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[OFFICIAL] FX-8320/FX-8350 Vishera Owners Club - Page 3258

post #32571 of 67492
Doing a little more tinkering with turbo with fixed offset voltages of just one step above stock with Ultra High LLC, and it runs cooler and with more stable clock speeds. I'm Priming 245 base right now with multipliers of 17.5, 18.5, and 19. Running four threads it's almost rock solid at 4.55GHz, but it has throttled one core below the 4.3GHz minimum clock I defined, so I'm not sure I'd call it a success. It'd be a great way to get some free speed in lightly threaded apps if it didn't throttle below the lowest multiplier like that.

My guess is that APM features some sort of overall power throttle. I tried disabling it again and the lowest clock (4.3GHz) stayed in effect, but it didn't throttle below that. Turbo didn't work anymore, but the point was to see if the throttling would stop, and it did. With it on, eight threads of small or large FFTs would throttle below 4.3 regularly.

It's a pity that they hamstrung turbo by design like that. It'd be an awesome way to scale an overclock dynamically. I might still use it for gaming since that doesn't really hammer the CPU anywhere near Prime95 level, but that's the limit to its usefulness. Even then it's unreliable at best.

EDIT: Forgot to mention that the throttling with APM on wasn't due to temps brought on by the higher turbo clocks - the instant I turned on eight threads of large or small FFTs it dropped to 4.3 and started throttling below that on random cores. Nothing had time to warm up.
Edited by Nisrock7863 - 3/28/14 at 7:52pm
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post #32572 of 67492
Quote:
Originally Posted by Nisrock7863 View Post

Doing a little more tinkering with turbo with fixed offset voltages of just one step above stock with Ultra High LLC, and it runs cooler and with more stable clock speeds. I'm Priming 245 base right now with multipliers of 17.5, 18.5, and 19. Running four threads it's almost rock solid at 4.55GHz, but it has throttled one core below the 4.3GHz minimum clock I defined, so I'm not sure I'd call it a success. It'd be a great way to get some free speed in lightly threaded apps if it didn't throttle below the lowest multiplier like that.

My guess is that APM features some sort of overall power throttle. I tried disabling it again and the lowest clock (4.3GHz) stayed in effect, but it didn't throttle below that. Turbo didn't work anymore, but the point was to see if the throttling would stop, and it did. With it on, eight threads of small or large FFTs would throttle below 4.3 regularly.

It's a pity that they hamstrung turbo by design like that. It'd be an awesome way to scale an overclock dynamically. I might still use it for gaming since that doesn't really hammer the CPU anywhere near Prime95 level, but that's the limit to its usefulness. Even then it's unreliable at best.

EDIT: Forgot to mention that the throttling with APM on wasn't due to temps brought on by the higher turbo clocks - the instant I turned on eight threads of large or small FFTs it dropped to 4.3 and started throttling below that on random cores. Nothing had time to warm up.

I personally tried overclocking with turbo enabled and ran some benchs afterwards. what I've noticed is turning off turbo core and upping the fsb/ multiplier to a decent level has resulted in more stable performance this route. I think my max settings before tweaking to much voltage is somewhere around 224*21 with 2400 transport and 2900 hypertransport or something like that. But I'm still tweaking and hoping for at least a 4.8 clock. this is my 8350 btw, still haven't decided towards the 9370 yet, lol
post #32573 of 67492
Hey all, I just purchased an 8320 to switch things up over my Intel build and have been doing some over clocking on it. I'm using a sabertooth 990Fx r2.0 and the latest bios. Unfortunate my chip came stock at 1.4v.. And anything over 1.43 gets a little too hot for me 212 evo. Most others have a much lower stock voltage, did I just get a poor chip? Cheers!
post #32574 of 67492
turn off turbo and reboot
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post #32575 of 67492
Yeah, and I'm weird about consistent performance. I like the potential of turbo OCing, but I'm not sure it's worth the variability. Admittedly, most games don't tax my CPU too much, so I'd probably never see throttling in normal use, but I don't like that it exists as a possibility. I might play BF3 for a few hours (I don't play BF4 anymore...netcode!) and see if it ever dips below 4.3.

