NVIDIA GeForce GTX 670 Review Feat. EVGA: Bringing GK104 Down To $400
by Ryan Smith on May 10, 2012 9:00 AM ESTOC: Power, Temperature, & Noise
Our final task is our look at GTX 670’s overclocking capabilities. Based on what we’ve seen thus far with GTX 670, it looks like NVIDIA is binning chips based on functional units rather than clockspeeds. As a result GTX 670 could have quite a bit of overclocking potential, albeit one still limited by the lack of voltage control.
| GeForce 600 Series Overclocking | |||||
| GTX 670 | EVGA GTX 670SC | GTX 680 | |||
| Shipping Core Clock | 915MHz | 967MHz | 1006MHz | ||
| Shipping Max Boost Clock | 1084MHz | 1188MHz | 1110MHz | ||
| Shipping Memory Clock | 6GHz | 6GHz | 6GHz | ||
| Shipping Max Boost Voltage | 1.175v | 1.162v | 1.175v | ||
| Overclock Core Clock | 1065MHz | 1042MHz | 1106MHz | ||
| Overclock Max Boost Clock | 1234MHz | 1263MHz | 1210MHz | ||
| Overclock Memory Clock | 6.9GHz | 6.6GHz | 6.5GHz | ||
| Overclock Max Boost Voltage | 1.175v | 1.162v | 1.175v | ||
Because of the wider gap between base clock and boost clock on the GTX 670 we see that it doesn’t overclock quite as far as GTX 680 from a base clock perspective, but from the perspective of the maximum boost clock we’ve slightly exceeded the GTX 680. Depending on where a game lands against NVIDIA’s power targets this can either mean that an overclocked GTX 670 is faster or slower than an overclocked GTX 680, but at the same time it means that overclocking potential is clearly there.
We’re also seeing another strong memory overclock out of a GK104 card here. GTX 680 only hit 6.5GHz while GTX 690 could hit 7GHz. GTX 670 is only a bit weaker at 6.9GHz, indicating that even with the relatively small PCB that NVIDIA can still exceed the high memory clocks they were shooting for. At the same time however this is a luck of the draw matter.
The EVGA card meanwhile fares both worse and better. Its gap between the base clock and and maximum boost clock is even larger than the reference GTX 670, leading to it having an even lower overclocked base clock but a higher overclocked maximum boost clock. The real limiting factor however is that it couldn’t reach a memory overclock quite as high as the reference GTX 670 – again, luck of the draw – which means it can’t match the overclocked reference GTX 670 as it’s going to be more memory bandwidth starved more often.
Moving on to our performance charts, we’re going to once again start with power, temperature, and noise, before moving on to gaming performance. We’ll be testing our GTX 670 cards at both stock clocks with the maximum power target of 122% (170W) to showcase what is possible at validated clockspeeds with a higher power cap, and a true overclock with a maximum power target along with the largest clock offsets we can achieve.
Not surprisingly, since we’re almost always operating within the realm of the power target as opposed to the TDP on the GTX 600 series, our power consumption closely follows our chosen power target. Cranking up the power target on the GTX 670 for example to 170W puts us within 6W of the GTX 680, which itself had a 170W power target in the first place. This is true for both Metro and OCCT, which means power consumption is very predictable when doing any kind of overclocking.
This also means that power consumption is still 18W-30W below the 7970, which in turn means that if these overclocks can close the performance gap, then the GTX 670 still has a power consumption advantage.
As to be expected, with an increase in power consumption comes an increase in load temperatures. However the fact that we’re only able to increase power consumption by about 30W means the temperature rise is limited to 4-5C, pushing temperatures into the low 80s. This does end up being warmer than the equivalent GTX 680 however due to the 680’s superior heatsink.
