What is the max for 1700+ t-bred a

[iman_zahari]

:D Does anyone here can tell me what is the max cpu clock for 1700+ t-bred a. And how to o'c it using a msi 745 ultra, and the fan, i recommend the coolermaster Xdream. Thanks.

[CCW]

First off, Welcome to the Xtreme! :D The 1700+s are great OCin and the "B" cores usually go up to 2.3 - 2.4 not sure if its the same for A but it should be close. WHich one is the 745 ultra? is that the KT333 board?

Craig

[iman_zahari]

I don't know. I kinda new in this o'cing thing. I think my board support DDR333

[CCW]

OK, will have a look on the net to find out.... SIS chipset

Product code Ms-6561
Version 1.0
Chip set SIS 745
CCU Bases A, AMD Athlon/Duron
FSB @200/266MHz
Main memory 3xDDR DIMM
Card locations 5xPCI, 1xAGP, 1xCNR
Format ATX
Characteristics - supports DDR333 of memory modules
- PIO, bus master, UDMA/100
- Desktop Managment interface
- modem/LAN Wake UP
- Microsoft® PC97/PC98 compatibly
- red plate

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Its not the best board to OC with and i havent tried it but you should be able to get a lil bit outta it, heres a lil beigneers guide to overlcoknig ive staretd to write, its not complete yet sorry

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"Please note that this is currently a WORK IN PROGRESS.

Well, first of all I'd better get the definitions out of the way. Overclocking is running a piece of computer hardware at a speed faster than it is designed to run at. Usually, Processors, Graphics Cards and memory are Overclocked. You may also occasionally here Overclocking referred to as Speed Margining. There are many Pro's and Con's of Overclocking.

Pro's -
Hardware runs faster
You get more for your money

Con's -
Component doesn't last as long
More heat created
No Warranty on Overclocked Components
Can reduce system stability

As you can see, the Con's heavily outweigh the Pro's, despite this, many Overclockers have 100% stable systems or as near as you get to this.

Processors are usually Overclocked from the BIOS whereas Graphics Cards can not be Overclocked from the BIOS and have to be Overclocked by a piece of software from the Operating System.

There are two ways you can Overclock a Processor. Either by raising the Front Side Bus (FSB) or by raising the Processors Multiplier (which will be referred to as Multi from now on.)

Processors Core Clock Speed = FSB x Multi

So, I have a Processor that has a FSB of 100 and a Multiplier of 5. It is a 500MHz Processor, simple! It is better to Overclock via the FSB because as you increase the FSB, you increase the memory bandwidth. However, Overlcoknig by raising the FSB can cause problems. As you raise the FSB, you increase the speed of the AGP slot and PCI slot. This can cause these to fial or not work properly. It can also cause Hard-Disk Drive corruption. The range of nForce 2 boards currently out all have a PCI and AGP lock so you can raise the FSB with out worrying about the FSB too much. However, at really high FSBs, the motherboard requires better North Bridge, South Bridge and Mosfet cooling (these will be expalined later on.)

What is the Front Side Bus?
The Front Side Bus (FSB) is the link on the motherboard between the Processor and Memory. So, the higher the FSB, the more bandwidth the Processor has and the faster your system will run.

What is a Multiplier lock?
Processor manufacturers lock the multiplier on the processor so that it can not be increased. This can be changed by physically modifing the Processor in a process known as unlocking. Again, this will be discussed later on.

Now that you know the basics of Overclocking I wil lintroduce a few new ideas. Lets say for example that you have a Processor that is clocked at 133 x 12.5 = 1666MHz. Also, lets say that this chip will only overclock to 1800MHz at 144 x 12.5. OK, so the Processor is faster but the memory bandwidth has not increased significantly and therefore not much difference will be noticed. To gain more memory bandwidth we could lower the Multi and then raise the FSB i.e. 166 x 10.5 = 1743. Although the Processor is 57MHz slower, the memory bandwidth providing you have PC2700 memory has increased by 600Mbps from the chips stock Core speed of 133 x 12.5. On boards that do not have a AGP/PCI lock, this would not be recommended as Hard-Disk Drive corruption can occur and damage to PCI cards which can cause severe system instability. Thus, on motherboards without a AGP/PCi lock it is better to Overclock via the Multi.

The Dangers of FSB Overclocking:
Eveon on nForce 2 board which have the advantage of an AGP/PCI lock high FSBs can still cause problems. These are mainly resultant of lack of motherboard cooling. There are two major chips on a motherboard, these are the North Bridge (NB) and South Bridge (SB) and without adequate coolnig these can overheat at high FSBs. The NB controls the processor, Memory and AGP slot and thus links the most major parts of the system that are vital to the way a computer runs. This means it does a lot of work. Nearly all modern motherboards either have a passive or active cooling on the NB but none have either on the SB as of yet. Passive cooling is simply a heatsink and some thermal paste. The thermal paste conducts heat and the heatsink draws the heat up and away from the chip. Active cooling would be using a fan as well to then blow the heat away from the heatsink. All modern processors need a heatsink anf fan attached and with the power of todays PCs, so do most NBs and even some SBs. At high FSBs, it is recommended you have active cooling cooling your NB and at least passive cooling on the motherobards SB. Another part of a computers motherboard that needs adequate cooling are the mosfets. These are the voltage regulators on the motherboard and as you Overclock higher the more voltage the Processor needs so these inevitably get hotter. Passive cooling is more than enough for mosfets although some do use passive cooling.

