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RAM Question for the computer wizzes

i originally had 192 mb (128 + 64) of PC-100 SDRAM in my machine. my bus speed is 100mhz. my friend gave me 128 mb sdram PC-133. i installed it in my computer.

should there be a problem with the discrepency in the type of ram (100/133)? is it ok to install PC-133 in my machine with a bus speed of 100mhz?

i've noticed that since i put the PC-133 module in, my system has been running a little strangely.

there should be no problem as the 133 ram will work at 100, its max speed is 133. what do you mean by your system running strangely?


Jon

quote:

Originally posted by jonsimmonds ...what do you mean by your system running strangely?

well...it is running almost like i have less RAM. i had 192 and now i have 256. when running several apps and switching between them, things seem to be slow. also, when using winamp while other apps are running, the sound sometimes starts to chop. this didn't often happen when i had the original 128 BM installed.

I had a similar problem, I found a problem called cacheman, had a play with the settings and it ran fine.

LINK



there are some wizards in there which ask you how you use ur pc etc, run them if your not sure what you are doing.

Jon

i have an solution : yank out that crap that ur 'friend' gave u and sell it, then put ur old 64mb back in, problem solved.

easy way to see if the ram runs fine in your comp... pull out all the sticks and only install the new one. if it is ok then things are jusat messed up 'software-side' which is unlikely since it just changed when you got the new stick. Maybe its just shitty ram. you know, poor quality ram may be VERY poor quality and sometimes it wont work as it should.

-Marc

sell the 133 for a 100 or vice verse, it isnt good to mix em, it lowers potential performance. Check out www.pricewatch.com RAM is cheap as hell.

I have the same problem...but no biggie.
If you bus speed is @ 100 , that's the highest it will run at..
All the rams will run at the speed of the slowest ram....
But about this problem, i'm not sure what to do...

I take it you have an old computer. If your proccessor is upto about 400mhz (3-4 years old) it wont be able to run 133mhz ram. I was told this when i bought ram. Its because of the motherboard. So you dont want to update that. The differemnce between 133 and 100 is not that great. I am not suprised the 133 does not work. Most people dont realise that there is any difference, they think ram is ram. Well your computer is obviously not even using the new ram because when you computer was made it didnt exist.

So my advice is get 100mhz ram. Or get a new computerm they r cheap now. Very cheap. If you are running on something less than a gig processor then catch up. You will find it hard to believe you lived without it.

But yeah just get 100mhz ram. You computer doesnt like the 133mhz. Or get a new motherboard But ram is about �18 for 128mb so the ram is the cheaper option

quote:

Originally posted by flystyler I take it you have an old computer. If your proccessor is upto about 600mhz it wont be able to run 133mhz ram. I was told this when i bought ram. Its because of the motherboard. So you dont want to update that. The differemnce between 133 and 100 is not that great. I am not suprised the 133 does not work. Most people dont realise that there is any difference, they think ram is ram. Well your computer is obviously not even using the new ram because when you computer was made it didnt exist.

how can i be sure that the ram is not working. when i installed it and then rebooted, the ram was detected. i was able to see the count during the reboot. it went to the proper amount that it should have. doesn't this mean that the ram is working...or does it just mean that the rem has been detected?

Well it should detect it, but it wont function properly. So my advice would be to swap it for 100mhz. That will run fine. Although i didnt find that 128mb made a lot of difference anyway, coz i had a crap processor

Now i have 1.4ghz processor with 512mb ddr ram That is fast enough for me

It could be that the 133 ram chip is not as good quality as the ram you curently have installed.

In my case ive got a 64 and 128 mg pc100 ram and 256 in pc133 and my mothorboard can only operate at 100 mhz i.e pc100 speed. It could also be your mothorboard not likeing the pc133 ram which means theres nouthing you can do.

Jon

quote:

Originally posted by flystyler I take it you have an old computer. If your proccessor is upto about 600mhz it wont be able to run 133mhz ram. I was told this when i bought ram. Its because of the motherboard. So you dont want to update that. The differemnce between 133 and 100 is not that great. I am not suprised the 133 does not work. Most people dont realise that there is any difference, they think ram is ram. Well your computer is obviously not even using the new ram because when you computer was made it didnt exist.

ok, that is a little off
PC133 ram is no different than pc100 ram, apart from being able to operate at a higher frequency.

now to the problem:
if the new ram works by itself and you can run windows fine with it, but you have a problem with both sticks, there might be an incompatibility between the modules (that happens sometimes) Mobo manufaturers give you a list of 'recommended ram configurations' you might want to look into your mobo manual and look what they say. You might also want to go into your BIOS and set all your ram to run at 100MHz, instead of 'by spd', which means that your motherboard will force all your ran to run at 100 MHz, otherwise it might have a little problem with the two different speed modules

quote:

Originally posted by drizzt81 ok, that ^^ is total BS.. no offense, but if you have no clue what you are talking about, just do not say it.. PC133 ram is no different than pc100 ram, but it is able to operate at a higher frequency.

