Can bad CPU OC cause worse performance ?

[27MaD]

Hello , so my CPU has been running at 3.76 GHz for a long time , before about 1 week i pushed it to 3.95 GHz and everything was stable , but i've noticed that my performance became worse , games like battlefield 3 , GTA 4 , PES 17 , started stuttering too much , do u guys think it's because of the overclock or i did something wrong ?

 

[dorsetknob]

Overclocking can reduce the effective lifespan of a CPU
CPU Degrades over time and needs more voltage to maintain Stability.
You also might have Temp issues ( your location = Hot Climate/ambient Temps)

 

[27MaD]

Overclocking can reduce the effective lifespan of a CPU
CPU Degrades over time and needs more voltage to maintain Stability.
You also might have Temp issues ( your location = Hot Climate/ambient Temps)

No my ambient temp is 20-30 c , and my CPU temp at full load is around 70 c (69-72) , so i don't think it's a thermal issue .

 

[cucker tarlson]

Yes, it can. especially if you oc the cpu and not raise the power and current limit. It'll throttle and cause worse performance.Download XTU,it's an easy tool,it'll tell you whether the cpu is hitting the power or current limit.

 

[phanbuey]

Did u oc the memory as well or just cpu?

Even if your cpu temps are ok your vrms might be cooking, which would effectively throttle you. Use aida to detect if this is happening.

Usually cpu ocs are either stable or not, and throttling is what causes perf degradation. Memory oc is a different story - there if the settings are off it can cause problems.

 

[27MaD]

Yes, it can. especially if you oc the cpu and not raise the power and current limit. It'll throttle and cause worse performance.Download XTU,it's an easy tool,it'll tell you whether the cpu is hitting the power or current limit.

I have a beasty core 2 duo that is not supported by intel's XTU .

Did u oc the memory as well or just cpu?

Even if your cpu temps are ok your vrms might be cooking, which would effectively throttle you. Use aida to detect if this is happening.

Usually cpu ocs are either stable or not, and throttling is what causes perf degradation. Memory oc is a different story - there if the settings are off it can cause problems.

No i didn't overclock the memory , they are running at 500MHz , if i set it to 667MHz the bios returns everything to stock values.

 

[Ruru]

It could be also because that motherboard is ancient, VRM could be the problem.

 

[27MaD]

Just tried to downclock to 3.83 GHz , and the performance is much smoother than 3.9 or 3.95 GHz.

 

[dorsetknob]

You got a 65w tpd Cpu overclocked from 3.06 Ghz to 3.7-9 Ghz on the Stock Intel Cooler
That's going to draw more power and heat especially to those poor VRM

 

[27MaD]

You got a 65w tpd Cpu overclocked from 3.06 Ghz to 3.7-9 Ghz on the Stock Intel Cooler
That's going to draw more power and heat especially to those poor VRM

Yes i know that it's producing more heat but i dont think 70 c will harm my CPU .

 

[dorsetknob]

it's producing more heat but i dont think 70 c will harm my CPU .

and heat especially to those poor VRM

YOU Seem to fail to understand that overheating VRM = CPU Throttling and probably/potentially Catastrophic Motherboard Failure.

 

[Vayra86]

YOU Seem to fail to understand that overheating VRM = CPU Throttling and probably/potentially Catastrophic Motherboard Failure.

Stock Intel is in fact one of the better solutions to get airflow over the VRM section. Much better than a tower or case fans. You'd almost think it was on purpose

 

[Flow]

Any piece of hardware overclocked too much can throttle/stutter. Videocards are also prone to that, since most wont list memory temps.
Some parts simply can't go any faster, eventhough they appear stable and not too hot.

 

[27MaD]

Guys , i've found the issue , it's not the VRMs , it's a memory frequency issue , as i said i was able to go up to 3.95 GHz but i had to reduce the memory frequency from 667 MHz to 500-516 MHz , i tried 3.76 GHz at 667 MHz & everything was smooth as it should be ( at least like it was before attempting to push the CPU more than 3.76 GHz) , than i tried the same CPU speed (3.76 GHz ) but at something around 500 MHz , the same stuttering happened again at the low memory frequency ! didn't expect that there is a difference between 667 and 500 MHz.

 

[cucker tarlson]

so a memory/fsb ratio issue ? if 3.76ghz and 667mhz on memory works best then you've found your spot.

 

[sepheronx]

Ended up a lot of you jumped the gun and said what it was, wasn't what it was.

 

[agent_x007]

Cause is probably a chipset strap change.
High FSBs can only be reached when chipset doesn't do much per cycle (or by upping NB Voltage).
You don't have control over that in BIOS (too cheap MB).
Also, those chipsets don't have 400MHz strap by default.
If you want highest FSB speed, increase PCI-e frequency for better stability.

 

[dorsetknob]

Ended up a lot of you jumped the gun and said what it was, wasn't what it was.

Raising Concerns about the VRM Temps " is not jumping the Gun"
it was a legitimate concern By some
OP is on a very limited budget and no one here would like to hear he had the magic Silicon Smoke appear.

 

[27MaD]

so a memory/fsb ratio issue ? if 3.76ghz and 667mhz on memory works best then you've found your spot.

Yeah that's my sweat spot , at 3.77GHz at 667MHz , the pc crashes 3.76 GHz everything is fine .

Cause is probably a chipset strap change.
High FSBs can only be reached when chipset doesn't do much per cycle (or by upping NB Voltage).
You don't have control over that in BIOS (too cheap MB).
Also, those chipsets don't have 400MHz strap by default.
If you want highest FSB speed, increase PCI-e frequency for better stability.

Tried to increase the PCI-E frequency several times , it always returns to 100 , i wrote a thread about this problem before 4 months and it ended up without any solutions.
everyone was like : ahahahaha looks like this noob wants to overclock his Geforce210 ( before i buy my 750 TI ) so he can play ping pong , some of them didn't even know what PCI-E frequency is .

 

[storm-chaser]

Raising Concerns about the VRM Temps " is not jumping the Gun"
it was a legitimate concern By some
OP is on a very limited budget and no one here would like to hear he had the magic Silicon Smoke appear.

But that's not a legitimate concern because OP found the problem and it's related to memory freq. not the VRMs overheating.

And CPU's don't often degrade over time and don't often require more voltage. I have core 2 duos and quads that still run 4.3 - 4.6 ghz just like the day I picked them up. I've personally never had the need to add more voltage short of one CPU that was overclocked to 4.0Ghz for seven years. Even then it was CPU-NB voltage not core voltage. But everyone has a different story to tell.

 

[dorsetknob]

But that's not a legitimate concern because OP found the problem

Sorry that point/Concern was raised several DAYS before OP discovered the Source of his Problem.
So in "MY OPINION IT WAS A LEGITIMATE CONCERN" AT THE TIME

 

[storm-chaser]

Sorry that point/Concern was raised several DAYS before OP discovered the Source of his Problem.
So in "MY OPINION IT WAS A LEGITIMATE CONCERN" AT THE TIME

I'm not saying you weren't trying to help only that your recommendation turned out to be wrong once the OP updated the thread. Nothing wrong with that we were all trying to help get him on the right track, that's all.

 

[eidairaman1]

Yes it can

 

[storm-chaser]

Yes what can?

 

[eidairaman1]

Hello , so my CPU has been running at 3.76 GHz for a long time , before about 1 week i pushed it to 3.95 GHz and everything was stable , but i've noticed that my performance became worse , games like battlefield 3 , GTA 4 , PES 17 , started stuttering too much , do u guys think it's because of the overclock or i did something wrong ?

Yes what can?

I was answering the OPs question