Question regarding A7V bus settings

[sodcha0s]

I am thinking about upgrading my processor, currently running an 800 T-Brid on my A7V (rev. 1.02). Everything I've seen on the net says that the fastest cpu I can use on this board is a 1.4GHz with a 200fsb. My question is why can't I run the 266fsb cpu? Everything I see says this board only supports the 100MHz bus speed, but there are settings for 133Mhz cpu external frequency in BIOS, in the manual and board dip switches. Isn't that the same thing? What am I missing? Sorry if this topic had been covered before, but I haven't been able to find an explanation anywhere.

 

[NicColt]

>My question is why can't I run the 266fsb cpu?

because it's an 100fsb board only.... you can put a 266fsb cpu but only use it at 100fsb, that's what I have. I have a 1.33 266fsb cpu running at 13x100=1300

>Everything I see says this board only supports the 100MHz bus speed, but there are settings for 133Mhz cpu external frequency in BIOS

what bios do you have. even if the bios says so, it doens't mean that the hardware will support it.

 

[sodcha0s]

<< because it's an 100fsb board only >>



Then why are there settings on the board for 133MHz bus? BTW, I am running BIOS ver 1007.
There are dip switch settings on the board for 133MHz bus as well as in the BIOS. This is why I don't understand why I keep reading that the board only supports 100fsb. Like I said, the 133MHz setting says it's for the
cpu external frequency, is that different than the fsb?

 

[NicColt]

what I can say is this, I have an A7V 1.02 and I have none of that, by that I mean no mention of 133Mhz on the board. I have it in the bios but like I said it's in 'theory'. You can set it to 133Mhz but impossible to get to, no A7V will ever reach that. The only thing I can think of is that they use a similar bios for the A7V/100 and A7V/133. I've hear of no one ever getting over 110Mhz and that was a miracle. You are most likely to get between 104-110.

 

[Maverick319]

Think of it this way: You can put a 160 MPH Speedometer in a Geo Metro, but will it ever achieve 160 mph? Not unless you push it out of a C-130 at 20,000 feet.


I have a A7V, and am using a 1.2Ghz, 266FSB chip in it right now. If you don't believe us, go ahead and set the dip switches and crank it up to 133. But I hope you have another computer with internet access because you will be back wondering why your computer doesn't post. If fact, for all purposes it will appear dead in the water until you clear the CMOS.

I tried 133FSB, it doesn't work. I like my A7V board, and I am not quite ready to buy a new one yet, so I breathed a little new life into it with the 1.2 chip.

 

[techietam]

I have A7V rev1.02 at home in my second PC.
Take a look at PCI BUS speed settings in BIOS
where you set CPU FSB.

I think it goes: CPU/PCI
With A7V133 it would be 133/33, with
A7V (I think, can't tell for sure untill I get home)
it would be something like 133/41 or 133/43 or
something like that. That'll drive your PCI
cards, IDE controller and AGP BUS insane.

Well.. Not insane, but can cause big issues

 

[nvektus]

The A7V's chipset supports 100Mhz FSB only, that's why. The whole board is made to run at 100Mhz(x2). Like ^ said, you'll be lucky to get that board runnin' at 110Mhz, mine only goes at 106. All OC'ing board always have those outrageous extra multiplier settings. Just in case somebody uses them I guess My P4B266's multiplier settings goes all the way up to 200Mhz but no matter how great it OC's, it'll never reach that FSB.

 

[Wuzup101]

Um...I had my duron 700 and A7V running at 112x8.5 = 952mhz. Very stable for over 6 months. Both chip and board are now in my dad's computer and working great. If I remember correctly memory scores wern't that bad for the time either with the crucial I had running cas2.

 

[sodcha0s]

OK guys, thanks for the input. I just figured since the settings were there for 133MHz that it should be able to do it. Techitam, I checked the manual and it indicates a 133.30/33.33 fsb to pci ratio, so that would be perfect if the board would in fact run at that setting.

One more thing while I'm here......

I just put together a system for a friend. It's running a 1.3GHz/266fsb Athlon with an Asus mobo (sorry, can't remember which one) yadda yadda yadda.... Anyway this thing screams, boots up faster than any system I've ever seen, and he has noticed one major and surprising improvement. He is now downloading files on his DSL connection at like 150k/sec, consistantly. On his old system he would only get between 30-50k/sec. I think it must be due to either his new HDD (WD ata100 7,200rpm) or the increased system bus speed, or both. Anybody have any ideas on this one?

 

[nvektus]

<< He is now downloading files on his DSL connection at like 150k/sec, consistantly. On his old system he would only get between 30-50k/sec. I think it must be due to either his new HDD (WD ata100 7,200rpm) or the increased system bus speed, or both. Anybody have any ideas on this one? >>



I'm sure it has nothing to do with the new hd or increased fsb