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[OFFICIAL] FX-8320/FX-8350 Vishera Owners Club - Page 454

post #4531 of 67357
Quote:
Originally Posted by bios0110 View Post

madbrain, I don't have a gigabyte board. Sounds like you already covered the basis tho. 4.6Ghz looks realistic based on what you say, though even that in my opinion needs to be tweaked a bit more because you should be able to run longer than 7hrs. I belive 12 to 24hrs is considered stable.
Also, as some have said, Prime95 is more of stability test than a stress test. I'd suggest that @ 4.6 you run IBT for 3 hrs then see how long it will take prime95 (blend) to lose a core.

Thanks for your response.
What is IBT ?

I really need somebody with a Gigabyte 990FXA-UD3 board to to post their advanced BIOS settings.
post #4532 of 67357
Quote:
Originally Posted by madbrain View Post

Quote:
Originally Posted by bios0110 View Post

madbrain, I don't have a gigabyte board. Sounds like you already covered the basis tho. 4.6Ghz looks realistic based on what you say, though even that in my opinion needs to be tweaked a bit more because you should be able to run longer than 7hrs. I belive 12 to 24hrs is considered stable.
Also, as some have said, Prime95 is more of stability test than a stress test. I'd suggest that @ 4.6 you run IBT for 3 hrs then see how long it will take prime95 (blend) to lose a core.

Thanks for your response.
What is IBT ?

I really need somebody with a Gigabyte 990FXA-UD3 board to to post their advanced BIOS settings.

Intel burn test. Download here
post #4533 of 67357
Quote:
Originally Posted by madbrain View Post

Thanks for your response.
What is IBT ?
I really need somebody with a Gigabyte 990FXA-UD3 board to to post their advanced BIOS settings.

I got bus overclocking working with my UD5. There are dead zones where the bus speed just messes everything up. Inching forward in 1mhz incriments from 200mhz I found it grew less and less stable. 24.5x205 wasn't stable, but 230x22 is and so was 25x203 after a CPUNB voltage adjustment. 253 x 20 seems stable, but 254 only made 9 passes of IBT and 255 didn't make a single one before hard lock.

I only started taking good notes a little late in the game, but it seems I've found stable bus speeds on UD5 with FX 8350 at around 200mhz, 215mhz, 230mhz, and 253mhz. Just changing bus speed by 2 mhz, even if it makes the total CPU speed lower and the CPUNB, HT, and RAM are all at settings you know are stable, can make my system go from 10+ runs of IBT to hard locking before a single run finishes. It's really, really weird, but I do recall someone else saying their Phenom 2 was the same way with bus speed dead zones.

Basically, you don't bus overclock FX like you traditionally would. Just feel free to throw it wherever you want and adjust other multipliers accordingly. It feels really odd to not take small steps with the bus, but you need to do it to bus overclock on gigabyte boards.
Edited by sdlvx - 11/29/12 at 11:19pm
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post #4534 of 67357
sdlvx,
Quote:
Originally Posted by sdlvx View Post

I got bus overclocking working with my UD5. There are dead zones where the bus speed just messes everything up. Inching forward in 1mhz incriments from 200mhz I found it grew less and less stable. 24.5x205 wasn't stable, but 230x22 is and so was 25x203 after a CPUNB voltage adjustment. 253 x 20 seems stable, but 254 only made 9 passes of IBT and 255 didn't make a single one before hard lock.
I only started taking good notes a little late in the game, but it seems I've found stable bus speeds on UD5 with FX 8350 at around 200mhz, 215mhz, 230mhz, and 253mhz. Just changing bus speed by 2 mhz, even if it makes the total CPU speed lower and the CPUNB, HT, and RAM are all at settings you know are stable, can make my system go from 10+ runs of IBT to hard locking before a single run finishes. It's really, really weird, but I do recall someone else saying their Phenom 2 was the same way with bus speed dead zones.
Basically, you don't bus overclock FX like you traditionally would. Just feel free to throw it wherever you want and adjust other multipliers accordingly. It feels really odd to not take small steps with the bus, but you need to do it to bus overclock on gigabyte boards.

Thanks, that helps !
Did FSB overclocking get you your best overclock ?
Or are you just using the multiplier ?

Would you mind posting your BIOS settings ? I have spent tons of time and not getting anywhere.

Things like :

CPU clock ratio
Northbridge freq
CPB
CPU host control
CPU frequency
PCIE clock

HT link width
HT link frequency
DRAM EOCP
set memory clock
memory clock

voltage
CPU PLL
DRAM voltage
DDR VTT
NB voltage
HT Link voltage control
NB/PCIe/PLL Voltage Control
CPU NB VID
CPU voltage

Load Line Calibration


Much appreciated!
post #4535 of 67357
oopsie..

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post #4536 of 67357
Quote:
Originally Posted by kzone75 View Post

oopsie..


too mirror for you?
post #4537 of 67357
Quote:
Originally Posted by kzone75 View Post

oopsie..


HAHAHAHA that is some cool artwork LOL, so does it affect performance?
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post #4538 of 67357
Quote:
Originally Posted by Solders18 View Post

Intel burn test. Download here

Thanks. I downloaded it and tried it.

It seems much less useful than prime 95 for me.

