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2FSB increase = from stable, to POST fail. Athlon II 620 + GA-MA770T-UD3P -

1955 Views 40 Replies 8 Participants Last post by  RideZiLightning
Hi,

Like the title says, I'm attempting to overclock the processor but am noticing something weird. My setup is listed in my sig.

Currently, my FSB is set to 268MHz, VCore to 1.375V, 13x multiplier, 8x HT and NB. Prime95 tested this overnight ~6 hrs and no errors. Max CPU temp reached 38C.
Now when I try to increase the FSB to 270MHz, my computer fails to POST. I'm not sure why a 2MHz increase is the difference between stability and instability. Seems like a very small increase. So I suspect that maybe it is something I am missing. And I have a nagging feeling that it has something to do with the memory.

Here are my BIOS settings:

CPU Clock Ratio: 13X (3484GHz)
CPU NorthBridge Freq.: x8 (2144MHz)
CPU Frequency(MHz): 268
PCIE Clock(MHz): 100
HT Link Frequency: 1.6GHz (x8)
Memory Clock: x5.33 (1428MHz)

DRAM Configuration:
DCTs Mode: Unganged
CAS# Latency: 9T
RAS to CAS R/W Delay: 9T
Row Precharge Time: 9T
Minimum RAS Active Time: 24T
1T/2T Command Timing: 2T
TwTr Command Delay: 5T
Trfc0 for DIMM1: 90ns
Trfc2 for DIMM2: 110ns
Trfc1 for DIMM3: 90ns
Trfc3 for DIMM4: 110ns
Write Recovery Time: 10T
Precharge Time: 5T
Row Cycle Time: 33T
RAS to RAS Delay: 4T
Bank Interleaving: Enabled
Channel interleave: Enabled

Voltage:
DRAM Voltage Control: Normal (1.600V)
DDR VTT Voltage Control: Normal (0.900V)
NB Voltage Control: Normal (1.100V)
SB/HT Voltage Control: Normal (1.200V)
NB PCIE Voltage Control: Normal (1.800V)
CPU NB VID Control: Normal
CPU Voltage Control: +0.100V (1.3750V)
Normal CPU VCore: 1.2750V

Anyone have any suggestions as to why it may be behaving as such? Appreciate any info/guidance.
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1 - 20 of 41 Posts
thast easy. its very normal actually..bump cpu volt to 1.4 now it'll work. at every increments of FSB there needs to be a volt increase..thats how oc'ing works. so..clear cmos..and apply those settings once again with 1.4V now. =]
2
Quote:


Originally Posted by elito
View Post

thast easy. its very normal actually..bump cpu volt to 1.4 now it'll work. at every increments of FSB there needs to be a volt increase..thats how oc'ing works. so..clear cmos..and apply those settings once again with 1.4V now. =]

tried it, same problem
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wouldnt have this problem with a BE...

is the HT lin on auto? I wouldnt personally mess with the HT

bump the NB freq. and voltage up a bit

I dont know DDR3 timings, double check if they are good
Quote:

Originally Posted by youra6 View Post
wouldnt have this problem with a BE...

is the HT lin on auto? I wouldnt personally mess with the HT

bump the NB freq. and voltage up a bit

I dont know DDR3 timings, double check if they are good
hehe, BE wasnt in my price-range for a quad core!
HT Link is @ x8 multiplier. Keeping it below 2GHz. Auto seems to bring it too high with a FSB increase.
Will try bumping the NB Freq up higher, dropped it a bit figuring it might make things more stable.
When you mention voltage, were you talking about NB voltage? If so, I got "CPU NB VID Control" and "NB Voltage Control" in BIOS, which one would I be increasing?

