EPTJust to clarify, what you mean is:
When you change from, for example, 4.8 ghz to 5.0 ghz, then there may actually be a DECREASE in performance?
Computer Build Resource Thread - Page 952
| Forum Index > Tech Support |
When using this resource, please read FragKrag's opening post. The Tech Support forum regulars have helped create countless of desktop systems without any compensation. The least you can do is provide all of the information required for them to help you properly. | ||
|
Josh_rakoons
United Kingdom1158 Posts
Just to clarify, what you mean is: When you change from, for example, 4.8 ghz to 5.0 ghz, then there may actually be a DECREASE in performance? | ||
|
skyR
Canada13817 Posts
| ||
|
Myrmidon
United States9452 Posts
| ||
|
Josh_rakoons
United Kingdom1158 Posts
Sorry to be asking so many questions and such. But i'm currently running my 7950 at stock settings and very satisfied with it, idol temps are ~48. Any point in overclocking? I saw some reviews somewhere where there was about a 10 frame difference between a non overclocked 7950 and a stock one. | ||
|
Medrea
10003 Posts
On February 28 2012 10:07 skyR wrote: No. He complicated diminishing returns. Going from 4.8GHz to 5GHz will be an increase in performance but the diminishing return is greater than it was from 3.4GHz to 3.6GHz. *Slaps forehead* Thank you. Jesus that was too hard. On February 28 2012 10:12 Josh_rakoons wrote: Ah ok, sounds good. Sorry to be asking so many questions and such. But i'm currently running my 7950 at stock settings and very satisfied with it, idol temps are ~48. Any point in overclocking? I saw some reviews somewhere where there was about a 10 frame difference between a non overclocked 7950 and a stock one. Yeah do it. Go for it. Supposedly they are good at overclocking. | ||
|
Alryk
United States2718 Posts
On February 28 2012 10:14 Medrea wrote: *Slaps forehead* Thank you. Jesus that was too hard. Yeah do it. Go for it. Supposedly they are good at overclocking. Hey! I said it first! XD (Not that I was better or much quicker or anything of course.  ) | ||
|
Josh_rakoons
United Kingdom1158 Posts
Edit** Holy wow, you weren't joking, just cranked it up to core clock 950 MHz and memory clock 1400MHz and max temp was 65C. Crazy.. | ||
|
JingleHell
United States11308 Posts
| ||
|
Medrea
10003 Posts
In all of my video cards that ive overclocked. I intentionally overclock them until they break and then I back off a bit. 65C means you still have plenty of room. I would say keep going. My objective for every GPU is to overclock it until it hits 78C and crashes. Usually 78C comes first but some MSI Twin Frozr models will give up before hitting 78C. I presume some 7950 will be similar. | ||
|
JingleHell
United States11308 Posts
On February 28 2012 11:00 Medrea wrote: As long as you stay away from adjusting the voltage you can't really break it. In all of my video cards that ive overclocked. I intentionally overclock them until they break and then I back off a bit. 65C means you still have plenty of room. I would say keep going. My objective for every GPU is to overclock it until it hits 78C and crashes. Usually 78C comes first but some MSI Twin Frozr models will give up before hitting 78C. The advantage of being an EVGA fan. I'll crush them to 85C under stress and laugh at them. Best case scenario, it melts and they don't have any of my model available for the lifetime warranty, and they send me something better. Actually, I avoid this like the plague unless I'm looking for a specific result, but the knowledge that I could is still satisfying. (Note: this is NOT an endorsement of bad overclocking habits, or any guarantee that you'll break a GPU without causing physical damage that DOES void the lifetime warranty. Also be sure your product HAS a lifetime warranty, as they do offer shorter ones. And NEVER take warranty related advice from someone on the internet.) | ||
|
Josh_rakoons
United Kingdom1158 Posts
| ||
|
JingleHell
United States11308 Posts
On February 28 2012 11:18 Josh_rakoons wrote: Ok, just tried to max out the overclock, got to 84 and i quit out. Turned it down a bit and will run another test when its back to stable. Back cooled down, I assume you mean. Stability refers to freezes, driver crashes, artifacting, or other issues. Just being warm enough to make you nervous on it's own doesn't merit calling it unstable. Keeping your terminology in order makes it much easier if you need help or whatnot. Best way to do it is incrementally, starting off with 15-20 Mhz, 5 minute tests. Once you get to 20% over stock, drop to 5-10Mhz increments. Once you start approaching your max comfortable temp at the 5 minute mark, test for 10 instead, once you're happy with your temp, stress test for a minimum of 6 hours to see if it's stable. Mind you, that's the simple version. That's not how you do it if you're going high or extreme OCs. But you need to do a lot of card specific research to do that, and it's much more in-depth, less forgiving, and complicated. | ||
|
Josh_rakoons
United Kingdom1158 Posts
On February 28 2012 11:23 JingleHell wrote: Back cooled down, I assume you mean. Stability refers to freezes, driver crashes, artifacting, or other issues. Just being warm enough to make you nervous on it's own doesn't merit calling it unstable. Keeping your terminology in order makes it much easier if you need help or whatnot. Best way to do it is incrementally, starting off with 15-20 Mhz, 5 minute tests. Once you get to 20% over stock, drop to 5-10Mhz increments. Once you start approaching your max comfortable temp at the 5 minute mark, test for 10 instead, once you're happy with your temp, stress test for a minimum of 6 hours to see if it's stable. Yeah, sorry. That sounds like a very long, dull, arduous process. I've just been running 15 minute tests in both of the situations. | ||
|
JingleHell
United States11308 Posts
On February 28 2012 11:25 Josh_rakoons wrote: Yeah, sorry. That sounds like a very long, dull, arduous process. I've been running 15 minute tests in both of the situations. Excitement is BAD when aiming for moderate OCs, unless you enjoy the process like I do. Dull is GOOD. | ||
|
Medrea
10003 Posts
Not doing it all at once is key. | ||
|
Josh_rakoons
United Kingdom1158 Posts
| ||
|
JingleHell
United States11308 Posts
On February 28 2012 11:48 Josh_rakoons wrote: What program would you recommend is best for overclocking? I'm using MSI afterburner, i was under the impression it was personal preference but i only have 2 options to increase/ decrease. There's more options, but you should be leaving them locked if you're already bored. Afterburner is good. Actually, until recently, it was better than Precision, which is now playing catch up. And anything else would be excessive or worse. | ||
|
Josh_rakoons
United Kingdom1158 Posts
On February 28 2012 11:50 JingleHell wrote: There's more options, but you should be leaving them locked if you're already bored. Afterburner is good. Actually, until recently, it was better than Precision, which is now playing catch up. And anything else would be excessive or worse. I'm not already bored, Medrea mentioned increasing all the options by 5mhz, so i assumed by "all" he meant more than 2. | ||
|
JingleHell
United States11308 Posts
On February 28 2012 11:52 Josh_rakoons wrote: I'm not already bored, Medrea mentioned increasing all the options by 5mhz, so i assumed by "all" he meant more than 2. He's also a miner, he could have been referencing increasing a dozen or two cards by 5 each. Just stick with core GPU clock unless you plan to do more research. And by "already bored" I was referencing you calling it dull. I doubt you've got the interest in the process, or the specific drive needed to mess with anything else much. Unless you plan to do a LOT of benchmarking, rinsing, and repeating, sticking with the core clock is the best bet. And most people don't ever need to mess with anything else anyways. | ||
|
Shauni
4077 Posts
| ||
| ||