I have just found several instances where IBT ran 10 passes successfully, but Prime 95 caused immediate failures.

I finally found a few settings that worked for higher FSB. The highest I could get to POST was 260.

At 19 x 260 or 4.94 GHz , I got IBT to pass 10 times. Though the result was ... interesting (a NaN ..) but all 10 were the same.
Max temp was 58°C , pretty high, but I'm on air.

Soon after IBT stopped, I started Prime 95. I got an instant BSOD !

After that, I lowered the multiplier to 18.5, ie 4.81 GHz .
IBT ran 10 passes again, this time with a more proper value. Max temp was 57°C, not much different.
After several minutes of idling, I started Prime 95. Several threads stopped within seconds.

FYI my latest BIOS settings are :

CPU clock ratio X18.5 4810
Northbridge freq x8 2080
CPB off
CPU host control auto
CPU frequency 260
PCIE clock 100

HT link width auto
HT link frequency x10 2600
DRAM EOCP Disabled
set memory clock Manual
memory clock X5.33 1385

voltage auto
CPU PLL normal 2.5V
DRAM voltage normal 1.5V
DDR VTT normal 0.75V
NB voltage normal 1.10V
HT Link voltage control normal 1.2V
NB/PCIe/PLL Voltage Control normal 1.8V
CPU NB VID normal
CPU voltage +0.1V 1.4375V

Load Line Calibration auto

BIOS boot OK
Windows boot OK
IBT OK

max temp 57°C

Prime 95 stops immediately

I know I'm underclocking the RAM right now, but the next RAM multiplier up puts it at 1732 MHz and my 1600 MHz will not post. Though maybe they would if I push the RAM voltages up, I just haven't tried.
Only trying to get the CPU OC'ed for now.

The problem with the FSB earlier was that apparently the FX has a minimum frequency. Trying something as low as 1500 MHz was no good and required clearing CMOS.
When I started playing at 16x 220 it posted OK.
I just ramped up from there in 20 increments.
Hit a wall at 280 so went back to 260 .
Now I'm just working on the multiplier...
post #4539 of 67357
Quote:
Originally Posted by madbrain View Post

Quote:
Originally Posted by Solders18 View Post

Intel burn test. Download here

Thanks. I downloaded it and tried it.

It seems much less useful than prime 95 for me.

I have just found several instances where IBT ran 10 passes successfully, but Prime 95 caused immediate failures.

I finally found a few settings that worked for higher FSB. The highest I could get to POST was 260.

At 19 x 260 or 4.94 GHz , I got IBT to pass 10 times. Though the result was ... interesting (a NaN ..) but all 10 were the same.
Max temp was 58°C , pretty high, but I'm on air.

Soon after IBT stopped, I started Prime 95. I got an instant BSOD !

After that, I lowered the multiplier to 18.5, ie 4.81 GHz .
IBT ran 10 passes again, this time with a more proper value. Max temp was 57°C, not much different.
After several minutes of idling, I started Prime 95. Several threads stopped within seconds.

FYI my latest BIOS settings are :

CPU clock ratio X18.5 4810
Northbridge freq x8 2080
CPB off
CPU host control auto
CPU frequency 260
PCIE clock 100

HT link width auto
HT link frequency x10 2600
DRAM EOCP Disabled
set memory clock Manual
memory clock X5.33 1385

voltage auto
CPU PLL normal 2.5V
DRAM voltage normal 1.5V
DDR VTT normal 0.75V
NB voltage normal 1.10V
HT Link voltage control normal 1.2V
NB/PCIe/PLL Voltage Control normal 1.8V
CPU NB VID normal
CPU voltage +0.1V 1.4375V

Load Line Calibration auto

BIOS boot OK
Windows boot OK
IBT OK

max temp 57°C

Prime 95 stops immediately

I know I'm underclocking the RAM right now, but the next RAM multiplier up puts it at 1732 MHz and my 1600 MHz will not post. Though maybe they would if I push the RAM voltages up, I just haven't tried.
Only trying to get the CPU OC'ed for now.

The problem with the FSB earlier was that apparently the FX has a minimum frequency. Trying something as low as 1500 MHz was no good and required clearing CMOS.
When I started playing at 16x 220 it posted OK.
I just ramped up from there in 20 increments.
Hit a wall at 280 so went back to 260 .
Now I'm just working on the multiplier...

alot of people here have said that they either don't trust prime with these chips or that there is an issue between prime and these chips. and that is why most have started using IBT. Prime has shown in the past to not agree with new instructions or chips. I use IBT and haven't had one crash after it has ran successfully through atleast 10 runs. you will find that you will save alot of hair by dumping prime for this chip
post #4540 of 67357
Well, temps are down by 10C, Core temp is in the lower 50s under load, but I do think my motherboard is dying on me. System's up and running fine for 5 mins Then the monitors lose signal, keyboard, mouse and the ethernet stops working. Power button and reset button won't work either. Have to shut it down via the PSU. Maybe I accidentaly nudged the VRM heatsink,. If I have the PC off for a few mins, it starts up again..

Will try to reseat the NB and VRM heatsinks..

Strange in so many ways Might be the PSU as well..

Off to town to pick up some parts.
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Oxygène
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