667Mhz RAM for a processor with 533Mhz FSB?
912711
a few systems will not allow you to use faster RAM\nalso ram will only operate at the slowest of Ram or BUSS speed
598867
if both cpu's are 478 pin and by 533 Mhz you mean the Fornt Side Bus...a 533 Mhz FBS cpu will NOT work on a 400 Mhz FSB motherboard even though the cpu is a 478 pin....the computer will not start up.
789590
.\nAt the site Crucial.com \nthey have a cool tool that will tell you \nexactly the kind of RAM you need for your system and how much you can add.\nIt's free...\nthey hope you will buy your ram from them...and I do recommend their product.\n\nk.
16151
Try dealram.com, it's a price search engine specializing in RAM.
831990
333mhgz is the problem get that upto 1999 then it will be more fast and add 1 or 2gb of ram 256 mb is low
400274
For now just stick with 1gb but if your budget allows it i would upgrade to a better processor amdathlon 64 at least
928113
I would look for an Intel Core 2 Solo 2.0 GHz, with 512 MB of RAM
817072
you can add a DDR400 to a DDR333 as long as the two RAMs are of the same size, ie., 512 MB each for example. there will be a speed mismatch and nothing else.
490790
the main thing is ... at least 512 RAM, if not 1 GB\n\neverything else should be OK
427894
Your mother board's very old, you won't see a large boost in performance by putting in new RAM I wouldn't think.  It can only up to 1.55 GB at a slower speed.\n\nFrom the source website:\n\nSYSTEM MEMORY: \n3 X  DIMM sockets \nMax. 1.55GB   PC133/VC133 non-ECC SDRAM
1147532
You have not stated WHAT ram slots your Motherboard has.\nGuessing by the PII 333, I would say SDRAM, the older style.\nThe newer style, DDR ram, is able to use 2 cards of ram at the\nsame time - one can read, the other can write, so that 2 cards\nof identical ram will add speed to the motherboard ram system.\nSDRAM will not add speed to your ramm system by using two identical cards - MORE ram will certainly help.\n You really should find out what the motherboard is, and go on the website to the manufacturer ( ASUS, etc. ) and get the manual PDF file, and read what ram your computer uses, at what speed.\n ( All ram comes in sizes, and SPEEDs, so that you would waste money buying faster RAM speeds than your motherboard can use ).\n The SDRAM and the DDR ram slots are slighlty different, and\nsome newer boards have both - SD is usually about 3.3 VOLTS\nwhich is clearly, but microscopically written on the edge of the ram plastic holder, about the middle of one edge on the top, and\nthe PINS are marked clearly, but microscopically on the ends from 1 to 168 pins. The DDR, is usually about 2.1 volts, and again, is clearly but microscopically marked on the plastic...\n Don;t buy any ram unless you first find out what ram sticks are allowed by the motherboard, and exactly what speed is allowed.\nIf the motherboard only sees 3 , 128 meg, PC100 ( speed ) ram\nsticks and you buy , 3 , 256, PC 133 sticks, your motherboard can happily "see" 3 128 meg sticks ( and stop counting ), and\nstate that they are running at PC 100 speed ( that is all the motherboard can do ), and you are wasting a lot of money on\nextra ram and speed that you are not using!\n There are other issues with ram, in that there are hundreds of manufactuerers, and although the amount ( 128 Meg ) and\nthe speed ( PC100 ) may be the same, the manufactuerers \ncan arrange the ram chips on 1 or 2 sides of the chip, in sets of 2 BIT rows by 64, 4 bit rows by 32, 8 bits by 64, etc. etc. and the\nram card you buy may not work in " YOUR " computer, even though it meets the Size/Speed requirements.... \n I often take the tower into a computer store, put it on the counter, and ask the salesperson to put in the ram I am buying, and\ntest it on a monitor. Sometimes I have to get 3 sticks of ram to find one that actually works...  \n Some salespeople actually build the units, and know as a rule of thumb, the "kind" of ram that fits a certain motherboard, but the best bet is to actually try the ram in the first place... There is an\nexception to every rule...\n\nHope this helps\n\nrobin
536868
In some cases it matters but with older ram not really. As long as your motherboard supports the speeds it's okay. You computer will take the speed of the slower ram though. So if one ram speed is 133 and the other is 100 both sticks will run at 100
622992
You might need more RAM
747369
if ur machine is limited to 2100 then it should work but will run at 2100 speeds unless you overclock .... i wouldnt mix up the ram though ... if ur getting a gig of 2700 try it by itself without the old stuff in ... if its not stable u may need to bump the ram volts a  .1 or so up if ur bios allows it ...
257683
Your CPU is a Socket 478 with a 400MHz FSB. You'd need to find a Pentium that fits that socket and uses a 400MHz FSB. Your upgrade options are limited because it is an older socket. An upgrade for your CPU would be about $100 for a 2.0GHz P4, but the benefits probably aren't going to be anything to write home about. I personnaly don't think it's worth the trouble. Save up and buy a new motherboard and CPU.
999927
Agreed..... check out the crucial web site and find out exactly what kind of RAM your computer will support.  But even if it says you can use the two sticks you already have, you could have some other compatibility issues.\n\nThe 512MB may be 333MHz instead of 266Mhz like the 256 stick.  Even if you could run them together, the different frequencies could be a problem.  Your computer might run at the slower frequency (if, in fact, the 512 has a different frequency, is  it also backwards compatibile.  Meaning, will it actually work at a slower frequency.)\n\nThe second issue is whether or not your computer will accept two different RAMs or do they have to be the same (in pairs.)  If the computer will accept different RAMs, make sure to check if they need to be installed in any particular order.  Some computers require that the largest stick be placed in slot # 1, the next largest in slot # 2, etc.\n\nAnd finally,find out if your new computer's warranty will remain in effect if you choose to deviate from the manufacturer's specs.  Nothing worse than spending big bucks on a computer, violating specs, needing repairs, and spending more on the repairs than you did on the whole computer because you trashed your warranty trying to save a few bucks.
386957
There might be, but it makes no sense.\n\n550 MHz is glacially slow.  You will have to upgrade most of your system, including the motherboard, CPU, and RAM, to get anywhere near today's standards for performance.