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***Official GTX 670 thread***

Can anyone help?

Got a palit GTX 670 and occasionally when in a MP game on SC2 my probes carrying gas lok a bit corrupted in so much as they are carrying a triangle of gas half the size of the nexus. Anyone else encountered this?

Also started to get some tearing but vsync is on.

Trying to estbalish if a random foible with the game or my card is starting to develop a problem. Running latest non-beta nvidia drivers and all uptodate with windows/game.

Any ideas? Card or system?
 
welshdragon

Any problems in any other game/s? This being the only real way to eliminate it being a problem in this one specific game (obvious I know... but got to be asked).
 
Remember 1300MHz is an EXTREMELY high o/c boost clock for a 670. Its not something standard which most cards should reach.:eek:

Saying that i'd be dissapointed if a custom cooled 670 with 680 PCB did not reach 1200MHz for benching.
 
OCPete said:
Remember 1300MHz is an EXTREMELY high o/c boost clock for a 670. Its not something standard which most cards should reach.:eek:

Saying that i'd be dissapointed if a custom cooled 670 with 680 PCB did not reach 1200MHz for benching.
Click to expand...

I agree, which is why i'm quite surprised both my cards will run Heaven at 1300 core :eek: saying that the memory clocks don't seem to play ball, with 7000 being the absolute limit for both it seems

3913 is the highest score I've recorded so far although would like to crack 4000. Considering the memory is passively cooled on these cards the back plate really does get rather warm.
 
screenshotzo.png


Could be interesting..
 
Hi everybody! This is my first post here on overclockers.co.uk.

I have a rather good palit jetstream 670. It is watercooled with a full cover block (maybe I'll write a thread about my build later) and is heaven-stable at 1367MHz. I believe my memory was running 7400MHz. I run the core 1350MHz 24/7. I have the 1.21V bios.. asic quality 88.6%. It runs so cool and my system is still so quiet, I'd like to push it further. Hunger grows as I eat =)

I found a good volt mod guide for 680. Most of you probably know it already: http://kingpincooling.com/forum/showthread.php?t=1682
I'm an engineer of computer electronics and I might find the guts to mod my 670. Does anyone know about a guide for 670? I believe reference 670 does not have the same Richtek RT8802A PWM circuit as the 680 does, so TIN's guide does not cover this board.. Does anyone have specs/datasheet for 670's PWM circuit? Maybe a schematic/layout of the board?

edit:
found some good pics.. http://cnonlinesg.com/simple/?t4529.html
apparently the PWM circuit is NCP 5392-D
datasheet: http://www.onsemi.com/pub_link/Collateral/NCP5392-D.PDF
This circuit has VID pins to choose voltage. I bet the 2 MSB-pins are hardwired just like TIM pointed out. With two MSB pins hardwired (MSB-->0, second MSB-->1) the voltage hardware limited to 0.81875 V - 1.2125 V. The rest of the pins are most definitely controlled by software. I think this is the range that the unlocked BIOS offers.

Good news is that there are testpads for the pins. It is "easy" to solder wires to these. This means that the VID pins can quite easily be controlled by dip switches like in TIN's guide.
 
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I studied some more. To be able to control by dip switches, tracks must be cut. More intriguing approach might be to control the feedback. VSP pin reads the positive output voltage. If i see correct, there are two SMT components connected to this pin. I'm hoping its an RC circuit. If it is, this pin can be pulled down with a variable resistor. This way I could cheat the feedback into thinking the voltage at output is lower than it really is. I am experienced in electronics, but this is the first GPU overvolting I'm considering here. I appreciate any feedback from you guys!

I find it hard to believe, that there is no reference PCB GTX 670 volt mod done. If you know of any, please please please link it! =)
 
grizzla said:
I am thinking of doing the same upgrade (295 to kfa2 670 ex oc) im guessing its a massive improvement, worth it?
Click to expand...

For me yes. I had my 295 for 5 years and it's still no slouch. I wanted a directx 11 card that would allow me to play the likes of BF3, BO2,War Fighter etc maxed out. I have a 24" Dell monitor so I game at 1900 x 1200 but I wasn't able to play BF3,BO2 at this res on ultra settings. Now I can :) Further down the line I'll change out my IP35 Pro mobo and my 3.3 Q6600 for another boost.
 
I was going to pick up a couple of the 2gb evga FTW cards until I found out they're excluded from the step up programme, only the 4gb FTW and reference 2gb are eligible apparently. Shame really, I may as well just get the cheapest ones I can find, no point in paying any extra for reference style cards than i have to.
 
Bony Maloney said:
For me yes. I had my 295 for 5 years and it's still no slouch. I wanted a directx 11 card that would allow me to play the likes of BF3, BO2,War Fighter etc maxed out. I have a 24" Dell monitor so I game at 1900 x 1200 but I wasn't able to play BF3,BO2 at this res on ultra settings. Now I can :) Further down the line I'll change out my IP35 Pro mobo and my 3.3 Q6600 for another boost.
Click to expand...


Sounds good, i have had my 295 since launch in jan '09 and it is showing its age. I too game at that res on a Dell 24". Seems it would be a good choice to play these games at max sttings. cheers
 
grizzla said:
Sounds good, i have had my 295 since launch in jan '09 and it is showing its age. I too game at that res on a Dell 24". Seems it would be a good choice to play these games at max sttings. cheers
Click to expand...

Just checked my invoice for my last upgrade. Time flies. I have in fact had my 295 for 3.5 years :eek: I could have sworn it was older than that :) Go for it grizzla you know you want it!
 
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