Overclocking Ratio? Is there a trick to this?

Hey guys,

I am trying to overclock my 8600gt 256mb GDDR3 card. I can overclock, but not nearly to the levels that most of the threads I read are at. Is there a ratio of core speed to memory speed that I need to maintain? If I boost the core speed, do I need to boost the memory speed and vice versa. Thank you.

 

Both help performance but in different ways. Both generate heat. For lots of GPUs, you can overclock the RAM or core area higher, if you do the other less or not all all. It's a balance (every game is different in it's demands and settings) as to what will give the best results.

 

Yessss, it's called:


Good judgement ! LOL...

 

A good rule of thumb is trying to maintain the ratio of your stock clocks.

 

Ive overclocked and it gives results...

I OC'd my 8400M GT DDR3 about 100 mhz above stock clocks.. temps rised about 3degrees Celcius.

U might wanna have a brain and think before you push it too far. If u up your core by 10 mhz, up your memory too by 10 mhz

 

Each by 10 is not a smart idea. Just divide your stock clocks for a good ratio. Like mine is 475/400 is 1.1875. So I try to maintain that ratio. If you increase one too much in relation to the other it you are bottlenecking the system and it may actually cause stuttering.

Also don't worry about pushing it too hard. Your 8600 will clock itself down to prevent any real damage.

 

Maintaining a certain RAM/Core clock ratio only makes sense if the card has the perfect balance for all games and settings between core power and bandwidth. Which none have......

Ever wonder why an 8600GT and 8700GT (which is nothing more than an overclocked 8600) have different ratios?


Another example would be to consider: An 8600GT has more shader power than my card, but 1/2 the bandwidth and much less fill rate. Should we both maintain the our original RAM/Core ratios when overclocking for all games?

For best performance gains, overclock whatever your card is worst at in any given game.

 

Typically the more speed you can get on the ram the more improvemnt you will see, cranking up the core usuallydoesnt do a whole lot, OCing is never guarenteed, some parts will go sky high without a hitch, some will barely go up at all.

 

What you mean is that it will USUALLY clock itself down before it gets damaged.
"Don't worry" is quite possibly the worst advice I've ever heard in relation to overclocking. Even if NVidia try to prevent any damage, it's still perfectly possible to fry your GPU.

 

Have you heard of anyone frying their 8 series? If so its a freak thing because for all the fear of it very little have had problems with it. The card often recognizes before you launch a game that the clocks are too high and enters a lower powered state.

 

you are the most negative person on these forums by far...

i just guess usually when im OCing...lol....dont do what i do

 

I believe CPU's have the same protection. I saw a thermal throttling/protection setting in RMclock somewhere. Even if the above does exist its still possible to destroy your parts

 

i just know that with people, they can break anything (even in ways not thought possible)

 

Do you have any logic or reference behind for using the clocks ratio?

Thanks beforehand.

 

As long as your laptop starts off hovering around 50~ degrees to 60-70 when gaming, your good to overclock.


remember to buy a laptop cooler! its a must if your OCing!


think Zalman Nc1000

 

Well that's SOOOOOOOOOO not true...

I've been seing some artifacts (in fact, MANY!) since I've installed this new driver 174.31...

I was even "forced" to decrease my former stable OC settings because of it... Now, I've been running the gpu @485MHz and memory @750MHz...

And that's only 10MHz more than the stock clock for the GPU... but if I try to increase it any further a lot of artifacts and crazy things start to kick in!

 

Who's quote is not true? You quoted 4 different people.

 

I dont understand your post, artifacting isnt a safety mechanism, its a sign you've either pushed things too far, or your cooling mechanism is failing. And the multiple quotes make no sense to your satement collectivley

 

You were all talking about a "supposed" mechanism that would avoid Nvidia's 8 Series from getting burned, by reducing the clock of the board before it could get any real damage...

SO, I just said this "mechanism" is totally bullsh... cause my card has NEVER reduced it's own clock when gaming... so, if I haven't reduced it myself, I'd probably had burned the whole thing up!

Then, ppl should know that IF they OC a vga cards pushing it beyound its limits, it probably WILL get burned unless they pay much attention to the artifacts/restarts that might happen before it tosts...

About the multiple quotes... I was just massing w/u...

 

Well theres something wrong with your card or laptop if its overheating with such a low overclock. This occurs within the gpu's bios which has a critical temp range when reached will trigger the card to downclock.

 

As above, temps is what triggers the safety thermal downclock.

If you look at your BIOS settings using NiBITOR (Nvidia bios editor). You will see this fail-safe feature and what they are set at

 

And using this bios editor (that you said) could or should I change something at my Bios?