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Best overclocking CPU? (AMD Edition)

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October 26, 2003 7:37:12 PM

Hi all - I'm looking to build a mid-level MD gamind system. I was thinking about buying a 2600+ ($99 at newegg), but I always hear about how the 2500+ ($87) is a great performer when overclocked as high as 3200+. Since the 2600 is faster, does that automatically mean that I can overclock it farther? Twelve bucks ain't nothing but a thang, so which of the two would I be able to get a higher, stable overclocking out of?
Oh, yeah, I'm going to use a DFI Lanparty NFII board, with 512MB Geil CAS 2 and Radeon 9700 Pro. I have a Forton Source Pro 400W PS. Thanks for your help!

Women--can't live with them, can't have heterosexual same-species intercourse without them.
October 26, 2003 9:38:30 PM

go for the 2500+ barton and save the difference to get a good heatsink.
October 26, 2003 10:09:47 PM

Like I already said, the difference in money between the two is not an issue. I want to know which would make for the best overclocking situation.

Women--can't live with them, can't have heterosexual same-species intercourse without them.
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October 27, 2003 1:31:27 AM

If you balance out the probabilites they both will possibly obtain the same overclock speed.

But the barton XP2500+ starts from a lower point so its % overclock is better.

PLUS its cheaper and has 512K cache that improves performance.

<b>I am not a AMD fanboy.
I am not a Via fanboy.
I am not a ATI fanboy.
I AM a performance fanboy.
And a low price fanboy. :smile:
Regards,
Mr no integrity coward.</b>
October 27, 2003 2:04:58 AM

Barton 2500+

Newer and more likely to get a more recent core. There are a lot of old thoroughbreds floating around IMO.
October 27, 2003 9:28:56 AM

I have a 2500 barton and 9700pro. I am very impressed with the overclockability of them both. My 2500 is sitting at 2405mhz on just 1.73 volts! My 9700pro does 9800pro speeds easily too. Get the 2500 as it will do at least 2400mhz and probably 2500mhz if you get lucky. Also some of the latest chips do 2.5-2.8ghz if you watercool and use high voltages (1.9-2.0v).

I get 18k 3dmarks (2001) with my setup, which is pretty good for a £65 ($80) cpu and 1 year old graphics card. Even an A64 3200 and 9800xt can only muster just over 20k.

My system spec: Fast PC<A HREF="http://service.futuremark.com/compare?2k1=7000747" target="_new"> 3D-2001 </A>
"It's not the spoon that bends, it's only yourself."
October 27, 2003 9:31:17 AM

Also that DFI board should get you 230mhz fsb easily. Does your 9700pro overclock well? If it does you could end up with a really fast system.

My system spec: Fast PC<A HREF="http://service.futuremark.com/compare?2k1=7000747" target="_new"> 3D-2001 </A>
"It's not the spoon that bends, it's only yourself."
October 27, 2003 1:08:46 PM

You are from the UK right? Where did you get your CPU? Is there any online store that can let you choose what stepping to buy? I've heard before about www.cpucity.co.uk but they currently carry a Barton 2500 with AQZFA stepping, which I've never heard of before! If I am not mistaken, the AQXDA, AQXEA and AQXCA are supposed to be the best.
October 27, 2003 1:29:20 PM

Yep I'm from the uk. Thats where I got mine from a few months ago (cpu city). As for the stepping, its a new one so should overclock even better than the previous. Not sure though....

My system spec: Fast PC<A HREF="http://service.futuremark.com/compare?2k1=7000747" target="_new"> 3D-2001 </A>
"It's not the spoon that bends, it's only yourself."
October 27, 2003 7:15:50 PM

I've heard that the green 2500 Bartons are better overclockers than the brown ones - is this true, or just a geek myth?

Women--can't live with them, can't have heterosexual same-species intercourse without them.
October 27, 2003 8:57:35 PM

Possibly true.


<b>I am not a AMD fanboy.
I am not a Via fanboy.
I am not a ATI fanboy.
I AM a performance fanboy.
And a low price fanboy. :smile:
Regards,
Mr no integrity coward.</b>
October 27, 2003 9:11:29 PM

I've been away form computesr for way too damn long.

will a barton 2500 work in my A7V8X ?

------------
Apples are good.
October 27, 2003 9:12:15 PM

I've had many of both color. All of them take a 12.5 multiplier on Hyper X 400 & run at 2800 speeds right out of the box on stk. cooling. That's enough for me. I haven't pushed them any harder than that.



Dazzle them with Brilliance, or Baffle them with BS! :wink:
October 27, 2003 9:52:03 PM

yep. Dun see why it wouldnt.
So long as your board is 166fsb capable (and it is).

<b>I am not a AMD fanboy.
I am not a Via fanboy.
I am not a ATI fanboy.
I AM a performance fanboy.
And a low price fanboy. :smile:
Regards,
Mr no integrity coward.</b>
October 28, 2003 9:51:03 AM

Core color is more important. Grey core = nice overclocker. Purple/blue core = poo overclocker. I've tried 2 bartons and 2 tbred cpus and the greyer ones overclock better.

My system spec: Fast PC<A HREF="http://service.futuremark.com/compare?2k1=7000747" target="_new"> 3D-2001 </A>
"It's not the spoon that bends, it's only yourself."
October 28, 2003 1:10:28 PM

sweet. I think i'm going to buy one. my old 1.33GHz TBirds needs a rest.

------------
Apples are good.
October 28, 2003 1:16:35 PM

hmm, how high of a FSB would i be able to go with that?? could i hit 200?

