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Does lowering timings affect anything else?

post #1 of 16
Thread Starter 
Lets say you have your memory running at 1:1 with the fsb. The memory in question is clocked at cas2-3-3-5 when at ddr400. However, you want 2-2-2-5 timings (which isnt a worlds difference I know) so you go change them in the bios...my questions are

1. will the bios allow you to lower the timings if the memory is clocked at 2-3-3-5?

2. If you do manage to get the memory down, what else, as a consequence, is going to be changed? frequency, voltage etc....? Is it possible to change the timings without affecting anything else?

I have 2x1gig of ocz plat el 2-3-2-5 that I am going to put in my new amd rig and I was just wondering if I could bump it down to 2-2-2-5 and still maintain ddr400...is lowering the timings considered OC'ing?

Thanks!
post #2 of 16
OK I'm still pretty new at this but here it goes:

1. is not making sense to me. Clocks are usually the mhz and timing are the CAS RAS etc numbers 2-3-2-5.
Generally speaking, the numbers they advertise are the best so if you want to try lower timings your going to have to run at a lower mhz.

2. If you do end up dividing the ram to get it lower all you'll see is lower clockspeeds, you won't loose anything else or gain anything(on most RAM).

I guess running lower timings could be considered OC'ing but in my mind if someone said they were going to OC their RAM, I'd think they were trying to up the RAM mhz which in turn is going to raise your timings.

To answer your main concern, I haven't found anyone to get any of this 2-3-2-5 ram to run at 2-2-2-5 but again, I'm new to all of this.
post #3 of 16
Quote:
Originally Posted by Repo-mtl
Lets say you have your memory running at 1:1 with the fsb. The memory in question is clocked at cas2-3-3-5 when at ddr400. However, you want 2-2-2-5 timings (which isnt a worlds difference I know) so you go change them in the bios...my questions are

1. will the bios allow you to lower the timings if the memory is clocked at 2-3-3-5?

2. If you do manage to get the memory down, what else, as a consequence, is going to be changed? frequency, voltage etc....? Is it possible to change the timings without affecting anything else?

I have 2x1gig of ocz plat el 2-3-2-5 that I am going to put in my new amd rig and I was just wondering if I could bump it down to 2-2-2-5 and still maintain ddr400...is lowering the timings considered OC'ing?

Thanks!
1. If the ram is rated to run at 2-3-3-5 then run it at those speeds, anything less could potentially cause problems. If the ram is rated at 2-3-3-5 and you want to run it at 2-2-2-5 you can try bumping up the vcore.
2. To get higher clocks on memory loosen the timings (3-3-3-8 for example) and up the v-core to 2.7-2.9 depending on your memory.

If you bump your vdimm and lower your timings then you are oc'ing

3.
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post #4 of 16
Quote:
Originally Posted by Repo-mtl
Lets say you have your memory running at 1:1 with the fsb. The memory in question is clocked at cas2-3-3-5 when at ddr400. However, you want 2-2-2-5 timings (which isnt a worlds difference I know) so you go change them in the bios...my questions are

1. will the bios allow you to lower the timings if the memory is clocked at 2-3-3-5?

2. If you do manage to get the memory down, what else, as a consequence, is going to be changed? frequency, voltage etc....? Is it possible to change the timings without affecting anything else?

I have 2x1gig of ocz plat el 2-3-2-5 that I am going to put in my new amd rig and I was just wondering if I could bump it down to 2-2-2-5 and still maintain ddr400...is lowering the timings considered OC'ing?

Thanks!
1. If the ram is rated to run at 2-3-3-5 then run it at those speeds, anything less could potentially cause problems. If the ram is rated at 2-3-3-5 and you want to run it at 2-2-2-5 you can try bumping up the vcore.
2. To get higher clocks on memory loosen the timings (3-3-3-8 for example) and up the v-core to 2.7-2.9 depending on your memory.

If you bump your vdimm and lower your timings then you are oc'ing
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post #5 of 16
Thread Starter 
Quote:
Originally Posted by internal
1. is not making sense to me. Clocks are usually the mhz and timing are the CAS RAS etc numbers 2-3-2-5.
Generally speaking, the numbers they advertise are the best so if you want to try lower timings your going to have to run at a lower mhz.
Sorry I meant to say rated @ 2-3-3-5 not clocked...
post #6 of 16
To get tight timings you need the right mhz.
And the right voltages.

The timings they advertise are only the top rated timings for mhz. You can go higher but there is no 100% chance u will get them to a certain timing/mhz.

ANd ya you prolly wont get 2225 on 2x1 gig modules.

The main thing with ram is that you have as high of mhz without raising your timings too much.
Its a lame long process. LoL and prolly the most boring part of overclocking.

PS Cobra meant vdimm instead of vcore btw.
PPS ANd from what I hear that ram doesnt oc worth a ****. SOme people say it doesnt OC at all others can get it to like 240 max. So if your confused why it wont go any higher its not you or the mobo its the ram.
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post #7 of 16
1. yes
2. nothing else
3. If your memory will work at those timmings then go for it..Yes i would consider that o/cing if only in the mildest sense
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post #8 of 16
Quote:
Originally Posted by Repo-mtl
Lets say you have your memory running at 1:1 with the fsb. The memory in question is clocked at cas2-3-3-5 when at ddr400. However, you want 2-2-2-5 timings (which isnt a worlds difference I know) so you go change them in the bios...my questions are

1. will the bios allow you to lower the timings if the memory is clocked at 2-3-3-5?

2. If you do manage to get the memory down, what else, as a consequence, is going to be changed? frequency, voltage etc....? Is it possible to change the timings without affecting anything else?

I have 2x1gig of ocz plat el 2-3-2-5 that I am going to put in my new amd rig and I was just wondering if I could bump it down to 2-2-2-5 and still maintain ddr400...is lowering the timings considered OC'ing?

Thanks!
You can attempt to run any ram at any settings your motherboard will allow. The "rated" timings and speeds are simply listed on a table for various speed/timing combinations guaranteed by the manufacturer and are located on a chip on the actual ram stick. In order for your machine to read these suggested settings, you must enable Serial Presence Detect (SPD). If enabled, your default settings will match those listed on the table. With that said, keep in mind that the table settings are often incorrect and also conservative, so I strongly suggest you set them manually.
Edit: Btw, your sticks will not run 2-2-2-5. they must be run x-3-x-x. You're far better off running them 2.5-3-2-6 1T at 230 mhz
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post #9 of 16
hey... I just wanted to add that if you are ever unsure about if your RAM will run tighter timings or a faster frequency run memtest to check. just let it go for a while and if it comes up w/ errors then back down on the frequency, loosen the timings or bump up the voltage till they run w/o any errors for at least 20 passes of test 8
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post #10 of 16
Thread Starter 
Ok thanks for the info guys! I was just curious if it was possible but I know theres not that much diff between 2225 and 2325 anyway. Down the line though I would like to OC my 3800 x2 2.0ghz to 2.5 ghz...I assumed I could do so with the memory I have now. but at 2.5 ghz (250x10) that means id have to run the memory at ddr500 which Im begining to think wont be possible...I guess I will have to settle with a different multiplier to get the fsb down a bit?...which is unfortunate

ps I dont have the amd setup running yet, im still waiting for the ocz PSU!
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