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Worse Bench-marking scores after big overclock

Ok so I am a little confused because I have a totally stable overclock and I am getting a little bit worse results in benchmarks.
Before OC:
Intel 6600k 3.5ghz (stock voltage)
EVGA GTX 960 SSC (I think some where in the margin of 1292mhz)

After OC:
Intel 6600k 4.5ghz (1.3 V)
EVGA GTX 960 (in precision X) (110% power) (1500mhz)

No OC scores
Catzilla: 8291
Firestrike: 6661
Cinebench R15: CPU (602cb) OpenGL (125.70 fps)

OC scores
Catzilla: 8283
Firestrike: 6641
Cinebench R15: CPU (697cb) OpenGL (151.50 fps)

The Cinebench scores actually made sense, does it make a difference that they were the first to run? The only things I had running alongside the benchmarks were notepad and CPUID HWMonitor. The temps were really good, never getting over 50 C.

Any questions about my build can be answered in my signature
3 answers Last reply Best Answer
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  1. Best answer
    it's entirely possible to have an "apparently" stable overclock and get lower scores if the overclock is NOT stable or something is overheating. It doesn't really happen with AMD cpus because they get very very unstable, but INTEL cpus are "smart" to the point that they'll actually underclock themselves if they're overheating even if they're overclocked (this behavior is why the original reviews of haswell seemed to imply the initial launch of haswell was a good overclocker, the reality was the cpus were down-clocking during benches with unstable overclocks or when overheating, and it was happening so fast that professional overclockers didn't realize this behavior was happening until they started to actually bench for high metric numbers and noticed nothing was improving with clock speeds). Nvidia gpus do the same thing, especially if they're overheating.

    I suggest you get something to monitor temps and clock speeds and watch closely what happens when stressing the system. I'm willing to bet something is throttling; and if nothing is throttling something is probably moderately undervolted.
  2. ingtar33 said:
    it's entirely possible to have an "apparently" stable overclock and get lower scores if the overclock is NOT stable or something is overheating. It doesn't really happen with AMD cpus because they get very very unstable, but INTEL cpus are "smart" to the point that they'll actually underclock themselves if they're overheating even if they're overclocked (this behavior is why the original reviews of haswell seemed to imply the initial launch of haswell was a good overclocker, the reality was the cpus were down-clocking during benches with unstable overclocks or when overheating, and it was happening so fast that professional overclockers didn't realize this behavior was happening until they started to actually bench for high metric numbers and noticed nothing was improving with clock speeds). Nvidia gpus do the same thing, especially if they're overheating.

    I suggest you get something to monitor temps and clock speeds and watch closely what happens when stressing the system. I'm willing to bet something is throttling; and if nothing is throttling something is probably moderately undervolted.


    Im starting to think that something might be undervolted. As I said in the description, the temps never got over 50c.
    I have a pretty decent cooling setup, 8 total fans including the rad fan and the PSU fan and a corsair H60, plus the graphics card has the ACX 2.0 cooling. Should I get something else for graphics card OC? Precision X only lets me add 10% to the GPU power and Im thinking I might need more. I think I will definitely add more voltage to the CPU
  3. well i don't recall reading anything that implied the gtx960 was a good overclocker. so you might have to back the card's overclock down a bit. That said the go to app for overclocking gpus is and always has been MSI Afterburner.
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