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*** GTX 670 Overclocking Thread ***

Soldato
Joined
30 Nov 2011
Posts
11,375
So how about this, everyone who has gotten a 670 and wants to overclock it, post your results in this thread and I'll keep the OP updated with some graphs to see if we can work out if there are any conclusions to be drawn.

I will need each of you to post;

Make & Model:
Best Boost clock:
Temp:
Noise:
Heaven Score:
Heaven Avg. FPS:


Make and model are pretty self explanatory, but also note here if you've modified the card in any way - aftermarket cooler or water block etc.

When I say "BEST" boost clock, I don't mean maximum when you first start up, I mean after your card gets up to operating temp, then what does the card tend to run at... so if you are hitting 70 or 80C, what does it then run at.
just to clarify, the best clock doesn't need to be in heaven, it can be your favourite game or other benchmark, which ever is the most consistent (e.g. if heaven is the lowest and another benchmark + game both show the higher clock then go with the higher one)
Game Stable boosts only please.

If you want to run heaven and post scores you can (for settings please use 1920x1080, 4xAA, 4xAF and Normal Tess as per the other thread just to try to keep some consistency). Links to screenshots (don't have to be full size) of afterburner and heaven would be appreciated but not essential. I'm not running a leader board here so there's nothing to gain by lying.

Noise: now this will be the most subjective one as we don't all have DB meters at home, but what I would like is one of the following:

None basically this is where you can just barely hear it, or even can't hear it at all over the noise of your case fans (if you have a particularly noisy CPU heatsink/fan then please note this)

Audible this is where you can hear it as a distinct noise but not annoyingly so

Noisy this is where to get the OC that you've posted up you have to set the fan up to a point that it is clearly audible and without something like headphones on you would find it annoying in an otherwise quiet room


I'd prefer if people kept chat to a minimum on this thread (either go to the main 670 thread or start a new one) as it'll start to make things difficult for me to keep this one updated if there's too much chatter and not enough results. I'll be keeping a note of usernames too so if you achieve a better clock, don't worry I won't count you twice, I'll use your most recent one - so if you get a better clock or if your previous best is no longer stable I'll keep that updated too.

If you are in the process of OCing your card, please don't post up every 20 minutes saying "no I've got this, then this, then this"... do your OC, spend a day on it and then post up your result.

Hopefully we'll start to see if there is any pattern to a particular card doing a high OC, or if it's just random... I'm also hoping we get a few watercooled cards in so that we can see if the long PCB cards still beat the short ones when watercooled or not, so people can make an informed decision based on a wide spread of data instead of a few reviews which may or may not have been cherry picked review samples.
 
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here's the results so far

670resultsx.jpg
 
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thanks!
just to clarify, the best clock doesn't need to be in heaven, it can be your favourite game or other benchmark, which ever is the most consistent (e.g. if heaven is the lowest and another benchmark + game both show the higher clock then go with the higher one)
 
does it have to be stable or a heaven run is fine?

I'd prefer game stable... if heaven makes your OC crash but playing say BF3 for 3 hours doesn't and you are happy with running like that then post it

This isn't like the Heaven thread where it's purely for epeen, I'm trying to build usability stats so really it would be useful if people stick to posting up results that are used for every day gaming, rather than one of benchmarking results
 
I last updated it yesterday, will do an update at the end of the day

my plan is to do all sorts of graphs once we've got a bit more data to play with, 1-2 data points per model isn't really enough to draw conclusions

where data format matches mine I might drag some in from reviews to flesh it out a little (and the main 670 thread as some people are posting in there but not here)
 
Got my windforce 670 upto (from memory, not exact figures):

1300 core
6610 memory
(heaven stable with the fan turned up)

I think there is more to be had but not much. I've had a few "driver hangs" a bit over that on both core and memory.

24/7 i'm currently running:
1250 core
6400 memory
(default fan profile, it never gets hot!)

