Hi all,
First post here, so, please, be gentile.

Back in 2003, I bought myself a system. I had a friend of mine who knew more about hardware than me make me a shopping list and then I bought the parts and put the computer together myself (that much, I knew I could do). Now, I'm looking to extract a little more out of what I have, since it's starting to get pretty old. Which brings me to a few questions:

Unfortunately, I don't remember which processor it was that I bought--I could've sworn for the longest time that I bought the Athlon XP 2800+, but after reading some things about it on various websites, I realize that the 2800 is supposed to be running at 2.25Ghz. Unfortunately, mine is showing it's only running at 1.25Ghz at the moment. So, then I started to think that maybe I was mistaken and got the 1800+ instead, and after checking some more out on that, I understand that's supposed to be running at 1533Mhz--still higher than I'm running. After doing some more reasearch, I realized that it is possible that I have the 2800+ in there after all, since it seems like it can run on the motherboard I have--MSI K7N2 Delta Series (DDR Dual Channel 400, FSB 400 edition). So, my first question is; even though I've lost all information regarding my purchase, and really don't have a clue what type of processor is in my machine (stupid, I know), is there some easy way to find out which model processor I have without having to open the case up and remove the heat sink, etc.?

My next question is actually regarding the performance I'm getting from my CPU. If in fact it is a 2800+ -- which I still presume it to be, why would I bet getting such low performance out of it? No matter if I set it to either 166 Mhz FSB or 200 Mhz, it still runs at relatively the same speed (only a few hundred Mhz difference, if I remember correctly). Also, if I go into the multiplier settings and try to change it from 'hardware defaults' (which I read was 12.5 for the 2800+), or whatever it's called, to 13x (the max my BIOS will let it go to), I drop way down to running at only 500Mhz.

If anyone's curious what I'm running for RAM, I originally had Corsair CMX512-2700LL (TWINX XMS PC2700), but now I have cheapo stuff that I picked up from CompUSA while my Corsair DIMMs are back for an RMA. However, the clock speed is not running any slower now than when I had the Corsair in there.

So, I'd greatly appreciate any advice or anything anyone has to offer, or places to look into for more information, etc. I'm happy to offer any more information I can to help diagnose the situation too.

Thanks,
-Chris

edit: I forgot to mention that I posted it here in this forum, because I would like to overclock it once I get the basics figured out. So, if it's deemed inappropriate for this forum, I apologize.

download CPU-Z it should give you the exact model number.

Ok, downloaded CPU-Z and ran it. Tells me it's Barton, which is something, I guess, but Brand ID is blank. I see it's only running at 100.2 Mhz FSB, though--and that's something curious.

-Chris

You've got a socket A system, which means that your upgrade path is very limited. If you bought a 2800 then you're basically at the top of your capability for that platform.

If your FSB is only 100 MHz, then you've got a serious performance deficiency. If it is a Barton, it should be running at a FSB of 333 or 400 effective. I don't know if that is 166/200 bidirectional or 333/400 actual though. Try updating your BIOS and messing with the settings. The downclocking MIGHT be a function of cheap ram also.

how long have you been running that at 100mhz??!

pump the FSB up and watch it fly.. no need to upgrade anymore.

I believe that's normal, as it runs in quad data rate i think. Can anyone confirm this?

I have a computer with an Athlon XP 2800+
They run at ~2091 mhz stock.

Yeah, I'd think it'd be reading a FSB of AT LEAST 166 (since that's what it's set to in the BIOS) resulting in a 333Mhz overall.

According to MSI's Live Update Live BIOS, I've got the latest version--(Phoenix) 7.80

Hopefully, I'll get the RAM back from Corsair pretty soon too, so I can get back to Dual Channel--the new RAM doesn't support Dual Channel. Would the fact that this RAM doesn't support Dual Channel affect the clock speeds?

Thanks for your help.
-Chris

I don't believe so, the dual channel will just increase the performance of the system it won't affect clock rates.

PC2700 is for FSB 133Mhz
Maybe your board detects the speed of your memory and does not allow you to change it (by changing FSB speed).
Try FSB 133Mhz. 166 and 200 will not work with your RAM if it is on syncronous mode. I don't know if your board has this option in BIOS.
Also try to set it to assynchronous mode and make FSB running at 166Mhz.
In last place I advice you to try DDR 3200 (333Mhz) and set FSB to 166Mhz.
Hope it helped in something.

Yeah, that's one of the problems, I think, I've got the FSB at 166Mhz in the BIOS, but it's only running at 100Mhz.

I'm not sure how long it's been like that, but I'm quite sure I've only been running at 1.25Ghz as long as I've had the computer (3 years now).

My CPU-Z readout is exactly the same with the exception of Core Speed, FSB, and Bus Speed. What's the RAM you're running?

Thanks for everyone's help.
-Chris

My CPU-Z readout is exactly the same with the exception of Core Speed, FSB, and Bus Speed. What's the RAM you're running?

Thanks for everyone's help.
-Chris

Its running on just value RAM (Samsung) DDR333.

You're off by 1. PC2100 is fsb 133 MHz. PC2700 is FSB 166, and PC3200 is fsb 200MHz.

I'd recommend setting RAM and FSB speeds to AUTO in the bios.