Finally, a decent overclock!

[xSeongminx]

Well, I finally figured out how to squeeze the !@#$ out of my processor. It took me a few hours of tweaking, but it was worth it. I managed to hit 300HTT at a multiplier of 8, resulting in a Core Speed of 2410 (FSB is at 301.3 in CPU-Z) at 1.616 volts. I was just curious, is this anything to be happy about?

I was also wondering, what's the difference between 290 * 8.5 and 300 * 8 except for the 65mhz? Is it better to run 290 * 8.5 as opposed to 300 * 8?

EDIT: This is on a stock HSF (bite me), but I'm going to be sticking my XP-90 with a good fan on it pretty soon.

 

[BlueWeasel]

CPU speed is king, but generally, a higher HTT/FSB is better. The difference between 290 vs. 300 is minimal, though - just pick the multiplier and HTT that gives you the highest speed in Mhz.

 

[xSeongminx]

Well, I'm running it at 320 x 8 right now... No smoke yet. +

EDIT: Based on Sisoft Sandra, it's at FX-55 speeds...

 

[Zap]

Whether you go lower multiplier and higher HTT or higher multiplier and lower HTT for the same terminal CPU speed depends... what's your RAM at on those two settings? It's not as important for socket 939, but you're on socket 754 so you have to pay a bit more attention to that. I'd say if you're getting around the same CPU speed, then whichever setting gets you a higher RAM speed (or lower latencies).

IMO there was something special about those 2800+ Newcastles. The one I had (in the right board) would POST at 2.7GHz - a full 9x300. Of course it was an immediate lockup after POST but it was exciting to see. The only other socket 754 CPU that I've come across that can POST that high (and higher) is this Sempron 3300+ E3 core that I still have. With good cooling it is actually stable at 2.75GHz. None of the other socket 754 CPUs I've had were good for stable operation above about 2.5GHz or even suicide POST above around 2.6GHz. I've had a couple of Newcastles, several Paris and several Palermo.

The board is pretty important and you've got (from what I hear) a good one. My "good" boards were an Epox 8KDA3I (something like that, no longer have it) and Biostar Tforce6100.

 

[SonicIce]

you're lucky. my 2800 only goes to about 2.2

 

[xSeongminx]

Well, mine can post at 2.7Ghz+ but it won't go into Windows (more voltage maybe?!? It posts at 1.625 volts, would it be fine to push more into it?) I can do everything at 2.62 but it's not Prime stable, and when I say that it's not, it crashs like 1 min into the test. 310 x 8 is ok but with 1.625 volts. I haven't tried 320 x 8 at 1.65 volts, as that's pretty excessive... If it's fine, I would be willing to do a 1.675 suicide run and see what I can come up with.

I just found out, that my computer is completely stable at 300 x 8 with 1.5 (stock) volts (jumps to 1.504 under 100% load).

Also, my memory is at 219 mhz (KVR) at 3-3-3-3 timings when I'm running the computer at 300 HTT, so my performance is being held back here. Not much to say since I spent 20$ on the ram...

 

[Kromis]

Hmm...

Isn't a CPU with 250 HTT * 4x Multiplier faster than a CPU with 200 HTT * 5x Mulitplier?

I think there is a difference. But I don't know enough about CPUs to explain. 🙂

Or maybe that's only for Intel...since the HTT is integrated on the CPU.

 

[Zap]

It is faster, but barely. With A64, the CPU speed is king, followed by dual channel versus single channel and amount of cache. Then you have latency and RAM speed. Things like HTT speed, etc bring up the rear. Anyways, just remember that if you can overclock 10% more, you make up for slower RAM and other stuff (usually, depends on benchmark).

 

[xSeongminx]

Btw, how do I get enable dual channel on my mobo?!? I can't seem to find an option for it.

 

[customcoms]

Thats an S754 board and processor...they are single channel only (the memory controller is in the processor and it only supports single channel operation; as such the boards are designed for single channel DDR aswell; dropping an imaginary dual channel S754 processor in wouldn't work either; thats why AMD released S939 and now AM2).