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[OFFICIAL] FX-8320/FX-8350 Vishera Owners Club - Page 534

post #5331 of 67694
Quote:
Originally Posted by AsanteSoul View Post

Really need to know if an 8350 can run 3 way sli for 660ti's or two 670's.... if it does this well..I
m considering it for my new build... do you think I'll have issues?

Red1776 is your man to speak to!
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post #5332 of 67694
I've owned a FX-8350 for almost a week now. Such an upgrade from my old Athlon 64 x2 6000+. Idles at 13-14 C which is absolutely fantastic compared to what my 6000+ idled at, around 35-40 C.

Having some issues getting this thing to a stable overclock though. Just about ANYTHING above stock throws errors or results in an immediate BSOD upon boot.
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post #5333 of 67694
the idling at 13-14 is the caculation being off... its idling closer to upper 20's depending on your ambient, but when the temps get close to 45-60 range they become very accurate at temperature calculation
post #5334 of 67694
Quote:
Originally Posted by AsanteSoul View Post

Really need to know if an 8350 can run 3 way sli for 660ti's or two 670's.... if it does this well..I
m considering it for my new build... do you think I'll have issues?

The 8350/8320 will have no problem running three or four 670/680's
I have run 4x6970's and currently 3 x 7970's + GT 640(physics) and they scale to all 3 or four cards with 100% use (the only limiting factor is the game software)

OCN Official Top 30 Heaven 3.0 Scores ( see # 21...and #29 for that matter)

Metro 2033

BF3

Dirt 3

Edited by Red1776 - 12/11/12 at 11:33am
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post #5335 of 67694
Quote:
Originally Posted by cssorkinman View Post

If your asking about the cpu lid not contacting the cpu properly, well that's very unlikely. But its possible that your cooler isn't mounted properly , no harm in reapplying thermal paste and remounting the cooler.
From the graphs in occt , it looked like throttling due to heat, but the downclocking matched the behavior that CNQ would exhibit if it was enabled, are you sure you had it turned off?
It's looking as though your chip needs quite a bit more voltage to be stable than mine does at a given speed, that's just the luck of the draw. This makes more heat and makes getting faster even more difficult.

Yes i checked again cnq and other power saving things are disabled..i checked cooler and remove again apply thermal paste but nothing changed..i dont have any temp issue. Temp max 57 celcius but
i tested occt again same graphics after 8 minutes later. vcore otomaticly dropped sometimes..i asked something about cores.People overclock tested all core enable or disable any cores?
What do u think about this problem.. is related psu or mainboard or mainboard bios software or i have very very bad cpu?
post #5336 of 67694
Quote:
Originally Posted by hatrix216 View Post

I've owned a FX-8350 for almost a week now. Such an upgrade from my old Athlon 64 x2 6000+. Idles at 13-14 C which is absolutely fantastic compared to what my 6000+ idled at, around 35-40 C.
Having some issues getting this thing to a stable overclock though. Just about ANYTHING above stock throws errors or results in an immediate BSOD upon boot.

First thing is first. Check that your memory is stable. Even if you can boot into windows and seem to run OK, I'd download and burn the memtest86+ program and boot into it and test your memory. It may not even be that the memory is 'bad', it may just be incompatible. I had some incompatibility issues with Corsair and Patriot memory which were only finally resolved when I went with G.Skill. Also, make sure you're running the memory (if it is error-free) at the correct speed settings.

Next, check your temps. And not just the CPU temps, either. The north bridge on many motherboards will shoot up towards 80 degrees very quickly once you start changing the multiplier and increasing the voltage, so watch out! At that temp, you're seriously risking blue screens. Also, for the CPU, you'll need the very best air/mid-level water cooling to hit 4.5-4.6GHz stable, and really, top-end closed loop (Corsair H100) water cooling or custom loop water to hit 5GHz (assuming your chip can do it). I'm currently only using an Antec Kuhler 620, and I'm about to try overclocking my rig (finally), but I'm not expecting to get much higher than 4.5GHz with it for everyday operation.

Finally, from I've seen, the best overclocking approach (assuming you have stable ram and decent cooling) is simply to raise the multiplier one increment at a time and testing at that speed. If you get to speed where your temps are still under control, but you aren't quite stable, bump the CPU voltage up one notch. Also, if you have a motherboard with LLC (load line calibration), the 'high' setting on Gigabyte boards is best for stability. This setting will maintain the requested voltage without either VDroop, or intermittent surges of additional voltage. 'Very High' and 'Extreme' LLC settings both allow the board to overshoot the bios-specified voltage for additional stabliity, but may put your past stable temps if your cooling is overburdened. Once you find the highest stable overclock using just the multiplier and voltage adjustment, you can then go nuts playing with all the other settings to try to target that final CPU clockspeed you originally found using just the multiplier, but this is the domain of the enthusiast and the very patient (not to mention those with enough money and time to build custom water loops!)

