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How much gain from overclocking?

M

MplsBob

Senior member


What sort of percent increase can one usually get from overclocking and still have a stable machine? I realize this varies from processor to processor, but I am trying to find out whether overclocking gets a 1% gain or something much greater than that. So what is a reasonable range of gain?

Thank you all in advance for your responses to my question.
 
If you don't get 10% it's probably not worth it. That being said, just about everything that is worth overclocking is overclockable by 10-25% (cpu and video cards). If you're doing something besides gaming memory OC's might have a large impact, but generally CPU/GPU will have the greatest impact to your actual gaming performance.

My system is a P4 2.8c @ 3.29 = 17.5% increase
9800 Pro 376/337 @ 430/365 = 15% gpu increase
 
Mullzy. What type of heat is your 9800 Pro putting OCed? I have and have been told that it can be ODed to a XT status. Right now my 9800 idels at 43c-45c. Under load its about 50c.
 
I don't have the r360 core so I can't read my temperatures. With the stock cooler I was only able to do about 410 to 415 on the core without artifacting. I added a VGA Silencer rev3 and haven't had any issues at 430 (might even be 435 but I can't remember).

EDIT: I generally game about 5+ hours a night and don't ever lock up, crash to desktop or have artifacts. Hmm... maybe I should push for 440. =)
 
Most overclocking performance are mostly influenced by the processor, motherboard, and memory, but ultimately it is the processor that'll determine the maximum overclock i.e:

In my old P3 based system, with the same motherboard and memory, I could overclock my P3 550E to 825MHz @ 150FSB, but my P3 800E can only reach 920MHz @ 115FSB.

I considered the P3 800E a dud compared to the P3 550E, which could run @ 150 FSB, because the 550E @ 825MHz ran rings around the 800E @ 920MHz.

But then again, a gain of at least 15% is pretty good IMO.

 
I'm not sure which core I have on my 9800 pro and I just have the stock cooling on it. Although one of my teachers at school told me he took the stock fan off of his, and super glued a 80mm fan to the heatsink and now his is at 35c under load.
 
Originally posted by: JE78
I'm not sure which core I have on my 9800 pro and I just have the stock cooling on it. Although one of my teachers at school told me he took the stock fan off of his, and super glued a 80mm fan to the heatsink and now his is at 35c under load.
Click to expand...

How are you able to determine the temps on your card? The 9800pro doesnt have a sensor. IIRC, if you have a 9800p with the r360 core you have to flash to the XT BIOS to enable that feature.

My 9800pro does XT speeds (and beyond) easy. Never had a problem. I do have good case cooling though.

Fern
 
Originally posted by: JE78
I'm not sure which core I have on my 9800 pro and I just have the stock cooling on it. Although one of my teachers at school told me he took the stock fan off of his, and super glued a 80mm fan to the heatsink and now his is at 35c under load.
Click to expand...


who needs thermal paste when there's super glue!
 
Originally posted by: shoRunner
Originally posted by: JE78
I'm not sure which core I have on my 9800 pro and I just have the stock cooling on it. Although one of my teachers at school told me he took the stock fan off of his, and super glued a 80mm fan to the heatsink and now his is at 35c under load.
Click to expand...


who needs thermal paste when there's super glue!
Click to expand...

He's glueing the fan to the heatsink here, not the heatsink to the gpu core. Big difference.
 
I went from roughly 16k (maybe only 15k, never tested the card without flashing it, tested it at stock 9700PRO though and scored 17K when stock clocks are considerably lower) to 23k on 3dmark2001, so that is a BIG difference. However, this involved multiple voltmods, for both the motherboard (for CPU and RAM voltage) and video card (GPU and RAM voltage), so most people will not see as large of an increase.
 
Originally posted by: Maluno
Originally posted by: shoRunner
Originally posted by: JE78
I'm not sure which core I have on my 9800 pro and I just have the stock cooling on it. Although one of my teachers at school told me he took the stock fan off of his, and super glued a 80mm fan to the heatsink and now his is at 35c under load.
Click to expand...


who needs thermal paste when there's super glue!
Click to expand...

He's glueing the fan to the heatsink here, not the heatsink to the gpu core. Big difference.
Click to expand...

Exactly
 
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