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
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  • TheJian - Sunday, August 19, 2012 - link

    For one there are 6 superclocked 660TI cards on newegg today available at $319 or less DEFAULT. They are fully warranted at those speeds:
    http://www.newegg.com/Product/Product.aspx?Item=N8...
    1032 core/1111mhz boost.
    http://www.newegg.com/Product/Product.aspx?Item=N8...
    1019/1097 for $299.
    Can you do that with a 7950?
    How hot and noisy is yours. I can see what AMP speeds do here at anandtech. How many watts will yours use doing what you said? Just look at the boost edition here and scores around the web at 1920x1200 and you realize it's getting whipped. GTX680?
    Lets just get who can go faster totally out of the way at ridiculous overclocks:
    http://www.hardocp.com/article/2012/07/30/msi_gefo...
    GTX680 MSI Lightning $580 review at hardocp vs. Sapphire 7970 OC $460 at 1280GPU/1860memory at 1.300v! all @2560x1600 min/avg 680 1st 7970 2nd
    Max Payne 3
    41/86.2 vs. 42/79.7

    battlefield 3
    29/52.8 vs 32/50.6

    Batman Arkham
    42/68 vs. 29/57

    Witcher 2 enhanced
    22/51.5 vs 21/50.3

    battlefield 3 multiplayer 1920x1200 (sorry multi isn't run at higher)
    59/78.7 vs. 50/64.2
    So based on avg framerate,
    Batman >19% faster for gtx
    Witcher2=Wash based on min/max either way
    battlefield multi >22% faster for gtx
    Battlefield3 singleplayer wash I guess based on min max
    Maxpayne 3 >8% faster
    Bottom line from hard OCP conclusion:
    "The video card also one of the fastest out-of-box operating speeds. It even went head to head with one of our fastest overclocked AMD Radeon HD 7970's and swept the floor with it."

    If you can find a better review of these two GPU's clocked faster let's see it. I mean any GTX 680 vs. any 7970, where both are ridiculously OC'd like these here. You mentioned 1.15 for 7970, well they got it to 1280! And it got the snot knocked out of it anyway. Sorry Russian. Note they got the mem to 7.44ghz (I'd say a bit lucky draw) vs. the GTX 680 mem hit a wall at 7.05ghz. I'm guessing there will be a few cards do quite a bit better in GTX 680 land here. IT's just a luck of the draw either way, but the sapphire came with a good mem draw for their particular samples so consider the sapphire a great score and still swept. Max scores (check the article) were worse. I tend to think avg is a better rating, you live there mostly. Min/max are rarely hit. Just4u already said it. 680 wins. It's either a wash or landslide depending on games and having cash as no obstacle I'd go gtx 680.
    More regarding all 600 series:
    http://www.hardocp.com/article/2012/05/29/galaxy_g...
    "Since the introduction of the GeForce GTX 680 we have seen the launch of the GeForce GTX 690 and GeForce GTX 670 all providing the best performance and value in their class."
    Same article bottom line on $535 cards in SLI:
    "These cards are a beast in SLI, providing us the best performance possible at 5760x1200. There is no question these also beat Radeon HD 7970 CrossFireX to the punch at every turn."

    Smack...As an AMD fanboy I hold little hope for AMD. They are fighting with billions in debt (junk bond status credit, think of them as Spain/Greece, hard to borrow and gets worse and worse), little to invest, lots of interest on the debt, vs. NV with 3bil in the bank in CASH, no DEBT, no Interest on NO debt. I believe the age of AMD catching Intel or Nvidia is over. Bummer. Our only hope is NV buying AMD once they plummet enough (after losing billions more no doubt), and getting back some CPU competition as NV could invest in cpu design to get this game going again. I could see IBM or Samung pulling this off too (maybe even better as I think both have far more cash, and both have fabs). IBM/Samsung could really put the hurt on Intel with AMD buyouts. It would be a fair fight on cpu for sure. NV may be able to pull off both gpu and cpu as they have no fabs to keep up (which can kill you quickly if you screw up). Interesting thoughts about all that roll around in my head...LOL. For now though, NV is on a path to get 10bil in the bank by 2014 xmas I'd say if not at least by 2015. Like NV or not, they're CEO is smarter with money and never loses it unless he hurts someone else for doing it. He never prices their products at a loss like AMD. He makes smarter moves and thinks further ahead with a bigger picture in mind.

