AMD's Radeon HD 5870: Bringing About the Next Generation Of GPUs
by Ryan Smith on September 23, 2009 9:00 AM EST- Posted in
- GPUs
Power, Temperature, & Noise
As we have mentioned previously, one of AMD’s big design goals for the 5800 series was to get the idle power load significantly lower than that of the 4800 series. Officially the 4870 does 90W, the 4890 60W, and the 5870 should do 27W.
On our test bench, the idle power load of the system comes in at 141W, a good 42W lower than either the 4870 or 4890. The difference is even more pronounced when compared to the multi-GPU cards that the 5870 competes with performance wise, with the gap opening up to as much as 63W when compared to the 4870X2. In fact the only cards that the 5870 can’t beat are some of the slowest cards we have: the GTS 250 and the Radeon HD 3870.
As for the 5870 CF, we see AMD’s CF-specific power savings in play here. They told us they can get the second card down to 20W, and on our rig the power consumption of adding a second card is 23.5W, which after taking power inefficiencies into account is right on the dot.
Moving on to load power, we are using the latest version of the OCCT stress testing tool, as we have found that it creates the largest load out of any of the games and programs we have. As we stated in our look at Cypress’ power capabilities, OCCT is being actively throttled by AMD’s drivers on the 4000 and 3000 series hardware. So while this is the largest load we can generate on those cards, it’s not quite the largest load they could ever experience. For the 5000 series, any throttling would be done by the GPU’s own sensors, and only if the VRMs start to overload.
In spite of AMD’s throttling of the 4000 series, right off the bat we have two failures. Our 4870X2 and 4890 both crash the moment OCCT starts. If you ever wanted proof as to why AMD needed to move to hardware based overcurrent protection, you will get no better example of that than here.
For the cards that don’t fail the test, the 5870 ends up being the most power-hungry single-GPU card, at 401W total system power. This puts it slightly ahead of the GTX 285, and well, well behind any of the dual-GPU cards or configurations we are testing. Meanwhile the 5870 CF takes the cake, beating every other configuration for a load power of 664W. If we haven’t mentioned this already we will now: if you want to run multiple 5870s, you’re going to need a good power supply.
Ultimately with the throttling of OCCT it’s difficult to make accurate predictions about all possible cases. But from our tests with it, it looks like it’s fair to say that the 5870 has the capability to be a slightly bigger power hog than any previous single-GPU card.
In light of our results with OCCT, we have also taken load power results for our suite of cards when running World of Warcraft. As it’s not a stress-tester it should produce results more in line with what power consumption will look like with a regular game.
Right off the bat, system power consumption is significantly lower. The biggest power hogs are the are the GTX 285 and GTX 285 SLI for single and dual-GPU configurations respectively. The bulk of the lineup is the same in terms of what cards consume more power, but the 5870 has moved down the ladder, coming in behind the GTX 275 and ahead of the 4870.
Next up we have card temperatures, measured using the on-board sensors of the card. With a good cooler, lower idle power consumption should lead to lower idle temperatures.
The floor for a good cooler looks to be about 40C, with the GTS 250, 3870, and 4850 all turning in temperatures around here. For the 5870, it comes in at 46C, which is enough to beat the 4870 and the NVIDIA GTX lineup.
Unlike power consumption, load temperatures are all over the place. All of the AMD cards approach 90C, while NVIDIA’s cards are between 92C for an old 8800GT, and a relatively chilly 75C for the GTX 260. As far as the 5870 is concerned, this is solid proof that the half-slot exhaust vent isn’t going to cause any issues with cooling.
Finally we have fan noise, as measured 6” from the card. The noise floor for our setup is 40.4 dB.
All of the cards, save the GTX 295, generate practically the same amount of noise when idling. Given the lower energy consumption of the 5870 when idling, we had been expecting it to end up a bit quieter, but this was not to be.
At load, the picture changes entirely. The more powerful the card the louder it tends to get, and the 5870 is no exception. At 64 dB it’s louder than everything other than the GTX 295 and a pair of 5870s. Hopefully this is something that the card manufacturers can improve on later on with custom coolers, as while 64 dB at 6" is not egregious it’s still an unwelcome increase in fan noise.
