NVIDIA's GeForce GTX 550 Ti: Coming Up Short At $150
by Ryan Smith on March 15, 2011 9:00 AM ESTPower, Temperature, & Noise
Last but not least as always is our look at the power consumption, temperatures, and acoustics of the GTX 550 Ti. As a result NVIDIA’s tinkering with both power efficiency and clocks, performance has gone way up but power has also gone up too: the official TDP has gone up by 10W.
Please note that as we don’t have a true reference card our testing methodology has been slightly tweaked. We’ve tested the AMP at both GTX 550 Ti reference clocks and at its factory overclock for all metrics, however noise and temperature in particular are going to significantly vary from manufacturer to manufacturer.
| GeForce GTS 450 & GTX 550 Voltage | ||||
| GTS 450 | Zotac GTX 550 Ti Amp | Idle | ||
| 1.05v | 1.1525v | 0.95v | ||
The load voltage on our Zotac AMP is 1.1525v, which compared to GF106/GTS 450 ends up being quite high. No doubt Zotac has given the card some more voltage to handle the factory overclock, however this will also skew our power results for load. Idle however remains unchanged at 0.95v.
Right off the bat, idle power consumption looks good. At 155W the Zotac GTX 550 AMP beats even the reference GTS 450 by 2W, and the gap with the Radeons is much larger. Here we’re looking at a 6W advantage over the 6850, and 8W over the 5770. This is no small feat given how hard it is to reduce idle power usage, and showcases the benefits of NVIDIA’s transistor tinkering.
Power consumption leaves much to be desired however, and it’s at this point that we can’t easily separate the GTX 550 Ti from the Zotac GTX 550 AMP. If the Zotac card did not have an overclock, perhaps it would have a lower load voltage, and as such lower power draw under load. But in this case it does not, which leads to a total system power draw difference of 19W over the 6850, never mind the 5770.
The GTX 550 Ti does not have any kind of overcurrent protection like the rest of the GTX 500 series, so here we can get straight numbers without forcibly disabling it. The results, like with Crysis, are understandably poor for the card; 33W over the 6850, more for the card when it’s running at factory clocks. If a more reference style GTX 550 Ti is anything like this, it bodes poorly for the card compared to the already faster 6850.
The king of our idle temperature charts is composed of NVIDIA reference cards, and while the Zotac GTX 550 AMP gives a decent performance, it can’t keep up. 35C at idle is still quite good, but we saw better on the GTS 450, and would likely see something similar on a reference GTX 550 Ti.
Under load, temperatures end up being middle the road, thanks once more to the card’s higher power consumption. Funny enough it does beat the 5770 by 1C even after all of this, but one could just as well slap the GTX 460 cooler on here and get results that would undoubtedly be below 70C.
FurMark of course adds several C more to our temperatures. In fact for a lower power card like the Zotac GTX 550 AMP we’re actually caught a bit off-guard. 86C at factory clocks means there’s some thermal headroom to play with for overclocking, but not too much – the GTX 550 Ti’s max temperature is only 95C.
For cards in this performance category, idle noise is pretty consistent thanks to the common use of open coolers. The Zotac GTX 550 AMP doesn’t disappoint here, offering a practically silent 41.5dbA as measured by our meter.
If you were hoping that higher temperatures would be a precursor to lower fan noise, you’re going to come up empty handed here. 50.7 is by no means loud among all the cards we’ve tested, but we’ve seen better. In fact the 5770/6850 both do better, as does the GTX 460 and GTX 560. At the AMP’s full factory overclock we get up to 54.4dbA, which is certainly going to be noticeable. Unfortunately the card doesn’t have the performance even with the overclock to justify the noise.
Ultimately this is less a discussion of the GTX 550 Ti reference design, and more a discussion on the Zotac GTX 550 Ti AMP’s design, which more likely than not takes a hit in cooling and temperatures thanks to the 2nd DVI port partially blocking the card’s external exhaust. But for the time being, it’s what we have to work with.
