O'clocking and Memory Timing Question

[wolfpack15]

I am thinking about adding another 1GB PC3200 RAM to my system. So, eventually, I will have 4 sticks of 512MB of this memory:

Corsair XMS 1GB PC3200 Memory

In my current set-up, 1GB is set up to run in dual channel mode. These are the current settings (from CPU-Z):

Frequency: 220.0 MHz
FSB-DRAM: CPU/5
Cas# Latency: 2.0 clocks
RAS# to CAS# delay: 3 clocks
RAS# Precharge: 3 clocks
Cycle Time (Tras): 8 clocks
Bank Cycle Time (Trc): 12 clocks
DRAM Idle Timer: 16 clocks

My system is overclocked just a little. It is running at 220FSB x 11 (=2400Mhz) at max. Most of the time it is running at 220FSB x 5 = 1100Mhz.

My question is that will it still be running at OC'ed speed when I add another GB? or at PC3200 stock speed if I return to stock settings? I have heard that when you have 4 sticks, your memory runs at PC2700 speed. Is that the case with San Diego 3700+ as well?

Appreciate all your help in advance. Thanks.

 

[Sentry2]

I actually just went through that whole deal myself! OK the San diego will run 4 sticks of ram in dual channel at DDR400 no problem(unlike the winchesters). Keep in mind this is at 2T. It will no longer run it a 1T with all slots populated. I had a 3700+ diego before my X2 and it wouldn't overclock with 4 sticks. Got it to 220x11 1:1 just like you and it would crash every 5 minutes. I was using 4 stick of geil ultra DDR550. The solution....well I ordered the Corsair XMS dual channel kit(Twinx2048-3200c2pt) from the egg for around $230. Now I couldn't be happier. These are AWESOME for 1gig sticks. They will do 2.5-3-3-6 1T all the way up to 237(474MHz) and you're only using 2 slots! Had to have it for BF2. Selling my geil on ebay right now. So maybe you could sell your other gig and try the 2gig kit. You won't be dissapointed.

 

[wolfpack15]

Thanks for quick reply. Can you please explain more about 1T/2T. I don't know much about that. Have heard quite often but don't exactly know what that is. Is running at 1T faster than 2T? Thanks.

 

[Sentry2]

Well the 1T command is quite a bit faster than the 2T command. Has something to do with latency I guess. I noticed a difference in frame rates and benchmarks when I started running 1T. It's not a huge difference but again 4 sticks of dual sided ram will probably really hurt your overclocking. That's why I was soooo mad. I spent all that money on a new water cooling setup just to find out overclocking sucks with 4 sticks of ram. Expensive ram too!!
Now I have the Twinx2048-3200c2pt 2gig kit and I couldn't be happier. Sorry Corsair I will never leave u again

 

[wolfpack15]

Thanks Sentry2.