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Ryan Smith - Wednesday, September 23, 2009 - link
We do have Cyberlink's software, but as it uses different code paths, the results are near-useless for a hardware review. Any differences could be the result of hardware differences, or it could be that one of the code paths is better optimized. We would never be able to tell.Our focus will always be on benchmarking the same software on all hardware products. This is why we bent over backwards to get something that can use DirectCompute, as it's a standard API that removes code paths/optimizations from the equation (in this case we didn't do much better since it was a NVIDIA tech demo, but it's still an improvement).
DukeN - Wednesday, September 23, 2009 - link
I have one of these and I know it outperforms the GTX 280 but not sure what it'd be like against one of these puppies.dagamer34 - Wednesday, September 23, 2009 - link
I need my bitstream Dolby Digital TrueHD/DTS HD Master Audio bistreaming codecs!!! :)ew915 - Wednesday, September 23, 2009 - link
I don't see this beating the GT300 as for so it should beat the GTX295 by a great margin.tamalero - Wednesday, September 23, 2009 - link
dood, you forgot the 295 is a DUAL CHIP?SiliconDoc - Wednesday, September 23, 2009 - link
roflmao - Gee no more screaming the 4850x2 and the 4870x2 are best without pointing out the two gpu's needed to get there.--
Nonetheless, this 5870 is EPIC FAIL, no matter what - as we see the disappointing numbers - we all see them, and it's not good.
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Problem is, Nvidia has the MIMD multiple instructions breakthrough technology never used before that according to reports is an AWESOME advantage, lus they are moving to DDR5 with a 512 bit bus !
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So what is in the works is an absolute WHOMPING coming down on ati that BIG GREEN NVIDIA is going to deliver, and the poor numbers here from what was hoped for and hyped over (although even PREDICTED by the red fan Derek himself in one portion of one sorrowful and despressed sentence on this site) are just one step closer to that nail in the coffin...
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Yes I sure hope ati has something major up it's sleeve, like 512 bit mem bus increased card coming, the 5870Xmem ...
I find the speculation that ATI "mispredicted" the bandwidth needs to be utter non-sense. They are 2-3 billion in the hole from the last few years with "all these great cards" they still lose $ on every single sale, so they either cannot go higher bit width, or they don't want to, or they are hiding it for the next "strike at NVidia" release.
erple2 - Friday, September 25, 2009 - link
So you're comparing this product with a not yet release product and saying that the not yet released product is going to trounce it, without any facts to back it up? Do you have the hardware? If not, then you're simply ranting.Will the GT300 beat out the 5870? I dunno, probably. If it didn't, that would imply that the move from GT200 to GT300 was a major disappointment for NVidia.
I think that EPIC FAIL is completely ludicrous. I can see "epic fail" applied to the Geforce FX series when it came out. I can also see "epic fail" for the Radeon MAXX back in the day. But I don't see the 5870 as "epic fail". If you look at the card relative to the 4870 (the card it replaces), it's quite good - solid 30% increase. That's what I would expect from a generation improvement (that's what the gt200's did over the 9800's, and what the 8800 did over the 7900, etc).
BTW, I'm seeing the 5870 as pretty good - it beats out all single card NVidia by a reasonable and measureable amount. Sounds like ATI has done well. Or are you considering anything less than 2x the performance of the NVidia cards "epic fail"? In that case, you may be disappointed with the GT300, as well. In fact, I'll say that the GT300 is a total fail right now. I mean jeez! It scores ZERO FPS in every benchmark! That's super-epic fail. And I have the numbers to back that statement up.
Since you are making claims about the epic fail nature of the 5870 based on yet to be released hardware, I can certainly play the same game, and epic fail anything you say based on those speculative musings.
SiliconDoc - Monday, September 28, 2009 - link
Well the GT200 was 60.96% increase average. AT says so.http://www.anandtech.com/video/showdoc.aspx?i=3334...">http://www.anandtech.com/video/showdoc.aspx?i=3334...
So, I guess ati lost this round terribly, as NVidia's last just beat them by more than double your 30%.
Great, EPIC FAIL is correct, I was right, and well...
Finally - Wednesday, September 23, 2009 - link
Team Green foames out of their mouthes. It's funny to watch.SiliconDoc - Wednesday, September 23, 2009 - link
Glad you are having fun.Just let me know when you disagree, and why. I'm certain your fun will be "gone then", since reality will finally take hold, and instead of you seeing foam, I'll be seeing drool.