Overclocking the Barton 2500+

Naj wrote:
I am getting ready to rebuild my computer system to the following:

Asus A7N8X Deluxe Mobo

Make sure it's a Rev2.0 if you want 200MHz FSB. BIOS 1004 seems to be best
for overclocking.

AMD 2500+ Barton w/ Thermaltake Volcano 11 heatsink/fan
2x 256mb Kinsgston 2700 RAM w/Vantec Copper heat spreaders

If you haven't got the ram yet, get some PC3200 and run the FSB and RAM at
200MHz - the increase in memory bandwidth is appreciable.

GeForce Ti4200 64 mb
300 W Power Supply

As long as it's a very good quality one you should get away with it. I'd
consider upping that a bit.

I haven't overclocked my older systems. I got instructions on
overclocking the RAM timings on Tom's Hardware, but I wanted to make
sure I have the CPU overclocking correct. I am leaving the FSB @ 333
Mhz so it matches the RAM, so I need to fiddle with the multiplier.
How far can the 2500's multiplier be upped stabely (and is it locked
at some point, I heard that the XPs had a multiplier lock). Is there
anythign else I can or should do without actually soldering anything
onto the chip? Thanks in advance.

T'Bred A & Bs as well as the Barton are all unlocked.

Start with about 2.2GHz - you may be able to push it to 2.5GHz with
excellent air cooling.

Ben
--
I'm not just a number. To many, I'm known as a string...

"Naj" wrote in message
om...
I am getting ready to rebuild my computer system to the following:

Asus A7N8X Deluxe Mobo
AMD 2500+ Barton w/ Thermaltake Volcano 11 heatsink/fan
2x 256mb Kinsgston 2700 RAM w/Vantec Copper heat spreaders
GeForce Ti4200 64 mb
300 W Power Supply

I haven't overclocked my older systems. I got instructions on
overclocking the RAM timings on Tom's Hardware, but I wanted to make
sure I have the CPU overclocking correct. I am leaving the FSB @ 333
Mhz so it matches the RAM, so I need to fiddle with the multiplier.
How far can the 2500's multiplier be upped stabely (and is it locked
at some point, I heard that the XPs had a multiplier lock). Is there
anythign else I can or should do without actually soldering anything
onto the chip? Thanks in advance.

There's no reason why your FSB and RAM have to be running at the same speed.

12.5x166.67=2083MHz (2800+ Barton) but quite a few are going up to 400MHz
FSB with a multiplier of 11. 11x200=2200MHz (3200+ Barton). Even
12x200=2400MHz is fairly easy with good cooling. Just raise your vCore a bit
as you go up, maybe .025 volts in steps. I don't think you can go above 12.5
without doing a mod but I'm not positive about that.

Go to www.overclockers.com and look at the CPU Database for some ideas.



-Too_Much_Coffee ®

I think my 300W should be fine. I am currently running an AMD Athlon
900Mhz, which was one of the most power-hungry processors produced. I
already have the RAM, I am upgrading on a budget so I couldn't afford
PC3200. I am running both RAM and CPU at the same FSB because
otherwise the slower one ends up creating a bottleneck and you really
don't get any boost in performance.

On 13 Aug 2003 16:07:21 -0700, (Naj) wrote:

I think my 300W should be fine. I am currently running an AMD Athlon
900Mhz, which was one of the most power-hungry processors produced. I
already have the RAM, I am upgrading on a budget so I couldn't afford
PC3200. I am running both RAM and CPU at the same FSB because
otherwise the slower one ends up creating a bottleneck and you really
don't get any boost in performance.

fwiw....
Athlon Thermal Power
====================
MHz Max Watt Typical Watt
900 50 44
2500+ 68.3 53.7

Ed

Athlon Thermal Power
====================
MHz Max Watt Typical Watt
900 50 44
2500+ 68.3 53.7

What tech doc did you get the 900MHz processor info from?
Is it the AMD pdf that talks about the Athlon (slot a)..
I cant seem to find tech info on the first socket athlons ..

On Thu, 14 Aug 2003 08:30:46 +0100, "rstlne" wrote:

Athlon Thermal Power
====================
MHz Max Watt Typical Watt
900 50 44
2500+ 68.3 53.7

What tech doc did you get the 900MHz processor info from?
Is it the AMD pdf that talks about the Athlon (slot a)..
I cant seem to find tech info on the first socket athlons ..


Not sure, could be from an AMD CD or their web site.
From the AMD tech docs for the Duron spitfire and Athlon T-bird.