Don't take the above to be words of discouragement, however. On the contrary. I'm glad to hear you've moved to the FX from your old A64 X2 workhorse. Just trying to set your expectations so you won't be disappointed!

Best of luck, and enjoy your AMD FX!
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post #5337 of 67694
Quote:
Originally Posted by Red1776 View Post

The 8350/8320 will have no problem running three or four 670/680's
I have run 4x6970's and currently 3 x 7970's + GT 640(physics) and they scale to all 3 or four cards with 100% use (the only limiting factor is the game software)
OCN Official Top 30 Heaven 3.0 Scores ( see # 21...and #29 for that matter)

Metro 2033

BF3

Dirt 3

Red, does that GT640 for physx give you all the physx performance you ever need in the games you play? Just curious.
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post #5338 of 67694
Quote:
Originally Posted by thunderass View Post

Yes i checked again cnq and other power saving things are disabled..i checked cooler and remove again apply thermal paste but nothing changed..i dont have any temp issue. Temp max 57 celcius but
i tested occt again same graphics after 8 minutes later. vcore otomaticly dropped sometimes..i asked something about cores.People overclock tested all core enable or disable any cores?
What do u think about this problem.. is related psu or mainboard or mainboard bios software or i have very very bad cpu?
57 C is pretty hot to my way of thinking, my phenom II's didn't like anything over 50 when stress testing.
I would all but rule out a bad psu. So that leaves us with heat, motherboard, chip or bios problems. It's possible that the bios or the software used for the overclocking have a bug in them but I'm still thinking that it's heat related. Can you place a fan near the north bridge and the heatsink on the VRM's?
While its possible your cpu just isn't a good overclocker, that by itself wouldn't necessarily make it downclock and lower the voltage when it's stressed.
I guess your options are down to , getting better cooling ( on the vrm's and cpu - which if you are hitting 57c on the core now, you will need anyway to go faster) or trying a different motherboard.
Wish i could be more helpful , If you lived across town , I'd come over with my H-100 and see if that did the trick smile.gif
You could disable cores, but thats not why you bought an 8 core processor wink.gif.
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post #5339 of 67694
Quote:
Originally Posted by anubis44 View Post

First thing is first. Check that your memory is stable. Even if you can boot into windows and seem to run OK, I'd download and burn the memtest86+ program and boot into it and test your memory. It may not even be that the memory is 'bad', it may just be incompatible. I had some incompatibility issues with Corsair and Patriot memory which were only finally resolved when I went with G.Skill. Also, make sure you're running the memory (if it is error-free) at the correct speed settings.
Next, check your temps. And not just the CPU temps, either. The north bridge on many motherboards will shoot up towards 80 degrees very quickly once you start changing the multiplier and increasing the voltage, so watch out! At that temp, you're seriously risking blue screens. Also, for the CPU, you'll need the very best air/mid-level water cooling to hit 4.5-4.6GHz stable, and really, top-end closed loop (Corsair H100) water cooling or custom loop water to hit 5GHz (assuming your chip can do it). I'm currently only using an Antec Kuhler 620, and I'm about to try overclocking my rig (finally), but I'm not expecting to get much higher than 4.5GHz with it for everyday operation.
Finally, from I've seen, the best overclocking approach (assuming you have stable ram and decent cooling) is simply to raise the multiplier one increment at a time and testing at that speed. If you get to speed where your temps are still under control, but you aren't quite stable, bump the CPU voltage up one notch. Also, if you have a motherboard with LLC (load line calibration), the 'high' setting on Gigabyte boards is best for stability. This setting will maintain the requested voltage without either VDroop, or intermittent surges of additional voltage. 'Very High' and 'Extreme' LLC settings both allow the board to overshoot the bios-specified voltage for additional stabliity, but may put your past stable temps if your cooling is overburdened. Once you find the highest stable overclock using just the multiplier and voltage adjustment, you can then go nuts playing with all the other settings to try to target that final CPU clockspeed you originally found using just the multiplier, but this is the domain of the enthusiast and the very patient (not to mention those with enough money and time to build custom water loops!)
Don't take the above to be words of discouragement, however. On the contrary. I'm glad to hear you've moved to the FX from your old A64 X2 workhorse. Just trying to set your expectations so you won't be disappointed!
Best of luck, and enjoy your AMD FX!

Thanks for the info, I appreciate the response. I'm going to run memtest soon here, definitely want to make sure my ram doesn't have any errors. I haven't checked the NB temp when running prime but I'll make sure to next time.

Even though it can be frustrating at times I still always love pushing my rigs to their limits
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post #5340 of 67694
This is actually pleasing to me...I was planning intel (just based on things I've been told as far as bottlenecks go)...but If I can use this chip with no issues with dual 680's/670's or the 660ti's then I'm all for it... The only other reason I considered Intel was the ease in overclocking... How hard or easy is it with these chips? Is memory timings, and speed still an important factor in getting high overclocks? I'm very new to it, but with my old intel cpu it was easy enough to get to 4.4ghz
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