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7750 Black Edition - Page 2

post #11 of 41
come on at least bring up the multiplier a notch or 2.... it will handle it.
    
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post #12 of 41
Hmm - just re-read some AM2+ OC'ing info, and learned that the "reference clock" that I maxed at 273 doesn't really mean anything like FSB, so working to that max is not right. I'm going to redo my settings and report back.
post #13 of 41
Try cranking the Voltage to 1.55, and 15x @ 234, put your RAM at 800 speed, it will be OC to 3510 with the ram at 878..

@DDR800
15.0x 234 = 3510 w/ ram @ 878
14.5x 242 = 3509 w/ ram @ 877
14.0x 250 = 3500 w/ ram @ 1000 if your ram is 1.8v you may beable to take it to 1.9-2.0
13.5x 260 = 3510 w/ ram @ 1003
13.0x 270 = 3510 w/ ram @ 1003

@DDR533
15.0x 234 = 3510 w/ ram @ 585
14.5x 242 = 3509 w/ ram @ 638
14.0x 250 = 3500 w/ ram @ 636
13.5x 260 = 3510 w/ ram @ 638
13.0x 270 = 3510 w/ ram @ 702


Best of Luck. or just follow the guide.. and don't use auto voltage
Edited by SentrySkills - 12/26/08 at 12:05am
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post #14 of 41
No joy - Orthos won't run for more than a minute over 3.1Ghz.

The eVGA 730a board seems to be the issue - I hope the update the BIOS, or someone works out how the CPU voltage actually matches to the board settings.
post #15 of 41
Thread Starter 
Quote:
Originally Posted by autoxerke View Post
Hmm - just re-read some AM2+ OC'ing info, and learned that the "reference clock" that I maxed at 273 doesn't really mean anything like FSB, so working to that max is not right. I'm going to redo my settings and report back.
autoxerke.... welcome to OCN!

I would think you'd be able to hit a ref. clock of 320 pretty easily.... my 730a has with a 5000 BE (320 x 10).... I didn't try to push the ref. clock much further though.

Also, I had contacted EVGA tech support to see about any upcoming BIOS updates, but no word on that yet.
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post #16 of 41
Quote:
Originally Posted by winginit View Post
autoxerke.... welcome to OCN!

I would think you'd be able to hit a ref. clock of 320 pretty easily.... my 730a has with a 5000 BE (320 x 10).... I didn't try to push the ref. clock much further though.

Also, I had contacted EVGA tech support to see about any upcoming BIOS updates, but no word on that yet.
Thanks!

Was your OC at stock NB/HT voltages? I'm reluctant to push things if the listed voltages aren't accurate. Could it also be a diff in the Phenom architecture?
post #17 of 41
Quote:
Originally Posted by SentrySkills View Post
.. and don't use auto voltage
why not?
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post #18 of 41
Thread Starter 
Quote:
Originally Posted by autoxerke View Post
Thanks!

Was your OC at stock NB/HT voltages? I'm reluctant to push things if the listed voltages aren't accurate. Could it also be a diff in the Phenom architecture?
Yeah, for that OC, chipset and HT voltages were both left on auto, and vcore was set to 1.35v in the BIOS. So far, with the 7750, I've left the voltages on auto except for setting the ram voltage to 1.9V.

I'm trying to find out more about the monitoring issue.... I fired off another message to tech support to let them know that CPU-Z was reading CPU voltages incorrectly.... and I also asked for clarification on the hex number values in the BIOS for CPU VID, CPU FID, CPU-NB VID and CPU-NB FID. Those settings only show up when running a Phenom.... I'll post back when I get a response.
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post #19 of 41
I was able to get at least the CPU and HT mult hex numbers from this article:
http://www.ocia.net/articles/k10overclock/page2.shtml
post #20 of 41
Keeping an eye on this thread
To see if this chip can oc like the
E7200 did on it's first batch 3.8GHz to 4.0GHz Stable
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