Duron Processor Core V
Mhz Min Nominal Max
600–950 1.5V 1.6V 1.7V

Duron Thermal Power
MHz Max Watt Typical
600 27.4 24.5
650 29.4 26.4
700 31.4 28.2
750 33.4 30.0
800 35.4 31.8
850 37.4 33.6
900 39.5 35.4
950 41.5 37.2

Athlon Processor Core V
MHz Min Nominal Max
650–1400 1.65V 1.75V 1.85V

Athlon Thermal Power
MHz Max Watt Typical
650 38 34
700 40 36
750 43 38
800 45 40
850 47 42
900 50 44
950 52 47
1000 54 49
1100 60 54
1133 63 56
1200 66 59
1300 68 61
1333 70 63

Ed

At any rate, I still don't think I need a
bigger power supply...

Famous last words...if it ain't a sexy speed dripped chrome thingy, you can't
get anybody to buy it.

I've got a coolmax 550W aluminum PSU...wanna know why?

'cause I used the same words YOU did, thought my 400w Powmax was enough, went
thru all the weird reboots, BSODs, and the inability to OC to where other
people were with the same equipment...other than our power supplies.

From then on, I told EVERYBODY to buy the biggest, baddest PSU they can afford
and still eat this week.

Ski

On 14 Aug 2003 06:05:16 -0700, (Naj) wrote:

Interesting. A friend of mine told me about the 900, I guess he got
bad info from somewhere. At any rate, I still don't think I need a
bigger power supply... what do you think, here are all the components
in my machine that draw power:

A7N8X Deluxe
Barton 2500+ w/ Thermaltake Volcano 11
2x 256mb PC2700 RAM
56x Acer CD-ROM
8x Sony CD Burner
Western Dig 20 GB HD @ 7200 RPM
GeForce 4 Ti4200
5 case fans

All depends on how good your PSU is, AMD systems like a good source of
power on the +3.3V and +5V rails (combined power). I have an enlight
300W (165W combined) which AMD rated for up to a 1700+ palomino and I'm
running a 2000+ palo @ 2100+ with no problems so you may just want to
try the PSU you have. When building systems I generally use a 180W-190W
minimum combined power PSU.

Ed

"Ski" wrote in message
...
At any rate, I still don't think I need a
bigger power supply...

Famous last words...if it ain't a sexy speed dripped chrome thingy, you
can't
get anybody to buy it.

I've got a coolmax 550W aluminum PSU...wanna know why?

'cause I used the same words YOU did, thought my 400w Powmax was enough,
went
thru all the weird reboots, BSODs, and the inability to OC to where other
people were with the same equipment...other than our power supplies.

From then on, I told EVERYBODY to buy the biggest, baddest PSU they can
afford
and still eat this week.

Ski

If you know what you have, add your max power for everything.. throw an
extra 20w on top of it then take that number and divide by .7 (that's the
efficency of many power supplys.. so a 240 supply gives about 170w max)..
I have seen systems with 25w DC supplys that run fine so it's not about
having the biggest and baddest, it's about having what you need..
GRANTED most people will not take the time to research their parts, the max
power consumption and then do the calcs.. so in that case .. yea.. buy
something larger than what you "think" you need


In my mind the calcs are WORTHLESS,
as it's been my experience
EVERYBODY WANTS MORE.

This week, the machine is fine,
next week, a new power hungry doo-dad comes out
and the customer/enthusiast MUST have one.
Faster procs, more memory,
vid cards that require dedicated power,another optical drive,
another hard drive, more fans, hey gimme a window
and somea those neon lights.

I'm waiting for one of my pals to insist
I install a microwave and icemaker...
cuts down on those long walks to the kitchen.

In other words,
buy one bigger than you'll ever THINK you'll need,
you'll find a way to use the power.

(I'd like to take the time to thank the inhabitants
of ALL the usenet overclock groups,
as you've made me better at this
than I ever thought I'd be...GRASIAS.)

Ski

On Thu, 14 Aug 2003 08:30:46 +0100, "rstlne" wrote:

Athlon Thermal Power
====================
MHz Max Watt Typical Watt
900 50 44
2500+ 68.3 53.7

What tech doc did you get the 900MHz processor info from?
Is it the AMD pdf that talks about the Athlon (slot a)..
I cant seem to find tech info on the first socket athlons ..


What's really weird is AMD shows the 2500+, 2600+ and 2800+ Bartons all
using the same spec for thermal power.

(Chapter 6 in pdf)
AMD Athlon™ XP Processor Model 10 Data Sheet 26237 C 05/12/03
http://www.amd.com/us-en/assets/cont...docs/26237.PDF

Ed