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CACJE 0546 a good stepping?

had a play about overclocking mine this morning. finally figured out why my MB wasnt letting me overclock, lol

so far it's battlefield 2 stable at 2.7ghz - havent run any proper tests on it yet ;)

my old twinmos 3200 ram was fine 1:1 up to 240 FSB, had to run a divider to get to 2.7ghz - booted into windows at 2.8ghz but battlefield crashed after about 10 mins so dropped the speed.

will run some proper tests on it this weekend :)
 
Assimilator1 said:
Where did you go? ;)
2.86GHz is good for starters:)
Click to expand...
Heh, sorry mate, lost track of things. I had a bit of a test, but I think the ram is a major limiting factor (2x 512 kingston value pc3200 :( , gettin somethin better soon). Results:

255x11 @ 1.45, 5/6 divider
260x11 @ 1.475
265x11 @ 1.525 <- worked for a bit, later couldnt get prime stable :confused:
270x11 wasnt prime stable at all, tried up to 1.59V at various dividers

All using 5/6 dividers, tried various dividers at higher speeds, but 5/6 seems optimum. Decided that 260x11 is a fair trade between speed and volts, currently priming at that to make sure. Max temp seems to be about 35-36 with the max heat prime mode. As soon as I've got some better ram though...

To put it into perspective, superpi 1M times were respectively
31.031
30.300
30.219
29.547

Questions or comments welcome
 
Damn, as soon as I post that I get a bsod (something paged area something), oh well. Needs more volts probably, 1.5 i guess :mad:

Dropped back down to 155x11=2805mhz @ 1.45, (1.424 in cpu-z) 5/6 divider
 
Assimilator1 said:
Why haven't you tried a bigger RAM divider?
If you can o/c the cpu higher it might more than make up for the slower RAM speed.
Click to expand...
Soz, didnt make that clear (ive got lots of notes, couldnt type em all)

[email protected]:
was stablish with a 1/2 divider (not fully prime stable, but no bsod yey)
with 5/6 or 3/4 not stable at all.

270x11
@1.55 not stable with any dividers
@1.5872 (1.55 +2.4%) not stable at 5/6, could try something lower I guess.

Is it worth trying the higher speeds at really low dividers then you reckon?
 
Damn got another bsod at 255 when I was priming and doin some other stuff at the same time. Maybe needs more volts for 2.8ghz
I'm gonna leave it at this anyway, since games are all fine. Need ram, need ram...
 
my one does 11x252 at 1.4v (1.375v in bios settings)

having push any further as my mobo is locked at 274 FSB so i don't think it will be a real increase in performance with HHT at only 3x274 (or maybe I am wrong???)

finally crashed playing B2 at 274x10. Try 265x10 but fail prime95.

so back now to 255x10 prime stable with 1.4v (overvolts a little bit)

I will have another go when I install the FX55 official amd heatpipes heatsink I have bought.
 
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It wouldn't be an increase over what?

Joey
Purely for testing purposes you want to underclock your RAM & HTT ,then ramp the FSB until you've found your max CPU clock ,then lower the CPU multi & see what the RAM can go upto.
Actually before either of those tests you could also find out your max FSB by underclocking your RAM & CPU.
Anyway ,once you've found your max CPU you can decide on the optimium setup:)
 
Assimilator1
Thanks for the tips. Sounds like doing it properly is a good idea. If you know the limits you can work around them instead of trying to work out the limiting factor, I guess. Sounds like a fun project for this weekend!
 
Assimilator1 said:
It wouldn't be an increase over what?

Joey
Purely for testing purposes you want to underclock your RAM & HTT ,then ramp the FSB until you've found your max CPU clock ,then lower the CPU multi & see what the RAM can go upto.
Actually before either of those tests you could also find out your max FSB by underclocking your RAM & CPU.
Anyway ,once you've found your max CPU you can decide on the optimium setup:)
Click to expand...

The maximun FSB is 274 (limit of the asrock official bios) and the chip is stable at 10x274 with 1.4v and HTT 3x mobo settings (speedfan reports 1.44v and 50C with stock heatsink when priming).
 
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Max overclock: 263x11 @1.55 5/6 divider

Vcore reads 1.536 in cpu-z. Long S&M stable, couple of hours prime stable on blend.

This is the max vcore without messing with +xx% values. 264 wasnt stable. I'll continue priming just in case. Does this seem like an ok vcore for 24/7 use?

I assume the bsods before were simply too few volts.
 
Assimilator1 said:
Hmm ,not sure ,I'd say that's right at the top end for being acceptable on air cooling.
What load temps are you getting?
Click to expand...
Swiftech apex watercooled. MBM high is 42 degrees.

I've heard 1.6 for water, or 10% over on air (little bit more for water) so I'm happy with it. Where does cpu-z get readings from, it reckons 1.536?

Thoroughly stable at 2.9ghz, woo.
 
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