    Motleyfool.com thinks they're the next 100bil company :) The Gardner brothers are NOT STUPID. I will be piling my money in this stock until it goes over $20. They're getting close to returning to the profits of old when it was $35 in 2007 and no dilution in the stock since then, with another 1.5bil of buyback scheduled last I checked. Same cash as 2007 and much stronger company with acquisitions since 2007. AMD is going the other way and investors are scared sh1tless :( Bankruptcy or bought by 2014 xmas. You heard it here :) Unfortunately. I cringe as I say it, but at this point it may help our future cpu cheap prices to just get this over with and get them bought by someone who can help AMD before there's nothing left and they're cpu's are even worse, while gpu's are starting to show desperation too. The 7950boost is just that. A company with money in the bank would have dev'd a lower wattage/cooler less noisy version for less cost, rather than all 3 going up to try to spoil a launch. OUCH. As much as Ryan etc try to help them, there's no getting around the facts (despite page titles like "that darn memory"...LOL...Yet better performance anyway...why even title pages like that?). Despite attempting to make this a 2560 discussion when only 2% of the world uses it according to steampowered.com hardware survey. Even then, if you look at updated games you could argue it's still a no brainer. Toss out warhead (from 2008) and replace with Crysis 2 you get a 660 victory instead of a loss. Hmmm...

    2GB a hindrance? 4GB do anything? :
    "The 4GB -- Realistically there was not one game that we tested that could benefit from the two extra GB's of graphics memory. Even at 2560x1600 (which is a massive 4 Mpixels resolution) there was just no measurable difference."
    http://www.guru3d.com/article/palit-geforce-gtx-68...
    Funny I thought the 4GB version sucked after reading their review but whatever :) I'd rather have a FASTER 2GB than same speed 4GB costing a lot more. I'd call the measurable difference the MONEY for nothing.
  • Galidou - Sunday, August 19, 2012 - link

    Nice results there, just too bad these are almost all the games that works better on Nvidia. They forbid themselves from adding portal 2 so it doesn't look too much biased.
  • TheJian - Monday, August 20, 2012 - link

    Including the useless Warhead isn't enough? Screaming the entire time about it having bad bandwidth wasn't enough?
    Skyrim is in there too..Just forgot to mention it

    Again, 680 SLI vs. 7970sli
    78fps to 62fps (avg. to avg).

    Heck even the single beat it with 72fps..
    "GALAXY GTX 680 GC SLI was 26% faster than AMD Radeon HD 7970 CFX at 8X MSAA + FXAA."

    Skyrim not good enough too? So what game would you like me to point to? I'm sorry it's difficult to point to a winner for AMD. :)
    So lets see, it's biased in your mind on Skyrim, Batman AC, Witcher2, Battlefield3, Battlefield 3 Multiplayer, Portal 2, max payne 3...That rules out HardOCP I guess. Anand added a few more, Shogun 2 (another landslide for 660 TI, even against 7970), Dirt3 used here anand - Wash (though minimums do show Nvidia as Ryan points out)...
    Civ5, landslide again at 1920x1200 here anandtech...Metro2033 here anandtech, <5% win for Nvidia %1920x1200 (I call it a wash I guess)...

