The GeForce GTX 660 Ti Review, Feat. EVGA, Zotac, and Gigabyte
by Ryan Smith on August 16, 2012 9:00 AM ESTOC: Power, Temperature, & Noise
Our final task is our look at the overclocking capabilities of our GTX 660 Ti cards. Based on what we’ve seen thus far with GTX 660 Ti, these factory overclocked parts are undoubtedly eating into overclocking headroom, so we’ll have to see just what we can get out of them. The very similar GTX 670 topped out at around 1260MHz for the max boost clock, and between 6.6GHz and 6.9GHz for the memory clock.
| GeForce 660 Ti Overclocking | |||||
| EVGA GTX 660 Ti SC | Zotac GTX 660 Ti AMP | Gigabyte GTX 660 Ti OC | |||
| Shipping Core Clock | 980MHz | 1033MHz | 1033MHz | ||
| Shipping Max Boost Clock | 1150MHz | 1175MHz | 1228MHz | ||
| Shipping Memory Clock | 6GHz | 6.6GHz | 6GHz | ||
| Shipping Max Boost Voltage | 1.175v | 1.175v | 1.175v | ||
| Overclock Core Clock | 1030MHz | 1033MHz | 1083MHz | ||
| Overclock Max Boost Clock | 1200MHz | 1175MHz | 1278MHz | ||
| Overclock Memory Clock | 6.5GHz | 6.8GHz | 6.6GHz | ||
| Overclock Max Boost Voltage | 1.175v | 1.175v | 1.175v | ||
As we suspected, starting with factory overclocked cards isn’t helping here. Our Zotac card wouldn’t accept any kind of meaningful GPU core overclock, so it shipped practically as fast as it could go. We were able to squeeze out another 200MHz on the memory clock though.
Meanwhile our EVGA and Gigabyte cards fared slightly better. We could push another 50MHz out of their GPU clocks, bringing us to a max boost clock of 1200MHz on the EVGA card and 1278MHz on the Gigabyte card. Memory overclocking was similarly consistent; we were able to hit 6.5GHz on the EVGA card and 6.6GHz on the Gigabyte card.
Altogether these are sub-5% GPU overclocks, and at best 10% memory overclocks, which all things considered are fairly low overclocks. The good news is that reference-clocked cards should fare better since their headroom has not already been consumed by factory overclocking, but binning also means the best cards are going to be going out as factory overclocked models.
Moving on to our performance charts, we’re going to once again start with power, temperature, and noise, before moving on to gaming performance.
Unsurprisingly, given the small power target difference between the GTX 670 and the GTX 660 Ti, any kind of overclocking that involves raising the power target quickly pushes power consumption past the GTX 670’s power consumption. How much depends on the test and the card, with the higher power target Gigabyte card starting with a particular disadvantage here as its power consumption ends up rivaling that of the GTX 680.
We also see the usual increase in load temperatures due to the increased power consumption. The Zotac and Gigabyte cards fare well enough due to their open air coolers, but the blower-type EVGA card is about as high as we want to go at 80C under OCCT.
Last but not least, looking at noise levels we can see an increase similar to the temperature increases we just saw. For the Zotac and EVGA cards noise levels are roughly equal with the reference GTX 680, which will be important to remember for when we’re looking at performance. Meanwhile the Gigabyte card continues to shine in these tests thanks to its oversized cooler; even OCCT can only push it to 46.8dB.
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CeriseCogburn - Thursday, August 23, 2012 - link
http://www.bit-tech.net/hardware/2012/08/16/nvidia...ROFLMAO - the ONLY REASON you say you wanted the 7950 and it LOSES.
There's the level of "your cred", you freaking loser.
Galidou - Saturday, August 18, 2012 - link
This is only the point of the iceberg when we speak about credibility. Anandtech was nice enough to have a stock clocked part, we can't say that for most of the reviews on the internet.I even got on a website ''not gonna say it, could be too much shame for them'' that was comparing a non reference 660ti overclocked with... suspense... a 7850. And then some times in the review offered an ''alternative analysis'' against a 6870, who's dirty now?
