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Your Radeon 7850 overclocking results? - Page 15

post #141 of 501
Pffff, after so long since my last post i've been trying to get 4ghz through BIOS and not AMD Overdrive, but at last without succes. Now i have done it to 3.8ghz, and it pass the first benchmark test:

http://www.3dmark.com/3dm11/5664547

My new specs:
1200/1300 and 3.8ghz Phenom II X4 555 BE

1150 at 1.16 is incredible, mine crashes if i went higher then 1120 with that voltage. To stabilize it i had to work with the memory (still don't know if my set up is at its best).

Im gonna open a new topic about how to get to 4ghz, because with my multiplier up to 20x, cb to 11x (2200) and voltage 1.525 and 1.225/1,25 i still can't pass a benchmark but its f-in fast in desktop. The difference between 3.8 and 4.0 is huge, larger then 3.6 to 3.8 to my feeling.

EDIT:
@YAWA
how are your temps and full load? with my current set up its around 59, with a handful spikes of 62*.

second edit:
ATM i have 19x multiplier with 11x cb and 1.49 volt (cpu, pretty high) and 1.225 cb volt.
Edited by Sankara - 1/22/13 at 6:42pm
post #142 of 501
You can't bios OC? I feel you'd have a lot more luck playing with a fsb OC as opposed to a multiplier through overdrive.

Yeah the card I got is magical. I'm hesitant to do much on the ram since there is no ram cooling on these Twin Frozr III coolers. However the coil whine is at times louder than my fan at 100 percent. I refuse to RMA it though as I'm convinced I hit the silicon lottery.

When I finish my build with my tax return next month I might try a new power supply to see if that fixes the problem. Good job though. Lemme know how the quest for 4 GHz goes.


*** with the card I'm getting 55C in heaven, but I imagine it has something to do with not playing with the ram too much, and less to do with the cooler. On my processor I'm at 3.8 GHz with 1.425 volts. I get 55C under full load on the cores. 4ghz on a phenom II is hard though. Very rare to get it stable without a lot of luck and a ton of fsb tinkering.
Edited by yawa - 1/22/13 at 6:55pm
post #143 of 501
Don't OC the memory much, just crank up the core voltage to max and see what you card can really do wink.gif increasing core voltage won't do anything to the memory chips.
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post #144 of 501
Also Sankara, North bridge on these chips can make a HUGE difference in snapiness and performance. Play with that in the bios and try to at least get 2400/2600mhz. I daresay you might notice a bigger difference with that than a 4 ghz OC. Be careful with temps and voltages though.
post #145 of 501
Huh interesting - this card is on sale right now on newegg for $219 I believe... I'm holding off so I can pick up the 7950 instead. Benchmarks are WAY better on this card and the 7850 doesn't really compete against the 660ti in benchmarks. thumb.gif
post #146 of 501
Here is Windows 8 x64 scores for my 24/7 overclock with 13.2 and 13.11.

13.2 Beta drivers:

P8012 (Graphics 7891, physics 8515, combined 8238)
http://www.3dmark.com/3dm11/5664818

13.11 Beta 11

P7936 (Graphics 7864, physics 8418, combined 7806)
http://www.3dmark.com/3dm11/5303905
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post #147 of 501
Just slept for a few hours (from Holland, its now 11 am). God OC'ing my cpu beyond its stable 3.6 is a pain in the a$$. Each time i think its stable, its not (after running prime95). Atm i just changed the fbs to 212 and multiplier to 18 to get 3.8ghz with stock voltage (everything else on auto) and now running prime95 ~ temps are around 54* according to speedfan.

Im gonna try and increase the nb soon and then tinker with the voltage. 2bad this wet dream is slowly turning in to a nightmare xd i feel sleepy frown.gif Also have to say am at the edge of just returning to 3.6ghz, but the practical increasement of 3.8 and 4ghz just felt so damn nice...my pc finally felt how i wanted it to feel when i first build it.

http://www.3dmark.com/3dm11/5667423
@3.8 pretty stable (ran primetime for around 1 hour)

^ What i get atm. Im also not planning on going beyond the 1200, for fear of killin my card.

I am going to try and up the multiplier on my cb though, see if it stays stable. Wish me luck smile.gif

@ Aestylis
You're cpu score is sick man, its even killin your gpu score xD for benchmarking it kinda means that the 7850 is to low for your cpu if im right (which is silly if you look at my score where my gpu is killin my cpu). I like youre score though. Still a 7870 OC'ed or even 7950 might have been better for your set up i think.

@executorchunk
The 660TI also cost 75% more then the 7850 in valuta. - EDIT - So for paying 120 euro's (75%!) less you still get a good card for a budget gamer smile.gif

Since 7850 for me is already an overkill, it would seem to be that the best card is depending on my factors like budget, build etc.

Still like Aestylis, with a good processor i think you are better off with the 7950/7970 if you can afford it.

Last edit:
http://www.3dmark.com/3dm11/5667720

Got my nb to 11x 212 i believe (around 2300 - 2400). Now gonna run prime95 for 2 hours to see if its stable.
Edited by Sankara - 1/23/13 at 6:08pm
post #148 of 501
So I upped mine to 1050 on the clocks and didnt touch the memory :
visiontek 7850

http://www.3dmark.com/3dm11/5687437

not sure if this is good.

Temps running about 64-65 C in unigine and 3dmark seems stable ran heaven twice and 3dmark twice no artifacts. Not sure what else to test on other than games.
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post #150 of 501
Quote:
Originally Posted by kagorus View Post

Heres Mine Stock Volts:
http://www.techpowerup.com/gpuz/fnk96/
Nice try, lol. It runs on 1.3v and it's my gpu validation thumb.gif
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