I have had it for a couple years and I am gonna be upgrading in the next couple months so I figured that I should overclock it. I have a few questions before I even attempt it though. Firstly are the L1 bridges unlocked from the factory? What would be a good fan to put on it? How much do you have to play around with your computer before you start getting maximum performance out of the processor while still being stable?
I want to overclock my 1.4 ghz athlon t-bird
- Thread starter Atlantean
- Start date
I believe all the 1.4ghz 266fsb models were, but it has been awhile....quick visual check could confirm it unless you are already running then it wouldn't be quick!!!!
Already running it so it would be time consuming to find out. And it would make things so much easier if it is.
I agree with older mobos you lack a pci/agp lock and often the ram dividers necessary to keep things in spec with a fsb boost...With the tbirds multipier ocing was more advantageous....
Go ahead and try to change multiplier in bios. The worst I imagine it will do is require a reset of cmos or just a no change in bootup...
Possibly!!! My 1.4ghz was able to do 1533mhz at default vcore but not anymore after that....I actually cupled one .5x multiplier increase with an fsb increase to 138 and everthing was fine....My board did overvolt sligthly to 1.78v so they may have helped....
I think you may have to close some bridges for that if I remember so you may have to see what it will do then take it from there...With tbirds and vcore boost comes tremendous heat so have asome decent cooling...
I think you may have to close some bridges for that if I remember so you may have to see what it will do then take it from there...With tbirds and vcore boost comes tremendous heat so have asome decent cooling...
The AHYJA stepping on the 1.4GHz was a good overclocker if thats what you have.As mentioned if you don't have agp/pci lock n your mobo you probably won't get to far.Best to see how far yyou can go on devault voltage and when it doesn't boot up raise the vcore .025 or .050 at a time and no more than 1.8V.If you can't boot after overclocking shut down the computer and hold the indert key on the keyboard and while holding it down hit the power botton on the computer.Keep holding until you hear or see it boot then hit delete to get in the bios.This might save you from having to clear the CMOS on the mobo.If it doesn't work then you have no choice.
Not sure what the stepping is. I have the Gigabyte GA7DXR motherboard, was supposed to be good for overclocking. I guess I will just try as you say tomorrow after I get off work. Thanks for the help and advice. So just run it for a couple days at 1.5 ghz if it has no problems increase it to 1.6 or something like that?
Jeff7181
Lifer
- Aug 21, 2002
- 18,368
- 11
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Ummmm... I don't think they made "266" Mhz FSB Athlons. That came about when they went to the Athlon XP line and double pumped the FSB and started using DDR. Just because your motherboard uses DDR RAM, doesn't mean your processor has a double pumped bus. Like I said... as far as I know, they were made with 133 Mhz FSB's and are NOT double pumped.
*EDIT* Nevermind, I'm wrong... it's been a while =)
*EDIT* Nevermind, I'm wrong... it's been a while =)
uhh, Jeff you are wrong...They made the 266mhz FSB in the 1200mhz as I own one, and they also came in 1400mhz....dunno if any other speeds though.
Just go ahead and try, it wouldn't hurt. If you can change the Multi higher in your BIOS, then do it, it's as simple as that. You can up the FSB as well. Just make sure you give it sufficient power (VCore). Personally, I am against overclocking in this day and age, but seeing as you are getting a new CPU, why not?
I was looking in cmos and it looks like I can only change the fsb setting. It says 133, then please enter values up to 250 or something along those lines. Yes it is double pumped to the guy that says it isn't so it is actually 266 mhz fsb.
You can go fsb or multiplier, or both. On an 8K7A (AMD 761 chipset- like yours) I've been at 1.6 for a long time. 8K7A is set to give .1 volt boost to vcore as the cpu likes the juice for stability. May be time to spend $80 for an XP2400+ boost the fsb! Have fun! 
Atlantean, Have I missed it or have you listed what brand and model your mobo is??? Not all boards have multiplier options so it could be a no go for you on that front...
Do you have jumpers for the voltage and multiplier, or bios entries?
my thunderbird 1496 is cooled by volcano 6 cu. I replaced the 60mm fan with a thermaltake 8025a using an akasa 60 -- 80 adaptor. this is adequate for a cpu which radiate estimates dissipates 83 watts with 1.82 volts.
my thunderbird 1496 is cooled by volcano 6 cu. I replaced the 60mm fan with a thermaltake 8025a using an akasa 60 -- 80 adaptor. this is adequate for a cpu which radiate estimates dissipates 83 watts with 1.82 volts.
Ok so I have decided that I am gonna overclock by increasing the fsb, I have increased it by 2mhz so far cause I am not really sure how big of jumps to do it in. Next one is gonna be by 5mhz which will make the processor 45 mhz faster and I will probably do it in 5mhz jumps until I hit 1.7 or higher ghz, can anyone tell me if I will have to increase the voltage settings slightly to increase the speed?
EDIT: I am now at 1502 mhz and I increased the voltage to 1.8 volts so see what would happen... wish me luck I want to get this up to at least 1.7 ghz.
EDIT: I am now at 1502 mhz and I increased the voltage to 1.8 volts so see what would happen... wish me luck I want to get this up to at least 1.7 ghz.
If you want to change multiplyers on a Thunderbird, use the pencil trick on the L1's.
Then you can probably raise your fsb quite a bit and lower your mult, thus gaining alot of headroom.
You might have ok luck at getting to 1700Mhz, but I would watch overclocking the fsb too much cause of the pci/agp instability.
Then you can probably raise your fsb quite a bit and lower your mult, thus gaining alot of headroom.
You might have ok luck at getting to 1700Mhz, but I would watch overclocking the fsb too much cause of the pci/agp instability.
1.7GHz would be with water cooling. My AYHJA Y could run at 166FSB but the multiplier would be around 9 to 10, giving the CPU an effective speed of 1.5GHz to 1.67GHz. I don't think it's worth the extra heat, though.
Think I set it a little too high, or had the voltage too high or something, so I am gonna leave it at 1.5 ghz till this arrives so I can monitor the temp.
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