FX-55 Topping Out at 2.8ghz

[Stokes]

I'm pretty sure there isnt any solution to this, just posting my results.

messing around with different multipliers and fsb, the best I can get for prime95 is 2.8ghz. I've tried voltages from stock all the way up to 1.6vcore, and haven't been able to gain anything more in stability allowing me to get more out of the chip... Temperatures aren't a problem at all as I have a water cooling setup and its keeping the cheap around 45c load max stock voltage, but like I said, putting it up to 1.55 isn't allowing me to do anything more.

Any ideas? I think this is basically it. Little disappointed in the overclocking, but its something.

 

[Thor86]

Ocing is luck of the draw and it looks like you've found its wall.

One last thing, have you tried lower memory ratio/multi?

 

[akshayt]

normally I don't think FX series oc well.

 

[Skitzer]

I can only get 2.9GHz with my FX 55 no matter what voltage, HTT or divider I throw at it. (Air cooled)
My KACAE San Diego will run 3.190 at 1.6v Prime stable (same setup) ...... go figure.
Like Thor86 says, it's the luck of the draw.

 

[gpgofast]

My FX-55 will easily go 3.1GHz with just a bump in multiplier and bumping stock voltage to 1.475v. I guess I got a good one...GP

 

[formulav8]

I got a OEM and Retail FX55 and neither of them will do 3ghz at stock voltage. I even tried one with a 1.55 voltage and still wouldn't be stable at 3ghz. So, don't feel bad, I have 2x that can't do the 3ghz mark.


Jason

 

[TanisHalfElven]

Originally posted by: akshayt
normally I don't think FX series oc well.

WHAT. where'd you get that from ?

 

[tcG]

The silicon itself usually does not OC as well as something like an Opteron...

The only reason people think they OC so well is because they have an unlocked multiplier, meaning you can overclock it with garbage RAM and still run a 1:1 ratio.

 

[TanisHalfElven]

Originally posted by: tcG
The silicon itself usually does not OC as well as something like an Opteron...

The only reason people think they OC so well is because they have an unlocked multiplier, meaning you can overclock it with garbage RAM and still run a 1:1 ratio.

the whole opteron are better OC'ers is nonsense anyway. there are good opterons and there are bad ones. i have a bad one that can't even reach 2.6. some have good ones that go to 3 on stock volts. same applies to

 

[tcG]

Originally posted by: tanishalfelven

Originally posted by: tcG
The silicon itself usually does not OC as well as something like an Opteron...

The only reason people think they OC so well is because they have an unlocked multiplier, meaning you can overclock it with garbage RAM and still run a 1:1 ratio.

the whole opteron are better OC'ers is nonsense anyway. there are good opterons and there are bad ones. i have a bad one that can't even reach 2.6. some have good ones that go to 3 on stock volts. same applies to

Of course there are bad ones and there are good ones- the rule applies for pretty much anything that can be OC'ed.

The fact remains that Opterons are based off of silicon that has passed the test to be used in SERVERS... servers that demand rock solid stability. Opterons almost always OC better than your regular X2.

 

[Zap]

Originally posted by: tanishalfelven
the whole opteron are better OC'ers is nonsense anyway. there are good opterons and there are bad ones. i have a bad one that can't even reach 2.6.

I had a terrible Opteron 144, would barely hit 2.2GHz-ish, while two others were 2.7GHz+ on same hardware (testing on same mobo/RAM/PSU). When I mentioned it here, people bashed me saying I was using the wrong hardware or didn't know what I was doing. Overclocking is always YMMV.

 

[buzzsaw13]

Originally posted by: akshayt
normally I don't think FX series oc well.

Wow, you must really not know what you're talking about. People bought FX series for the unlocked multiplier and to set world records on overclocking.

 

[hennethannun]

I think that when he said FXs tend not to OC too well he means that since FX chips generally represent the top-of-the-line performance for whatever time they were released, there is generally not as much headroom for FX chips as for mid or low-end parts.

The A64s all tend to top out between 2.8 and 3.0 ghz (on air). So a 3000+ that runs at 1.8ghz has a better chance of getting a 50% OC than an FX-55 that runs at 2.6ghz.

Unlocked multipliers are great, but on the whole, the FXs start out so close to the OC "wall" that they can never oc as impressively as the low end parts.

 

[Sunrise089]

Originally posted by: hennethannun
I think that when he said FXs tend not to OC too well he means that since FX chips generally represent the top-of-the-line performance for whatever time they were released, there is generally not as much headroom for FX chips as for mid or low-end parts.

The A64s all tend to top out between 2.8 and 3.0 ghz (on air). So a 3000+ that runs at 1.8ghz has a better chance of getting a 50% OC than an FX-55 that runs at 2.6ghz.

Unlocked multipliers are great, but on the whole, the FXs start out so close to the OC "wall" that they can never oc as impressively as the low end parts.

You are correct sir, as far as percentages go. Still, if I had to try to hit 3.0ghz on an AMD part, I would wanr an FX, then an Opteron, then an A64.

 

[fmj7six2]

I haven't tried to push my FX-55 that much. I just changed the multiplier to 14 and it runs 2.8 great, 36c same as at 2.6ghz. I will try for 3ghz next.

 

[Mucker]

My experience:

FX: 300 Mhz OC (1 cpu)
A64: 200 - 500 MHz OC (7 cpu's)
Opteron: 700 - 1000 MHz OC (7 cpu's)

I still believe the Opty 146 is the best value single core around......