Will CPU core disabling significantly increase my maximum overclock?

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0r4ngenm4ul

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Aug 31, 2016
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Hey overclocking community, I was just wondering if CPU core disabling will significantly increase my maximum overclock in order to get a nice single core performance. I know how to overclock, temperature limits and so on. Probably you're wondering why I would disable cores, well, I'm running the FX 6300 and since single-core performance is really important for games, I thought that I could "downgrade" my CPU to a 43xx in order to get a better single-core performance. So, post your thoughts please, thanks! Oh, and my definition of significant would be around 500MHz I think.

[UPDATE 24.12.] Ok, so it seems like it isn't worth it. Now it's pretty clear because I found a thread with the same question and it wasn't worth it. I also tried to do it on my own but even with 2 out of 6 cores enabled I could just go up 400MHz. So definitely not worth it. I think that I'll stick in with overclocking the NB bus speed by raising the FSB again. BTW: The 4.7GHz single core performance was the same, maybe even lower than the 4.3GHz with NB OC single core performance. I think everybody knows how the multi core performance is with 2 cores enabled...

CONCLUSION: If you're okay with a dual-core (or even a single core), don't care about multi-tasking and want to get the best single core performance out of the CPU, then you can do it. But I doubt that even enthusiasts would do that...
 
Solution
Shaun o
sadly turning off cpu core will not in fact increase the performance of single core work load.

More to do so with Fx based Amd cpu`s.

How you gain better single core cpu performance is all about how many IPC`s the single core can do.
IPC is Instructions Per Clock cycle 0r4ngenm4ul the more instructions executed in a single clock cycle the better the cpu is at single core processing.

Overclocking to an extent increases the frequency of a cpu so it can perform more instructions per second in s shorter amount of time.

But it depends on how the cpu it`s self is made and how it executes data.
That also determines it`s single core IPC rating.

Intel Cpu`s are far better at crunching through data because of the way the cpu is designed and...
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EdgeT

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Jan 8, 2009
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Haha, all depends on what you're doing with it, if you've got 0 programs running in the background, it could yield some extra performance, but as soon as you'll multitask, you'll miss the extra cores. I'm not even sure it's worth it for HT-capable Intel CPUs for gaming, much less AMD rigs. Just get a better cooler, an Evo 212+ is great and costs like 20-30$, compatible with pretty much any socket.

If memory serves, you can easily OC a FX6300 to 4.7 on air cooling.
 
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Shaun o

Shaun o

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Oct 7, 2007
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sadly turning off cpu core will not in fact increase the performance of single core work load.

More to do so with Fx based Amd cpu`s.

How you gain better single core cpu performance is all about how many IPC`s the single core can do.
IPC is Instructions Per Clock cycle 0r4ngenm4ul the more instructions executed in a single clock cycle the better the cpu is at single core processing.

Overclocking to an extent increases the frequency of a cpu so it can perform more instructions per second in s shorter amount of time.

But it depends on how the cpu it`s self is made and how it executes data.
That also determines it`s single core IPC rating.

Intel Cpu`s are far better at crunching through data because of the way the cpu is designed and how it executes the data it is given and why a Intel based cpu over an AMD FX cpu performs much better at single cpu core applications and tasks per cpu core.

With the new Rizen Cpu, you may of heard that the single core IPC is expected to be 40% more or faster for Amd`s new Cpu.

That is down to the new layout and architecture used in the design of the new Cpu to gain a higher overall IPC over the current FX based cpu`s on the market.

Since you cannot change the architecture of a cpu.
A cpu has to be redesigned in the way it executes and handhelds data in order for it to have a higher IPC.

From it`s data paths to, how much cache it has, and the stages used to process data at speed.


 
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Solution
amtseung

amtseung

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Jan 28, 2014
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With some pretty crazy water cooling and some refrigeration, I got my old (now dead) FX8320 to 5.2ghz on all cores at 1.66V. The performance gained was, pathetically, under 15% from stock 3.5ghz when running benchmarks that favor all 8 cores despite a 48.5% increase in clock speeds. Single core performance increase was basically within margin of error. Single core performance and clock speeds do not rise together. Everything gets bottlenecked at the cache anyway, so increasing the speeds of everything just makes the stupid thing bottleneck itself more and more.

You can get crazy clock speeds, and consume an equally crazy amount of power from the wall, for negligible gains for all practical uses of a computer.
 
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