How does hypertransport speed effect 1055t performance?

[superccs]

I have a 1055T that I have with my FSB set to 242mhz at stock "auto" voltage netting ~3.4Ghz under normal conditions and ~4.0Ghz with turbo enabled.

Are there any drawbacks to boosting the hypertransport speed to 2.4Ghz and leaving the HT multiplier at 10x? I can't seem to find a reason why that would be bad, or is there a sweet spot? Oh and what clock determines the speed of the 6mb L3 cache?

If you have other related questions or comments about OC'ing this CPU feel free to please talk amongst yourselves 😛

Thank you.

System:
AMD 1055T + Arctic Freezer Pro
MSI 890GX
XMS3 1600
MSI 460 GTX
Win 7 64bit

 

[BD231]

When are you going to disable turbo and get *all* your cores to 4ghz rather than just three?

The HT bus actually degrades as you clock it upwards (it wasn't meant to run at higher clocks) so I'd leave it as close to 2000mhz as possible for maximum efficiency.

 

[DrMrLordX]

Unless you are using an IGP or an absolute ton of PCI-e devices and USB devices that are bandwidth-hungry, running your HT Link at a speed higher than the norm will not help you much, if at all. I've had HT Link speeds as high as 2.7 ghz and it doesn't really do a damn thing for me, so I doubt it would help your Thuban either.

 

[richierich1212]

yeah high HT Link doesn't really help at all. As long as it is near 2000MHz it's fine.

 

[superccs]

Thank you for the comments so far.

I have turbo enabled because it offers a multiplier boost on a locked cpu, which seems like a good thing when many apps are still single threaded and my core usage rarely is all 6 maxed.

OK so what about NB speed? Does increasing that actually provide any performance increases? and what clock determines the L3 cache speed?

 

[Sp12]

http://www.anandtech.com/show/3877/...investigation-of-thuban-performance-scaling/7

 

[Jovec]

http://forums.anandtech.com/showthread.php?t=2089390&highlight=

 

[busydude]

OK so what about NB speed? Does increasing that actually provide any performance increases? and what clock determines the L3 cache speed?

NB speeds increase will greatly improve single thread performance, not so much for multi threaded apps. With Thuban's you can easily reach NB speed of 3.0 Ghz.

Super Pi challenge thread.

Read the article Sp12 provided.

 

[heyheybooboo]

...

OK so what about NB speed? Does increasing that actually provide any performance increases? and what clock determines the L3 cache speed?

General Rule of Thumb: For each 10 percent increase in NB/IMC speed, memory bandwidth is increased 3-4 percent and latency is reduced 3-4 percent.

Provides a nice boost in memory-intensive apps and most gaming.

As far as the HT -- my understanding is as long as your HT speed exceeds the speed of your RAMs you are okee-dokee.




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