Finally, when it comes to noise we’re also seeing the expected increase, but again it’s rather small. Under Metro the amount of noise from the reference GTX 670 rises by under 3dB when pushing the power target higher on its own, while it rises 3dB when adding in our full overclock. Again the smaller cooler means that the GTX 670’s fan has to work harder here, which means our gaming performance may be able to reach the GTX 680, but our noise is going to slightly exceed it. As a point of reference, in the process we’ll also exceed the GTX 580’s noise levels under Metro. Still, in both OCCT and Metro none of our GTX 670 cards exceed the Radeon HD 7900 series, which means we've managed to increase our performance relative to those cards without breaching the level of noise they generate in the first place.
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Gastec - Tuesday, November 13, 2012 - link
Insanity!CeriseCogburn - Friday, May 11, 2012 - link
When amd has trouble with a game, the reviewer, completely unaware of any amd deficiency (as any good fanboy), has no explanation at the ready, nothing he has been watching for as an identified weakness - unlike the nVidia cards, where the reviewer is on constant watch for what he believes are nVidia card weaknesses." Skyrim is a game that for inexplicable reasons AMD just has some trouble with that NVIDIA doesn’t, possibly driver overhead."
Yes, we know, if amd doesn't do well, it's inexplicable. Something just has to be wrong. Somehow reality has warped.
Then after noting the 670 win fairly, we get this:
" At 1920 we’re clearly CPU limited even with all of Skyrim’s graphical features turned up. "
Instead of saying the 570 beats every amd card at that resolution, or even noting every amd card is stacked at the bottom, period, it's a "cpu problem" - amd didn't fail, the cpu did...
That's not all - after seeing the 570 spank every amd card at the 1920 resolution the reviewer goes on attack, since he mentioned of course earlier in the article nVidia brought up the 570, meaning it would be part of their line up he said, so attacking it is a must, as any good fanboy knows. Never mention is has spanked the 7870 and 7850 and even the 7970 once (civ5) and never mention it spanks the whole amd tier in this game with texture packs and it's "puny memory" at 1920, but go after it...
" GTX 670 is greatly improving on the GTX 570 due to the latter’s lack of memory. 1.25GB is cutting it close here with the high resolution texture pack "
There you have it. Once again. The GTX570 spanks every amd card at 1920 but all it gets is a big fat cut down for 2560.
Oh yes, the whole way it's done is consistently against nVidia.
CeriseCogburn - Friday, May 11, 2012 - link
Here again, an nVidia win is inexplicable. Instead we hear about the amd "strength".When nVidia wins, remember it's unclear why because it should not be happening, amd has a superior strength !
" At this point it’s not entirely clear why the GTX 600 series does so well here (both AMD and NV use SGSSAA), especially given the fact that the Radeons have a memory bandwidth advantage."
Now we can listen to the "on paper" amd fanboys, and the endless fantasy that future drivers and future games mean amd is the "future winner" for the newest cards tested and compared.
Never will we hear the amd core "technology" is weaker and has some severe caveats when it comes to game engines and implementation.
Instead, that with much superior "paper horsepower" on "notional multiplications" based upon less than fully accurate simplified calculations omitting severe bottlenecks in amd architecture and adding in guesses for the "tricks" amd has to "overcome" them, we will always be told the above, instead of the truth.
AMD core design is inferior for most of the game engines.
snakefist - Friday, May 11, 2012 - link
" At this point it’s not entirely clear why the GTX 600 series does so well here (both AMD and NV use SGSSAA), especially given the fact that the Radeons have a memory bandwidth advantage."oh, dear god - as much as i try to ignore you...
do you, or do you not remember NVIDIA cards with 192/384/512 memory bandwidth and how much good this "advantage" brought to them? compared to AMD 128/256 bandwidth of the same generation?
when commenting your post, one is necessarily becoming an AMD fan, since basically everything you say is so biased and (mainly) incorrect or misinterpretation of actual facts
i suspect you secretly work for AMD :)
CeriseCogburn - Friday, May 11, 2012 - link
Are you aware the post you copied is the reviewers words, smarty pants ?Do you realize I was criticizing the reviewers words, his "bandwidth" notional advantage for amd ?
Do you realize you just called the reviewer and idiot and agreed with me ?
