Temperature, Power, & Noise: Hot and Loud, but Not in the Good Way

For all of the gaming and compute performance data we have seen so far, we’ve only seen half of the story. With a 500mm2+ die and a TDP over 200W, there’s a second story to be told about the power, temperature, and noise characteristics of the GTX 400 series.

Idle GPU Temperature

Starting with idle temperatures, we can quickly see some distinct events among our cards. The top of the chart is occupied solely by AMD’s Radeon 5000 series, whose small die and low idle power usage let these cards idle at very cool temperatures. It’s not until half-way down the chart that we find our first GTX 400 card, with the 470 at 46C. Truth be told we were expecting something a bit better out of it given that its 33W idle is only a few watts over the 5870 and has a fairly large cooler to work with. Farther down the chart is the GTX 480, which is in the over-50 club at 51C idle. This is where NVIDIA has to pay the piper on their die size – even the amazingly low idle clockspeed of 50MHz/core 101MHz/shader 67.5Mhz/RAM isn't enough to drop it any further.

Load GPU Temperature - Crysis

Load GPU Temperature - Furmark

For our load temperatures, we have gone ahead and added Crysis to our temperature testing so that we can see both the worst-case temperatures of FurMark and a more normal gameplay temperature.

At this point the GTX 400 series is in a pretty exclusive club of hot cards – under Crysis the only other single-GPU card above 90C is the 3870, and the GTX 480 SLI is the hottest of any configuration we have tested. Even the dual-GPU cards don’t get quite this hot. In fact it’s quite interesting that unlike FurMark there’s quite a larger spread among card temperatures here, which only makes the GTX 400 series stand out more.

While we’re on the subject of temperatures, we should note that NVIDIA has changed the fan ramp-up behavior from the GTX 200 series. Rather than reacting immediately, the GTX 400 series fans have a ramp-up delay of a few seconds when responding to high temperatures, meaning you’ll actually see those cards get hotter than our sustained temperatures. This won’t have any significant impact on the card, but if you’re like us your eyes will pop out of your head at least once when you see a GTX 480 hitting 98C on FurMark.

Idle Power Consumption

Up next is power consumption. As we’ve already discussed, the GTX 480 and GTX 470 have an idle power consumption of 47W and 33W respectively, putting them out of the running for the least power hungry of the high-end cards. Furthermore the 1200W PSU we switched to for this review has driven up our idle power load a bit, which serves to suppress some of the differences in idle power draw between cards.

With that said the GTX 200 series either does decently or poorly, depending on your point of view. The GTX 480 is below our poorly-idling Radeon 4000 series cards, but well above the 5000 series. Meanwhile the GTX 470 is in the middle of the pack, sharing space with most of the GTX 200 series. The lone outlier here is the GTX 480 SLI. AMD’s power saving mode for Crossfire cards means that the GTX 480 SLI is all alone at a total power draw of 260W when idle.

Load Power Consumption - Crysis

Load Power Consumption - Furmark

For load power we have Crysis and FurMark, the results of which are quite interesting. Under Crysis not only is the GTX 480 SLI the most demanding card setup as we would expect, but the GTX 480 itself isn’t too far behind. As a single-GPU card it pulls in more power than either the GTX 295 or the Radeon 5970, both of which are dual-GPU cards. Farther up the chart is the GTX 470, which is the 2nd most power draining of our single-GPU cards.

Under FurMark our results change ever so slightly. The GTX 480 manages to get under the GTX 295, while the GTX 470 falls in the middle of the GTX 200 series pack. A special mention goes out to the GTX 480 SLI here, which at 851W under load is the greatest power draw we have ever seen for a pair of GPUs.

Idle Noise Levels

Idle noise doesn’t contain any particular surprises since virtually every card can reduce its fan speed to near-silent levels and still stay cool enough. The GTX 400 series is within a few dB of our noise floor here.

Load Noise Levels

Hot, power hungry things are often loud things, and there are no disappointments here. At 70dB the GTX 480 SLI is the loudest card configuration we have ever tested, while at 64.1dB the GTX 480 is the loudest single-GPU card, beating out even our unreasonably loud 4890. Meanwhile the GTX 470 is in the middle of the pack at 61.5dB, coming in amidst some of our louder single-GPU cards and our dual-GPU cards.

Finally, with this data in hand we went to NVIDIA to ask about the longevity of their cards at these temperatures, as seeing the GTX 480 hitting 94C sustained in a game left us worried. In response NVIDIA told us that they have done significant testing of the cards at high temperatures to validate their longevity, and their models predict a lifetime of years even at temperatures approaching 105C (the throttle point for GF100). Furthermore as they note they have shipped other cards that run roughly this hot such as the GTX 295, and those cards have held up just fine.

