Overclocking
First things first: the performance gains you get when you spend an extra $100 on an overclocked card are quite limited, which is due to the relatively small clock speed boost of 850 to 900 MHz that equals only 6%. In our gaming benchmarks this translated into an even smaller 1.5% gain (hardly worth a 25% increase in cost).
On the reference card, we reached the same 900 MHz, but we also accelerated the video memory from 1,200 to 1,300 MHz, which results in a more significant performance benefit of 4.5%. Last but not least, we also overclocked MSI’s R5870 Lightning to 925 MHz on the GPU and 1,315 MHz on the GDDR5 video memory, which resulted in a performance advantage of 5.4% when compared to reference clock speeds. That's an extra .9% gain overall.
As you can imagine, the MSI R5870 Lightning doesn’t hit physical limits at these speeds. You can use the Afterburner tool to tweak voltages in an effort to reach higher overclocking speeds. Once you enable voltage control in the settings window, you will be able to modify an additional slider in Afterburner. The default GPU voltage setting for MSI’s R5870 Lightning card is 1.129 V. We decided to finalize this article without voltage increases, because the potential performance increase is disproportional to the strain the card has to endure. We needed more than 1.2 V to make sure 950 MHz would work reliably, and this came at the cost of 73°C GPU temperature. All you would be getting is a mere 1% performance boost, which is not quite exciting. The memory could hardly be overclocked any further than 1,315 MHz. The TwinFrozr II fan will also be running at increased speeds, generating more noise. Our recommendation is to use the voltage control for ensuring stability at slight overclocks instead of going for maximum clock speeds.
The performance diagram shows the frame rates during the 13 minutes benchmark duration. The black area shows the performance of the reference card. The green peaks represent the additional performance of the overclocked retail card. You can see that there is additional performance at low as well as at high frame rates. We used a 1920x1200 resolution with 8x anti aliasing.
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i will buy a normal card with good cooling and overclock it.
Too less performance gain (4-5 FPS) for the too much extra price paid ($50-$70) along with too much increase in power consumption (30-40 W. Better to buy a reference card unless you want the best no matter what the price is.
I like the idea behind the article and I'm glad that there's been some testing done on it, but I don't really like the article itself.
There are references to how much the reference card is overclocked by, but there is no clear section about it, you started off with some of the summary charts, instead of putting them after the initial tests and you kept switching what cards you were comparing, with less warning than I would like..
Plus there's that 2GB 5850. Is that really a 2GB 5850, or is it actually 2GB 5830, because it kept getting beaten by the 1GB 5850..
When I buy a new GPU, I look for one who's reference clocks make it "good enough" as-is; but I do look for a better / quieter cooler.
great article but u should have compared the reference against the sapphire vapor-x
I'm guessing they meant "In order to SET their products apart..."
Seriously, it's the first sentence in the article. Does no one proof read anything here? Isn't that like the first thing you learn when you want to become a writer? Sorry, rant over.
"This cooling concept works pretty well, as it not only provides effective graphics component cooling, but it also helps to remove warm air from the inside of your PC. "
The reference 5870 has a vent on its side so, it doesn't completely remove the hot air from the case but recirculates a part of the hot air back into the case
It's a 5850, look how close the framerates are.
The amount of ram doesn't really matter at these resolutions.
The cards just do not offer enough gain. If you can afford the overclock edition at a premium, then save up a little more and get the next card up or buy two of the next lower cards. The $1000+ dual 5870 from Asus shows what a complete waste of money some, not all, super OC cards are.
Try this, put together a really really really premium card component wise, and then don't put any cooling on it. Let me decide what I am going to do for cooling and companies can save on packaging, shipping etc due to no cooler.
If your really aiming at the OC crowd and not just playing a game of marketing, then you know the first thing someone does is to rip off your factory cooler to replace it or at the very least put quality thermal compound on it.
I like this article, thanks tom.
When I buy a new GPU, I look for one who's reference clocks make it "good enough" as-is; but I do look for a better / quieter cooler.
Best suggestion, wait for the manufacture to slap on some after market cooling and pay the extra for something useful. It wasn't like this in the past, but now-a-days they like putting on HSF setups that do a relatively poor job.
You may not have noticed silicondoc, but this past year, NVIDIA really hasn't been bringing its A-game to the table, mostly trying to use marketing to make up for its failures...right now, Red really is performing better in a price/performance setting. There's really little that any honest individual can do to deny that, fan or Red OR Green...it's not Tom's Hardware that's falling down, it's NVIDIA at the moment. Maybe the next gen will be better, but no one knows yet.
There's really little that any honest individual can do to deny that, fan or Red OR Green...
Edit: ...fan of Red OR Green...
I have started buying cards from vendors that warranty overclock like EGVA. I paid 159$ for a GTX 260 216 core after rebate well over a year ago, then when I am gaming I use the EVGA precision tool to overclock it to the higher priced cards core / shader speed.
Its funny because mine will do the exact speed as the factory "superclocked" card's settings at the press of a button - all under lifetime warranty.
My card before this one was a Radeon, I'm a total unloyal customer. I'm sure they have some similar deals, but EVGA has definetely earned my business when it comes to Nvidia stuff...
I definitely would have liked to see the 460 on here. So far the reviews have been very good.
Wow, you nVidia uberfans really get your panties in a bunch over nothing! The premise of this article was valid: Comparing factory over clocked cards against standard cards. Yes, they chose to compare a mature product in the 5870 rather than a brand new to market nVidia, but the premise was still valid.
Yes, some of us DO prefer ATI cards over nVidia. So what? For the last two years nVidia has done little more than offer up old cards with new model numbers on them trying to convince us that they were still a competitor, while ATI pushed the envelope in performance, price, and power efficiency. Even now, when nVidia has finally gotten their new chipset out the door and is finally offering a competitive performing card they are still too expensive for what you get and use enough juice to heat a small home.
If nVidia spins your wheels, then that is fine with me. Personally, I have had more than enough of their crappy drivers and overheating cards to last me a life time.
What kind of moron puts a 5870 in a 32 bit machine? That test pc setup is complete garbage.
What kind of moron puts a 5870 in a 32 bit machine? That test pc setup is complete garbage.
more to the point, who the hell in their right mind buys/uses a 32-bit OS anyways?
What kind of moron puts a 5870 in a 32 bit machine? That test pc setup is complete garbage.
What kind of person thinks it would make a difference?