Cooling:
Without sufficient adequate cooling, the Processors life span will be shortened. With no heatsink and fan attached, an Athlon XP 1800+ will die in 3.5 seconds within you have pressing the power button. Thus, cooling is important and there are many factors that affect how well your cooling works from simple things like the qualtiy of the thermal paste used to the type of metal the heatsink uses and the power of its fan. I suggest before you buy a cooler for your Processor you look around at sites such as AnandTech or Toms Hardware Guide who occasionally do reviews of coolers. A cooler rated to an Athlon XP 2000+ will work on a higher chip to a certain extent because this is only recommend it, I strongly do not suggest you try it!

WORK IN PROGRESS"

That'll give you the absolute basics

Craig

[iman_zahari]

The website is http://www.sis.com/products/chipsets/oa/socketa/745.htm

[iman_zahari]

Here is a review http://www.ocworkbench.com/2002/msi/745ultra/745ultrap1.htm

[CCW]

i have edited second post (above) with more info in case you didnt notice :D

[iman_zahari]

A very good guide for beginners.

[CCW]

thanks, it should give you a basic insight into overclocking and things you should be aware of, enjoy! :D

[iman_zahari]

What is your occupation anyway??:confused:

[CCW]

"A 15 year old trying to keep up with todays technology" thats from my sig, im still at school but parttime (i.e. weekends and after school) im a computer engineer/technician

[iman_zahari]

:banana:

We are at the same age, man. I'm in Form 3. Planning to get straight a's in my PMR. So I gotta focus on my studies.

[CCW]

lol, well Welocme to the Xtreme, hope you get that thing OCed soon, btw - i came across XS by chance, signed up and havent regretted it since, these are good forums and its definetly worth staying :D

[iman_zahari]

:( My processor is still in warranty in Imbi Plaza, Malaysia. :( I have to wait three weeks to get it back. :p Anyway, I will stop and do my homework first. See you tomorrow at the same time. Thanks for all the help.

[sequoia464]

...I have had both an A and a B Tbred. The 'A' didn't want to run much past 1700MHz for me. That was on a tired KT133A board though, using three sticks of PC150. Not the ideal combination.

...If you look at the database at overclockers.com it shows 572 entries for the 1700+Tbred, the fastest 'A' that i saw was around 2200 using dry ice, some air cooled topped out around 2000 while most air cooled were in the 1800-1900MHz range. The 'B' steppings are running 2300-2400MHz with air, sometimes higher. The fastest B's are running 2600-2700, some even higher (these are probably using volt mods and exotic cooling).

[CCW]

Originally posted by sequoia464
The fastest B's are running 2600-2700, some even higher (these are probably using volt mods and exotic cooling).

avergae seems to be 2.3 - 2.4 but 2.5 and 2.6 arent uncom,mon on the newer dated chips, Mr Viggen managed to get his past 3GHz (of course he is a talented guy unlike me!)

i havent tried really tried to see how far mine will go atm, only at 2145 :D

Craig

[iman_zahari]

Anyway, is the Coolermaster Xdream http://www.coolermaster.com.hk/product_detail.asp?lang=eng&at=boutique&category_id=1&product_id=5
capable of overclocking my cpu to 2000mhz

[Tweaked!]

The earlier tbred "A"s ran at much higher voltages, so that along with the fact that they were the early technology of the new tbred style, kept them from reaching the o/cs that the newer tbred "b"s are capable of. An average o/c out of that 1700 I would have to say would be in the range of 1700 to 1900mhz.

[sequoia464]

...If you are set on a coolermaster, look at the new AERO 7 that is just now coming out. The reviews on it are pretty good. I don't know anything about the one that you referenced though. I have a Thermalright SLK700 on order and currently using a Thermalright AX7.

[Tweaked!]

iman_zahari, 1st off, Welcome to Xtreme, sorry I forgot to mention that on my last post.

2nd, That coolermaster hsf in my opinion would not be a very good choice for o/cing. You're going to want to find something pure copper. Aluminum hsf's are not capable of handle and dispersing the amount of heat produced by these Amd chips once o/ced. They would be a decent choice for a non-o/ced chip, but a better choice would be the Volcano 11 (http://nexfan.com/thvo11coxp34.html), or the Slk800 (http://www.svcompucycle.com/thslsocob.html):D

[CCW]

that coolermaster x-dream looks like the VOlcano 11, just wont cool as good, as they are right, copper conducts heat better than any other metal (except silver but who can afford that? :D) so you will wantan all copper HSF with a high CFM fan.

this will be noisy, maybe a few case fans :D

Craig

[STEvil]

Dr. Thermal TiV86.,.. or whatever its called.

I've got one of those and a 50cfm 80mm sunon for 48c load at 2253mhz 2.0v.

[CCW]

GlobalWin CAK-88T - That should do the job ;)

[iman_zahari]

How is the price. How much will it cost. :eek:

[CCW]

Originally posted by iman_zahari
How is the price. How much will it cost. :eek:

http://www.over-clock.co.uk/acatalog/Globalwin_CPU_Coolers.html

you'll also want good thermal paste like arctic silver 3:
http://www.over-clock.co.uk/acatalog/copy_of_Thermal_Compounds.html

[iman_zahari]

Wow!!!!!!!!!!. That is a quite of price. I think I can't afford it since I'm a student. Sorry guys.

[CCW]

There are cheaper available, thats just the one i suggested, will get u a link

[CCW]

http://www.overclock.co.uk/customer/home.php?cat=250


lots of coolers there, just look throught for a cooper one rated a bit higher than ur processor, with a high CFM fan :D