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[OFFICIAL] FX-8320/FX-8350 Vishera Owners Club - Page 753

post #7521 of 67241
Quote:
Originally Posted by Clowerweb View Post

Ok, It was a mamber here named adroit... That's all I can remember. I didn't bookmark his results, so I can't find it frown.gif

He got to 5.0 GHz stable on the Hyper 212 Evo fan.

If the chip basically runs 4.2 GHz stock on the stock fan, I'll be pretty disappointed if all it can do it a measly 4.5-4.6 with once of the best fans out there... what's the point?

Theres no chance that someone got 5Ghz stable on a 212 evo. I have my 212 evo sitting in a box under my desk because of its poor performance when doing high overclocking. its heat threshold is rather low and it will skyrocket temps after 4.4-4.5Ghz on anything more than 1.38V.
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post #7522 of 67241
Quote:
Originally Posted by KyadCK View Post


You're way outdated if you think the number of ram sticks has an impact on anything outside of LN2 and a little extra heat.

That's mostly true. In my case, with 4 sticks my ud7 won't support the 1866 memory divider (although I could hit 1886 with 4 sticks with a ref oc and the 1600 divider). When I put two sticks in instead, the 1866 divider works fine.
post #7523 of 67241
Quote:
Originally Posted by Chrisoldinho View Post

I do have one question, in IBT when it did 10 passes on extreme it comes up with a message stating the system is stable, and the number it shows is something like -1.#IDBB#-11000, is this is normal?

Thanks,
Chris.

That is an undefined result. == unstable/fail.
post #7524 of 67241
Wow coming up on the 15 hr mark on prime using 95% of ram. Could it be I got my rig
Prime stable. Woow
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post #7525 of 67241
Quote:
Originally Posted by ChrisB17 View Post

Wow coming up on the 15 hr mark on prime using 95% of ram. Could it be I got my rig
Prime stable. Woow

well share the secrets
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post #7526 of 67241
Thread Starter 
Quote:
Originally Posted by sdlvx View Post

Quote:
Originally Posted by Clowerweb View Post

If it's stable @ 1.6v, it's not dead yet, but you could be pushing it. What frequency are you trying to run?

Just 5ghz stable in IBT with the AMD binaries and Prime95. Oddly enough, I saw IBT with AMD binaries cough up an error quicker than Prime95. I think it may be time to question the conventional wisdom in this thread about Prime95 and IBT. I used to reject Prime95 but after this and seeing this crazy ass oddities in performance I don't know.

I've never seen a chip derp out and lose massive performance like this while still saying it's at 5ghz.

I'm also starting to wonder if there's things you can do to invoke this massive performance degredation besides overvolting like this and overclocking. It felt like it was running half speed. Maybe part of why AMD FX blows so hard in SC2 and Shogun 2 has to do with the fact that the code there is invoking whatever I"m invoking and causing the chip to run in neutered mode even though it's telling you it's fine.

I'm gonna play with it some more tomorrow. If I do roast this chip I will just run it stock and put it in an mATX render node. I could definitely use it and I know someone else that needs a net render render node too. So it's not the end of the world if this one dies.

For science and bravery. I need sleep though. Hopefully someone chimes in and investigates this further that has a bunch of 8350s laying around. I really don't believe I've ever seen a chip do this before.

Or, ya know, because SC2 is a single-thread program and the Bulldozer design sucks at single threaded things...

You managed to remove your thermal cap, congrats, that's usually step one when overclocking.
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post #7527 of 67241
Quote:
Originally Posted by Clowerweb View Post

I kinda figured.. the memory isn't OC is it? I only ask because you said you thought it might be the memory.

Also, you should probably stress test it with everything under normal conditions (unless you are just checking vdroop, in which case you test with C'N'C off if you want to check the mobo's actual vdroop, as C'N'C adds a little more voltage drop), but the case should be under normal usage conditions with the side and everything on, fans at normal speed if they are adjustable.

What is your CPU cooling? The 8320 obviously can't reach 4.0 GHz+ as easily as the 8350 under normal conditions since it's a 500 MHz OC (whereas the 8350 is 4.0-4.2 GHz stock)...

The cooling is in my sig, its a 212 Hyper evo and no the memory isnt OC'd. (TBH im not even sure how to do that) It seems like everytime I solve a problem with this processor another one crops up. Can setting LLC to higher settings like 100% or 75% cause the freezing im seeing when stress testing with OCCT? I could try dropping it to 50% and see if the freezing stops and still keeps the vdroop away. Or could it be the memory, should I try running it at 1333 mhz maybe?
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post #7528 of 67241
Thread Starter 
Quote:
Originally Posted by Deadboy90 View Post

Quote:
Originally Posted by Clowerweb View Post

I kinda figured.. the memory isn't OC is it? I only ask because you said you thought it might be the memory.

Also, you should probably stress test it with everything under normal conditions (unless you are just checking vdroop, in which case you test with C'N'C off if you want to check the mobo's actual vdroop, as C'N'C adds a little more voltage drop), but the case should be under normal usage conditions with the side and everything on, fans at normal speed if they are adjustable.

What is your CPU cooling? The 8320 obviously can't reach 4.0 GHz+ as easily as the 8350 under normal conditions since it's a 500 MHz OC (whereas the 8350 is 4.0-4.2 GHz stock)...

The cooling is in my sig, its a 212 Hyper evo and no the memory isnt OC'd. (TBH im not even sure how to do that) It seems like everytime I solve a problem with this processor another one crops up. Can setting LLC to higher settings like 100% or 75% cause the freezing im seeing when stress testing with OCCT? I could try dropping it to 50% and see if the freezing stops and still keeps the vdroop away. Or could it be the memory, should I try running it at 1333 mhz maybe?

Well I can help with the RAM thing anyway. Here, read this.
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post #7529 of 67241
Quote:
Originally Posted by KyadCK View Post

"1.65v" for DDR3. Most people don't bother pushing beyond that anyway.
Thanks mate
post #7530 of 67241
I have just bought this CPU but I have a problem with it running hot.

My system temperature is 41C and my CPU will run up to 50C while I am gaming... I realise it can probably handle 50C but I have heard people say they get as cool as 16C while running idle... I am around 35C at idle..

I am looking at Dual Fan Air Coolers but the thing is I dont think there is space between the CPU and the Ram slots to fit a fan in

My motherboard is an Gigabyte 990FXA-UD3.

Currently I am running a CPU Air Cooler not dissimlar to a Zalman CNPS10X-Performa Cooler but if I try to take the fan off and place it on the other side (Between the cpu and the memory slots) it doesnt fit since the memory is in the way so I am bothered that I cannot buy a dual fan since it seems it wont fit?

I was looking at scan.co.uk under dual fan air cpu coolers.... can someone give me some advice as to if any of the fans on the following page will fit or which one I should get

http://www.scan.co.uk/shop/computer-hardware/all/coolers-air/multi-cpu-coolers-2-3-4-fans
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