recommendations on 2.4C overclock???

[absolom]

what should my basic settings be for a 2.4C on the newest Abit board, the something 7???

my friends has got the newest abit board, some buffalo pc3200 memory, and a good power supply

what should his vcore and vdimm be at?

it's stable right now at stock memory timings and stock vcore running a 2.9 ghZ, but i would like to get over 3 out of it

any suggestions?

by the way, he's scoring over 17000 3d marks in 01 with a 9800 pro!

 

[FPSguy]

Have you tried 3GHz at stock voltages? Lots of people get to 3GHz and above at stock settings.

The specs for the Buffalo RAM say 2.5V - 2.7V. So, if the memory is holding you back you can go to at least 2.7V and you can probably go to 2.8V (but any overvolting is at your/his risk ...).

I would see how high the 2.4C will go at stock voltage. Then, when it's not stable, up the voltage .025 at a time until it's stable. Don't go higher than 1.7 and, really, I wouldn't run it everyday at higher than 1.65 (especially if you are using the stock HS/F).

At some point as you stretch the RAM and get the FSB over 250 with a 5:4 memory ratio, you will need to turn GAT from auto-auto-auto-auto-auto to auto-normal-auto-disabled-disabled, and you may need to relax the memory timings as well.

If you haven't updated the BIOS to the latest version, your probably want to do that as well.

 

[absolom]

that's what i was wondering, what memory setting should i use, i was at 3.0 exactly with the memory at 5:4 and no other setting changed and his comp crashed a minute or two into 3dmark 2001, on the other hand, at 2.88ghZ, and 5:4, it was prime 95 stable for several hours, how much should i up the voltage to get a stable 3.0 or higher???

 

[FPSguy]

It all depends on your particular chip. Mine needs 1.575 to hit 3GHz. My memory runs at 2.8V. You might try his at 2.7. You are within spec. on the memory speed, though, so that shouldn't be an issue.

If those settings don't do it, loosen the memory timings and/or set GAT to auto-normal-auto-disabled-disabled.

 

[oldfart]

I always do CPU first, them mem. If you are trying to overclock without knowing if you are hitting a CPU or mem limit, you can go around in circles.

Since CPU speed is WAY more important than mem, do that first. Set your mem for 3:2, and slowest timings, 2.8V all GAT = auto. PSB = 800. That should run no matter what.

Now bump up your FSB and Vcore and see where the CPU will go. Once you have that figured out, go back and set up the memory.

 

[RunningUppercut]

Interesting responses. My 2.4c runs @ 3.0 on Auto VCore and 5:4 divide on my DDR400, with 1.75 volts at 2-2-2-5 timing.

Rock solid stable. I can't run at 3.2 stable. Prime failes within 2 minutes.

 

[absolom]

anybody else?

 

[Slammy1]

Originally posted by: oldfart
I always do CPU first, them mem. If you are trying to overclock without knowing if you are hitting a CPU or mem limit, you can go around in circles.

Since CPU speed is WAY more important than mem, do that first. Set your mem for 3:2, and slowest timings, 2.8V all GAT = auto. PSB = 800. That should run no matter what.

Now bump up your FSB and Vcore and see where the CPU will go. Once you have that figured out, go back and set up the memory.

This is the correct response. Go CPU, then memory frequency, then GAT settings, then tiimings. The last 2 could be done in reverse order. Keep you AGP/PCI bus locked, HD and video optimization is separate but related. That scheme will take you really close to your optimum overclock, but you'll need to map around your max to get the most out of your system (change settings slightly and benchmark).

 

[tw1164]

I saw that newegg has 2.6c at about the same price as 2.4c, will a 2.6c OC as well as a 2.4...

 

[lordtyranus2]

What are GAT settings? I also use this order (cpu, memory speed, memory timings), but I don't know what GAT settings are.

 

[Antisocial Virge]

I have a Abit IC7 max3 and a epox 4pda. Using the same processor, heatsink and ram my 2.4c took less voltage and overclocked higher on the Abit board. The Epox 4pda and my second 2.4c is going in the wifes machine

 

[FPSguy]

Originally posted by: tw1164
I saw that newegg has 2.6c at about the same price as 2.4c, will a 2.6c OC as well as a 2.4...

According to Overclockers.com, the average overclock for a 2.6C is higher than the average overclock for a 2.4C. Plus, you don't need as fast RAM to overclock the 2.6C. And, to top it all off, the 2.6C is cheaper than the 2.4C at newegg right now.

Also, if you are following oldfart's overclocking methodology, just be aware that once you cross a 250FSB with the newer ABit motherboards, you may experience RAM-related problems even if your RAM is underclocked. If you have the wrong RAM chips (according to some threads, DIMMs made with Winbond CH-5 chips are the problem), you may experience problems above 250FSB with any RAM ratio other than 1:1, even if your RAM is not running at full speed.

GAT is ABit's RAM acceleration technology. I think it operates by tightening your RAM timings. It's an option in the ABit BIOS. As you start to push your RAM the tight GAT timings can cause problems.

 

[lordtyranus2]

GAT is ABit's RAM acceleration technology. I think it operates by tightening your RAM timings. It's an option in the ABit BIOS. As you start to push your RAM the tight GAT timings can cause problems.

Thanks. I didn't realize it was Abit specific.