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Old March 28, 2007, 09:43 PM
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If it's stable, you're doing pretty good.

You've already got a 25% OC and if your temps are below 50 at these settings you've probably got some headroom if you get some better cooling.
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Old March 29, 2007, 08:35 AM
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Overnight test with prime 95 no errors no warnings, idle temp 35 c ,fan now at 100% was only at half before using speedfan. So I guess try the t2 stting next right ? What I'm not clear on is why when I've lowered ram to ddr333 whys the frequency @ 208
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Old March 29, 2007, 08:56 AM
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Your mem is @ 208 now because it is tied to the HTT. As you raise HTT your mem freq also rises. It starts at ddr333 (166) speeds when htt is stock (200) and goes up from there. (This is why we need to use dividers on the A64s).

What was your load temp while prime95 is running?
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Old March 29, 2007, 09:16 AM
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Quote:
Originally Posted by sswilson View Post
Your mem is @ 208 now because it is tied to the HTT. As you raise HTT your mem freq also rises. It starts at ddr333 (166) speeds when htt is stock (200) and goes up from there. (This is why we need to use dividers on the A64s).

What was your load temp while prime95 is running?
HTT thats what some mistakenly call FSB ? Load temps 45-48 fan at full speed.Thanks man now I'm clear on what the mem divider does.
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Old March 29, 2007, 12:06 PM
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Quote:
HTT thats what some mistakenly call FSB
Yep.

It's up to you now what you want to do.

If it were my system with those temps, I'd hold off until I got some better cooling, but you could try dropping the mem divider and bumping the HTT by another 5 to see what your temps are like under load @ 2550. (the HT multiplier might be OK @ 4X255, or you might have to drop it to 3).

Other than possibly loosening the memory timings, do you think you're getting the hang of how to OC an A64?

Once you've got it, it's pretty simple. :)
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Old March 29, 2007, 12:37 PM
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Quote:
Originally Posted by sswilson View Post
do you think you're getting the hang of how to OC an A64?
I think so,a lot more than I did before thanks to you guys.I'll likely have more questions but will work on this info for now.You've all been a big help thanks much.
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Old March 29, 2007, 01:35 PM
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Nice job Jim Your doin a lot better than I did on my first OC. lol. Correct me if I'm wrong Wilson but is it true that sometimes with some boards you can get a higher oc (not always) by using a lower multiplier. Like when you've hit the wall with a certain multiplier occasionally some boards and chips will go a little farther using a lower multiplier. Hope this makes sense lol . But like Wilson Jim said watch your temps, a high overclock is useless if your burning up your chip.
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Old March 29, 2007, 03:24 PM
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Quote:
Originally Posted by cdn_Madrach View Post
Nice job Jim Your doin a lot better than I did on my first OC. lol. Correct me if I'm wrong Wilson but is it true that sometimes with some boards you can get a higher oc (not always) by using a lower multiplier. Like when you've hit the wall with a certain multiplier occasionally some boards and chips will go a little farther using a lower multiplier. Hope this makes sense lol . But like Wilson Jim said watch your temps, a high overclock is useless if your burning up your chip.
Yep, that is often the case, but fine adjustment of memory freq also comes into play when we look at different multipliers.

I found two different "sweet spots" for my board......

One runs 275X11=3025 mem divider 180 = mem freq 252

The other runs 305X10=3050 mem divider 166 = mem freq 254

The X11 settings will post close to 3060, but if I keep the same mem divider, the HTT of 278 pushes my mem beyond what it's stable at.

Using the lower mem divider @ 10X means that the mem freq goes up by a smaller percentage of HTT increases so it stays at a level it is stable at.

(Does this make sense or should I pump out some #s from a mem freq calc?)
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Old March 29, 2007, 03:44 PM
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Lol.... no calculator needed. Thanks for the info. Just wanted to make sure I thinking the right way.
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  #50 (permalink)  
Old April 6, 2007, 08:36 AM
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Default My best OC on my FX60 so far.

Not great but apparently the Fx60's are not fond of 3ghz:(. But I will keep trying
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PS: How does it look so far Wilson?
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Last edited by cdn_Madrach; April 6, 2007 at 08:37 AM. Reason: Forgot the PS:)
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