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OC the HT???? does it do anything? - Page 2

post #11 of 27
Quote:
Originally Posted by hks85 View Post
do a bench, set it back to 1Ghz and do another bench I DONT BELIEVE YOU!!!
lol. hey, i just stopped by to say hey. i think all these AMD guys are geniuses for being able to figure out how they work, so i take their word for the gospel. but that's just me. hope you don't break anything
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post #12 of 27
Thread Starter 
Quote:
Originally Posted by MrBungle View Post
lol. hey, i just stopped by to say hey. i think all these AMD guys are geniuses for being able to figure out how they work, so i take their word for the gospel. but that's just me. hope you don't break anything
haha

when i typed that last one i was joking but then i though "hmmm i wonder..." so i did and found some interesting findings...

1.3Ghz HT vs 1.0Ghz HT with everything else left unchanged. turns out that for 32KB and less, the processor actually speed up by 11.1% with the lower HT
for larger sizes where DIMM access was needed, it was up an an average of 8.5% on the 1000Mhz HT.

the testing was an average of 3 benches each using Sandra.
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post #13 of 27
I've found that ram OCs slightly better and with tighter subtimings with the higher HT. I routinely ran in the 1200-1400 with my old 939 set up. 1.5-2-2-0-1T @ DDR494. I lost 5MHz if I dropped the HT to 3x instead... so, do what works.

Anyone who claims that the high HT will 'damage' things has no idea what they are talking about. That's like saying that upping the FSB on an Intel will lead to damage.
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post #14 of 27
Thread Starter 
Quote:
Originally Posted by Ihatethedukes View Post
I've found that ram OCs slightly better and with tighter subtimings with the higher HT. I routinely ran in the 1200-1400 with my old 939 set up. 1.5-2-2-0-1T @ DDR494. I lost 5MHz if I dropped the HT to 3x instead... so, do what works.

Anyone who claims that the high HT will 'damage' things has no idea what they are talking about. That's like saying that upping the FSB on an Intel will lead to damage.
can you further explain what you mean? lost 5 MHZ in what? and as for the damaging, I have 4 voltages for my chip set so without raising those to a level too high I dont see how i could damage it...
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post #15 of 27
Basically my OC wasn't as stable. If I dropped my HTT multi to 3x instead of keeping it up at 4x, I had to back off my RAM speed by 5Mhz to stay stable (and consequently 45CPU MHz too on my 165) so the high HTT was the best option by far.
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post #16 of 27
The HT link has plenty of bandwidth for the CPU. Most people turn the multiplier to 3x when OCing, but for the RD580 Crossfire Xpress 3200 chipsets that may not be necessary, as they are sometimes stable at 1500MHz and above.
Yea I didn't even think about the timings. Probably a good idea to keep it whereit is, as long as it's stable.
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post #17 of 27
the HT is suppose to be lowered to x4 even x3 when overclocking. and your suppose to keep it round 1000mhz, but if it can go higher go right ahead, but the higher it is, the more unstable your overclock will be.
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post #18 of 27
Quote:
Originally Posted by hangemhi View Post
the HT is suppose to be lowered to x4 even x3 when overclocking. and your suppose to keep it round 1000mhz, but if it can go higher go right ahead, but the higher it is, the more unstable your overclock will be.
Uh, do you realize that you just contradicted yourself?
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post #19 of 27
I'll side with Ihatethedukes with this one, because he helped me in the past by telling me to up the HTT...with my old opteron, below 1000Mhz HTT wouldnt let me get 2.8, but when it was around 1200 mhz, i could get 2.8 stable...as long as it is stable, you should be fine
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post #20 of 27
Quote:
Originally Posted by Ihatethedukes View Post
Uh, do you realize that you just contradicted yourself?
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