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[OFFICIAL] FX-8320/FX-8350 Vishera Owners Club - Page 204

post #2031 of 67227
Hi just got my 8320 today as an upgrade to 8120 and I must say this thing is really power hungry...

Untitled.png 3646k .png file

I'm using an h100 for cooling with 4 fans

And its still a little unstable... and the voltage seams excessive...
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post #2032 of 67227
Quote:
Originally Posted by tinouthedino View Post

do you get different numbers by upping the NB?
I noticed you only changed the HT frequency but the NB frequency stays at 2200
Try changing upping the NB frequency you should be able to see increases in memory copy/write/read and latency..
nb increase really didn't do anything, that is why I didn't bother posting nb only shots, the biggest differences were between ht / fsb / mult.
post #2033 of 67227
Quote:
Originally Posted by ComputerRestore View Post

Wow, I've never actually heard of this method of overclocking. Just doesn't seem right to me.

It's vdroop man. It'd so bad on the GB's boards without LLC. so instead you gotta overvolt it A LOT, because the vdroop will cause both the idle and load voltage to drop a lot. SO if i overvolt it like this, it's simply gonna drop down to where it would be on a MB with LLC or a normal board with little to no vdroop. As long as the VRMs can handle it, it's fine.

Also, Cool N Quiet makes sense on these baords since Cool n Quiet will be effective while idling - which will reduce the idle volt and clocks below what the vdroop made it. All in all, it's a matter of tweaking it right.
    
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post #2034 of 67227
Quote:
Originally Posted by endevite View Post

Okie dokie here are my findings on a Sabertooth rev1 990fx w/ 1604 bios
Most tests were done with ripjawsx 2133 cl11 ram 4x4gb set, HX850 psu, Xigmatek Aegir Air cooler, on Windows 7.
Here are the main settings that were used in bios config.
ERP Off
D.O.C.P. Mode (not manual or auto)
DDR3 1600
22.5/19/18.5.18 multiplyer
200/238/240/245 fsb
nb as near to 2200 as possible (not auto)
ht ranging from 2160 to 2626, depending on how bad fsb mangles it.
Spreads all disabled
epu power saving off
cpu load line med
cpu/nb load line high
cpu current cap 100%
cpu/nb current cap 100%
cpu powerphase optimal
vrm spread disabled
cpu&nb voltage in manual mode
cpu 1.425 (sits at 1.404 and 1.356 on max load in IBT)
cpu/nb 1.1750
vdda 2.5
dram 1.65
nb 1.15
nb ht 1.25
Easily hold clocks regardless of multiplier vs ht vs nb vs nb @ 4.5ghz with about the same temp on idle and max.

CPUID Submissions
4.5ghz @ 200fsb 22.5x 1.404v
http://valid.canardpc.com/2563820
4.5ghz @ 240fsb 19x 1.404v
http://valid.canardpc.com/2563845
4.5ghz @ 238fsb 2600ht 19x 1.404v
http://valid.canardpc.com/2563900
4.5ghz @ 245fsb 2450ht 18.5x 1.404v
http://valid.canardpc.com/2563943
4.5ghz @ 245fsb 2450ht 18.5x 1.404v mem@1966(983) 1.65v 10-10-10-28-2t
http://valid.canardpc.com/2564001
4.5ghz @ 200fsb 22.5x 1.404v mem@2133XMP 1.65v 11-11-11-30-2t
http://valid.canardpc.com/2564063
Now for the un-pretty grouping of cinebench 11.5 stuff between most of the achieved clocks. (note these were done without the microsoft bulldozer patches.)

Now for the mem benches using memmax2
these were all done @ 1600 because of a problem I found that you will see in the next set.

Now for the IMC/Board/BIOS problem I ran into, I don't know which to blame but one of them is mucking up any testing above 1600 memory speeds. (Both in 2 stick and 4 stick configs, I get the same numbers either way.)

And last but not least the HWinfo which was never changing through these tests.

I currently blame my reaaaly high ambient temp for making me need a liquid 240mm rig to go higher than 4.5 safely.

I only see a CPU temp reading, not core.

my H60 gets me to 4.6ghz and 4.7ghz if i want to fry my chip (high 60's). Your air cooler should be able to manage much more than 4.5ghz.
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post #2035 of 67227
Quote:
Originally Posted by Gundamnitpete View Post

I only see a CPU temp reading, not core.
my H60 gets me to 4.6ghz and 4.7ghz if i want to fry my chip (high 60's). Your air cooler should be able to manage much more than 4.5ghz.

It's the really high ambiance (and only using single fan push, don't have the top fans on this sink), even in the case its 35/36c during the night, during day it's higher. I will be getting a liquid rig anyway soon enough, then I will see how far I can get this cherry. thumb.gif

(When I say liquid I mean 240mm custom rig, not H100)
Edited by endevite - 10/31/12 at 12:10pm
post #2036 of 67227
Quote:
Originally Posted by Timeofdoom View Post

It's vdroop man. It'd so bad on the GB's boards without LLC. so instead you gotta overvolt it A LOT, because the vdroop will cause both the idle and load voltage to drop a lot. SO if i overvolt it like this, it's simply gonna drop down to where it would be on a MB with LLC or a normal board with little to no vdroop. As long as the VRMs can handle it, it's fine.
Also, Cool N Quiet makes sense on these baords since Cool n Quiet will be effective while idling - which will reduce the idle volt and clocks below what the vdroop made it. All in all, it's a matter of tweaking it right.

