3dfx Archive - Best way to OC a cpu

sb306

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Best way to OC a cpu
17.03.10 at 09:52:57

Well I have a barton 2600 with 768mb of ram. Which way do you guys think would be the best way to overclock it. I can run 198fsb with a 9.5x multiplier(1881mhz). Or, I can run 182fsb with a 11x multiplier(2002mhz).

The benchmarks that I've did seem fairly close. I originally thought I would go with the highest fsb I could. But then I thought about the fact that the only thing that I run on this computer is maybe 2001 and earlier, so the ram I have should be much more than anything that I run really needs.

I thought maybe running the lower fsb with a higher multiplier might run more stable and be easier on the sound and agp video card(5500). What do you guys think?

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exxe God Member Offline ^^ Posts: 1316 germany	Re: Best way to OC a cpu Reply #1 - 17.03.10 at 11:29:59 rise the FSB is faster because is increase the Bandwith between CPU and the Memory but on most Mainboard its also overclock the AGP and PCI Bus
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NitroX infinity YaBB Moderator Offline Posts: 1936 The Netherlands Gender:	Re: Best way to OC a cpu Reply #2 - 17.03.10 at 12:43:31 Which Barton 2600+ do you have? The one with 133MHz, 166MHz or 200MHz FSB?
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ultima God Member Offline Always searching Posts: 880 The Netherlands Gender:	Re: Best way to OC a cpu Reply #3 - 17.03.10 at 14:49:05 actually, there is only 1 Barton 2600+ and that is with 333(166DDR) FSB. The 2600+ with 266FSB is a thoroughbred and a 2600+ with 400Mhz doesn't exist, or at least, I've never heard of one and I worked at a pc production plant for years, I've seen all variations of AthlonXP cpus.
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NitroX infinity YaBB Moderator Offline Posts: 1936 The Netherlands Gender:	Re: Best way to OC a cpu Reply #4 - 17.03.10 at 15:56:44 http://en.wikipedia.org/wiki/List_of_AMD_Athlon_XP_microprocessors#Athlon_XP_.22... You'll notice 3 Bartons with a 2600+ rating, each with a different FSB.
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Maf Full Member Offline I Love YaBB 2! Posts: 106	Re: Best way to OC a cpu Reply #5 - 17.03.10 at 16:36:01 NitroX infinity wrote on 17.03.10 at 15:56:44: http://en.wikipedia.org/wiki/List_of_AMD_Athlon_XP_microprocessors#Athlon_XP_.22... You'll notice 3 Bartons with a 2600+ rating, each with a different FSB. But the other two are marked as "released with very limited quantities, most probably an OEM-only CPU."
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NitroX infinity

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Re: Best way to OC a cpu
Reply #6 - 17.03.10 at 17:12:28

True, but despite that he could have one of those.

Anyway, I'd go for a 200MHz FSB if possible and a multiplier of 10. That's not much when it comes to overclocking but it would allow you to run PC3200 memory at a 1:1 ratio with the FSB.

And if your motherboard can handle a 200MHz FSB, you can probably overclock to 2400MHz (multiplier of 12). I would not recommend doing that at once, rather take it in steps by increasing the multiplier by half a point or rather start with a multiplier of 12 and a 166MHz FSB and increase that in steps of 5 or 10MHz to 200MHz. Do not forget to test for stability.

I hope your heatsink/fan combo can handle it.

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oldskool Senior Member Offline I Love 3dfx Posts: 398 uk Gender:	Re: Best way to OC a cpu Reply #7 - 17.03.10 at 17:32:39 If you have a stable 166mhz + why not use a 333mhz processor, faster at stock and is everyone using pc3200 memmory unerclocked on ther kt33 boards (its cheaper than pc2700 )
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sb306

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Re: Best way to OC a cpu
Reply #8 - 17.03.10 at 22:06:50

Thanks for all the replies. Well, the setups that I listed are pretty much the max that I can go. Anything higher and I start getting different errors. And even if it does make it to windows, trying to run a timedemo in quake or quake 3 locks everything up. I originally thought it might be a memory problem or a video/sound card problem because of the high bus speeds. But since it locks up with either a raised fsb or a raised multiplier I'm assuming its the processor maxing out.

Or, with a 198fsb and a 9.5x multi it could be having problems with the video, sound card bus speeds getting too high. But, with the 182fsb and the 11x multi it could actually be maxing out the cpu.

I actually still have that pci network card installed. So Im going to pull that out and see if that is affecting the stability. Wink

Edit: I pulled the network card out and it had no effect. The highest I could get with a 11x multi is 183fsb. That should easily be fast enough to supply the 5500 though.

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« Last Edit: 17.03.10 at 23:09:11 by sb306 »

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NitroX infinity YaBB Moderator Offline Posts: 1936 The Netherlands Gender:	Re: Best way to OC a cpu Reply #9 - 17.03.10 at 23:19:36 Have you thought about increasing the voltage (vcore)? That might increase stability. 0.025Volts at a time if your bios allows it, otherwise the smallest increase possible. I recommend not to go above 1.85Volts.
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sb306

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Re: Best way to OC a cpu
Reply #10 - 17.03.10 at 23:19:56

oldskool wrote on 17.03.10 at 17:32:39:

If you have a stable 166mhz + why not use a 333mhz processor, faster at stock and is everyone using pc3200 memmory unerclocked on ther kt33 boards (its cheaper than pc2700 Shocked

)

I was actually thinking of getting maybe a 2800 or a 3000 barton. But I think a 2600 is more than fast enough for what Im going to use it for. Wink

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sb306

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Re: Best way to OC a cpu
Reply #11 - 18.03.10 at 01:09:14

NitroX infinity wrote on 17.03.10 at 23:19:36:

Have you thought about increasing the voltage (vcore)? That might increase stability. 0.025Volts at a time if your bios allows it, otherwise the smallest increase possible. I recommend not to go above 1.85Volts.

Thanks for the info. Ive never adjusted the vcore before. I saw youre message so I just tried it. I actually got the fsb up to 189 with a 11multi @1.75vcore(maximum for motherboard, Stock for chip is 1.65v). But, quake 3 would crash to the desktop as soon as a timedemo started. I brought it down to 188fsb and it made it through a quake 3 timedemo. But, while playing it crashed to desktop after about 15 minutes. I tried Screamer 4x4 and it lasted about as long then crashed to desktop.

I think Ill bring it down to 187x11 @ 1.725vcore. And see how that runs everything.

As a matter of fact I just brought it down to 187x11 @ 1.75vcore and ran the Sandra Burn in for 3 cycles(it just finished) and it ran fine. Maybe Ill just leave the vcore @1.75?!?!?!

Thanks again for the info!

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oldskool Senior Member Offline I Love 3dfx Posts: 398 uk Gender:	Re: Best way to OC a cpu Reply #12 - 18.03.10 at 17:20:37 Make sure your cooling is up to the job, extra volts = extra heat
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