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HangFire - Tuesday, March 15, 2011 - link
For a while, AT listened and included the 8800GT with most tests. This was a great baseline as most people understood where their card fell in, compared to the 8800GT.AT has since decided (again) that all of us play nothing but the latest Dx11 games in Dx11 mode with all the goodies turned on, and the only folks upgrading already own Dx11 cards anyway.
mapesdhs - Tuesday, March 15, 2011 - link
Very true!
I've been collating performance results to compare older cards to newer
models as and when I can. Google: "Ian PC Benchmarks", it's the first link
that comes back (Blinkenlights site), then select, "PC Benchmarks, Advice
and Information". Note though that Blinkenlights is a mirror, my main site at
sgidepot is always updated first and more often.
I've included lots of 8800GT, 4890 and GTX 460 1GB data so far and I've
just obtained a 9800GT, 3850 AGP (should be a giggle!) and intend to obtain
various other older cards, including a GTX 275/285. I also have an X1950
Pro AGP (don't giggle, I got better results than reviews of the PCIe version).
Platform wise, I'm trying to put together a socket 775 build and also an
AM2/AM3 setup (I've already obtained a Core2Duo 6850 and Q6600
Core2Quad, though no mbd yet). And I'm adding further P55 examples, eg.
I've obtained an i5 670 and will be including an i5 760 aswell. All this done
on a stupid small budget btw (eBay madness), so if anyone has S775 or
AM2 parts they don't want, feel free to contact me. eBay is not exactly
bargain central anymore. :\ If you're after the highest price though, eBay
is best. Or of course free donations are welcome! 8) (I'll cover the postage;
I'm in the UK) I want to create a spread of data that will be genuinely useful
to people.
I don't have Crysis or Metro33 to test with, but I've used a good range of
freely available tests (recommendations welcome; I'm not going to use AVP
though - I had a look, thought it was rather poor). When I have the time I'll
also add real game tests using my own tests, focusing more on older titles
as that's a common issue people have (I'll be testing with Oblivion, the
1st Stalker game, CoD WAW and a few others).
I'm also including pro apps as & when I can since I do have a number of
borrowed Quadro FX cards to test aswell (580, 1500, 1700, 4500, 5500,
5600, etc.) which will all be for sale once the tests are done. So far I've
done some tests on the 1500 and 5500, but until I sort out a proper certified
X58 setup (for SLI) the results won't be fully fleshed out (Dell T7500
barebones on its way, need parts). Interesting to compare gamer & pro cards.
Note that I'm not massively familiar with older gfx cards, so suggestions are
welcome as to what I should include and/or look for. Feel free to email with
ideas (contact page is on my site, just email my Yahoo acccount). Don't post
here though as that'll only clog up the thread.
Lastly, I'm also putting together a standard X58 setup in a little while, but
first I want to sort out the older systems.
Oh, for those commenting about DX11 on older cards, that's absolutely
true, which is why whenever possible I run each test in all three modes,
ie. DX9, DX10 and DX11.
Ian.
PS. If there happens to be anybody in the Edinburgh area who has a card
they'd be willing to lend me so I can add results for it, please let me know.
You can visit and see for yourself. I'm in the Corstorphine/Clermiston area.
medi01 - Tuesday, March 15, 2011 - link
At least this time it doesn't make you color blind, and bar colors make sense (on most charts) unlike in AMD notebook review.Samus - Tuesday, March 15, 2011 - link
...but so does the GTX460. The 550 comes close to the 'stock' 460 when it is radically overclocked, just as the 460 can beat $200+ cards when it is radically overclocked.I appriciate the overclocking 'potential' and coverage, but ever since the eVGA GTX460 FTW review, AT has been dilluting the true nature of these products with overclocked cards carrying heavier weight in the charts than they should.
Your older reviews (<2009) always had a overclock section, omiting the overclocked nature from the rest of the charts. I liked that.
I just don't like seeing overclocked cards reviewed. They are limited runs and YMMV; the eVGA 460 FTW was available for less than a month after you reviewed it, and has since been replaced twice with the Superclocked, and now the Superclocked Extreme Edition, all of which has had varying GPU/BUS/MEM clocks at prices in excess of $80 over the stock cards. That's BS.
mapesdhs - Tuesday, March 15, 2011 - link
Actually the FTW is still easily available, I bought another two last week for a PC I'm
building for a friend.