    So which game can I point to that will be OK to you? I'm running out of games to find a victory for AMD, so just give me what you want to see...IT's kind of hard as you can see to give you the viewpoint you want which is apparently "nothing will make me happy until AMD wins"...Am I wrong, or at what point do you accept reality?
  • Galidou - Wednesday, August 22, 2012 - link

    Yet another result before the big driver improvements, poor fanboys, they lack on informations and they're totally uninformed about drivers enhancements. A while ago AMD said they were changing their tactics about drivers development. That was like 3-4 months ago I think. Since then, we see really big improvements from the drivers.

    Last 12,8 catalyst brings:
    •Up to 25% in Elder Scrolls: Skyrim
    •Up to 3% in Battlefield 3
    •Up to 6% in Batman: Arkham City
    •Up to 3% in Dues Ex: Human Revolution
    •Up to 6% in Crysis 2
    •Up to 15% in Total War: Shogun
    •Up to 8% in Crysis Warhead
    •Up to 5% in Just Cause 2
    •Up to 10% in Dirt 3

    All in one driver realesed in august, any review prior to gtx 660 ti is then flawed. And there's probably much more to come considering Nvidias fanboys have been whining about their drivers for years. Their team focused on the good way to improve drivers, how much will they be able to improve them? They were SO bad at making drivers than anyone buying an AMD card couldn't even play the slightest game without it crashing, overheating the card and making you cry to your mother to buy an Nvidia card..... Imagine!!
  • CeriseCogburn - Thursday, August 23, 2012 - link

    A lot of reviewers have very recently commented on how crappy amd drivers are - and this just past release came out with - NO DRIVERS for amd...

    Then 5 top review sites had half the games crash on amd, and had to toss some out of the reviews.

    do you have AMNESIA ? are you sick ? a little under the weather, or just a fanboy liar who plays only one game Skyrim ( ROFL) except for the other games you said you play the prior page - and you're just an overclocker...

    So just an overclocker and 2x6850 and they suck for OC
    http://www.anandtech.com/show/4002/amd-radeon-hd-6...

    Way to go... LOL I mean the scaling is pathetic. your not a very smart Ocer.
  • Galidou - Thursday, August 23, 2012 - link

    And then again with the attacks and hatred on my choice, attacking my personnal life once again.

    ''do you have AMNESIA ? are you sick ?''
    ''your not a very smart Ocer. ''

    I did not buy them for ocing, I got them because I had an opportunity and I paid them like, dirt cheap. But still you attack me lacking of respect not even knowing the reasons why I did that. And again with the crashing, I changed to 12,8 driver on my 6850 and it did improve my skyrim performance and none of my other games crashed. Sorry for those reviewers.
  • CeriseCogburn - Thursday, August 23, 2012 - link

    Ok, so in other words, you're the noob, that knows very little to nothing.
    BTW- knowing your an amd fanboy means we all KNOW you scrinched and scrunched (at least in your own stupid head) every little tiny "penny" in your purchase of the AMD videocard...LOL - THAT'S A GIVEN DUMMY.
    Ok, so, in light of that STUPIDITY - you have that same crappy set in WATER COOLING,- DUAL WC...
    And.... "I don't even know why you got them".
    ROFL - dude, either you're lying an awful lot, or you actually needed my help back then, desperately.
    So you waggled up your big water overlcock OC manness, and now we find out... LOL
    This is not happening ! (x-files quote)
  • CeriseCogburn - Thursday, August 23, 2012 - link

    newegg verified owner most helpful 660Ti link from thejian
    " Pros: Runs very quiet and overclocks like a champ. My card hits 1330 core and is completely stable. "
    LOL
    OUCH.
    Oh well, no more OC whiny whine ... tsk tsk how painful
    ROFL
  • Galidou - Sunday, August 19, 2012 - link

    And there's even twice Battlefield 3(single and multi) LOL @ the bias :)
  • CeriseCogburn - Thursday, August 23, 2012 - link

    5760x1080 you lose
    http://www.bit-tech.net/hardware/2012/08/16/nvidia...

    1300+ 660Ti core, you lose again
    7000+ memory, you lose a third time

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