Is it possible to run the Duron 1ghz with a 266mhz FSB?

[WageSlave]

instead of the 200mhz?

 

[Rand]

It's definitely possible but you will have to unlock the multiplier and drop it to 7.5 instead of it's default 10X, in order to run it within spec at 266MHz FSB.

 

[WageSlave]

So how much of a performance gain would I get? is it worth the trouble?

 

[Killrose]

<< So how much of a performance gain would I get? is it worth the trouble? >>



It's always best performance wise to run at a higher frontside bus if possible. A 7.5x133MHz ratio will out perform a 10x100MHz ratio in probably all benchmarks even though they are both running at a gig.

The Morgan core Duron may just be able to do the 10x133MHz with decent cooling and a voltage increase adjustment to the core. It should certainly do some amount of overclocking, how much is usually determined by the individual CPU.

 

[SleepyGuy]

well i have a Duron Morgan 1 Ghz... can't go over 1.1 Ghz (10x110)... going 111 fsb hard locks! My duron 700 runs at 1050 @ 150 FSB... that's an overclock!

 

[Priit]

<< So how much of a performance gain would I get? is it worth the trouble? >>



Well, durons are more sensitive about FSB speed/memory bandwidth than athlons due to smaller cache. I think it would be worth to try (though I couldn't unlock my duron ).

 

[Wind]

<< So how much of a performance gain would I get? is it worth the trouble? >>


Performance gain is nticeable. Yes, its worth it.

 

[Wind]

<<

<< So how much of a performance gain would I get? is it worth the trouble? >>



Well, durons are more sensitive about FSB speed/memory bandwidth than athlons due to smaller cache. I think it would be worth to try (though I couldn't unlock my duron ). >>


Not really. A Duron 800 (Splitfire) can run FSB as high as 150-160+ w/ some good setup.

 

[Priit]

Not really what ? I don't doubt that durons can run on high FSB, I just said that running them so brings you even bigger performance gain than with athlons. And I really screwed up unlocking my duron

 

[WageSlave]

Hmm.... how do I unlock a duron? Also is it better to get the 1ghz Duron, or the 1ghz regular athlon? the athlon isnt that much more... (20$)

 

[gtd2000]

Well I popped my Duron 1000Mhz (received it last night) into my trusty ABIT KT7A V1.0 and powered up - lights only nothing else - PANIC!

After clearing the CMOS all was well and booted up at 1248Mhz - I then changed this to 1200Mhz in the BIOS.

The CPU will run stable at 1.75V and 1200Mhz with 100FSB

The System will not boot AT ALL using the 1200(133) setting!

Maybe there is something in the 133FSB setting that these chips do not like?

 

[WarCon]

gtd, did you successfully unlock it? If not you was trying to boot up at 1333 because the multiplier is staying at 10.

 

[gtd2000]

As far as I am aware I did successfully unlock it - I'll give you a run down tomorrow of boot speeds just to make sure

I can do 10x, 11.5x and 12x so far

 

[Wind]

<< As far as I am aware I did successfully unlock it - I'll give you a run down tomorrow of boot speeds just to make sure
I can do 10x, 11.5x and 12x so far >>

Lower ur multiplier to say 8.5, 9.0 or 9.5. Then up ur FSB to 133. Vcore should be around 1.75 to 1.80v

 

[WarCon]

Yeah maybe just try 1ghz at 133 (7.5) and see if it really is the high fsb that is the culprit. I am actually curious, not doubting your ability in the least. I bought one of these for a friend and put it on a ABIT KT7A and its running really nice. I upped the FSB (didn't want to mess with unlocking it because it isn't mine and I don't want to have to constantly be tweaking his system. Anyway at default vcore it took a 10 mhz fsb increase and didn't even really get much warmer. 1C is all (as measured in bios) and that was with a heatsink that mwave through into that combo for free.

 

[gtd2000]

Well I checked out the 7.5 x 100FSB option last night - worked perfectly. I even installed MS Office with this setting before re-booting.

Tried 7.5 x 133FSB and only got the lights and PSU coming on

Went back to the 1200(100) setting and boots perfectly - after clearing the CMOS that is

I did a benchmark with an old version of SiSoft Sandra and the difference is pretty significant to my old over clocked Duron 700 @ 933 or 1000Mhz (133FSB).

I can definitely feel the difference in "snap" when the PC responds to commands with this CPU compared to the 700.

Definitely $54 well spent if you ask me

 

[JustStarting]

The problem with the 7.5x133 setting is that it initially boots at 10.0x133 till it gets to the bios. Obviously that is too much to handle for the Duron. What you need to do is lower the default multiplier on the L6's to 7.0 or 7.5. I do not remember the bridge configuration for 10.0 or 7.0/7.5, but make it so you don't have to cut a bridge if you can. I changed a duron 800 to default to a 700 by painting the 3rd bridge on the L7's. Even though the bios was set to 7.0 the chip would not post because it's default setting of 8.0 was too high to boot at 8.0x133. By painting the L6's to default to 7.0 it was able to boot at 7.0x133. Another possibility is that default voltage is not high enough to boot- fixxed by connecting all L7's (I think). Remember, the CPU will boot at default setting's till the bios is checked. By changing the defaults on the bridges, you will get maximum OC's.

 

[gtd2000]

JustStarting,
Are you sure that applies to the KT7A? I remember reading about this in the early days of the KT133A chipsets.

This swayed my decision from an Epox 8KTA to the ABIT KT7A due to the intial boot choosing the default multiplier (for a fraction of a second) when powering up. I'm sure they said that the ABIT boards did not have that problem - I could be wrong though!

To be honest I'm very happy with the performance at 1200 with 100FSB and all tweaks applied.

I'll look into the multiplier change though and see what happens.

 

[JustStarting]

The problem was specific to the KT133A's- see here. I couldn't find the article till just now.

Edit- Don't think ABIT did have this problem after reading more in depth.

 

[gtd2000]

<< Jumperless boards include the ABIT KT7A-RAID and ASUS A7V133. A quick email to ABIT confirmed that the default FSB speed on the KT7A-RAID, before the BIOS is initialized, is 100MHz. The ASUS A7V133 most likely does the same thing. >>





<< But what happens if you don?t happen to own any of the aforementioned boards? Don?t give up yet; there are still ways to get around the problem. The last resort, of course, is to physically changethe default multiplier, right on your CPU. >>



That must have been the article that I was talking about

Sorry to be a smart ar$e

 

[JustStarting]

I wish I had a KT133A myself! I bought my KT7 just before the KT133A's came out. Oh well, gives me an excuse to upgrade soon.

 

[gtd2000]

Looking at your KT7 rig it looks like it is already more than enough for most of the current tasks I have for day to day use.

Doubt you would "really" need to upgrade.

Have you fully optimised all your BIOS settings etc yet?

 

[WarCon]

It looks like the Morgan duron doesn't like the 133 mhz fsb. Oh well. It is still a real nice budget solution.

 

[JustStarting]

Don't get me wrong- I love my KT7. I would probably not get rid of it, just build another (KR7A or 8KHA+2). I love the Abit Soft Menu, but Epox's are reaching 200 FSB w/ Beta bios (built for a friend and it screams). I'm reluctant to touch my machine, because it is flawless and runs all applications I ask it to (it has been up 24/7 for over a year without a hiccup). I also have my graphics work set up on it. My bios is optimised as far as I can tweak it- or so I believe. I have spent many hours benchmarking Sandra, 3DM2k1 and most importantly UT GOTY!!

 

[WarCon]

Dye sublimation? Man I would love one of those............