended.

If pure performance (and current availability) is the more important factor, only one card fits the bill. It is with this in mind that we bestow our Gold Editors Choice Award upon the Gigabyte 7600 GT. With a comfortable performance boost that comes with the 55% higher cost over the Gigabyte 7600 GS, we can absolutely recommend the 7600 GT for gamers who are happy with midrange performance and need a quiet card. At a cost on par with actively cooled parts of the same class, we feel comfortable recommending the Gigabyte 7600 GT over other 7600 GTs as well.



All of these cards offer acceptable performance for non-gaming tasks, and most will at least handle some moderate gaming. More importantly, this is all done while remaining completely silent. Looking at the power and heat results of the various cards, we are interested in seeing what the future holds for silent GPUs. It is doubtful that anyone will create a passively cooled 7900 GTX, 7950 GX, X1900, or other high-end card in the short term. However, Intel has raised the bar on expectations for performance per Watt. 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? Maximum performance may continue to require at least some form of active cooling, but hopefully ATI and NVIDIA can further refine their designs to be more power friendly in the future. With Windows Vista increasing the demands placed on GPUs, the desire to reduce GPU noise levels is only likely to increase.

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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