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AMD 7750/7850 B.E Club! - Page 38

post #371 of 587
Quote:
Originally Posted by bao28 View Post
mm cool, 13 x 254 is also my most stablest 3.3 GHz clock, but i never actually got it stable, kind of gave up now, spent 3 weeks finding a 3.3GHz clock, only 13 x 254 lasted 20 min OCCT

but then again u have a 750 SB and 790 board ~~

true that... its not bad of a MB for OCing
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post #372 of 587
Quote:
Originally Posted by tremmer View Post
forgot i have my vcore at 1.47 but it can be .25 lower
Quick question regarding how to change the CPU volts on the MA790X-UD4P
I have the board with a 7850 BE and the health status in bios shows cpu volts as being 1.31v and not 1.325v as everyone tells me is stock.
The M.I.T does not show the actual cpu volts but says Normal cpu core 1.325v
????
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post #373 of 587
So it got kind of cold here last night, and I wanted to see how cold I could get my chip. Was 48°F (9°C) last night, and I had the screen open on the door next to me, with a dual house fan aimed at the opening left by removing the front bezel on my case. I was also wearing shorts and a T-shirt...yeah, it was cold, and the air coming out of my case's exhaust was like ice.

Anyways, here are my exteme air cooling results:



I think it's awesome.
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post #374 of 587
Quote:
Originally Posted by Zeifer View Post
So it got kind of cold here last night, and I wanted to see how cold I could get my chip. Was 48°F (9°C) last night, and I had the screen open on the door next to me, with a dual house fan aimed at the opening left by removing the front bezel on my case. I was also wearing shorts and a T-shirt...yeah, it was cold, and the air coming out of my case's exhaust was like ice.

Anyways, here are my exteme air cooling results:

I think it's awesome.
wow crazy temps, lol

I GOT 3.3GHz 1 HOUR OCCT STABLE! Who says 780G can't clock! Now i think i can probably get higher

EDIT: And some tips overclocking the 7750 (on 780G?), DO NOT CHANGE NB FREQUENCY, I did 2 tests to get this 1 hour OCCT, my first one, NB Frequency @ 8x, HT LINK @ 6x, crashed in about 12 minute OCCT, however next time, I increased NB Frequency to 9x, so its running @ like 2.2GHz? and was able to get a 1 hour OCCT stable

3.31? lol wanted 3.3 but 245 x 13.5 is closest to 3.0 (or 244 x 13.5 = 3.294 lol)

settings are

HTLINK = 1200 so 6 x 245
NB FREQUENCY = x9 so 9 x 245 = ????
CPU FREQUENCY = 13.5 x 245 = 3307

CPU VOLT = 1.475
NB VID = +0.075 = 1.4V
NB CORE = +0.2V = 1.3V

edit2: and validation http://valid.canardpc.com/show_oc.php?id=575620

Temperatures topped @ 32*C, however NB reached a unpleasant 56* in the hour.

Will do some more stability testing next week after i finish this month's quota off, lol

edit: failed, it might be the ram failing me, crappp, i was unable to do normal tasks on my overclock

but @ my 3.2GHz i ran a 3DMARK06 benchmark got 11978


Edited by bao28 - 5/30/09 at 1:27am
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post #375 of 587
Okay so at this very moment I'm playing SWG and my CPU is at like 50% load. Something doesn't seem right.

My CPU is freaking cold for being under load, and it's not cold in this room.

I also see a new voltage, and SpeedFan says it's my Vcore2.

And why is my +5V so low?


Update: I dunno what the deal was, but my temps wouldn't change, even when I stopped my CPU fan for a moment. I rebooted and it was about 10 degrees higher. So, whatever, I guess.
Edited by Zeifer - 5/29/09 at 10:47pm
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post #376 of 587
Quote:
Originally Posted by bao28 View Post
7750's are pretty bad when it comes to multi-tasking, infact, its horrific, horrific... its so **** i feel like changing back to my x2 4000+, which i probably will soon, OC it to mayb a 3.2, i could get supposedly stable 3 on that but my temperatures didn't hold before as i had no cpu cooler.

honestly, 7750 can't multi-task AT ALL, it FREEZES ***? (screen freeze, mouse still moving) Im copying something, and my music in WMP would stop playing, or copy something even scrolling down a web page freezes hopeless.

on the plus side, i load dota @ the same speed as a E8400 @ stock or a Q6600 @ 3.6, i suppose this is the cost to perform the same as $240+ (AUD) chips for a $80 chip. And if it does one task, i can say it is fast.

no wonder why they can compare this chip to a icore without being completely off the charts, no matter what you do it uses both cores to do one thing -.-'

Or is this only happenign to me? pathetic multi-tasking 7750? happens even on stock speeds here. After finals ill probably get my x2 4000 to overclock again and benchmark 7750 vs 4000 lol

Back to overclocking,
There is either something wrong with my 7750 or *** I can't produce the same results on unstable overclocks, for example
236 x 14 | 1400 x 7 | 1.45V | NB 1.3V | NB VID 1.275V (-0.5) ~ 20+ minutes OCCT Stable, after trying a few other overclocks, i come back to this, it doesnt even boot, *****, and then let it fail once or twice, then it boots in, does like a 10+ minute OCCT stable and bsod's or maybe 1-2 minutes.
Im a newbie. I got the same problem here. It hangs INconsistently, i could not determine what causes the hang ups and still does not know the solution for this. I havn't reinstalled the OS having 5000+ as my old processor and MSI am2 to MSI am2+. need your help...
post #377 of 587
Quote:
Originally Posted by badog View Post
Im a newbie. I got the same problem here. It hangs INconsistently, i could not determine what causes the hang ups and still does not know the solution for this. I havn't reinstalled the OS having 5000+ as my old processor and MSI am2 to MSI am2+. need your help...
hangs? if it hangs, that means its unstable if you have overclocked

elsewise if it hangs, could be other hardware having problem

or you over clocked too much and ur hdd gone crazy cuz it bsod too much, lol

anything can be the problem.

mine never HANGED, but screen stops for like a few seconds then works again.

EDIT: 3.3 GHz 1 HOUR OCCT STABLE AGAIN
feels more stable this time

http://valid.canardpc.com/show_oc.php?id=577263
Edited by bao28 - 5/31/09 at 9:57am
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post #378 of 587
AMD 7750+ BE dont like raising of motherboard frenquency....you should play only with voltages and multipliers of CPU....I have 3200 mhz on 1.360 running stable 1 hour and 14 minutes and he keep going.i will leave him under Orthos over 4 hours.

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post #379 of 587
Windows Vista 32...


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post #380 of 587
Quote:
Originally Posted by SnakePriest View Post
AMD 7750+ BE dont like raising of motherboard frenquency....you should play only with voltages and multipliers of CPU....I have 3200 mhz on 1.360 running stable 1 hour and 14 minutes and he keep going.i will leave him under Orthos over 4 hours.
hah, well it really depends on ur board x cpu combination.

its sad but i cant seem to change frequency at all too. >.>

Quote:
Originally Posted by HondaGuy View Post
Windows Vista 32...

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fk ur lucky, i can't run mine on a multiplier even touching 17, lol.

then again im on a 780 and my board has some voltage **** which makes it retarded when i touch voltage, zzzz, NB VID inclusive, goes so retarded, lol
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