Overclocking - Want that last 100MHz

[tgstyle]

Not that 100Mhz will make that much of a difference.

Quick run down. Opty 170 @ 2.7GHz rock solid

Multiplier @ 10*270
Ram is around 222MHz
HT @ 1350

Had to up the voltage to 1.4 to get it stable.

Mobo is a A8R32-MVP
Ram is OCZ Platinum 2x1GB PC3200.

If it is at 10*280 system boots fine and is stable on the 2nd core - 1st core always bombs out no matter what I try. Even upping the voltage on the proc does not help.

I changed the HT to x4 at that speed, even though it worked at 1400. Nice thing about the ATi chipset =)

So is this just the limit of my proc? Any suggestions on how to get that last 100MHz?

So should I just call it good at 2.7?

Thanks for your input

 

[BaronMatrix]

Not that 100Mhz will make that much of a difference.

Quick run down. Opty 170 @ 2.7GHz rock solid

Multiplier @ 10*270
Ram is around 222MHz
HT @ 1350

Had to up the voltage to 1.4 to get it stable.

Mobo is a A8R32-MVP
Ram is OCZ Platinum 2x1GB PC3200.

If it is at 10*280 system boots fine and is stable on the 2nd core - 1st core always bombs out no matter what I try. Even upping the voltage on the proc does not help.

I changed the HT to x4 at that speed, even though it worked at 1400. Nice thing about the ATi chipset =)

So is this just the limit of my proc? Any suggestions on how to get that last 100MHz?

So should I just call it good at 2.7?

Thanks for your input

Since every chip OCs differently I wouldbe happy at 2.7GHz. At that speed you're pretty high up the perf chain.

 

[dragonsprayer]

you know that at some point a higher fsb can atcually lower performance - run tests too see whats it worth.

 

[GlacierFreeze]

There is an "Overclocking" section on this forum.

Anyways, you're running PC3200 RAM and have it running at 222MHz. That's your problem. Up your bus to 280, use another RAM divider, and give it more juice.

 

[m25]

As you put it, it looks like a motherboard ceiling; HTT @ 1350 is too much for a stable OC so you should find a way to set that multi to 4x or even 3x (still won't hurt performance). Try updating the bios because it might have a fix to allow you change the multi.
EDIT: And like GlacierFreeze said; the RAM is also too running high if that is standard DDR 400.

 

[tgstyle]

The ram is stable at 222MHz and system stable at 2.7GHz - rock solid no issues in any ram/cpu tests (HTT at 1350). When I up the multiplier to 10*280 I drop the ram divider which is below 200MHz. These mobos can do up to 1500MHz HTT - gives no benefit but atleast they can do it. Just to be safe though when I try 10*280 I drop it to 4x which puts it at 1120MHz. System is workable at 2.8GHz and stable on 1 core but not the other no matter how much juice I give it. I think it is just the limitation of the chip. It doesn't want to go any higher =)

 

[Dahak]

Too true my friend.I've come across that same issue several times before.Wonder why the FSB hinders performance after a certian speed.It really sucks because there is more performance to get out of it but ya,it seems to be hindered by the fsb.Anyways,just saying I know of the fsb issues.Later.

Dahak

AMD X2-4400+@2.6 S-939
EVGA NF4 SLI MB
2X EVGA 7950GT KO IN SLI
4X 512MB CRUCIAL BALLISTIX DDR500
WD300GIG HD
ACER 22IN WIDESCREEN LCD 1600X1200
THERMALTAKE TOUGHPOWER 850WATT PSU
COOLERMASTER MINI R120
3DMARK05 13,471

 

[1Tanker]

Too true my friend.I've come across that same issue several times before.Wonder why the FSB hinders performance after a certian speed.It really sucks because there is more performance to get out of it but ya,it seems to be hindered by the fsb.Anyways,just saying I know of the fsb issues.Later.

Dahak

AMD X2-4400+@2.6 S-939
EVGA NF4 SLI MB
2X EVGA 7950GT KO IN SLI
4X 512MB CRUCIAL BALLISTIX DDR500
WD300GIG HD
ACER 22IN WIDESCREEN LCD 1600X1200
THERMALTAKE TOUGHPOWER 850WATT PSU
COOLERMASTER MINI R120
3DMARK05 13,471

It's more likely, having to loosen RAM timings at a certain "FSB" than the "FSB" itself, that's dropping performance.

@ OP. As an avid overclocker, i understand how important those last few MHz can be, to your churning mind. I would try dropping HT to 3x, won't affect performance much. Also, your RAM should be good for much more than 222 MHz. You may just have to loosen the timings a touch...to move onward. GL

 

[Dahak]

TY for your advice.I will give it a try because I was able to get it to 2.9ghz,just not stable.I will try loosening the timings a bit.Any suggestions to what timings might be better to use???I'm not new to oc'ing,but I don't know enough about timings to make them work better.Thankyou for your help.

Dahak

AMD X2-4400+@2.6 S-939
EVGA NF4 SLI MB
2X EVGA 7950GT KO IN SLI
4X 512MB CRUCIAL BALLISTIX DDR500
WD300GIG HD
ACER 22IN WIDESCREEN LCD 1600X1200
THERMALTAKE TOUGHPOWER 850WATT PSU
COOLERMASTER MINI R120
3DMARK05 13,471

 

[GlacierFreeze]

Try 2T command rate or add 1 to the three first values of timing (ie: 2-3-3-5, try 3-4-4-5). See what happens after trying either of those.

edit... Also up the memory voltage a little bit if you can.

 

[xiaxia686]

Since the last 100MHz is extremely difficult for your processor,i suggest you keep it @ 2700Mhz.I don't think this 100Mhz can make a big change in performance,but i do know it will bring a great unstablity to your rig,so it doesn't worth.

I'm no also running my proc. @ 2700Mhz(3800+ X2) with a water cooler,and i've tried to rise it to 300*10.no matter what volt i use,this is limit still uncrackable...

 

[xiaxia686]

Well,if you only have a high Mhz but no stability,you will not get a higer benchmark than with lower clocking :lol:.In this situation ,high clocking becomes meaningless

 

[1Tanker]

Well,if you only have a high Mhz but no stability,you will not get a higer benchmark than with lower clocking :lol:.In this situation ,high clocking becomes meaningless

No I see where you are coming from, but sometimes the fun is 'getting that little extra bit', sorta 'can I do it' I think its a "Testosterone" thing. 8) It's fun to test the limits of things....most women don't "get" this concept.

 

[GlacierFreeze]

I totally agree with that.

 

[derek2006]

Same here. They thought I was weird when I tried to see how hot I could get my GPU and CPU before failure.

 

[m25]

I think its a "Testosterone" thing. Cool It's fun to test the limits of things....most women don't "get" this concept. Wink

Talking about hormones, think it's more about adrenaline; when you push the FSB/HTT, have your CPU boot at a certain speed, you have the same feeling of when you accelerate wit your car or have a tough exam

 

[tgstyle]

Yes this is it totally. At 2700 with the high ram speed it for sure will be faster then at 2800.... I just want to see if I can get it there =)