------------
Apples are good.
October 28, 2003 3:32:44 PM

IIRC, not with that mobo, as it's a VIA KT400 one, and has no lock for the AGP/PCI bus... if it has a 1/6 PCI divider for 200Mhz operation then you'll probably be ok if you n/b doesn't overheat, if not you'll be running a PCI bus @ 40Mhz and a AGP one @80Mhz which may give you problems.

---
<font color=red>The preceding text is assembled from information stored in an unreliable organic storage medium. As such it may be innacurate, incomplete, or completely wrong</font color=red> :wink:
October 28, 2003 5:15:22 PM

I thought it did have a PCI/AGP bus lock... are you sure?

------------
Apples are good.
October 28, 2003 8:42:50 PM

200mhz FSB is easy. The latest motherboards will do over 230mhz. I would say all bartons should do 200mhz fsb even if the multiplier is dropped a little to keep actual speed in check.

My system spec: Fast PC<A HREF="http://service.futuremark.com/compare?2k1=7000747" target="_new"> 3D-2001 </A>
"It's not the spoon that bends, it's only yourself."
October 28, 2003 10:52:27 PM

The A7V8X is a KT400 mobo.
And the KT400 has only got support for 166FSB, not 200.
i.e. it lacks the 1/6 divider.
And Via chipsets dont have an independent PCI/AGP bus like the Nforce2 ones.
It may overclock to 200fsb, but the pci/agp speed will be significantly elivated. 200* 1/5 = 40/80Mhz.

And quite a few components wont like 40Mhz PCI.

That Said, it will officially support up to XP2800+ in the Tbred series and XP3000+ barton.
(not the XP3200+ barton though as thats a 200fsb part).


<b>I am not a AMD fanboy.
I am not a Via fanboy.
I am not a ATI fanboy.
I AM a performance fanboy.
And a low price fanboy. :smile:
Regards,
Mr no integrity coward.</b>
October 29, 2003 1:40:28 AM

LOL then why the hell is it called KT<b>400</b> ?? that's freaking retarded. Dammit I need a new motherboard now too.

------------
Apples are good.
October 29, 2003 2:04:20 AM

Well before that there was the KT333, which sported official PC2700 support and unofficial 166fsb support.

With the introduction of the Nforce2, which could theoretically do 400fsb/400mem Via needed something to counter.

Thus the KT400 with 166fsb support (highest official amd chip at the time) and PC3200 ram support.
Unfortunately the ability to run PC3200 ram was limited and flakey.
Often running at 200Mhz asynchronously with a 166fsb and lax mem timings meant that performance was less than running at 166/166.

Only with the KT400A then the KT600 that Via got full 200/200 support.

Your board is still good though.
Supports up to XP3000+, just bear in mind that you probably wont get 200fsb with your PCi devices. 175 maybe.
You could always unlock the processor too.


<b>I am not a AMD fanboy.
I am not a Via fanboy.
I am not a ATI fanboy.
I AM a performance fanboy.
And a low price fanboy. :smile:
Regards,
Mr no integrity coward.</b>
October 29, 2003 2:01:50 PM

yes i'll have to do multiplier overclocking then (mostly).

how do you unlock a barton? (i'm getting a 2500+ barton to overclock, btw).

------------
Apples are good.
October 29, 2003 6:16:04 PM

Here's a couple of options

Cheapest--get a Barton 2500+ and play with multis and fsb to see what your system will do. 200 FSB might be out of reach, but 175 or so should be easy and then ratchet up the multiplier.

Still Cheap--Get an NForce 2 motherboard, two identical sticks of PC3200 ram and either a cheap T-Bred B or Barton(17-1800+ or 2500+). This setup should be around $250 (less with the TBred) and would be a nice upgrade for your current setup. BTW, I just made this upgrade from a KT333 with Palomino 1700 and my Thoroughbred B runs 11.5x200 on my MSI with Corsair value select PC3200. Total of $195 @ newegg-did use a refurb board-no problems at all yet.

Where there's a will, there's a way-even when it comes to screwing up.
October 29, 2003 9:22:39 PM

Im pretty sure its easier than doing the old XP's.

Gone are the trenches u have to fill... I think all you have to do is connect up the bridges with conductive silver ink or something similar.
Best check on a place like www.amdzone.com

<b>I am not a AMD fanboy.
I am not a Via fanboy.
I am not a ATI fanboy.
I AM a performance fanboy.
And a low price fanboy. :smile:
Regards,
Mr no integrity coward.</b>
October 29, 2003 11:27:02 PM

can't just pencil them in like with the tbirds?

------------
Apples are good.
October 30, 2003 11:34:17 AM

arent there Bartons that come unlocked ??? thought I read that a while back, use the board eg the NF2-ultra to change the mult & FSB to suit in BIOS...

Trust me I know what I'm doing... ooops, grab the cat...
October 30, 2003 8:54:59 PM

unfortunately no.
Thye changed the design so that whats needed is a low resistance contact. i.e. a metal, and hot a relativly high resistance contact such as graphite.
Still pretty easy to do though.
silver pen and a toothpick and some patience.

Easier than having to fill the trenches too.


<b>I am not a AMD fanboy.
I am not a Via fanboy.
I am not a ATI fanboy.
I AM a performance fanboy.
And a low price fanboy. :smile:
Regards,
Mr no integrity coward.</b>
October 30, 2003 8:59:15 PM

Maybe.

My low level TbredA was certainly unlocked, and im pretty sure some of the higher level TbredB's were as well.
No idea if the bartons are or not.
ADepends how AMD feltabout overclockers at the time.
For a while there they really didnt want us around :) 

<b>I am not a AMD fanboy.
I am not a Via fanboy.
I am not a ATI fanboy.
I AM a performance fanboy.
And a low price fanboy. :smile:
Regards,
Mr no integrity coward.</b>
!