My frens told me ifmy stock ram is 533Mhz and if i upgrade to 1gb 667 mhz ram, it will spoil in long term? How true is this? I am using laptop btw. Any sifus care to explain?

If you put a 667 ram into a 533 slot it'll downlock and nothing is damaged. I even used a 667 mhz RAM into a 533 mhz RAM slot before and it's fine.

nothing last forever dude
but for sure, it will works(667mhz ram) at 266(533mhz) only

I think that too. I explain that to him but then he counter attack by saying that although the ram will downclock but it will the ram will keep pushing to 667mhz whenever you start your lappie? anyone can clarify these?

NO, it will run at slowest of them two, no damage taken, I've been mixing different RAM speeds and timing without them even dying (DDR, SD RAM etc). If he still arguing slap your laptop to his face real hard

If ur fren happen to be a computer salesman, said to him loud and clearly, "Don't you ever try to CON me by buying more expensive DDR533 ram than DDR667 ram~!!!" + this faces

Hehehe...

tat is absolutely myth, ur friend may not know much about hardware, but act like he knowing alot (just like Mr. Wall-talker).

u can use the 667mhz memory, but, from wat i saw in the technical support section, alot of user whose mobo (in ur case, laptop) support highest 533mhz ram, there faced problem with their RAM timing when use with 667mhz ram, and often cause instability. they finally have to adjust the timing manually.

It wont damage at all, if you scare, just switch the setting at bios to run at 533 spd, 667mhz ram is having the configuration of 200mhz,266mhz,333mhz settings. means it can run on either one of those 3, not tied up at 333mhz

It will blow up your system, because someone told me so.

http://www.jedec.org/download/search/JESD79-2C.pdf

Geez, read the whitepapers and working group papers will ya?

my home athlon xp, the mobo only support 333MHz ram. i fix it with 1G DDR400 (OC the cpu and bus speed some more) and it run for a year plus already, but still alive and kicking.

for DDR2, i never try b4. but can see alot of user suffering some issue when they plug in higher speed RAM. but was solved when the timing was adjusted perfectly. maybe their pc will blow after sometime, shuld pm them after a year or 2.

That was sarcasm.

Read the part on initialization and mode select. Anyways the only thing that changes is the rate at which the clock signal is given. I don't see how it'll blow up anything.

simple Question u ask him buy ferari drive 50 on the road with kancil will rosak or not........... slap your friend face la...... kkaka

Wa..empire23 u dun scare me man...So true or false?

majority of laptop BIOS cant adjust timing manually. in this case, i dont think it is a good idea to get a 667mhz for ur laptop, unless if u can bring it to the shop there and the shop keeper is kind enough to swap it with a 533 if the 667 couldnt work.

It is in my lappie now.

This post has been edited by nightzstar: Jun 9 2007, 08:51 PM

Ram, long term spoilt? if it doesn't work, probably it will not work in the 1st place. So it's a myth.

Should be no problem for the faster ram to run at 1 step slower speed. so the 667 should be ok.

The other concern is Dual Channel issue. Dual channel will only work if you have identical ram sticks. So if you have inside your lappy one 533 module,and you add another 667, you get bigger capacity, but maybe lose abit of speed advantage, but maybe not noticeable .

good for u. got test for stability?

I think nope, it juz get better. nothing to spoil..

uhm, TS, mind to say out your laptop specs?
and if I recall correctly, no laptop in the mean time does neeed DDR533 either, even the latest Santa Rosa have 800mhz bus speed only need DDR400, so the ram manufacture need to produce new DDR2 with frequency DDR400 to match the proc? In case the DDR533 ram run at DDR1066 will ruin the laptop?

Sure it is not true. I guess many of you did not get empire23's joke there.
Read the Jedec whitepaper which he sent you the link, there will not be any damage.

If your know it all friend keep telling you arguing that it will be permanently damaged, then just tell him that ya, someone even told you that your lappy will become like a time bomb, explode any time.

Oic,,I got TARPED in the interwub... Lolx..... Thanks for all da clarification. Any software to test the ram stability for lappie?

For laptop, manufacturer most likely use the CHEAPEST, WIDELY AVAILABLE PARTS to make even on the package.

Thus, giving u 533 DDR2, and mind you, have u ever receive 1GB in single SO-DIMM but 2*512MB SO-DIMM? Again, it's cheaper that way, to the manufacturer, not to end user.

As for spoil, what will spoil? The whole laptop? Any good explanation to support that? Believe in proofs, not Kopitiam crapcocktalk.

It's all depend on your laptop chipset presets. Most OEM laptop's BIOS got minimal option, and worse, my VAIO can only let it ar SPD, can't OC, can't manipulate.

The thing is, it's using a VIA Apollo-derived 266MHz chipset. I've been using DDR333 for more than 4 years... still going strong

so, did this life testimony debunked your friend's crapcocktalk?

u've got it http://www.memtest.org/, run it as long as u can. by the way, wat d u mean by TARPED in the interwub?

If something will go wrong.. then why the hell people still overclock them? back in the days when DDR333 runs at DDR500 24/7 for months, isn't that even more torturing?

tell ur friend to read more before insisting that he's correct

Thanks da ladies and gentlemen,i got clear understanding liao.

@edwin, mean that i get tricked in internet lol..

From what I remembered, DDR667 is no different to DDR533, as instead of running on 1:1, it can run quite happily on 4:3, which is better to overclocker as they can change that and overclock quite high compared to the DDR533

looks like its a myth only

my athlonXP system also installed with DDR333 and DDR400 together. i cant boot into WinXP, unless i manually lock the RAM speed at DDR333.