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Pastimes : Dream Machine ( Build your own PC ) -- Ignore unavailable to you. Want to Upgrade?

To: Zeddie88 who wrote (10483)	2/12/2000 8:27:00 PM
From: Howard R. Hansen	Read Replies (1) \| Respond to of 14778

With the Asus or Abit boards, don't I have the option of adjusting the FSB from 100MHz to 133MHz in the BIOS. Yes you do. In fact for the Asus P3B-F you can adjust the FSB, front side bus, frequency to most any frequency in the range from 66 to 150 MHz. However, here is the kicker. The P3B-F manual states "Warning frequencies above 100 MHz exceed the specification for the on board chipset and are not guaranteed to be stable". Motherboards that use a chipset of more recent vintage than the 440BX have a maximum rated FSB frequency of 133 MHz. Conclusion you can run the FSB at a higher frequency than 100 MHz but you are on your own. If that is true, does this then mean that I can run a PIII 600 (133FSB) CPU at its rated 133MHz on the Asus P3B-F board? No, for the same reason given above. There is no guarantee the P3B-F will be stable when running with at a FSB frequency of 133 MHz. I think more intriguing than the wide available range of FSB frequencies is the P3B-F allows to you to set the ratio between the CPU's internal frequency and the FSB frequency to most any value between 2 and 8. This gives you the option of buying a 500 or 550 MHz PIII, running the FSB at 100 MHz and the CPU at 750 MHz. I haven't been following the results other have obtained using the P3B-F to build an over clocked computer but it is certainly worth looking into. Here is a report from a news group from a user of an Athlon CPU and a Matrox G400. This may be another promising option for you. "I currently have an athlon 700@806 on an asus k7m rev 1.04 running fine with the g400 max. I've heard bout some others having problems but a firmware upgrade of the mb and the newest matrox drivers seem to fix the problems"

To: Zeddie88 who wrote (10483)	2/13/2000 12:59:00 PM
From: Howard R. Hansen	Read Replies (1) \| Respond to of 14778

Long Message Here are a few interesting messages I found about using a P3B-F for an over clocking platform. The messages came from an Asus news group though, so they may be slightly biased But first let me say the only variable you can adjust is the FSB, front side bus, frequency. Because all Intel CPUs come with a fixed clock multiplier the CPUs core frequency will always be directly proportional to the FSB frequency. Question number One "I've been backwards, forwards and every which way trying to decide which of these boards, Asus P3B-F or Abit BE6-II - I, to buy. I've read countless reviews on both boards and have been lurking here and in the Abit ng to help me decide. The Abit users seem to be having alot of problems with IRQ conflicts and the UTA-66 support but the reviews I've read seem to indicate the Abit as the better choice. This isn't making the decision easy :( Has anyone here any personal experiences of both boards they'd like to share?" First response to question number One. "The main advantage of the BE6 is the Ultra66 support, but U66 gives very little performance boost. The BE6-2 also has ( incremental )1MHz FSB settings, but in terms of real-word performace how much difference will, say, 113MHz make over 112? The whole thing seems pretty silly to me, but the hype sells. The BE6-2 is selling like hot-cakes at my store. As for me, I got an Asus P3B-F. Had an Abit BX6-2 and loved it. Got the Asus for the 6th PCI. Abit's Soft-Menu is far superior to Asus' attempt, but once you beat the Asus BIOS into submission it works very well. If you want real hard drive performance, forget the BE6. Get the 6-PCI Asus and throw a Promise Fastrack66 in that extra slot with a pair of matched 7,200 RPM U66 Quantum Fireball drives. That will kick a Seagate Cheetah's a$$. I know, I have one!" Second response to question number One "I've played around with both motherboards. IMHO the BE6 should only be chosen over the P3B-F if you are a hard core overclocker. The P3B-F is not as fussy with IRQs as the BE6. Also, I have a Quantum Fireball KX drive, which i've tried in both MoBos. The speed difference was not noticeable. I'd say get the P3B-F, particularly if you plan on have 4+PCI cards in your computer. Khalid." Third response to question number One "Get the ASUS, I had a BH6, and BX6 R2 that were nice, but nowhere near as nice as the P3B-F for stability and management, and as far as ATA66, I'd shy away from the Abit controller which is based on a Highpoint chipset that requires 2 irq's, which means if you're gonna use your onboard ide in addition to it you've just eaten 4 irq's just for storage. Yikes. I'm using the standard Promise Ultra66 with 3 drives attached and a mobile rack to swap primaries, and 3 cdroms attached to the onboard and it's very... um... spacious and flexible :) kb" Question number Two. "Rick>Does the Asus board P3B-f support the Pent lll 733/133??" First response to question number Two. "Yes, however it is wiser to get a 100Mhz FSB coppermine as they have higher multipliers locked into them. For instance a 600B processor is the same coppermine core, but can be run at any FSB, or at least as high as 133Mhz x 6 for 798Mhz, but a 733Mhz coppermine is locked at 5.5 X and if your system won't run 133Mhz FSB, you could end up with far lower cpu speed after paying a huge premium for the 733Mhz coppermine processor over the 600B. Lindsay, Lindsay Computer Systems, lc-sys.com" Question number Three and responses, regarding over, clocking a 650 MHz PIII "Subject: Re: P3 650 256k secc2 on P3b-F On 11 Feb 2000 05:04:30 GMT, Overclockin wrote: >650 @ 806/124 defult voltage. No problems. Yes, but 124Mhz seems to be the limit for the 650E. Apparently the L2 full speed cache cannot sustain speeds much over 800Mhz. Rick Lindsay, Lindsay Computer Systems, ttp://www.lc-sys.com" ">Any extra cooling fans required at this speed, or does the tighter microns of the Coppermine keep it cool enough? The stock heatsink/fan Intel provides with their boxed processors does a very good job on the coppermines. Rick Lindsay, Lindsay Computer Systems, lc-sys.com" ">Yes, but 124Mhz seems to be the limit for the 650E. >Apparently the L2 full speed cache cannot sustain speeds >much over 800Mhz. Very true for me at least. I have a 650E at 806mhz(124 mhz FSB)at default voltage that has been rock solid(not a single crash) for about 2.5 months. It will not boot at 126 or 133 at all. It will post, but lock up at the splash screen. Alejandro" Hi, I'm thinking of buying the P3B-F. Does it support the P3-800E? (I think it should but I'm not 100% certain). "I am presently running a 800 PIII on a PIIIBF without any problem In fact the P3BF is the best motherboard everdone by Asus It runs PIII e, b, eb processor perfectly and better than the P3C!!!!!!!!" Sunny Leung wrote: > Hi, I'm thinking of buying the P3B-F. Does it support the >P3-800E? (I think it should but I'm not 100% certain). Yep... as long as you flash the BIOS to 1004 it should work fine with CuMines.