Hate damn vdrop ..... didn't know this before purchased my board ....... However, it makes sense if you care for power consumption. So i guess for now i'll settle for a mild overclock (this chip is great compared to my 955@4GHz) and later on maybe GB will issue a bios with the option to turn off vdrop for good. smile.gif
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post #2037 of 67227
Got my 8320 last night...after having some really dumb issues with my cooling setup, was able to get things rolling.

In my brief time working on the chip, I have it stable at 4.45GHZ at 1.43v with NB@ 2200, nothing else changed, my temps maxed at 56C in IBT and stayed in the mid 40's so I think I got some wiggle room. Going to try bumping it higher this afternoon...biggest issue seems to be temps and my air setup is less than optimal atm rolleyes.gif

I've got a UD3 board (rev 1.1) and haven't seen huge vdroop yet, mine stayed happily around 1.4 the entire time I ran IBT

Tomorrow should provide an even better chance to push the chip as my Kuhler 920 arrives biggrin.gif
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post #2038 of 67227
Quote:
Originally Posted by endevite View Post

Okie dokie here are my findings on a Sabertooth rev1 990fx w/ 1604 bios
Most tests were done with ripjawsx 2133 cl11 ram 4x4gb set, HX850 psu, Xigmatek Aegir Air cooler, on Windows 7.
Here are the main settings that were used in bios config.
ERP Off
D.O.C.P. Mode (not manual or auto)
DDR3 1600

Have you done any testing without using D.O.C.P.? I've found issues with just overclocking using it.

Could you also try setting the NB, HTT and DRAM all to an 8x multi and put the FSB to 250 and try it there.
So 2000 Mhz for all those, and run a Cinebench and MemTest with your current overclock of 4.5Ghz
Quote:
Originally Posted by Timeofdoom View Post

It's vdroop man. It'd so bad on the GB's boards without LLC. so instead you gotta overvolt it A LOT, because the vdroop will cause both the idle and load voltage to drop a lot. SO if i overvolt it like this, it's simply gonna drop down to where it would be on a MB with LLC or a normal board with little to no vdroop. As long as the VRMs can handle it, it's fine.
Also, Cool N Quiet makes sense on these baords since Cool n Quiet will be effective while idling - which will reduce the idle volt and clocks below what the vdroop made it. All in all, it's a matter of tweaking it right.

Yeah I've never experienced it that bad. I have a GA 990FX UD3 Rev 1.0 that I overclock my Bulldozer on. If I needed 1.5v, I'd set it at 1.5v etc. Had my FX 8150 at 5.2Ghz on that board at 1.6v (1.63 under load) so I dunno....
Edited by ComputerRestore - 10/31/12 at 12:31pm
post #2039 of 67227
Quote:
Originally Posted by ComputerRestore View Post

Have you done any testing without using D.O.C.P.? I've found issues with just overclocking using it.
Could you also try setting the NB, HTT and DRAM all to an 8x multi and put the FSB to 250 and try it there.
So 2000 Mhz for all those, and run a Cinebench and MemTest with your current overclock of 4.5Ghz
Yeah I've never experienced it that bad. I have a GA 990FX UD3 Rev 1.0 that I overclock my Bulldozer on. If I needed 1.5v, I'd set it at 1.5v etc. Had my FX 8150 at 5.2Ghz on that board at 1.6v (1.63 under load) so I dunno....

Tried 250fsb, unstable at those voltages, manual is what I used before finding I prefer docp. My limit isn't stability it's the heat I'm hitting with air. 4.5ghz@1.404v is pretty sweet, just need to cure heat wall.
post #2040 of 67227
Thread Starter 
Quote:
Originally Posted by endevite View Post

nb increase really didn't do anything, that is why I didn't bother posting nb only shots, the biggest differences were between ht / fsb / mult.

Ya, NB is a Ph II thing. But linking NB and HT is a BD thing, that might help.
Quote:
Originally Posted by Timeofdoom View Post

It's vdroop man. It'd so bad on the GB's boards without LLC. so instead you gotta overvolt it A LOT, because the vdroop will cause both the idle and load voltage to drop a lot. SO if i overvolt it like this, it's simply gonna drop down to where it would be on a MB with LLC or a normal board with little to no vdroop. As long as the VRMs can handle it, it's fine.
Also, Cool N Quiet makes sense on these baords since Cool n Quiet will be effective while idling - which will reduce the idle volt and clocks below what the vdroop made it. All in all, it's a matter of tweaking it right.

Please get a board with LLC frown.gif I die a little inside when i read 1.7**v on anything less then LN2, and I rum my Ph II with 1.55v 24/7.
Quote:
Originally Posted by endevite View Post

It's the really high ambiance (and only using single fan push, don't have the top fans on this sink), even in the case its 35/36c during the night, during day it's higher. I will be getting a liquid rig anyway soon enough, then I will see how far I can get this cherry. thumb.gif
(When I say liquid I mean 240mm custom rig, not H100)

Good man. I don't have the patience to deal with a custom loop.

Anyway, remember those 1866 Kingstons? Ya, they're actually a 2000 kit. Knowing this, I raised timings way too much for the very small bump I gave them. Time to play around again, maybe break 12GB/s in MaxxMem. biggrin.gif
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