TIA
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Quote:

Originally Posted by youra6 View Post
wouldnt have this problem with a BE...

is the HT lin on auto? I wouldnt personally mess with the HT

bump the NB freq. and voltage up a bit

I dont know DDR3 timings, double check if they are good
what matters if its a BE or NON BE..ppl are getting the impression that BE's are better than NON BE chips..and that is wrong.. every cpu chip has its limit so you're bound to hit a wall somewhere - once you do..you try to bump the least voltage needed at a time..to get past/ stable that wall..then you'll hit another wall which will require more volt bumps.. I.E. - my 720 - its a BE, but its limit is 3.7GHZ on x4 and 3.8 on x3 i believe? its still gonna be those limits whether i clock by fsb or multi. and i use fsb to clock btw. doesnt earn me any mileage. BE chips just makes OC'ING EASIER with the ability to just use multi instead, but even with just multi upperage - volt increase is a must anyway..
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Quote:

Originally Posted by avin View Post
hehe, BE wasnt in my price-range for a quad core!
HT Link is @ x8 multiplier. Keeping it below 2GHz. Auto seems to bring it too high with a FSB increase.
Will try bumping the NB Freq up higher, dropped it a bit figuring it might make things more stable.
When you mention voltage, were you talking about NB voltage? If so, I got "CPU NB VID Control" and "NB Voltage Control" in BIOS, which one would I be increasing?

TIA
ok..1.4 doesnt work. thats fine, 1.425 now..its the only way..i remember with my own opty165 chip, inorder for me to go from 2.7-2.8 it needed a .75mv but from 1.8-2.7 it was on stock..so you get the idea now..
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it would be the NB voltage control

NB VID = Voltage for integrated memory controller, increased when overclocking memory.

NB Voltage = Voltage supplied to the north bridge chipset (790FX/790X/etc.) which controls the PCIE lanes, not usually increased in values.

I personally wouldnt raise the NB VID past 1.375v. Im not sure how it is for a stock 620 tho

http://www.**************/forum/show...07/index.html?

this can explain a few things
Quote:

Originally Posted by elito View Post
what matters if its a BE or NON BE..ppl are getting the impression that BE's are better than NON BE chips..and that is wrong.. every cpu chip has its limit so you're bound to hit a wall somewhere - once you do..you try to bump the least voltage needed at a time..to get past/ stable that wall..then you'll hit another wall which will require more volt bumps.. I.E. - my 720 - its a BE, but its limit is 3.7GHZ on x4 and 3.8 on x3 i believe? its still gonna be those limits whether i clock by fsb or multi. and i use fsb to clock btw. doesnt earn me any mileage. BE chips just makes OC'ING EASIER with the ability to just use multi instead, but even with just multi upperage - volt increase is a must anyway..
find me a 945 that goes past 4.0ghz on air and I will shutup.

Im not saying its better, Its just harder to OC a non BE chip. Where are you getting your facts?
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2
Quote:

Originally Posted by elito View Post
ok..1.4 doesnt work. thats fine, 1.425 now..its the only way..i remember with my own opty165 chip, inorder for me to go from 2.7-2.8 it needed a .75mv but from 1.8-2.7 it was on stock..so you get the idea now..
k,
tried up to 1.475, same issue

it freezes and restarts before the memory is read during the startup procedure.. ie in starting, i see the bios manufacturer, and CPU type. next normally i see it scan through available memory but it freezes and restarts before this, and loops..
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2
Quote:


Originally Posted by youra6
View Post

it would be the NB voltage control

NB VID = Voltage for integrated memory controller, increased when overclocking memory.

NB Voltage = Voltage supplied to the north bridge chipset (790FX/790X/etc.) which controls the PCIE lanes, not usually increased in values.

I personally wouldnt raise the NB VID past 1.375v. Im not sure how it is for a stock 620 tho

http://www.**************/forum/show...07/index.html?

this can explain a few things

tried a 0.04V increase on NB, same issue
cannot visit the link you posted cuz its starred out

would a NB voltage increase make a difference since NB Freq is set below 2000 (it ran at 2144 fine w/ stock voltages).
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2
Quote:


Originally Posted by avin
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tried a 0.04V increase on NB, same issue
cannot visit the link you posted cuz its starred out

would a NB voltage increase make a difference since NB Freq is set below 2000 (it ran at 2144 fine w/ stock voltages).

no it wouldnt. bump vcore to 1.45

and if that doesnt work, bump NB voltage

if that doesnt work, bump RAM voltages

PS: Elito, found a 945 past 4.0ghz on air yet? I didnt think so
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Quote:


Originally Posted by youra6
View Post

no it wouldnt. bump vcore to 1.45

and if that doesnt work, bump NB voltage

if that doesnt work, bump RAM voltages

tried all 3, goes a bit further in bootup sequence but still fails POST
NB @ 1.160 from 1.100 default, DRAM @ 1.700 from 1.600 default, and VCore at 1.45
i just have this nagging doubt it has summin to do w/ the ram timings..
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Quote:


Originally Posted by youra6
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find me a 945 that goes past 4.0ghz on air and I will shutup.

