HTT vs CPU speed

[Finns14]

Trying to learn a little more about over clocking before I really get into it but I would really like to know more about htt vs cpu when it comes to performance. I am mostly a gamer and I know its my processor that is bottle necking me during gaming so if I would like to lessen that bottle neck which would I focus on?

 

[BlueWeasel]

See if this helps: A64 Guide @ EOC

 

[keeleysam]

Keep it at atleast 800, no more than 1100, and preferably around 1000

 

[Finns14]

Originally posted by: keeleysam
Keep it at atleast 800, no more than 1100, and preferably around 1000

Huh?

 

[BlueWeasel]

Originally posted by: Finns14

Originally posted by: keeleysam
Keep it at atleast 800, no more than 1100, and preferably around 1000

Huh?

The HTT speed is a function of your FSB speed and a multiplier set in the BIOS....

HTT = FSB x HTT multiplier (HTT multiplier and CPU multiplier completely indepedent)

Using that formula, you want to keep in in the range of 800-1000, and there's no real benefit for using a higher HTT speed.

For example, my FSB on my Sempron is 309. In order to keep the board stable, I have to drop the HTT multiplier down to 3x (3x309=927HTT). Using 4x would mean a HTT speed of 1236Mhz, and it's likely most boards couldn't handle a HTT this high.

 

[zephyrprime]

Originally posted by: BlueWeaselThe HTT speed is a function of your FSB speed and a multiplier set in the BIOS....

HTT = FSB x HTT multiplier (HTT multiplier and CPU multiplier completely indepedent)

Using that formula, you want to keep in in the range of 800-1000, and there's no real benefit for using a higher HTT speed.

For example, my FSB on my Sempron is 309. In order to keep the board stable, I have to drop the HTT multiplier down to 3x (3x309=927HTT). Using 4x would mean a HTT speed of 1236Mhz, and it's likely most boards couldn't handle a HTT this high.

That's a really high fsb. Can I ask you what your clock speed is? And does having HTT < 800 produce an unstable system?

 

[BlueWeasel]

With my Sempron 3100+, the current clock speed is 8x309=2472. This is on an Epox 8KDA-I3 NF3 250 board and I've actually been able to got as high as 320 FSB stable. The Sempron can actually go as high as 2.6Ghz, but this board seems to overvolt a good bit, so 2.5Ghz seems to be the sweet spot with a reasonable bump in voltage.

Generally, having a HTT less than 800 won't affect stability at all, but ~800 maxes out the bandwidth. Anything higher doesn't really help performance, and less than 800 means you're not taking advantage of the full bandwidth.