YOUR words > " do you, or do you not remember NVIDIA cards with 192/384/512 memory bandwidth and how much good this "advantage" brought to them? compared to AMD 128/256 bandwidth of the same generation?"
Now tell it to the reviewer dumb dumb, since you copied and pasted HIS WORDS from my post, his words, words for word from the review !
ROFLMAO - yes you maybe should become a paid operative for amd, you have the intelligence for it - get everything wrong then attack - you're perfect for them :)
snakefist - Friday, May 11, 2012 - link
nope. i do not realize that. i don't memorize each word of review to be able to write 2/3 comments of 22-pages thread...and i didn't call anyone "an idiot".
what i said is what i believe (furthermore, it could be backed up by numerous reviews from that time - all of them also written by reviewers, perhaps on your surprise). whether this reviewer agrees with me or not on this topic is a simple matter of opinions, and review itself doesn't burst with hate as all your posts do.
CeriseCogburn - Friday, May 11, 2012 - link
Who knows what you said, it isn't clear, because you didn't make it clear.Believe whatever it is you believe,as that is also unclear, and only your opinion, since no facts are present for you, according to you.
Of course you only see hate from me, since I point out the amd flaws, and amd is your fanboy fave, as your other posts clearly show, and no you don't sense hate from the reviewer as he coddles amd, as I pointed out, and that gives you a nice warm feeling of "good opinion" vibrations.
ROFL
It's all too clear.
CeriseCogburn - Friday, May 11, 2012 - link
PS- you called me a lot worse than an idiot, so don't cop out on your hate filled spewing. Of course who expects anything less from an amd fanboy.Let's go with this, so you don't forget, or try to claim white snowy innocence - I certainly hope a bunch of obvious amd fanboys ignore every fact and facet I've presented, and dive, "driven" as you noted, right (back) into their beloved failure, with someone like you doing that, I couldn't receive any greater and lovely reward for my efforts here.
snakefist - Friday, May 11, 2012 - link
i did question your sanity, which i found more than ever a reasonable question. i'm surely not only one who shares this doubt. as for anger-management - i don't find this insulting, you should rather stop living in denial that you have onei did not called reviewer "an idiot", which you implied.
i was not aware that you are making efforts of any kind, except to comment every sensible post of any author with your irrelevant raging about something else... now that you explained it so well, i'll probably stay off your noble crusade of enlightening people with wildly subjective and/or incorrect claims... at least as long i feel like it
facts behind my claims are clearly stated and usually well-known and proven. your last two posts doesn't have single fact, btw
now reap the benefits of your great reward, whatever you might think it is
CeriseCogburn - Saturday, May 12, 2012 - link
Oh stop being a liar, you got outed so now you can't stand yourself.Let's go with near page one where one of your fellow amd fans haphazardly claims the 365mm die of the amd card is so close to the 300mm die of the nVidia card that amd price dropping again is no problem.
Another amd snake applauded the post for the sanity it contained. ( merely because amd fanboyism was served well, of course)
I had to point out, with considerable effort and for the greater good ...
(let's face it amd fans should be ponying up profit dollars for the hurting amd, not demanding low prices be lowered again - it's called putting your money where your mouth is, and where your heart is in this case, something the amd zealouts apparently have, to only their personal and selfish advantage, trained themselves out of - a rude, and debilitating issue for amd - who IMO has greatly encouraged that suicidal behavior )
...that the 365mm die is over 43% larger than the 300mm die.
Now there's just a single example of what needs to happen much more often, so that we can be well informed persons instead of lying brainwashed monkeys.
I certainly do not mind a big 'ol fanboy, in fact that's great, but let's bring it up to a level where a fan can be a self respecting and respected addition, not in need of constant lies, and endless unethical misconduct, right ?
A fanboy should easily support his view with the truth and not be in need of anything other, and as I fairly point out, an honorable fanboy won't be hellbent on squeezing every last dollar from their favorite producer while at the same time preaching corporate profitability "lessons" or sideway gloatings of the same, in direct opposition to their stated personal savings conduct goal and oft lofted talking point rhetoric.