BIOS Strangeness 33 replies

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jedi_knight

I will create the future...

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10th December 2003

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#1 13 years ago

Right you'll probably laugh at this. My processor at home is an AthlonXP 2400+ and I looked at the properties of my system and the computer said it was running at 1.5Ghz. Odd, I thought, shouldn't it be running nearer 2.4Ghz? So... I entered BIOS and went to the Frequency/Clock option and saw that it was set at 100Mhz. I then altered it to 160Mhz, saved and then exited. It crashed!:bawl: So, opened up the case and popped the CMOS battery out. Put it back in and powered up the PC again. CMOS Error, well it's to be expected. I took the battery out. Duh! Loaded High Performance Settings and went to the Frequency/Clock option altered it this time to 140Mhz. Saved and Exited. Windows booted up. Entered system properties again... :lol: This time the system said the chip was running at 2.14Ghz! Sweeet! What speed is the AMD AthlonXP 2400+ supposed to run at anyway? Hope I haven't overclocked it... :uhm:




Dreadnought[DK] VIP Member

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7th March 2003

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#2 13 years ago

*moved*




Σl.Ðestructo

People say I post too much

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#3 13 years ago

I think 2400+ is supposed to bew 1.9 or 2 ghz, because i have had bot an 1800+ which runs at 1.5 and a 2000+ @ 1.84 or sumthing. The 2000+ is OCed to 2ghz and when it is set at that, windows says i have a 2600+. What you did is the same, in effect, overclocked.

I'm not entirely sure about the numbers, but I do know that the default speed is usually the speed the processor is supposed to run at, unless you have an older MB that can't handle it. I think the 2400+ etc is just a model number, not really directed at the speed of the chip, but more a guideline of the equivalent pentium or celeron processor.




jedi_knight

I will create the future...

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10th December 2003

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#4 13 years ago

Well why don't they say what speed it is then?!

So if I put the speed up any futher I'll run the risk of burning out my chip? Would it be safe to bring the speed down slightly then to avoid burning it out?




Nemmerle Forum Mod

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26th May 2003

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#5 13 years ago
jedi_knightWell why don't they say what speed it is then?!

Well since they decided to be pricks when putting the speed on the chips I'll try and explain. When making the chips it was decided that just telling you the clock speed (IE the GHZ) was misleading because it didn’t really take into account chip architecture (they wanted to make their stuff look better than it was) so they ran some complicated equations to fudge the numbers and decided that their 2.0 GHZ chips should be called a 2400 because it ran as fast as some other chip which had a 2.4 GHZ clock speed (basically they picked a number out of thin air)

Basically a 2400 is just a name and has little bearing on the clock speed of the chip being just something they placed on it in a marketing attempt to fool the ignorant into thinking they were buying better stuff than they actually were.

Or to give you the official line "The clock speed of the chip in these times can no longer accurately represent the speed of the chip when the architecture and general performance of the components is taken into consideration. Therefore we have decided to structure it against a baseline so as to give consumers a clearer choice when deciding on a chip" :lol:




jedi_knight

I will create the future...

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#6 13 years ago

So... What number of Mhz do I need to set the clock speed at to get it to 2.0Ghz. Cos I don't want to burn me processor out. What would be a safe speed to set it at?




Nemmerle Forum Mod

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#7 13 years ago

Hmm, I'm not very good at explaining this am I? Set the external clock to 166 MHz and the Multiplier factor to 12.5 This should give you a CPU internal Frequency of 2083 MHz which is what I set our 2400s to and it seems stable enough.




jedi_knight

I will create the future...

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10th December 2003

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#8 13 years ago

No, your explaination was very good. I'm new to this so I'm afraid you'll have to bear with me on this.

What's a Multiplier factor?




Nemmerle Forum Mod

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#9 13 years ago

The Multiplier factor is used by the BIOS to determine what multiple of the External clock setting is used by the chip to get its internal frequency.

Edit:

When you read it off your BIOS it's brobably got something like this CPU internal freq 2083 MHz (166 * 12.5) With different numbers of course. Which breaks down like this CPU internal freq {Speed here} MHz (External Clock * Multiplier Factor)




jedi_knight

I will create the future...

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#10 13 years ago

Could you post a screenshot so I can see what to alter?