I won't name any but of all the review sites I usually read, they were all testing overclocked cards (plus the included Nvidia boost) against stock clocked AMD cards, ALL of them... Only one included minimum frame rates to all of the games tested which was interesting to see the limiting bandwidth acting at certain points. One can only wonder if the games released won't have any problem with that.
I first came here on anand and almost pulled the trigger buying one RIGHT after finishing reading. Then I visited my other sites and it got all messed up. Anand didn't have minimum frames everywhere, others had different results, the games I play switch from one brand to another for the ''best bang for my bucks''.
With all that mixed up mess, one can only wonder where the ''real'' truth is. I'll probably just end up buying a 7950 overclocking it 40-50% higher and not wonder about future games. At least I waited long enough to see the 660ti. Anyway the other reviewers had quite good result with the 7950 and it was STOCK omg 40-50% overclock can't give a bad performance...
CeriseCogburn - Sunday, August 19, 2012 - link
*OC 660ti's on newegg and only 3 Stock.The author pointed out there is no default version, and Partners have a somewhat free reign on released clocks.
Now be a good person and go look for yourself, you'll have a hard time finding a stock card vs an OC oob card.
I'd also like to see that 40-50% 7950 OC....(methinks you really spewed overboard there)
Reviews are noting a 17%-22% max performance gain on maximum 7950 OC, and that does not mean it's stable, except on a sole rider, non internet server, spanking clean, just defragged, built for benching, top of the line components, reviewer super massive rig.
So, can we get that 50% OC bench set from you ?
NO, of course we can't.
Galidou - Sunday, August 19, 2012 - link
My friend bought the Twin frozr 3 while it was on special on newegg(300$ a week ago). overclocked 1150/1700 stable that's a 44% overclock and he could go higher, with the stock cooler. We reported gains of around 30 to 36% performance gain in games.On newegg, there's plenty of people reporting 1150 to 1200 core overclock, because it is in fact a 7970 board at a very cheap price. If you really can't accept one good thing about AMD that's where I differ from you.
The thing is, Nvidia won this round for the average user, most of us don't overclock and are not fiddling with voltages and such. Including a nice boost is good for those average users, the fact is and whatever you might say, overclockers know it. AMD is very overclocker friendly this gen, end of the line, cry about it some more, it doesn't change the fact that they already know it, sorry. If you tried to misinform the people, you're too late, it's already circulating on the internet my friend.
Now you shall say and I've heard it: ''People have been able to get their gtx680 overclocked to 1300 core in some cases so they are..........''. I know the drill, 680 has for the most part, a boost clock of around 1100 - 1150 boost clock. Lemme translate that, 200mhz overclock on a 1100 boost clock, 18% overclock on the cherry picked 680, because I'm comparing it with a 7950 which didn't pass the 7970 requirement.
CeriseCogburn - Thursday, August 23, 2012 - link
Oh look at that, I didn't use a single fact again.you're pathetic.
CeriseCogburn - Thursday, August 23, 2012 - link
the 660Ti's are hitting 1300+ cores.you're losing at stock out of the box in your highest triple monitor rez dummy
http://www.bit-tech.net/hardware/2012/08/16/nvidia...
Keep attacking like the fool you are.
Now you may apologize profusely and thankme for saving you from your brainwashed amd embolism you claim to have acquired at overclock net
thebluephoenix - Monday, August 20, 2012 - link
Cerise, as a punishment i would make you read few nvidia related articles at site called Semi Accurate to see why is so wrong to be biased idiotic crazy fanboy.CeriseCogburn - Thursday, August 23, 2012 - link
Charlie is a liar, I am not. Deal with it.Galidou - Thursday, August 23, 2012 - link
Everyone is a liar but you Cerise, all hail to you ohh great hardware god, I'm still waiting for news of you on Overclock.net you almighty owner of all the knowledge.Come and teach the nitrogen overclockers of the world about your so great knowledge about video card.
CeriseCogburn - Thursday, August 23, 2012 - link
Yes, time for you to bow down, then thank me for having to correct you three times already, on the FACTS.