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cas2 on ram

F

fourtwenty

Senior member
Hi, I was wondering, how do you test your memory to see if it will run at cas2? I know you change the setting in your bios, but what happens if it won't run at cas2, will I still be able to reboot and change the setting back? I am current running FSB at 100Mhz, and the ram is PC133, does this increase my chances of getting cas2 since the ram is PC133?

what I have:

cel566@850
P3V4X
64M PC133 stick of infineon with the numbers HYB39564800BT-7.5 B 0018
128M PC133 stick of hyundai HY57V658020BA 0042B TC-75

Thanks
 
FSB 100, PC-133 CAS-3 => you can CAS 2,3 Setting
FSB 133, PC-133 CAS-3 => you can only CAS 3 Setting
FSB 100/133, PC-133 CAS=2 => you can CAS 2 Setting...



ps. sorry, I'm korean.. I can little english... sorry..
 
You shouldn't have any problems running CAS2 100Mhz FSB with PC133 Ram. What it will do if it's not compatible at that particular FSB speed depends on the quality of the ram. Example: I had two 64MB PC66(different brands), one would do PC100 Cas2 and one would do PC100 Cas3. If it is not compatible, it will either not boot up or if it's borderline it may boot fine BUT you may start getting errors while doing certain tasks. If it freezes during the boot process, just reset and enter BIOS and change the setting back. It won't hurt anything.

Luck
 
Um, are you sure about that? I changed the settings to 2's, tried to boot and got nothing but long beeps. I removed the 128M stick and fortunately the infineon let my system boot so I changed the setting back. Had the infineon not been able to run cas2 then I would have been up the creek. I am assuming when you said hit 'reset' you meant the computer reset, or did you mean reset the bios manually? At any rate I guess I'm stuck running cas3 for now until I find some better ram.
 
SiSoft Sandra will tell you all about it
Its free and easy to use. Just search SiSoft Sandra and you can download from many places.
 
ok, my Infineon CAS 3 PC133 does CAS 2 at around 143 - 150, oc'ed like mad, and complains once in a while, but hey...🙂

Dont just rely on SiSoft. Its very good, and will give some good benchamrks (not nessesarily real world) but also use something else. For example, at @ CAS 2 150 I could run SiSoft Memory Benchmark, but Q3 wouldnt load at all....So had to back it down a little. But! Just downlaod SiSoft, Install, Open, and about half way down is a picture of a RAM stick with some fire on it, just run that and it will tell you your how your memory is performng...@ the top is something like cpu or system info (cant remember right off) and it will tell you ALOT of specs about your system......As for not loading on the RAM? Dunno, BIOS should load even if RAM tests bad......Anybody able to correct me here?
 
Shockwave:
had some generic ram that I tried running at cas2 (it wouldn't) and I couldn't get back into the bios until I cleared CMOS.

Super6
 
I'm not going to argue generic vs name brand because I cant. Never used generic...Just goin on what I've been told, generic may be ok, but if you wanna oc, better get name brand...I'm on oc'er, so I for d@mned sure only get name brand! BTW, so RAM can affect your ability to get into BIOS??
 
I have 2 128 meg sticks of Crucial 7.5ns ram. Its rated to run 100 @ cas2 and 133 @ cas3. It runs 133 @ cas2 perfectly. Spend a couple extra bucks and get good name brand memory. BTW, Crucial rocks!!
 
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