At this point we don’t have any reason to doubt NVIDIA’s word on this matter, but with that said this wouldn’t discourage us from taking the appropriate precautions. Heat does impact longevity to some degree – we would strongly consider getting a lifetime warranty for the GTX 480 to hedge our bets.

Wolfenstein Final Words
POST A COMMENT

197 Comments

View All Comments

  • Sunburn74 - Sunday, March 28, 2010 - link

    It is absolutely ridiculous. Like having a buzzsaw in your case.
    http://www.hardocp.com/article/2010/03/26/nvidia_f...">http://www.hardocp.com/article/2010/03/26/nvidia_f...
    Reply
  • Belard - Sunday, March 28, 2010 - link

    AMD already stated they are not reducing their pricing any time soon. This is because their line-up is far healthier than Nvidia.

    They know (and we should know) that the $500/$350 price for the new GeForce 4 cards are not going to stick. There is only some many thousands of cards available for the next 3~5 months. The supply will run dry in about 1-3 weeks I bet. We're going to see the pricing shoot up close to $600 for the GF480, the fanboyz will be willing to pay that price.

    The 5850 was supposed to be a $250 card, we see how well that worked out. While the price did settle around $300, the 5850 was still a better value than the $370~400 GeForce 285 card as it was far faster and run cooler, etc. The 5870 is typically faster than the $500 GeForce 295 - for $100 less. ATI has no reason to lower their pricing.

    The GeForce 265~295 cards are already being phased out, too slow, cost too much.

    So nVidia has nothing for the sub $300 market... nothing. Only the GF-250 has any value but a tad expensive as it should be $100 since its still a DX10 re-badged 9800GTX.

    So when ATI feels any pressure from Nvidia, they can easily drop their prices. It costs $5000 per wafer, no matter how many chip dies are on it. It may be costing nVidia $150~200 per chip while for AMD, they could be paying $20~35 per chip used in the 5800/5900s.
    Then you add the costs for memory, the PCB, parts, cooling system etc.

    It is very easy for AMD to drop $50 per GPU and they'd still make a profit while Nvidia sells their geForce 400 cards at a loss or no profit.

    When ATI sells the 5830 for $190~200, 5850 at $250 and 5870 at $325~350 would help sales and keep nVidia at bay.

    We'll see...
    Reply
  • SirKronan - Sunday, March 28, 2010 - link

    I would've liked to see 5850's in crossfire thrown into this mix. I know you don't have time to test them all, but I think that's the key competitor against the 480 when it comes to bang/buck. I would think the 5850's in crossfire could handily beat the 295 and the 480, all while consuming less power. I believe there may have been another site that did it, but with this excellent and very thorough review done here, it would've been even that little tiniest bit sweeter to have a 5850 crossfire line on their graphs.

    Regardless, thanks for the informative review!
    Reply
  • B3an - Saturday, March 27, 2010 - link

    This review and any other pages on this site are not working in Firefox... they have been reported as attack pages.

    "This web page at www.anandtech.com has been reported as an attack page and has been blocked based on your security preferences."

    This is why FF with all default settings, and just using adlock.
    Could it be trouble with the ads again using a malware/virus?
    Reply
  • Ryan Smith - Sunday, March 28, 2010 - link

    We know. It's being worked on. Reply
  • Sunburn74 - Saturday, March 27, 2010 - link

    The 5850 idles inthe mid 30's but it also does absolutely nothing to stay cool, operating at about 20% max fan speed. Under load it may go up to 30% fan speed, but rarely ever breaks the 40% mark.

    What are the approximate idle and load fan speeds for both the gtx 480 and 470? I guess I'm asking this to understand just how much extra cooling room is innately available. Are these card working at max capacity to keep cool or is there thermal/fan headroom there to be had?
    Reply
  • Ryan Smith - Saturday, March 27, 2010 - link

    I don't have that data on-hand (we don't record fan speeds), but it's something that I should be able to easily grab at a later time. Reply
  • Lemonjellow - Saturday, March 27, 2010 - link

    For some reason Chrome is flagging this article as a malicious sight... Oddness... Possibly got a bad advertisement... Reply
  • NJoy - Saturday, March 27, 2010 - link

    well, Charlie was semi-accurate, but quite right =))What a hot chick... I mean, literately hot. Way too hot Reply
  • WiNandLeGeNd - Saturday, March 27, 2010 - link

    Looking back at the data, I realized that power consumption is for system total. Guru3d measured the power consumption of the card itself and reported a max of 263W, so roughly 21 A. I think my 850W will do just fine since each PCI-X con has 20A each. Reply

Log in

Don't have an account? Sign up now