Pretty pleased tbh.:)

can you copy and paste my information from the OP, I need everything (except heaven scores if you can't be bothered), not just clocks ta!
 
sorry guys, it can't happen, all the 670's are hardware locked to 1.21v (when read with a voltmeter directly) which reads as 1.175 in software... unless they do a hall of fame edition type of thing, there won't be any volt modding without a soldering iron involved

anyhoo, my results

Make & Model: EVGA basic (not SC)
Best Boost clock: 1251 (after 70C declock - hits 1270 before that)
Temp: 75
Noise: fan on full, quite noisy (like a whoosh noise, no mechanical whine)
Heaven Score: 1251
Heaven Avg. FPS: 77.2

this is ok, but what has really impressed me is that if I down clock it to 1201 I can leave the fan on 1:1 degrees for % so it sits at 65C and 65% fan even in this hotter weather which is barely audible over my case fans and I still get high 1900's in heaven
also looks like I have a good candidate for water, if I can keep the temps down I'm sure it will do a little more

1201 at 64C image
 
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the windforce is certainly the most consistent in terms of high clocks and low temps whilst being audible or even not heard over case fans in a few cases
the asus is decent clocker but not very cool unless you whack the fans up high
the KFA2 EX OC is a bit random - it's either quiet or a good OC but not both it would seem

in terms of actual benchmark performance, the reference cards are aquiting themselves quite well, though tend to be on the noisier side, but temps don't seem to be running away and might even be good candidates for watercooling (as opposed to paying over the odds for an aftermarket aircooler and then replacing it anyway)

I would love to see ref 670 on water results to verify this

based on a sample of 1 (which is not much to go on) the jetstream seems like a poor choice as it's not particularly cool, or quiet, or good at OC

updated results here;
http://forums.overclockers.co.uk/showpost.php?p=21922576&postcount=2
 
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this may seem a crazy question but how are maximum boosts being calculated. I have seen some posters stating they have had boosts of 1350 mhz yet looking at their evga precision screen shots they have increased the overlcock by 153 mhz etc to 1250 and left it at that.

Also with memory what sort of overlclcok should i be setting precision at to get a decent memory OC. I have a windforce and have my core at +153 which is stable, I cant work out how much i should set my memory overclock at.

I see people claiming 7000 on memory but my memory is a lot lower than that ie its around 1500 mhz (surely people are not clocking it by another 5500 mhz)

maximum boost aren't being calculated, they are being read from EVGA PrecisionX (or afterburner, or GPU-Z) - there is a trace that runs that you can select what is displayed - if you run heaven in windowed mode you can have EVGA precision in the foreground and make adjustments and read the live data while heaven is taxing the card, take a look at this screenshot you can see at the bottom and the main window it is reading 1201mhz
1201 at 64C image

memory wise they run default at effective 6000mhz, so if you are reading 1500 default then you mulitply by 4 to get the effective rate (I think in precision X the slider is only doubled, so +600 = +1200 effective or 7200)

as mentioned you also can't do any damage by setting the power target to it's maximum %
 
I hate to put a downer on this but will 2GB be enough for that sort of resolution? Just a question :)

Yes it most probably will. There are a few cases of 3 screen (5760x1080) just just starting to bottleneck at 2GB and a single hi res monitor is 30% less pixels to play with, so 2GB should be fine for the foreseeable future.

Even 3 screen 1440p only bottlenecks QuadSLI 2GB in BF3 if you run 4xAA, with FXAA only it is fine.

With TXAA coming out in the newer games this will help stave off VRAM requirements at this res as well.
 
At Stock my Core clock being 1150, and memory clock 1500 is a score of 1700 at 1920x1080 and normal settings?

are you talking heaven on 4xAA and 4xAniso on normal tesselation?
should be a bit higher than that - low 1800's maybe

1200 - 1250 core are getting 1900's on those settings
 
if it's pcie 2.0 and running at x8 that could be causing a slight degrdation (wouldn't have thought it would be THAT much byt hey)... easy way to check is load up GPU-Z, that will tell you what pcie version and bandwidth you are running at
 
GPU-Z, not CPU-Z

having said that, you are running ivybridge and Z77 board? so it should be pcie3.0 x8 which is the same as pcie2.0 x16... so it shouldn't make that much of a difference if at all
 
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