With a TDP of around 61W, Sapphire is reaching an upper limit on what passive cooling can do in a still-air environment.  Any more, such as a passive cooler on the 5750 (86W TDP as standard), would require significant engineering of the cooler and heatpipes to keep it passive - such as the dual slot Gigabyte HD5750 Silent Cell, which is a passive 5750, but has a massive cooling and heatpipe arrangement, as well as a 6-pin power requirement.

Featuring stock HD5670 clocks of 775MHz core, 1GHz memory (4GHz effective), 400 stream processors and 1GB of DDR5 memory, the HD5670 is marketed as the fastest silently cooled graphics card ‘available today’ - though we can’t find it on sale yet, and the Gigabyte 5750 Silent Cell is on sale, under it's code GV-R575SL-1GI.

The HD5670 Ultimate isn’t necessarily aimed at the HTPC market, as it isn’t low profile, but we could see a use in larger ‘HTPC/Home Server’ combinations, as well as mainstream desktop computers, and gaming machines, where silence is a large part of the build.  We expect the HD5670 Ultimate to retail around $125/£95, which is at a slight premium over the majority of the current HD5670 cards available.

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  • JGabriel - Thursday, June 24, 2010 - link

    Over 75W TDP just means that the card needs a a direct connection to the power supply to run; i.e., it won't run fully on just the power supplied by the PCIe slot.

    It can still be cooled passively, providing the heat sink is capable enough.

  • Aezay - Thursday, June 24, 2010 - link

    I'm referring to this sentence from the article:
    "With a TDP of around 61W, Sapphire is reaching an upper limit on what passive cooling can do in a still-air environment"
  • Phate-13 - Thursday, June 24, 2010 - link

    You have to look at the whole sentence. "... in a still-air environment", that's the key word here. Those faster GPU's, using more 'fuel', they need better cooling and without airflow, that is not possible. Higher-end products can be cooled passively, but you will need airflow in your case, to cool the cooling. ;)
  • Ninjahedge - Thursday, June 24, 2010 - link

    That is seriously sweet for those of us who love our desktops.

    The question would be, what is the maximum real estate it can manage with these 3 How would a game be played?

    Right now with 2x20" (1600x1200) my setup works really nicely for surfing, working and other things, but gaming goes 1 screen (I have tried dual on some, but they seem to put the action right at the split rather than having a graphics screen and a HUD on the other).

    3 screens reminds me of some of the "OMG" setups about 5 years ago or so. Having peripheral views for a FPS, Driving or Flight sim would be great! Problem being, 3 of what. 3 x 1600x1200 will kill just about any detail you could hope for.....

    Thing is, this could help for a 1 room office/entertainment situation, having vids on a wall screen while working on the other two........

    Ahh, the dream....... ;)
  • Taft12 - Thursday, June 24, 2010 - link

    the HD5670 is marketed as the fastest silently cooled graphics card ‘available today’ (even if we can’t find it on sale yet, nor can we find the Gigabyte 5750 Silent Cell on sale either).

    Well their marketing is false, and so is your assertion the Gigabyte 5750 Silent Cell is not on sale anywhere
    (in stock at $149.99 at 1:30EST June 24)

    Powercolor has really come up with an awesome product for passive video card nuts like me:
    A 5750 that is both passive and DOES NOT require a PCI-E power connector! They somehow shrunk the power envelope of ATI's chip. You pay extra for these features but I am happy to do so. One of the more innovative video cards I can ever remember seeing. This product is much more worthy of AT coverage IMHO.
  • IanCutress - Thursday, June 24, 2010 - link

    Hi Taft12,

    Many thanks for that link; searching earlier in the day didn't find it. It looks like also they're not directly selling it under the Silent Cell moniker (or newegg aren't), but under its code, GV-R575SL-1GI. I've updated the news post accordingly.

    Regarding the Go! Green, I'm wondering if they're stretching the power of the PCIe bus maybe a little too far; it may not overclock too well. They've used components usually seen on the high end cards, which may be more power efficient overall. That's also part of the premium you will pay. Ryan may have some thoughts...

    All the best,
  • Ryan Smith - Thursday, June 24, 2010 - link

    The 5750 is only an 86W TDP card in the first place, so it was an obvious candidate for a silent card that only relies on PCIe-slot power. I don't know what exactly PowerColor did for it, but it's probably a combination of removing the fan and binning their chips. Even if you're still a bit over, it's unlikely anyone would notice.
  • JGabriel - Saturday, June 26, 2010 - link

    Hi Ian,

    TechPowerUp did some testing on the Powercolor Go! Green 5750, and, while not a great overclocker, it's better than you'd expect, according to them anyway:


    I second Taft12's recommendation for AT to give it a review. It looks pretty interesting, and it would be worthwhile to see how it holds up under an AT review and benchmarking.

  • RoadToNever - Friday, June 25, 2010 - link

    AVIVO and PureVideo are nice solutions but I've seen reviews where deinterlacing quality suffered on low end cards despite full hardware acelleration certification . Also cutting edge resizing (MadVR)requires a lot of GPU shader power.
    I wish Anand could help us find the best card for video that's passive and has low power requirements.
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