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ram timing

post #1 of 8
Thread Starter 
my default fsb was at 200....so i raised it to 215 and if i raise it up anymore it will crash during 3d bench mark.

so i was wonder should i changed my ram setting from 2.3/3/3/7 to 3-8-4-4...but im a noobie and this is my first time doing this, so what if i did something wrong to the memory will it mess up my comp????

thank you
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post #2 of 8
Changing timings will never hurt your ram in anyway. The only way you can hurt ram is ovearheating and too much voltage.
Raise your ram timings to 3-4-4-8 and if it still doesn't boot then you might have to increase your vdimm. What ram do you have?
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post #3 of 8
Thread Starter 
CORSAIR ValueSelect 1GB (2 x 512MB) 184-Pin DDR SDRAM Dual Channel Kit ... - Retail

http://www.newegg.com/Product/Produc...82E16820145440

btw my cpu core is at 1.33 v is that low?
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post #4 of 8
1.33v is fairly low for a prescott but the ram is the thing holding you back. If you can set a 5:4 divider in your bios. That will enable your FSB to run higher than your Ram speed For example with 250fsb your ram would be running 200mhz.
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post #5 of 8
Quote:
Originally Posted by iomega04
CORSAIR ValueSelect 1GB (2 x 512MB) 184-Pin DDR SDRAM Dual Channel Kit ... - Retail

http://www.newegg.com/Product/Produc...82E16820145440

btw my cpu core is at 1.33 v is that low?
Ya that's a bit low, default for your cpu is 1.4, and you can go as high as 1.525, but watch your temps! Use speedfan or everest or something to monitor your temperatures. Don't go over 60-65C under full 100% cpu load. Your low vcore might be why you can't oc very high, or like mustang panda said it's very likely your ram also. Your valueram is going to hold you back too, but you should be able to get over 215 at least. I had some kingston valueram that I could get to 230. Best way to eliminate your ram as the problem is to run a divider, so you can see how high you can get your cpu. Divider is where you force your ram to run slower, so you can see how high fsb your cpu can take.

I don't know your mobo, but in the bios is where you would make it run a divider. For example, on my mobo for ram (dram) frequency, I can select 500, 400 (makes the ram run 1:1 with the cpu, this is what you really want for best performance), 320, and 266 I think. So I would put it to 320 or 266, then I could pump the fsb and see how high my cpu will go. The ram would be running slower so it wouldn't cause instability. Then you could decide if you want better ram depending on how far your cpu can go, cause you really want to run 1:1 if you can.

So if you could reach 240fsb with a divider, but your ram can only get to 215fsb when you run 1:1, then I'd seriously think about some better ram. Then you could run at 240fsb 1:1 between cpu and ram, and you'd have the best performance. You can run permanently with a divider, if you could get an fsb much higher than your ram could handle, but it's still not as good as running 1:1. A divider is only worth it if your cpu can get alot higher fsb than your ram can take. If you can only get a few more fsb by running a divider, then it's not worth it and impacts performance too much.

But, if you could reach only like 220fsb with divider, and 215 without, then you have to decide if new ram is worth it to get only that extra few fsb when running 1:1. But like I said above, don't run a divider so you can get like 2 more fsb, it will impact performance alot. Some people would buy new ram even if it only meant only a few more fsb (like me ), some wouldn't since it wouldn't make a whole lot of difference really.


and btw, since your question was about ram, you probably should have posted in the intel memory forum, not the cpu one
    
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post #6 of 8
i have my cpu at 3.6 would it be any benefit for games if i overclocked it. i'm personally not sure because these days cpu are way too fast for games any way. my other rig is a old 1.5 ghz P4 and its still higher than the requirements for most games out today. anyway whats your opinion
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post #7 of 8
Quote:
Originally Posted by MustangPanda
1.33v is fairly low for a prescott but the ram is the thing holding you back. If you can set a 5:4 divider in your bios. That will enable your FSB to run higher than your Ram speed For example with 250fsb your ram would be running 200mhz.
Numerically it is a little low, however, if you are running at that voltage at stock speeds without any instability (run CPU intensive programs on it and ensure that the CPU load is at 100%) you are just fine. Whenever I reset my CMOS it lowers the Vcore to the board's minimum, which is about 1.36 or so, I forget the exact number. I've gotten 700Mhz extra out of mine with only 1.4 vcore and it works just fine.
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post #8 of 8
Thread Starter 
okay...i did those steps you mentioned...raised the cpu core didnt work, lower the ram timing made me comp didnt boot up....so i have decided to get new rams

which one of these rams do you think can let me oc to 3.5ghz?


http://www.newegg.com/Product/Produc...82E16820145450

http://www.newegg.com/Product/Produc...82E16820145449

thank you
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