So it's just a case of me changing the BIOS from auto to 133? Does it really not matter what I get, surely there is some difference? I would still like one 128MB stick instead of two 64's! -----Original Message----- From: Tom Brinkman [mailto:[EMAIL PROTECTED]] Sent: 11 September 2001 14:24 To: [EMAIL PROTECTED] Subject: Re: [newbie] RAM: How much is enough? On Tuesday 11 September 2001 04:47 am, Adrian Lynch escribi�: > Speaking of RAM, I hope nobody minds me slating a PC company, but it > needs to be said. I bought a PC from Evesham a while back, it should > have come with 128Mb PC133 SDRAM, just opened it up lastnight, and > what do I find? Two 64Mb chips, one PC133 the other PC100. > Whats the point of giving me a mix of the two if the lower one brings > the higher one down? It doesn't "bring[s] the higher one down". pc66, pc100, and pc133 are mostly nothin more than marketing labels. What is important is the nano second rating (ns) and the cas latency rating (CL), and of course the quality and design of the PCB the ram chips are on. The pcxxx label is practically meaningless. A rough gauge is that the ram should be 1000/133.3 = 7.5ns to run at 133.3mhz. Better 133mhz ram will also be non-ECC, and CL2. BUT most ram sold under the pc133 marketing label is 8ns (really 125mhz), CL3, on less than the best quality/design PCB. Bottom line is ram is what'll do, according to what you set it to with bios settings. I've had ancient 66mhz ram, before the pc<whatever> labels were invented, that would run reliably at 112mhz, CL3. I've been using an old 128mb stick of 8ns CL2 ram (pc100) flawlessly for years at 135mhz CL2. It's in my system right now mixed with 2 other sticks of pc133, all running together at 135mhz CL2 with -0- errors. -- Tom Brinkman Galveston Bay
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