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Am I limited in overclocking?

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Über~PhLuBB

Jedi Knight Senior
Joined
May 9, 2001
Location
Portland, OR
I always used to think the more you pay, the more you get, so naturally, when I bought Crucial PC133, I went for one of the most expensive sticks, which had ECC. Is this limiting my overclocking? Currently (I dont have a GFD, so i cant change the multiplier) I'm running at 105MHz (PCI + FSB = PC133), My Athlon 950 is at 1GHz, but virtually anything higher us very unstable. If I disable ECC, would I be able to overclock more?
 

Lt. Max

Member
Joined
Jan 28, 2002
Location
Seattle, but im Estonian
definately, dont get ecc nemore unless u run a server, they slow you down and are not neccessary for normal ppl... so what mobo u use? that might limit you too if its a piecer
 
OP
Über~PhLuBB

Über~PhLuBB

Jedi Knight Senior
Joined
May 9, 2001
Location
Portland, OR
Lt. Max said:
definately, dont get ecc nemore unless u run a server, they slow you down and are not neccessary for normal ppl... so what mobo u use? that might limit you too if its a piecer

It's an Abit K7A. If I just turn off ECC in BIOS, would that help at all?
 

Lt. Max

Member
Joined
Jan 28, 2002
Location
Seattle, but im Estonian
cas 2 will hold you back too...but it depends if u wanna lose cas 2, iits about 1-2% extra performance, but u might get better wit the higher fsb.. i dunno.. try. did the ecc turn off help?
 
OP
Über~PhLuBB

Über~PhLuBB

Jedi Knight Senior
Joined
May 9, 2001
Location
Portland, OR
Ambient case temp is 23C, CPU is at 48 under [email protected] load measured with a thermocouple placed on the side of the die. It's never been 48 before, usually it's around 43-45 under full load. I'll have to investigate that.

As for the ECC and what not, it didnt work. Still wont go past 110 no matter what, and even 107 isn't feeling cooperative.
 

Jon

Just Another Retired Moderator
Joined
Dec 19, 2000
Location
Lawrenceville, GA
ECC is not good for overclocking at all. Some get a little lucky with it but does not compare with unbuffered at all. Even turning off ECC in the BIOS doesn't change the physical makeup of the chip and that's the main reason it doesn't overclock very well. Even though ECC isn't being used, the registers and extra bit checking hardware is still built into the chip and hinders higher than rated frequncies.

Best bet is to ditch it and go with some unbuffered if you want something to overclock decently with.

It was necessary for me to get registered ECC with my MPX board and I was able to get 145MHz out of it (PC2100). I considered myself very lucky.

If you don't need ECC, don't get ECC. It serves a specific purpose and that purpose doesn't include overclocking at all.