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~~The GTX 670 Overclocking Master-Guide~~ - Page 26

post #251 of 3357
Quote:
Originally Posted by SeanPoe View Post

Yeah, your RAM is probably currently the problem -- you should be getting zero errors in MemTest86. But you might not have to replace them, you might just have unstable settings in the bios. What RAM do you have? Have you set the voltage and timing in the bios to the factory settings? If so, you might be able to downclock your RAM to make it stable/error-free (though if the RAM is bad, then that won't help either).

They shouldn't be unstable since i'm running their XMP profile setting which is 1600MHz 8-8-8-24 1.5V. RAM is G.Skill Ripjaws X 8GB. I'll try it at 1333MHz then.
post #252 of 3357
Thread Starter 
Quote:
Originally Posted by Lutsk92 View Post

They shouldn't be unstable since i'm running their XMP profile setting which is 1600MHz 8-8-8-24 1.5V. RAM is G.Skill Ripjaws X 8GB. I'll try it at 1333MHz then.

Also try 1600MHz 8-9-8-24 if 1333MHz passes. Usually increasing the second timing can make Gskill RAM stable without sacrificing much performance. If that fails, you could also try 1600MHz 9-9-9-27. And as a last ditch effort, try 1333MHz 9-9-9-27 (and/or 9-10-9-27). My guess is that if you fail at 1333MHz loosening up the timings won't help either though.

Edit: Forgot to say, you should also increase the voltage a bit to around 1.6v before downclocking anything. The maximum safe voltage for a i7-2600k is 1.65v is it not?
Edited by SeanPoe - 6/24/12 at 5:53pm
post #253 of 3357
Hi all again!
This is magic:
"The first thing you should try (if you feel comfortable doing this), is to replace your GPU's Heatsink's TIM."

Before i changed the GPU Heatsink's TIM, with a generic one, my idle temp was 44º now is 40º (42º ambiental temperature in my room T_T), but the best of all its that i can increase my mem OC seriusly.

I got my max stable OC at +65 core, +750 mem.
Gigabyte OC WF
1124 Boost Clock (before Heatsinks's TIM change was 1128)
1254 Max Boost (before 1257)
1879 Mems (before 1739)
80% max TDP 1.175v

So i get an 8% in mems and a decrement in temperature.
I waiting for my 212 evo and a 15g Artic Silver TIM so i will change it again and i expect better results

Screen:
completoe.th.png

Here are all of my unigine test:
67-750 (unestable) I can finish benchmark but it charshed shortly after that.
Average FPS: 51.6
Score: 1300
Min FPS: 22.1
Max FPS: 132.0

70-700 (unestable)
Average FPS: 51.5
Score: 1298
Min FPS: 23.9
Max FPS: 131.6

66-725 (stable but i prefer +50 more mem a -1 core)
Average FPS: 51.5
Score: 1298
Min FPS: 21.1
Max FPS: 131.4

Once more sorry if my english is bad, i hope you can understand at least an 80% of what i wrote.


I tried with 69/68/67/-725/750 and 66-750 but crashed, so I think that my best choice is 65-750 stable (more than 2 hours with enigine on) with good temp, fps and score.
post #254 of 3357
Hello all,

Im new to the forums here but have read artcles and info on this site for years. Its much appreciated.

Okay I just purchased 2 Asus GTX 670 DCUII cards. The regular versions. I had one top card and found it was very unstable and the normal ones overclocked even better.

My problem is both my cards are overclocked using precision x (Ive used afterburner as well). They are +212 core and +426memory. The speeds shown in gpu-z are 1127 mhz for my cores and 1728mhz for me memory. The boosts are 1192 mhz respectively.

This is where it gets wierd. I will run 3Dmark11 and have both my gpu z windows open for each gpu and record all my maxes on each sensor. For my 2nd gpu (lower in the case) it reaches a max core clock of 1336 mhz and the other card only reaches a max of 1282 mhz (the primary card in 1st slot). Why is there a difference in my max clocks? I have run multiple tests and other benchmarks and keep getting the same results. The one card is always 55mhz higher than my other one! I even talked to a tech where I bought the cards and he didnt have an answer for me frown.gif

Neither of my cards break 68 celsius. Fan speeds are max for benching...The top card is usually at 67-68 and the bottom card at 62-63 celsius. Does it have to do with asic quality? The card that boosts higher gets 100% and the lower card gets 91.2% Is this minor or should I take the card back and get another? My cards score 20.357 graphic score on 3dmark11 performance preset. Im happy with that but everybit counts, What are your thoughts guys? Thank you very much!
post #255 of 3357
@ XLR8N - 1336 MHZ on Core is above exceptional over clock. Golden chip quality. 1282 MHz over clock is actually a very decent OC. The fact your card isn't hitting 70C means your not throttling which will force a down clock of 13 MHz on the card. In SLI or even a dual GPU your best OC is your what your lowest OC is capable of. It's very very rare to get two cards to OC the same.

Your better with what's happening in your current scenario then both cards only getting 1282 MHz Core over clock. My dual GPU dosent get same OC even though both my GPU's are on one PCB.
     