Ian.
Ryan Smith - Tuesday, March 15, 2011 - link
A lot has changed since 2009. The biggest of which is that NV and AMD have both given manufacturers more freedom in their designs, and simultaneously manufacturers have been looking to further differentiate their products beyond the cooler and price. Factory overclocks are how they're doing it - it allows them to build a card with a higher performance level for little extra cost, increasing their gross margin while filling small holes in the market.Truth be told it creates a bit of a hassle for us as this results in a different card/clock combo every $10, but clearly it's an effective strategy for the manufacturers. At the same time I get why it frustrates you guys, which is why we don't include these cards on our long run charts. But when it comes to reviewing custom cards it's going to be rare to see cards without a factory overclock - most enthusiast cards now have a factory overclock, and what the manufacturers are willing to sample.
On the plus side, as mapesdhs has already noted, manufacturers are getting better about availability. These cards will never have the kind of long term availability that reference clocked cards do (largely due to the fact that it's a single supplier versus many), but many of them are available through the primary market lifetime of the card (which is to say until it's replaced by a newer GPU).
mapesdhs - Tuesday, March 15, 2011 - link
Has to be said though, I didn't expect the FTW to still be that easily available,
but it is.
However, the earlier poster is also correct that there are slightly lower clocked
alternatives from EVGA that cost less, in one case the core/shader clocks are
the same, just a bit slower RAM (the SSC version). Shop around, and note that
sometimes minor differences in prices can be negated by varying shipping costs
between suppliers. I know one company that keeps offering 'special' deals, but
their shipping costs are so high that they're usually more expensive overall than
alternative sources.
I bought the FTWs because that's what my friend wanted, basically a replica
of the system I built for myself.
Ian.
DrPop - Tuesday, March 15, 2011 - link
I love this site and all the reviews are generally very good.However, I am at a loss as to why this and all other GPU reviewers still use aged compute benchmarks such as folding @ home, etc.
Could you PLEASE start running some BOINC tests with QUALITY, optimized, MODERN code for the latest GPUs, so that the world can see the real "number crunching power" each GPU possesses?
Examples of this would be DNETC on BOINC (highly optimized), or Collatz, etc.
I am quite sure you will be surprised at how the computing bar graph will look - it will be very different than the graphs that come out of your current, aged compute code suite.
Thank you!
Ryan Smith - Tuesday, March 15, 2011 - link
It's true Dnetc is highly optimized (and I use it as a torture test because of that) but it's actually kind of a poor benchmark. It's purely compute bound to the point where cache, memory, etc have no impact. For our compute tests we want benchmarks that stress all aspects of the GPU, so that means it not only needs to be compute intensive, but memory intensive, cache sensitive, etc. Otherwise it's just a proxy for GFLOPs and a best case scenario for the VLIW5 architecture.With that said, I am completely open to suggestions. If you know of other programs that offer a decent benchmark and work on AMD and NVIDIA GPUs, I'd like to hear about it. We'll be refreshing the suite in the next couple of months, so now is the time to make suggestions.
HangFire - Tuesday, March 15, 2011 - link
At least the new 550 is marginally faster and lower power idle than the 450. Someone buying-up from one to the other will get a small boost, and even if power demands are slightly higher, the difference is so small that they shouldn't have to buy a new power supply. If they complain they didn't get a big boost, well, buy something with a larger second digit.After all the naming shenanigans Nvidia has played in the past, they should be commended for (at least) getting the name of the card right.
Memory bandwidth is a very important buying comparison for me. I only buy middle end cards with higher than 50GB/s bandwidth, and high end with more than 100GB/s. This is a form of future proofing. I know I can always turn down detail and still get the frame rates (unless it is a very poorly written game). I would settle for 98GB/s. I would not settle for 32GB/s, or some and some.
Oh, yeah, still no comment from AT on intro-time Linux driver support. Why not at least ask, why give Nvidia shelter on this point?