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AMD Athlon X2 7750 BE OC Club - Page 110

post #1091 of 1165

I use a Zalman CNPS8000 cooler (air)
Temps. Idle 28-30c load 45-48c
Edited by Netkaos - 9/10/10 at 5:07pm
Hal
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Hal
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post #1092 of 1165
Quote:
Originally Posted by TheLastPriest View Post
Hmmm, I still strongly recommend against using software to OC, that being said, good luck, I hope yours OC's better than mine did. Thanks
i did it with bios settings ...on stock cooler...oc to 3.290 ghz at 1.412v stable 24/7....thats almost 600mhz oc per core i am happy ....there is still some headroom only thing i have to get a good cooler then i can bump with 1.450 v to reach 3.5 ghz....:-)
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post #1093 of 1165
Quote:
Originally Posted by brajesh143 View Post
i did it with bios settings ...on stock cooler...oc to 3.290 ghz at 1.412v stable 24/7....thats almost 600mhz oc per core i am happy ....there is still some headroom only thing i have to get a good cooler then i can bump with 1.450 v to reach 3.5 ghz....:-)
here are my stock scores with
athlon 7750@2.7ghz+ati 5770@
stock+2gb ddr2@800mhz
vantage default preset 9300 gpu
score 4000 cpu score
dirt2 all maxed out +max in game
AA with dx11 avg fps 40 min fps
35@1600*900 resolution
crysis very high settings+16AA@
1280*1024resolution@21fps avg
resident evil 5 all maxed with max
AA@1600*900@45fps
now with oc 7750@3.29ghz
+5770@925core+1400mememory
vantage default gpu score@10233 cpu score 5050
dirt2 -50fpsavg 40fps min
crysis-24fpsavg
resident evil5@64fps avg...:-)
at same previous settings
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post #1094 of 1165
Hey guys, new to the forums here.
I'm trying to hit the 225 FSB mark on my 7750 but it won't be primestable. Specs:

Kuma 7750
OCZ platinum xtc 800MHz 2gigs dual channel
ASUS MA785-M
Zalman 500W high end PSU
Win7 64bits
TT Contac29 CPU cooler

Memos are @ 4-4-5-12, so far i've found that they run stable at 225FSB (900 MHz) 2.1v (factory spec) by lowering the CPU multiplier to isolate them, so that shouldn't be the problem, also HT and NB are on spec (225 x 8 = 1800MHz) no overvolting. System is fully stable @ 220 FSB x 13,5 multiplier (2970MHz), but it will crash if i go to 225FSB, i already tried overvolting the cpu from 1.325 (spec) to 1.4v.
Do you guys think i should try raising voltage on cpu past 1.4? I think the problem relies there because system is stable at 225FSB (1800MHz NB/HT, 900MHz memo) when i force the cpu multiplier down.
ACC is on auto and CoolNQuiet is disabled.
Btw i'm trying to overclock through FSB and not multi so i can still take advantage of CnQ later on.

Thanks!
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post #1095 of 1165
Hi guys,

I was trying to get some more out of my aging 7750, put multiplier to 15 and voltage to 1.4v, now from reading here it seems 1.4 might be too high so I'm going to try lowering that and see how low I can take it.

I can't take the multiplier past 15x though, I think it may be that my mobo and ram are not good enough.

Details:
7750 BE @ 3.0 Ghz and 1.4v
Asus M2N-E (AM2 only)
Corsair DDR2 800 4x1GB
500w PSU

I think have all my memory slots full has a negative impact on my OCing, probably the M2N-E isn't really built for OCing? The thing is my CPU idles at 30C and doesn't even pass 40C under load at 1.4v. This is with a OCZ Vendetta CPU air cooler. So I think there's some room left to manuveur voltage. Oddly increasing voltage past 1.4v still doesn't make 15.5 stable.

Is my CPU just not capable or are my other components holding me back?