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post #256 of 3357
Quote:
Originally Posted by XLR8IN View Post

Hello all,
Im new to the forums here but have read artcles and info on this site for years. Its much appreciated.
Okay I just purchased 2 Asus GTX 670 DCUII cards. The regular versions. I had one top card and found it was very unstable and the normal ones overclocked even better.
My problem is both my cards are overclocked using precision x (Ive used afterburner as well). They are +212 core and +426memory. The speeds shown in gpu-z are 1127 mhz for my cores and 1728mhz for me memory. The boosts are 1192 mhz respectively.
This is where it gets wierd. I will run 3Dmark11 and have both my gpu z windows open for each gpu and record all my maxes on each sensor. For my 2nd gpu (lower in the case) it reaches a max core clock of 1336 mhz and the other card only reaches a max of 1282 mhz (the primary card in 1st slot). Why is there a difference in my max clocks? I have run multiple tests and other benchmarks and keep getting the same results. The one card is always 55mhz higher than my other one! I even talked to a tech where I bought the cards and he didnt have an answer for me frown.gif
Neither of my cards break 68 celsius. Fan speeds are max for benching...The top card is usually at 67-68 and the bottom card at 62-63 celsius. Does it have to do with asic quality? The card that boosts higher gets 100% and the lower card gets 91.2% Is this minor or should I take the card back and get another? My cards score 20.357 graphic score on 3dmark11 performance preset. Im happy with that but everybit counts, What are your thoughts guys? Thank you very much!

See the first link in my signature for the explanation, and keep in mind that a card being in SLI doesn't change it's inherent Kepler Boost value. So what you have going on here is you've got one card with a pretty epic Kepler Boost (1336-1192 = 144MHz) and another card with a fairly normal KB (1282 - 1192 = 90MHz) ... or very close to it (the more or less random strap sizes might throw it off a little bit, so just adjust for them).

The difference in each card sample's Kepler Boost value (which is set at the factory, basically) is why you're seeing ... what you're seeing. It doesn't hurt anything, it's totally normal, but if you just can't deal with it, you can adjust the offset for each card individually by turning off the 'sync similar cards' option in the settings screen of your OC'ing program, and just putting an offset that's (about) 54MHz higher for your card with the lower KB value.

There are some clock 'straps' on Kepler cards though, so in reality you probably want +52MHz (4x13MHz) offset rather than +54MHz if you want them to consistently clock the same thumb.gif

So, if you put a 100MHz offset for the first card, put a 152MHz offset for the 2nd card, and you should end up with the same Max Boost for both cores ... or at least very close to it, depending on how the straps work out.
Edited by brettjv - 6/26/12 at 9:41am
    
CPUMotherboardGraphicsRAM
xeon X5675 6-core @ 4.1ghz (1.29v, 20x205 +ht ) rampage iii extreme msi rx470 gaming X (the $159 budget king) 3 x 2gb corsair xms3 pc12800 (9-9-9-24-1T@1600MHz) 
Hard DriveOptical DriveCoolingOS
hynix 250gb ssd (boot), 2tb deskstar (apps),1tb... plextor px-712sa - still the best optical drive... corsair h8o v2 aio W10 home 
MonitorPowerCaseAudio
asus vw266h 25.5" (1920x1200) abs sl (enermax revolution) * single 70A rail 850w silverstone rv-03 XFi Titanium 
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CPUMotherboardGraphicsRAM
xeon X5675 6-core @ 4.1ghz (1.29v, 20x205 +ht ) rampage iii extreme msi rx470 gaming X (the $159 budget king) 3 x 2gb corsair xms3 pc12800 (9-9-9-24-1T@1600MHz) 
Hard DriveOptical DriveCoolingOS
hynix 250gb ssd (boot), 2tb deskstar (apps),1tb... plextor px-712sa - still the best optical drive... corsair h8o v2 aio W10 home 
MonitorPowerCaseAudio
asus vw266h 25.5" (1920x1200) abs sl (enermax revolution) * single 70A rail 850w silverstone rv-03 XFi Titanium 
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post #257 of 3357
Even at max fan speed, my gpu goes over 70 degree under heaven dx11 benchmark with a mild overclock and it crashes

Core clock +100
Memory clock +396

it idles at 32 though

i'm getting thermally throttled, my score is like 1036
Edited by jinny69 - 6/26/12 at 7:01pm
post #258 of 3357
^^

Similar to jinny, I get over 70 degrees on my heaven benchmark. I have a reference Galaxy 670, 120 core clock offset, no mem clock OC... fan curve is correct too.
post #259 of 3357
Hello all, I've playing with my new GTX 670 today. Thought I'd post up what I've squeezed out of it so far. I'm really chuffed with it, seeing as my 1st step up from EVGA was DOA. Then to my surprise they have sent me a GTX 670 FTW. My new build consists of a Silverstone FT03 case, next to no airflow so temps have been my biggest battle, I had to crank up the fan to the max a bit earlier then the guide showed but I can just about keep the temps at 69 degrees during a Heaven bench. My max clock I can maintain is 1316mhz and just over 7000mhz on the memory. I think My 3d Mark score is low , not sure why that isNot too bothered on that one. thumb.gif gtx 670 overclock.png 1377k .png file
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CPUMotherboardGraphicsRAM
I5 2500k Msi H77 Gtx 780ti Classified Kingpin Edition G.Skill sniper  
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Hitachi  Seagate Samsung 840 EVO Samsung External 
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Fractal Design Arc mini r2 Corsair m65 Razor Plantronics Gamecom 
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My System
(17 items)
 
  
CPUMotherboardGraphicsRAM
I5 2500k Msi H77 Gtx 780ti Classified Kingpin Edition G.Skill sniper  
Hard DriveHard DriveHard DriveOptical Drive
Hitachi  Seagate Samsung 840 EVO Samsung External 
CoolingOSMonitorPower
Corsair h80i Windows 7 64bit Lg 24" Xfx 750w 
CaseMouseMouse PadAudio
Fractal Design Arc mini r2 Corsair m65 Razor Plantronics Gamecom 
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post #260 of 3357
Thread Starter 
The guide has now been translated to Italian over at hwupgrade by johnnystuff if anyone is interested in that version wink.gif
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