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[OFFICIAL] FX-8320/FX-8350 Vishera Owners Club - Page 292

post #2911 of 67357
It can be set manually. I found it needed to be 1.3v+ for stability over 4.7ghz with my 8320. This is my current OCCT stable 4.8ghz settings;
Quote:
FSB - 267
Multi - 18
CPUvcore - 1.55v load, 1.52v idle
CPU LLC - Ultra High
CPU current - 100%
Spread spectrum - off
CPU/NB LLC - Regular
CPU/NB Current - 100%
Power Phase control - Optimized
DRAM current - 120%
DRAM Power Phase control - Optimized
CPU/NB - 1.337v
DRAM - 1.50v
VDD PCIE - 1.1v
VDDR - 1.23v
NB - 1.15v
VDDA - 2.69v
SB - 1.1v
CnQ - on
C6 - on
DRAM freq - 1071MHz
DRAM timings - 10-10-10-28
HT - 2143MHz
NB - 2143MHz

I tried running the next HT and NB speed, ~2450MHz, but it wasn't stable. Does anyone think the NB at around 1.2v might sort that?
post #2912 of 67357
Quote:
Originally Posted by wolvers View Post

It can be set manually. I found it needed to be 1.3v+ for stability over 4.7ghz with my 8320. This is my current OCCT stable 4.8ghz settings;
I tried running the next HT and NB speed, ~2450MHz, but it wasn't stable. Does anyone think the NB at around 1.2v might sort that?

Holy FSB.

I don't think you should need 1.55v for 4.8. What kind of RAM do you have? 1071 @ 10-10-10-28 seems extremely underclocked, unless if I'm missing something.
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post #2913 of 67357
Well it's DDR, so it's actually 2142MHz. 1071 is how CPUz reports it.

1.55v for 4.8 is high, but thats how most of the 8320s are. 8350s need less volts for that kind of clock.
post #2914 of 67357
Quote:
Originally Posted by wolvers View Post

Well it's DDR, so it's actually 2142MHz. 1071 is how CPUz reports it.
1.55v for 4.8 is high, but thats how most of the 8320s are. 8350s need less volts for that kind of clock.

Oh! I apologize on both accounts tongue.gif

Have you tried disabling cool n' quiet, as well as your other power saving features? Sometimes that can read false positives in Prime95 or cause instability.
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post #2915 of 67357
Quote:
Originally Posted by wolvers View Post

Well it's DDR, so it's actually 2142MHz. 1071 is how CPUz reports it.
1.55v for 4.8 is high, but thats how most of the 8320s are. 8350s need less volts for that kind of clock.

Yeah if I could handle the heat for it, my 8320 would need around that voltage for 4.8GHz stable. It seems like for my chip 4.5GHz is the sweet spot and I can run it all day with one little bump to the voltage offset. I guess I could OC higher but the temps get crazy and so does the voltage. All that stress on the chip for 100-200MHz isn't work it for me. Besides I'm still playing Skyrim my 2nd time through and its smooth as can be.
post #2916 of 67357
Quote:
Originally Posted by wolvers View Post

It can be set manually. I found it needed to be 1.3v+ for stability over 4.7ghz with my 8320. This is my current OCCT stable 4.8ghz settings;
I tried running the next HT and NB speed, ~2450MHz, but it wasn't stable. Does anyone think the NB at around 1.2v might sort that?

I'm currently testing that same OC.
Here's where I'm at so far,



Try adding some CPU VDDA.
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Samsung 960 EVO NVMe Samsung 840 SSD Corsair GT SSD WD 2TB Black 
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post #2917 of 67357
^^ Any particular reason you guys chose to lower the multiplier and overclock with a high FSB?
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post #2918 of 67357
Quote:
Originally Posted by FurtadoZ9 View Post

^^ Any particular reason you guys chose to lower the multiplier and overclock with a high FSB?

FSB oc'ing has a "tiny" increase in performance over just multi increase, however fsb method also seems to need a little more v here and there (not cpu v but v to other things) to make it stable. (At least in my limited findings and observations)
post #2919 of 67357
Quote:
Originally Posted by FurtadoZ9 View Post

^^ Any particular reason you guys chose to lower the multiplier and overclock with a high FSB?

In my case I'm working on a Full System OC which when completed will have more bandwidth and use less voltage (Vcore and CPU/NB) than a simple CPU only OC. Still have a ways to go to reach my goal.

As a rule you can spread out the stress (voltage loads) between the components and take advantage of an HTT OC unlike a CPU only OC.
More performance gains to come next by increasing HT and NB Freq along with Dram.

On this Crosshair V Formula Z I've booted at a 320+MHz Ref Clock but have to start somewhere so I choose 267MHz as it gets my Dram Freq close to stock (2142MHz) and isn't real crazy to test CPU Freq with as I turn things up!
Edited by The Sandman - 11/10/12 at 10:48am
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Bruce
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R7 1800x Crosshair VI Hero Diamond 7970 GSkill FlareX F4-3200C14D-16GFX  
Hard DriveHard DriveHard DriveHard Drive
Samsung 960 EVO NVMe Samsung 840 SSD Corsair GT SSD WD 2TB Black 
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WD 4TB Red EK-FB Asus C6H Monoblock XSPC GPU Razor WB XSPC RX 360 
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Win 10 Pro Asus VE248H x2 EVGA 850 G2 Xigmatek Elysium 
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FX 6350 Asus M5A99FX Pro R2.0 GTX220 G.Skill Ripjaws X F3-17000CL9D-8GBXLD 9-11-9-28... 
Hard DriveHard DriveHard DriveOptical Drive
Samsung 840 Pro WD20EFRX 64M Red x4 raid 10 WD5001AALS Blk Asus DRW-24B1ST 
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Hyper 212 Evo R2 Windows Server 2008 R2 Standard Asus  Logitech MK300 
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Corsair HX500 Corsair 330R Titainium 
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post #2920 of 67357
Quote:
Originally Posted by The Sandman View Post

In my case I'm working on a Full System OC which when completed will have more bandwidth and use less voltage (Vcore and CPU/NB) than a simple CPU only OC. Still have a ways to go to reach my goal.
As a rule you can spread out the stress (voltage loads) between the components and take advantage of an HTT OC unlike a CPU only OC.
More performance gains to come next by increasing HT and NB Freq along with Dram.
On this Crosshair V Formula Z I've booted at a 320+MHz Ref Clock but have to start somewhere so I choose 267MHz as it gets my Dram Freq close to stock (2142MHz) and isn't real crazy to test CPU Freq with as I turn things up!

I see.

Is the general rule of thumb still to keep HT link as close to 2000 mhz as possible?
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