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AMD 7750/7850 B.E Club! - Page 41

post #401 of 587
Hey guys, Im in!
Tiny Iron
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Tiny Iron
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post #402 of 587
Quote:
Originally Posted by alwaysAMD View Post
Zeifer, something like this would be great for your case and your 9700. I had the same problem with my old coolermaster case & 9500, and this solved it.
One can also rig up something with a little creativing and wise choices of materials from the hardwar store... like some wire screen, some foam prefiltring materials, and maybe some light cardboard.
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Homemade
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post #403 of 587
Update from my testing.

Have things set to auto across the board mostly.

7750 x15 @ 200 has always been stable and cool (3.0 mhz)
x15.5 @ 200 has been stable but hot. (3.1 mhz)
increasing FSB above 200 I can only go maybe 203 to 204 without experiencing stability problems or heat problems.

I did bump vCore up +0.038 above default. seems to help. above this and I experience heat problems.

Now.. recently...

I fixed a reinstall problem and in that for some reason decided to do a MoBo driver undate from MoBo manufacturer... plus I decided to Flash Bios to most current.

I immediately noticed a decreas in temps. So.. I'm now testing x16@200, and it appears stable for now. (3.2 mhz) We'll see how long use and stressing goes.

... And... it didnt work

Updating Bios and Firmware did not help my O/C. Although my sound has improved.
3.2 is still unstable.
3.1 destabilized over long term stress.
3.0 is still running ok.


A reminder to new peeps

effective processing speed, as in useable speed between CPU, Mobo, and RAM works different on these newer chips than older ones. These chips control RAM directly, and not through MoBo. So... increasing FSB or CPU speed does not impact RAM speed like it did with older chip designs. Because the 7750 family can control RAM at 1066 mhz.

So... first thing is get your system set up with 1066 RAM and proper settings from your RAM manufacturer... most of your effective useable processing speed will come from this... and only after this should we worry about OCing the CPU. However. a 7750 that is default 2.7 mhrz... OC'd to 3.0 or greater... usually easy to hit 3.2 is definitely worth doing.

Just remember that these new Chips controls the RAM directly rather than the Mobo controling the RAM like in previous chip-board designs.
Edited by Mithral - 9/16/09 at 2:23pm
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post #404 of 587
Update... still running CPU at 200 x 15 @ 3.0Mhz. Air cooled.

Goofing with the Vcore temps. Noticed on my Mobo that leaving Vcore temp and default seems just as stable as increast to the suggested 1.4v point, but with noticeably less heat.

Heat Evidence suggests that my Mobo is very sensitive to Vcore temp increases, and I'm better off at this point leaving Vcore at default and not pusing OC past 3.0. So maybe I need to look for a better air cooler see if I can get a good deal on one.
Edited by Mithral - 9/28/09 at 9:19pm
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Homemade
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post #405 of 587
Wow. I found out why my PC was overheating and shutting down. PSU was spitting out hot air...I had way too many case fans, which was drawing too many amps from my PSU, which in turn caused the CPU to get stressed, and temps went way, way up. I might be able to overclock to 3.3GHz.

Hasn't gone higher than 42C, and I've been gaming for like 6 hours straight, stock clocks. Gonna try OCing soon.
Edited by Zeifer - 9/27/09 at 2:36pm
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post #406 of 587
Quote:
Originally Posted by Zeifer View Post
...I had way too many case fans, which was drawing too many amps from my PSU, which in turn caused the CPU to get stressed, and temps went way, way up. I might be able to overclock to 3.3GHz.
.
How many case fans do you have now?

I have one 120m in front and one 120mm in back. Plus two 80mm in the side. My PSU should handle this no problem.. but curious how I should go about evaluating my Amps.
Homemade
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post #407 of 587
whats better ocing out of bios or useing the amd utility to clock it
Be
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Be
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post #408 of 587
Quote:
Originally Posted by shurik06_83 View Post
whats better ocing out of bios or useing the amd utility to clock it
BIOS. Never use a software utility
Cavi's Cube
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post #409 of 587
v core 1.4 multiplier x15.0 and i am posting 3.0ghz solid as a rock
only problem i have no idea what temp to belive in core temp and everest and hwmonitor i am geting mid teens with oc, like 15idel 18load in asus utulity and bios i am geting 32 idel and 36 load

any ideas should i go out and drop $ 50 on a good temp probe bay display deal or am i all good

i know the chip has more but i dont want to cook it and ihave no idea what temp to go by
Be
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Be
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post #410 of 587
how far past 200 can i take my fsb before things start geting screwy
pc6400 patriot ram asus board with 780 amd chipset
Be
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Be
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