Another question, in all these screens I'm seeing HT links of 1800mhz, I only have 5x 200 so 1000 mhz, is this because I'm still using DDR2 800 ram and a AM2?
post #1096 of 1165
Quote:
Originally Posted by Litre View Post
Hi guys,

I was trying to get some more out of my aging 7750, put multiplier to 15 and voltage to 1.4v, now from reading here it seems 1.4 might be too high so I'm going to try lowering that and see how low I can take it.

I can't take the multiplier past 15x though, I think it may be that my mobo and ram are not good enough.

Details:
7750 BE @ 3.0 Ghz and 1.4v
Asus M2N-E (AM2 only)
Corsair DDR2 800 4x1GB
500w PSU

I think have all my memory slots full has a negative impact on my OCing, probably the M2N-E isn't really built for OCing? The thing is my CPU idles at 30C and doesn't even pass 40C under load at 1.4v. This is with a OCZ Vendetta CPU air cooler. So I think there's some room left to manuveur voltage. Oddly increasing voltage past 1.4v still doesn't make 15.5 stable.

Is my CPU just not capable or are my other components holding me back?

Another question, in all these screens I'm seeing HT links of 1800mhz, I only have 5x 200 so 1000 mhz, is this because I'm still using DDR2 800 ram and a AM2?
Board imo. I'm using DDR2 800 ram and have gotten great results. Your board is limited to the 1000mhz HT (aside from overclocking of course) so you won't get much more than that.
Edited by kidman2505 - 9/19/10 at 7:26am
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Megaman X8
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post #1097 of 1165
Ya turns out my board is limited to 1000mhz HT, but does that have an effect on my OCing and multiplier?
post #1098 of 1165
You kinda lose out on wiggle room when playing with the ratios since you don't have a full 1800 to play with.
Your board in general has a few things that can limit what you can get out of it however.
The components on it can affect how clean the power is, a chipset can affect how far or well you can overclock. With your power supply as well, the cleanliness of your juice can affect you with that as well.
I can't say I know if using a board holding back a HT affects your ability to overclock however in this case. I got up to 3.4 at 17x @1.5 on a board with 1000mhz HT though. You can find my post here..
http://www.overclock.net/amd-cpus/45...ml#post9883010
After changing boards however I did make it to 3.57 with little effort. While it ran the processor at full HT clock, I think the ability to get more out of the processor is more because of the chipset and having the wiggle room to play with.
I ended up grabbing a Gigabyte MA78LM-S2H http://www.newegg.com/Product/Produc...Tpk=ma78lm-s2h
that netted me the 3.57ghz . Fairly cheap but has decent features. I did however take off the northbridge heatsink, cleaned it off and put down some real thermal paste.
On that thought, you could try cooling your northbridge a bit for some more stability. I've always connected a small fan to the northbridge sink to squeeze out a bit of cooling there.
Good luck!
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Megaman X8
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post #1099 of 1165
Thanks, I'll give the northbridge some cooling and try again. But I'm also thinking it's time to be happy with 3.0Ghz and not try to push my cpu anymore.

A year ago I read that a stock cooler was fine at default clocking, so I never thought about it. Turns out that my cpu has been running +50C on load, 40C idle for who knows how long, a bit worried it'll fry before I get a new PC next year if I push it anymore.

Failing on Prime95 I'm concerned is a problem with my ram at 5-5-5-18 Corsair XMS2 4x1GB (I hear 4x1GB is really bad). I can't push the ram at all, even 202~203 bsods on prime95. I'm only OCing now cuz of FFXIV, and I can't dish out the cash for a new PC with snowboard season around the corner! heh.

But if I do fry it I guess I can skip the board and play FFXIV indoors all winter, yay! :S
post #1100 of 1165
You're right you may have a chip that's just not happy over 3ghz. You could try pulling out 2 sticks of memory just to see how it handles that as well, even if its just temporary.
If you can try relaxing your memory timings after searching around for others who have fiddled with the same memory you have. Overclocking after all involves a great deal of balancing.
Megaman X8
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Megaman X8
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Seagate 500gb Sata2,WD 300GB Sata2 LITE ON DvD Burner Win Xp,Win7 64bit Samsung Syncmaster 20" 
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