Overclock causing bad CDR burns?

[KIAman]

Hmm, I have my AXP currently at 12.5x140 1750mhz "2100+"

The other day I tried to raise my FSB to 145 and it booted fine into windows and was stable enough to play some games for around 2 hours, but then I went to burn some ISO's and around every other to every 3rd cd burned was a coaster. I rebooted and knocked the FSB back down to 140mhz and all the cd's were burned perfectly fine.

Does the FSB affect your cdr burning? And if so, how do people have 145-166 and still burn their CD's? I understand atleast on my MB once FSB is at 166, the agp/pci goes back to spec 66/33.

AXP 1700+@2100+
Epox 8k3a
512mb Corsair
350watt Enhance PSU
Acer 24x12x48 CDR

Please enlighten me with holy words of advice.

 

[nealh]

I have had this problem on an Asus A7V133 when I ran it over 146 fsb all my burns were bad..146 was fine...

I am surprised though that you were able to play games but have bad burns..I would trade out the ide cable the burner is on a nuse an ATA100 cable...make sure DMA is enabled

 

[Boonesmi]

your ide controller is on the pci bus

if you increase your fsb its also going to increase your pci bus (when your fsb is set at 133mhz your pci is running a 1/4th divider making the pci bus speed 33mhz, which is the pci bus spec)

so when you overclock your fsb to 145mhz your pci is going to be 36mhz... most pci devices should work on a 36mhz bus, but some wont (usb is famous for not working with an overclocked pci bus)

 

[KIAman]

I tried replacing the ide cable with a udma 133 cable, but it would not recognize my cdr drive, i tried every setting in bios and never recognized. I finally put back the old cable and it recognized. I have an old Lite-On 12x10x32 that I hooked onto my computer to see what happens and guess what, it burns fine at 145mhz FSB, sooooooo I am guessing my problem is my acer 24x12x48 drive which don't like the pci out of spec too much. Oh well.

What about the people who have their fsb WAY out of spec, do they not burn CD's at those speeds?

 

[nealh]

I think you found the unfortunate problem with hardware and a higher fsb....some just do not like it..strange given the fact the newer hardware should have better tolerances...and 133 vs 145 is a small boost as well

Some people probably have gotten lucky and there hardware will work at high fsb...also there are some boards that support 1:5 divider ...also now there are dividers so fsb :memory speeds can be max

 

[SupermanCK]

I am perfectly find at 150FSB...although, i am on the opposite side with Intel...

 

[Boonesmi]

i dont think its an intel vs amd thing

basically either the drive can handle a 37mhz pci bus, or it cant 😀


some cards are very good at running on a high bus speed, and other fail with even the slightest overclock

 

[Buz2b]

I think the key here is that the Lite-On drive worked and the Acer didn't. The Lite-On is an excellent drive; I don't know anything about the Acer but suspect it just isn't the same quality. I used to have that same 12x10x32 drive and recently upgraded to the 32x. Never a problem at higher FSB speeds but then again, I don't think I ever had mine that high. Sounds like you will have to make a decision on what you want to do and when you want to do it. Either buy a new drive or turn down the FSB every time you want to burn a CD. I wish you luck in that decision process.
Just a real "shot in the dark" here but you wouldn't happen to have an ATA 66 or 100 PCI controller card laying around to try this with do you? Not sure it would make any difference but maybe going through a separate controller card would help negate the effects. Might be a dumb idea but if you have one laying around, why not try it? Just call this my "weird thought of the day". 😱

 

[KIAman]

Wierd, I had the acer hooked to the slave of my HD ide cable, and it detected fine... Still doesnt burn at 145fsb. I think i will just keep my fsb at 140. My Axp at 1750mhz is fine enough for me.

 

[jiffylube1024]

Originally posted by: Boonesmi
(usb is famous for not working with an overclocked pci bus)

or, more appropriately infamous for this...

Originally posted by: SupermanCK
I am perfectly find at 150FSB...although, i am on the opposite side with Intel...

Originally posted by: KIAman
I tried replacing the ide cable with a udma 133 cable, but it would not recognize my cdr drive, i tried every setting in bios and never recognized. I finally put back the old cable and it recognized. I have an old Lite-On 12x10x32 that I hooked onto my computer to see what happens and guess what, it burns fine at 145mhz FSB, sooooooo I am guessing my problem is my acer 24x12x48 drive which don't like the pci out of spec too much. Oh well.

What about the people who have their fsb WAY out of spec, do they not burn CD's at those speeds?

Most people who have ridiculously high FSB's (such as SupermanCK quoted above, and many more in the 160-175 MHz range) are running Intel P4's, in conjunction with motherboards that have PCI/AGP speed locking. It doesn't matter how high you go on a P4 as long as your Motherboard supports this feature (all of the popular ones do ...). So, it actually IS an Intel vs. AMD thing, just not in the way it appears.

 

[Buz2b]

So, it actually IS an Intel vs. AMD thing, just not in the way it appears.

Very interesting and excellent point. I'd be interested in hearing any rebuttals to that.

 

[Boonesmi]

hehe well not all intel boards have pci/agp locking... and who is to say amd boards wont have something similar in the future

its not AMD vs. INTEL... its pci/agp locking, vs non pci/agp locking 😀

pci locking really has nothing to do with the cpu, its totally up to the chipset on the motherboard
so it would be more acturate to say its INTEL vs. VIA

 

[Buz2b]

OK, I'm confused. I thought you made an excellent point about the chipset and then you went on to say:

its not AMD vs. INTEL... its pci/agp locking vs non pci/agp locking

Then you say:

so it would be more acturate to say its INTEL vs. VIA

I think I see your point about the chipset. But you must admit that the statements are a bit confusing. 😕

 

[Boonesmi]

im not up on all the new p4 motherboards 🙂

but it was my understanding that VIA doesnt make a chipset that supports pci locking (i could be wrong)... but intel does make a chipset that supports pci locking


hehe basically i was saying as far as cpu's it dont matter (intel/amd) but intel also makes chipsets (unlike amd who doesnt want to make chipsets, they just make them when they have to push technology)