OC: 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.

Power, Temperature, & Noise OC: Gaming Performance
Comments Locked


View All Comments

  • CeriseCogburn - Thursday, August 23, 2012 - link

    I really didn't read your rant just skimmed your crybaby whine.
    So who cares you had an emotional blowout. Take some midol.
  • Galidou - Thursday, August 23, 2012 - link

    Attacking and attacking again, you have so much respect it's almost admirable. Respect is the most important thing in the world, if you can't have some for even people you don't know, I'm sorry but you're missing on something here.
  • Galidou - Thursday, August 23, 2012 - link

    I love it when people state their disrespectful opinion as a fact. Really drives their point home, yep.
  • CeriseCogburn - Thursday, August 23, 2012 - link

    Take a look at your 7950 SKYRIM LOSS in triple monitor to the 660Ti and the 660Ti also beats the 7950 boost and the 7970 !

    5760x1080 4x aa 16x af


    YES, YOU DID YOUR "RESEARCH"... now you've lost every stupid argument you started. Stupid.
  • Galidou - Tuesday, September 4, 2012 - link





    Every review shows the 660ti under EVEN the 7870 and your review shows the 660 ti performing to the level of a 7970, flawed bullscrap. Your website has a problem, the same you have, it has a choosen side aka Fanboyism.

    I have both right now my wife uses the 660 ti in her pc for Guild wars 2 at 1080p and I bought the 7950 and overclocked both in my pc to test and the 7950 hands down tramples over the gtx 660 ti even both fully overclocked. I tested with skyrim on 3 monitor 5760*1080 and that's the only game I play.

    Now don't get MAD, I never said the gtx 660 ti is a bad card, it works wonders. But it gets trampled at 5760*1080 in skyrim end of the line...
  • TheJian - Monday, August 20, 2012 - link

    Actually I think they need to raise the clocks, and charge more, accepting the fact they will run hotter and use more watts. At least they can get more for the product, rather than having people saying you can OC them to 1100. Clock the normals at 900/1000 and the 7970@1050/1100 or so. Then charge more. Of course Nv is putting pricing pressure on them at the same time, but this move would allow them to be worth more out of the box so it wouldn't be as unreasonable. AT out of the box right now you can't charge more because they perform so poorly against what is being sold (and benchmarked) in the stores.

    With NV/Intel chewing them from both ends AMD isn't making money. But I think that's their fault with the mhz/pricing they're doing to themselves. They haven't ripped us off since the Athlon won for 3 years straight. Even then, they weren't getting real rich. Just making the profits they should have deserved. Check their 10yr profit summary and you'll see, they have lost 6bil. So I'd have to say they are NOT pricing/clocking their chips correctly, at least for this generation. These guys need to start making more money or they're going to be in bankruptcy by 2014 xmas.
    Last 12 months= sales 6.38bil = PROFITS= - 629 million! They aren't gouging us...They are losing their collective A$$es :(
    That's a LOSS of 629 million. Go back 10yrs its about a 6.x billion loss.

    While I hate the way Ryan did his review, AMD needs all the help they can get I guess... :) But Ryan needs to redo his recommendation (or lack of one) because he just looks like a buffoon when no monitors sell at 2560x1600 (30inchers? only 11, and less than this res), and steampowered.com shows less than 2% use this res also. He looks foolish at best not recommending based on 1920x1200 results which 98% of us use. He also needs to admit that Warhead is from 2008, and should have used Crysis 2 which is using an engine based on 27 games instead of CryEngine 2 from 2007 and only 7 games based on it. It's useless.
  • Galidou - Tuesday, August 21, 2012 - link

    ''profits they should have deserved''

    You speak like if they had to overcome Intel and Nvidia's performance is easy and it's all their fault because they work bad. AMD got a wonderful team, you speak like you ever worked there and they don't do shit, they sit on their chair and that's the result of their work.

    Well it isn't, if you wanan speak like that about AMD, do it if you work there. No one is better placed to say if a company is really good or bad than the employees themselves. So just stop speaking like if designing these over 3 billions transistor things is as easy as saying ''hello, my name is Nvidia fanboy and AMD is crap''.
  • CeriseCogburn - Thursday, August 23, 2012 - link

    AMD is crap. It's crap man, no getting around it.
  • Galidou - Thursday, August 23, 2012 - link

    Too late Cerise, you lost all credibility by not being able to have an objective(it means it is undistorted by emotions) opinion and you rather proved you're way too much emotive to speak about video cards manufacturer.

    You too speak like if you ever worked at AMD and sure it is not the case, just visiting their headquarters would make your eyes bleed because in your world, this place is related to hell, with an ambient temperature averaging 200 degrees celsius, surrounded by walls of flesh, where torture is a common thing. And in the end, the demons poop video cards and force you to buy or kill your family.
  • CeriseCogburn - Thursday, August 23, 2012 - link

    Your opinion - " i'm did my research ima getting my 7950 for my triple monitor SKYRIM..."

    Take a look at your 7950 SKYRIM LOSS in triple monitor to the 660Ti and the 660Ti also beats the 7950 boost and the 7970 !

    5760x1080 4x aa 16x af



    There isn't a palm big enough in the world to cover your face.

Log in

Don't have an account? Sign up now