ATHLON XP 1800+ Thoroughbred B revision overclocking help.

jancz3rt

jancz3rt

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ATHLON XP 1800+ Thoroughbred A revision overclocking help.

Hey everyone.

I have an Athlon XP 1800+ Thoroughbred Revision B processor. I have already raised the FSB from the default 133 to 166 Mhz. Therefore as a result my processor is overclocked to 1.9 gigs approximately. However, I would like to take it further. The problem is my ram. I have a gig of 333Mhz DDR. However when I should decide take the FSB to 200 (My mobo is MSI KT4 Ultra), even the memory gets OC'D. That's what I want to avoid. So I know I could raise the multiplier but a significant performance increase would not follow so what do you suggest? Anyway by raising to 200Mhz FSB, will it overclock my pci bus etc? I am not sure of that. Thanx.

JAN :)
 
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generally when you raise the FSB on newer boards it will not overclock the PSI bus cuz its "locked". one way to keep FSB at 200 and ram lower would be to use a ratio, but that usually isn't a good thing. you want your ram and fsb to be 1:1 cuz it gives you the greatest performance. have you tried upping the voltage of your ram and loosening the timings, that might get you a lil' higher. just try different ratios and see if one of them works for your ram, but you might notice performance loss. also what stepping is your 1800+?
 
Aha

Thanks for the help. I will try that which you have suggested today once I come back from school. CPUz threw in the following info:

Revision B0
Stepping 1

And one more note. Do you think that it would be worth it getting DDR400 ram instead of the 333 and then overclocking? By the way is there any way to find out whether or not my pci bus is locked?

JAN :)
 
I have an Athlon XP 1800+ Thoroughbred Revision B processor
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You sure thats a TBredB and not a TBredA??

Revision B0
Stepping 1
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Not useful info, just tells you the submodel names :)

And one more note. Do you think that it would be worth it getting DDR400 ram instead of the 333 and then overclocking
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Depends.... my 333Mhz can run at 500Mhz (not so well so i usually run ay 475Mhz)

By the way is there any way to find out whether or not my pci bus is locked?
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Odds are it is locked. They often dont like deviating past 37Mhz and rarely past 41Mhz.
 
Hey could you tell me if its TbredA or TbredB

Hey this is more advanced info CPU z told me:

Throughbred

Family 6 Model 8 Stepping 1

Ext family 7 Ext model 8 Revision B0


PLEASE LET ME KNOW<<<<
 
Hey could you tell me if its TbredA or TbredB
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Its a TBredA. The first TBredB was the XP2400+

XP1800+ (TBredA)
FSB = 133Mhz
Multiplier = 11.5x
Process = 130nm
Voltage = 1.50v

XP2400+ (TBredB)
FSB = 133Mhz
Multiplier = 15.0x
Process = 130nm
Voltage = 1.65v
 
Praetor said:
Its a TBredA. The first TBredB was the XP2400+
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i used to have a 2400+, its in my gf's rig now..its SOOO hot. i hated the TbredB's they were 56C+ idle on stock cooling...crazy.
 
i used to have a 2400+, its in my gf's rig now..its SOOO hot. I hated the TbredB's they were 56C+ idle on stock cooling...crazy.
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The only difference between the TBreds and the Bartons is the addition of 256K of cache. Perhaps you were thinking Palomino and TBred?
 
Praetor said:
The only difference between the TBreds and the Bartons is the addition of 256K of cache. Perhaps you were thinking Palomino and TBred?
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i thought the TbredB's were alot hotter than the A's...thats all i meant. my barton @ 1.73V is only 32C with an aero 7+...loads better than the TbredB...but its a mobile of course.
 
i thought the TbredB's were alot hotter than the A's
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Not really... maybe a degree or two but i think thats purely coincidental or because the chips ran faster ... now the Palos and TBredAs .... thats a different story!
 
Are U Sure?

Common..first of all thanx for the explanations :). Now my Athlon XP 1800+ (TbredA) ran at 45 Celsius max with retail cooling. I bought a coolermaster of up to 3200+ and that keeps it below 40 regardless of the load. Now are we talking the same processor?

JAN :)
 
One Important Question...

Hey my motherboard (MSI KT4 Ultra) allows me to change the FSB to 230Mhz. I can, according to them use DDR PC3200. However this is where I got confused. When I raise the FSB to let's say 200 from 166 (default for my processor 133), will this overclock my ram? I mean I remember that they somehow worked asynchronously before. Ram at 333mhz and processor at 266mhz. Please clarify this for me...

JAN :)
 
Hey...

I ran across a problem. When I raised the multiplier from the default 11.5 to 12...the comp refused to boot. I had to reset the CMOS! Could this be because the multiplier is locked, or juice...or? I thought that the 1800+ series had it unlocked :mad: . Please help.

JAN :)
 
To eliminate the possibility of the juice you can always check the voltages. Also, considerign you are running with a 400MHz OC right now ... thats nothing to complain over :)
 
Not 400mhz

Hey I have oc'd my processor from the 1800+ to the 2500+ by simply raising the FSB (correct me if I am wrong, 100,133,166 supported for me) from 133mhz default, to 166mhz. Therefore the DDR bus is at 333Mhz.This is why I would like to know...because i would like to have it at the 400mhz DDR. :)

THANX, JAN :)
 
Hey I have oc'd my processor from the 1800+ to the 2500+ by simply raising the FSB
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Well "raising the FSB" is HOW you OCd. Going from 1800+ to 2500+ is WHAT you OCd (by). Your TbredA is stock at 1.53GHz and the Xp2500 runs at 1.83GHz .. i guessed 400Mhz because i underestimated the 1800+ ... you're running a 300Mhz OC.
 
Thanks...

Thanks. That cleared things up. I am actually running at 1.9211 gigs from as you have mentioned 1.53. So you were right at saying that I got it OC'D by 400mhz ( :rolleyes: ). Sorry man.

JAN :)
 
Tbred B Notice>>>>

Hey I found this. I remember bothering you with trying to figure out whether my Athlon Xp 1800+ is a Tbred A or B, but I remember that I was being sold the Tbred B one... Well I found this link which shows that some Athlon XP 1800+ were later produced with the Throughbred B core. I am sorry but i like to get things straight. :D

JAN :)
 
Sorry man.
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No worries! :)


I am sorry but I like to get things straight
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You are indeed correct although the low-clock TBredBs were extremely rare
http://www6.tomshardware.com/motherboard/20040619/socket_775-14.html ... in fact I think they are so rare that they are effectively nonexistent by far and large. This would explain why "The Book of Overclocking: Tweak Your PC to Unleash Its Power" (ISBN:188641176x) noted the TBredB's started at XP2400 (as well as my initial suspicions)
 
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