FSB or Multiplier Overclock?

[Minty649]

The title says it really. I am a complete noob when it comes to overclocking. I tried to overclock my FX 8350 the other day, i got it to 4.4ghz on the stock voltage by changing the FSB. It survived prime95 for half an hour but it crashes in game. So will a multiplier overclock be any different?. I suspect the crash is due to the CPU/NB frequency" and "HT Link" values.

 

Specs

 

mobo: Asus sabertooth 990fx r2.0

GPU: Asus R9 280x

CPU: FX 8350

PSU: EVGA Supernova G2 750w (Gold)

HDD: WD 1TB

Case: NZXT Switch 810

RAM: crucial tactical tracer 2x4gb, 1600

Cooler: Noctua NH-D15

 

Thanks

[Fate]

Multiplier. 

It's much more simple and only affects the CPU clock speed. 

[Minty649]

Multiplier. 

It's much more simple and only affects the CPU clock speed. 

Okay i will give multiplier a go. I heard the FSB gave you better performance in each core.

[Fate]

Okay i will give multiplier a go. I heard the FSB gave you better performance in each core.

I'm pretty sure that's just a myth, I've never seen any proof of that. 

[Minty649]

I'm pretty sure that's just a myth, I've never seen any proof of that. 

Okay thanks. Have you any idea why my overclock would be okay in a stress test but not in game. I played arma 3 for ages on it, but then went to play battlefield and it crashes

[OCing Noob]

Okay i will give multiplier a go. I heard the FSB gave you better performance in each core.

 

FSB over 102.0 actually put your system in a psycho State when it will do insane things .lol . you better not mess with FSB.

[Fate]

Okay thanks. Have you any idea why my overclock would be okay in a stress test but not in game. I played arma 3 for ages on it, but then went to play battlefield and it crashes

I'm not really sure why that happens, but it means it's not a stable overclock. It happens to a lot of people.

 

 

 

FSB over 102.0 actually put your system in a psycho State when it will do insane things .lol . you better not mess with FSB.

 

Not for AMD/older Intel platforms.

[Minty649]

Okay thanks i will give multiplier a go

[OCing Noob]

I'm not really sure why that happens, but it means it's not a stable overclock. It happens to a lot of people.

 

 

 

 

Not for AMD/older Intel platforms.

I only know about intel and specifically DC CPUs and 1150 socket  

[Minty649]

Multiplier. 

It's much more simple and only affects the CPU clock speed. 

Just used the multiplier and now stress testing. All good so far! Using multiplier adds alot more heat then FSB

[ThomasD]

I think the ultimate answer is not that straightforward.  Much depends on what you are individually attempting to accomplish and how much you are willing to do to get there.

 

Right now I'm playing around with a new rig - a 4790 on a Hero, with a GTX 970, and this is all very preliminary, but I'll share anyway.

 

I can get stable (1 hr AIDA64) overclocks at both 100 BCLK 46 multiplier and 102 BCLK 45 multiplier with similar, but slightly lower, voltage on the 102 BCLK.   These are very conservative settings - voltages in the 1.20 - 1.24 range, and average temps below 60 on all cores (H110).

 

Overall they yield similar processor speed, but the 102 BCLK setting gives better benchmarks in AIDA64.  The numbers aren't huge, but they are consistent across memory, CPU and FPU. 

 

Which is sort of not surprising since BCLK does boost everything.  I wanted to compare them on Heaven but ran out of time yesterday.

 

Now, this is a gaming rig I built for the kids, so my ultimate goals are best frame rate, at a conservative overclock to ensure  maximum longevity.  I'll probably get the most benefit from OCing the GPU, but I want to establish a set of known CPU profiles to work from before I move on to the graphics card, and I may find that having that FSB tweak creates more headaches than it is ultimately worth.  

 

But maybe not, for me the final answer to the question will be less about clock and more about FPS.

[Priller]

Okay i will give multiplier a go. I heard the FSB gave you better performance in each core.

 

I disproved that long ago in the Cinebench thread.

 

The best way is to start with multi and voltage and get to know how the cpu will react. After that start playing with the FSB as you will typically find a combination may yield better performance.

 

Also, some like FSB more then multi and vise versa. 

[Minty649]

I disproved that long ago in the Cinebench thread.

 

The best way is to start with multi and voltage and get to know how the cpu will react. After that start playing with the FSB as you will typically find a combination may yield better performance.

 

Also, some like FSB more then multi and vise versa. 

okay, atm i used the multiplier to get 4.4ghz stable, no issues! so i am just going to leave it at that. Although, i have one more question, my cpu keeps jumping between 1.5ghz and 4.1ghz and i dont no why? Its not throttling because of temperatures cause they are quite low. I think its doing it during gaming aswell

[Priller]

okay, atm i used the multiplier to get 4.4ghz stable, no issues! so i am just going to leave it at that. Although, i have one more question, my cpu keeps jumping between 1.5ghz and 4.1ghz and i dont no why? Its not throttling because of temperatures cause they are quite low. I think its doing it during gaming aswell

 

That is the CPU going to idle. You should see the voltage drop at the same time. If you were under load and saw it hit into the low 3Ghz range then that would be throttling.

[Minty649]

That is the CPU going to idle. You should see the voltage drop at the same time. If you were under load and saw it hit into the low 3Ghz range then that would be throttling.

ahhh right, i was just wondering cause i was in game and then i came out to check it and it was still doing it. I was expecting it to go back up to 4.4 while gaming

[Priller]

ahhh right, i was just wondering cause i was in game and then i came out to check it and it was still doing it. I was expecting it to go back up to 4.4 while gaming

 

It will usually shift priority if you come out of the game. It should be at 4.4 while gaming unless it's not loaded enough.

[DildorTheDecent]

The AMD base clock is a different speed compared to the Intel base clock.

[Minty649]

It will usually shift priority if you come out of the game. It should be at 4.4 while gaming unless it's not loaded enough.

okay thanks