Im not saying its better, Its just harder to OC a non BE chip. Where are you getting your facts?

no buddy, WHERE ARE YOU getting your facts from?. and exactly.. a 945 will not get pass 4.ghz..WHY? because its got a LIMIT. every chip does..and you indeed made it sound like BE chips were better when u stated "should've gone with a BE" i simply explained that BE chips were easier to OC because it enabled another option with the usage of multi.

++and you know, youre hilarious, pls explain to me - what does it prove if there was a 945 that hits 4ghz on air? it'll prove that the step up - 955 is a better chip because its got a higher BASECLOCK and a BE CHIP? or that the 955's OC potential is higher cus its BE chip? w/e it is, dont forget to add back the 200mhz back to the 945..cus the 955 does have a 3.2 baseclock..so i honestly dont see what youre trying to show me here..
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3
Quote:


Originally Posted by youra6
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You will have to do some research on DDR3 timmings
I dont them too well

do you think timings could be the issue though? or is it just me :S
found some articles on mem timings and gonna do some reading on it
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It could be your memory timings and your NB frequency.
Quote:


Originally Posted by elito
View Post

no buddy, WHERE ARE YOU getting your facts from?. and exactly.. a 945 will not get pass 4.ghz..WHY? because its got a LIMIT. every chip does..and you indeed made it sound like BE chips were better when u stated "should've gone with a BE" i simply explained that BE chips were easier to OC because it enabled another option with the usage of multi.

++and you know, youre hilarious, pls explain to me - what does it prove if there was a 945 that hits 4ghz on air? it'll prove that the step up - 955 is a better chip because its got a higher BASECLOCK and a BE CHIP? or that the 955's OC potential is higher cus its BE chip? w/e it is, dont forget to add back the 200mhz back to the 945..cus the 955 does have a 3.2 baseclock..so i honestly dont see what youre trying to show me here..

Ugh you just dont get it....

You just disproved your own argument by those words i bold that YOU SAID.

The 955 is better because it can overclock higher period. Are you saying the X3 720 cant overclock to 3.8, even though its stock clock is 200 mhz lower than even the 945????

I have seen many 940's overclock past 4 on air it has the same base clock

Yet the 945 is as expensive as a 955 yet cant overclock as high as the 940...

I never said it was "better" I only said it OC better. Unless you go online and prove me wrong otherwise, I will stand by what I say. And please dont put words in my mouth. I never said it was better

This argument is fruitless; you should look at a good look at your own argument before criticizing others

And to OP, sorry if it seemed that we have trolled on the subject. I wont be diverging the topic anymore
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Quote:


Originally Posted by youra6
View Post

Ugh you just dont get it....

You just disproved your own argument by those words i bold that YOU SAID.

The 955 is better because it can overclock higher period. Are you saying the X3 720 cant overclock to 3.8, even though its stock clock is 200 mhz lower than even the 945????

I have seen many 940's overclock past 4 on air it has the same base clock

Yet the 945 is as expensive as a 955 yet cant overclock as high as the 940...

I never said it was "better" I only said it OC better. Unless you go online and prove me wrong otherwise, I will stand by what I say. And please dont put words in my mouth. I never said it was better

This argument is fruitless; you should look at a good look at your own argument before criticizing others

And to OP, sorry if it seemed that we have trolled on the subject. I wont be diverging the topic anymore

you simply can't read right..that was more of a "question" rather than a statement..but ok.
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hey all, once again, thanks for your help.

little update:
I discovered that taking out one of my sticks of RAM allowed me to up the FSB up to 272. Any increase past that point (ex 274) leads to the same POST failure, even after voltage bumps. If I try the other stick, it does not past POST. Currently memtest'ing both sticks individually to see if any errors. Tested in the past for ~20 loops without any errors but was tested as a pair.

Any further suggestions?
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