If only it didn't throttle below the lowest multiplier under heavy load. Oh well.

As for the 9370...I'd send it back, but that's just me. Then again, I'm cheap, and those things aren't. tongue.gif
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post #32576 of 67492
Quote:
Originally Posted by Alastair View Post

Well we have all seen guys running 1.6v+ 24/7. So why not go balls to the walls on volts and see where the chip takes you. Then come back to us with results!

Well i have done 1.64v as well, and thats a easy 5.212Ghz stable. Well, temps are still under 55C on 1.6v+ when you're on water biggrin.gif
I will post some results soon, but 1.6v+ for stable 5.2Ghz is not really golden tough, because i have seen some gentlemans doing 5.2Ghz on 1.512v (not sure they are 24/7 stable). I can pass all benchmarks on 5.2Ghz on 1.526v, literally all benchmarks, but once i play BF4 it's like a timebomb. Seems like BF4 needs 1.6v+ for 5.2Ghz while 5.120Ghz is rock solid on just 1.548v. This chip is really crazy 5.1ghz only needs 1.54v but 5.2 needs 1.6v+....
post #32577 of 67492
I just bought the AMD Liquid Cooler used for 50$. Here's a pic-


Just a couple of few questions before I install it.

1) I want to setup a push and pull configuration. So which fan should be facing the radiator and which should be away from it?
2) The seller mentioned that I would need to download some driver for it which can be downloaded online and to get the software for the Antec Kuhler 920. So where can I get this from?
3) Seller mentioned that I need to plug the wore attached to the radiator into a usb on the mobo? I don't quite understand that. I have the GA 78LMT USB3 Rev 5.0 mobo. so can someone help me with that?
4) Seller also mentioned that I would need the stock back plate of my mobo to install the cooler. So does my mobo have a back plate?
Please do help me.
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post #32578 of 67492
1.look at side of fan it should have arrow showing rotation and airflow if not spin it with hand and see which direction air is blowing(or plug it in)
2.antec.com for software
3.plug into usb header on mobo iirc
4.I believe you need the backplate that comes with the kit not the motherboard backplate at least my 620 does, pics are on antec site
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post #32579 of 67492
Quote:
Originally Posted by diggiddi View Post

1.look at side of fan it should have arrow showing rotation and airflow if not spin it with hand and see which direction air is blowing(or plug it in)
2.antec.com for software
3.plug into usb header on mobo iirc
4.I believe you need the backplate that comes with the kit not the motherboard backplate at least my 620 does, pics are on antec site

I just uploaded a pic of whatever I got with it. Am I missing something?

Both fans have two arrows on the right side. An arrow going upwards and an arrow pointing to the right. So what goes infront of the radiator and which fan goes at the back of it screwed onto the case. This is my first time working with liquid cooling. Downloaded the antec 920 software from the site.
Edited by jason387 - 3/29/14 at 12:09am
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post #32580 of 67492
Thread Starter 
Quote:
Originally Posted by jason387 View Post

Quote:
Originally Posted by diggiddi View Post

1.look at side of fan it should have arrow showing rotation and airflow if not spin it with hand and see which direction air is blowing(or plug it in)
2.antec.com for software
3.plug into usb header on mobo iirc
4.I believe you need the backplate that comes with the kit not the motherboard backplate at least my 620 does, pics are on antec site

I just uploaded a pic of whatever I got with it. Am I missing something?

Both fans have two arrows on the right side. An arrow going upwards and an arrow pointing to the right. So what goes infront of the radiator and which fan goes at the back of it screwed onto the case. This is my first time working with liquid cooling. Downloaded the antec 920 software from the site.

The backplate is the retention plate on the back of the motherboard.

It's the black thing:
c069d184_img20121030194626.jpeg
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