Is it normal for PC100 RAM to be able to run at 133 MHz?

[BigSmooth]

Hola, I don't really know much about overclocking but I ordered a 256MB stick of PC133 Crucial RAM last week so I thought I'd see if my current RAM would be able to handle 133 MHz as well. My current RAM is a 128MB stick of Kingston ValueRAM with (I believe) NEC chips (I haven't opened the case in a while, and I forgot what brand the chips were),

Anyways, I have an ABiT KT7 with a non-overclocked Duron and I went into the BIOS and changed the DRAM clock from HCLK to HCLK+PCICLK, which upped the memory bus to 133MHz. I don't seem to be having any problems (yet 🙂) running at that speed with this RAM. Is this normal? How would I know if the RAM couldn't handle it? Would the system just not POST or boot into Windows?
TIA for your help.

 

[dowxp]

if it didnt work, it would not post. use cpuid to confirm ur discovery! thats a great overclock..

 

[John]

Not all PC100 (8ns) memory will do 133FSB. You typically will not post, or get BSOD's if the FSB is too high. I had some Infineon PC100 that did 143FSB.

 

[BigSmooth]

It POSTed fine and no BSODs, so that is good. But I thought the FSB was different than the DRAM clock? My processor still shows up as 7 x 100 = 700 MHz, so I think the FSB is still 100 MHz, right?

 

[John]

Yes, you upped your memory bus only. However, I would rather have the FSB at 133, not just the memory.

 

[yakko]

High quality RAM will usually overclock fine.

 

[BigSmooth]

John, I am a little leery of upping the FSB because I have a stock TaiSol HSF and although my temperatures are reasonable, I have heard many people say you shouldn't overclock too much using the stock HSF. It would be easy to do since I have SoftMenu III on my MB, though.

 

[Dark4ng3l]

My generic pc133 runs at 149MHz cas2 :Q

It runs faster than my kingston.

 

[Vegito]

my "micron" on generic pcb work at 133... about 7 month later, half the side died and gave me errors, only post at 64... and i threw it away and got real pc133

 

[Pabster]

Generally speaking, CAS2 PC100 will run just fine at PC133 CAS3. Not always, but most generally. And, as some have noted, some PC100 will easily hit 140+. It's kind of hit-and-miss.