Sorry to be honest i dont really deal with 133 and 100 ram now, i use ddr ram. Much much quicker. But i have gto 100mhz in my shitty comp. And the man who i was going to buy the new ram off told me. "If your comp is older than 3-4 years old get the 100mhz ram, you wouldnt really notice the difference anyway, and the 133 may not work properly"

Now normally this guy knows what he is talkin about, and has helped me build a few computers, and fix many. So please before you say i am talkin bullshit read what i say.

There can be conflicts with old 133mhz ram in old computers. And this is what happened with rockster77 . I can garuntee if he got 100mhz ram it would work. But to be honest 128mhz did make a lot of difference in my computer with the 400mhz processor. Remember a computer is only as quick as it slowest component.

quote:

Originally posted by flystyler Sorry to be honest i dont really deal with 133 and 100 ram now, i use ddr ram. Much much quicker. But i have gto 100mhz in my shitty comp. And the man who i was going to buy the new ram off told me. "If your comp is older than 2 years old get the 100mhz ram, you wouldnt really notice the difference anyway, and the 133 may not work properly" Now normally this guy knows what he is talkin about, and has helped me build a few computers, and fix many. So please before you say i am talkin bullshit read what i say. There can be conflicts with old 133mhz ram in old computers. And this is what happened with rockster77 . I can garuntee if he got 100mhz ram it would work. But to be honest 128mh or ram didnt make a lot of difference in my computer with the 400mhz processor. Remember a computer is only as quick as it slowest component.

Do not argue with Fly, he knows prolly the most about compz on this board FULL STOP .

quote:

Originally posted by Project T Do not argue with Fly, he knows prolly the most about compz on this board FULL STOP .

i kinda doubt that, but i shall just shut up now...
sorry for insulting ja fly, it was not intended that way.. editing post now

quote:

Originally posted by Project T Do not argue with Fly, he knows prolly the most about compz on this board FULL STOP .

Well i wouldnt go that far, but my mate who runs a fairly succesful small computer company will know, so i usually ask him if i dont no. But we kinda learnt together, so normally we ask each other if we r stuck

I dont suppose anybody knows away i can change one of the jumper settings on my motherboard so that my processor can run at full speed. I had to flash the bios anyway due to the fact that it was not built for a 1.4ghz. We download the update and flashed it. But we forgot to change the jumper setting. Now XP wants to be reformatted and reinstalled to accpet the change. One major prob with win XP. The only thing that XP proffesional lets you change is ram, and i think plug and play devices, and USB devices obviosuly. But i dont like the idea that you can't put a new hard drive in, or change jumper settings on the motherboard without it asking to be reformated. You will find out when it comes to it . So now my processor is running at 1.2ghz instead of 1.4ghz. Still pritty fast though.

Anyway i dont no anything about comps, so i will shut up now

In my experience underclocking RAM isnt a problem, I've got 256MB pc133 in a couple of OLD pc's, a P200 and a PII 333 both @ 66mhz fsb (half the speed the RAM is capable of) and they run absolutely fine. In my bro's Duron 750 I've put 2x128MB sticks one pc100 and one of pc133, and that runs absolutely fine @ 100mhz fsb.
I think the problem might be different brands of RAM being slightly incompatible (for example PQI I have found is not compatible with many other types of RAM).

Flyster, what mobo have you got? check maufaturers website for details etc. or try posting in an "overclockers" forum , I use a couple and have found the other users to be very knowledgeable, and very helpful on a couple of problems I have had, heres the ones I use the overclocking store or overclockers UK ya never know you might be able to get ur 1.4Ghz upto 1.6Ghz, standard o/c for a 1.4 T'bird

quote:

Originally posted by skattrd Flyster, what mobo have you got? check maufaturers website for details etc. or try posting in an "overclockers" forum , I use a couple and have found the other users to be very knowledgeable, and very helpful on a couple of problems I have had, heres the ones I use the overclocking store or overclockers UK ya never know you might be able to get ur 1.4Ghz upto 1.6Ghz, standard o/c for a 1.4 T'bird

No i know how to over clock, you can do it with a pencil, but i dont see the poihnt, it messes up my warranty, and will mean the processor could have a shorter life. I have read up on this a bit.

All i need to do is change a jumper setting on the mobo, tells me how to do it in the manual, but when i do it xp says that i have made a change and i need to reinstal windows, and i cant be arsed, so i am going to wait until i need to reformat then do it. Thanx for the help anyway mate

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