question needs answer

[Linda91]

What exactly is in a PentiumIII 800 that is not in a PIII 700? They both have the same transistor count & the same voltage. I cannot believe the price difference when the only real difference is the printout on the cpu! What makes the faster chip different from the slightly slower one?

[OuTpaTienT]

Nothing at all most likely.

When Intel or AMD or whoever, makes CPUs they don't make a specific speed. That is determined after that chips are made. They test them to find out what is the highest speed they can handle and remain stable. Then they mark the CPU's rated speed as usually a notch down from it's fastest tested speed (to give it some headroom).

Example, a CPU comes off the line and it reliably runs at 900mhz but becomes unstable at 950mhz. Odds are the maker would mark that an 800mhz CPU and sell it as such. However, often the market demand is also taken into account. For example, if there was a large demand for 600-700mhz CPUs, then the manufacturer might very well mark that same CPU as a 700mhz.

Any of that make sense?

[Mykex]

The only answer I can come up with is one came from a batch that tested as stable at 700 and the other from a batch that tested stable at 800. Other than that there is an excelent chance that there is no difference.

Must learn to type faster Outpatient beat me lol


[This message has been edited by Mykex (edited 12-02-2000).]

[M_Six]

About two milliseconds of performance.

Dodge makes a car called the Viper. It has a huge engine that produces outrageous horsepower. It's useless in most all of the United States, but it sells like hotcakes. Why? Because some folks just have to have the most powerful engine out there.

The drive for faster and faster processors comes almost exclusively from games. Computer games keep getting more and more sophisticated and need the high end processors. If you don't play high-end games, buy the slower processor and put the money you save into more RAM. There's no substitute for more memory.

[big_block_buick]

hi linda; in your first post i replied that your current pc was going to seem slower the more you use it.i didnt think that time would be so soon lol.

[Richard_Cranium72]

Processor speed is only one of the several items that make a computer fast, or Not.

Items like FSB(Front Side Bus) are as important if not more so than Processor speed.

A couple of threads lately have pointed to the discrepancy of computers and CPU speeds.

One machine with a faster processor can in some cases be much slower than another with a slower cpu.

For example, My HP K62-333 seems terribly slow in comparison to another machine with a Pentium II 300 processor, reason the FSB on the HP is 66mhz and the Pentium II is 100mhz.

Many other variables come into play also.

A unit here with a AMD K6-2 400mhz cpu is much faster than another with a K6-2 475.

Reason, the 475 unit is an IBM and the 400 is home built.

The IBM is loaded with all kinds of useless software bogging the system and the Homebuilt is streamlined with only the software that the end user wishes to have.

so much drivel I need a bib
http://sysopt.earthweb.com/forum/smile.gif
DrVette

a coulpe of links to assist, hopefully-->>
http://www.ugeek.com/glossary/glossary_search.htm
http://homepages.enterprise.net/jenko/Glossary/G.htm
http://www.pctechguide.com/
http://www.sharpened.net/glossary/index.php
http://www.computeruser.com/resources/dictionary/dictionary.html
http://www.wwwebfx.com/wwwgloss.htm

[bdunn]

The speed and multiplier are definately both important. I run a k62/500. It runs at 6* 83 rather than the traditional 5*100. I have an older MB that doesn't do 100. Also the PCI bus is slightly overclocked because 83/2 is a lil faster than 33.

Other things include hard drive speed. Just replacing a 5400rpm dirve with a 7200rpm one will make things seem faster.

[gyoung]

All the things above are valid, but the actual difference between the 700 and 800 chips are the clock multiplier.

If both are intended to run on a 100Mhz bus then the clock multipliers on the chip are 7 and 8 respectively. Intel actually modifies their chips to have a specific clock multiplier.


[This message has been edited by gyoung (edited 12-04-2000).]