CPU:DRAM 1:1 ratio?

[Phil1ip]

I've been trying to find a definitive answer to this but so far nothing. I have an E6850, 333 FSB, and 2x1GB crucial ballistix PC2-6400 ram. What would give better performance, even if it's only slightly better, underclocking the ram a little to 667 to get it to run at a FSB: DRAM 1:1 ratio, or leaving it at 800 and getting a 5:6 ratio? Or, would it be best to leave it underclocked at 667 and lower the timings 3-3-3-10, from the default of 4-4-4-12@1.9v. And if anybody knows a good benchmark to run so I can test it all out that would be great. Thanks.

Specs
CPU:E6850
MOBO:Gigabyte GA-P35-DS3R
RAM:2x1GB crucial ballistix PC2-6400@667 4-4--4-12 1.9v
GFX:8800 GTX
HDD:160GB Western Digital Caviar @7200RPM SATA 2
OS:VISTA Home Premium 32-bit

 

[cyclone3d]

Sisoft Sandra will show the memory bandwidth change very easily.

Just try the different settings for yourself.

 

[Phil1ip]

Where can I get it, and is it free? Also, is it easy to understand? I still don't know a lot of technical stuff so I hope it's simple.

 

[zombiebeat]

I've been trying to find a definitive answer to this but so far nothing. I have an E6850, 333 FSB, and 2x1GB crucial ballistix PC2-6400 ram. What would give better performance, even if it's only slightly better, underclocking the ram a little to 667 to get it to run at a FSB: DRAM 1:1 ratio, or leaving it at 800 and getting a 5:6 ratio? Or, would it be best to leave it underclocked at 667 and lower the timings 3-3-3-10, from the default of 4-4-4-12@1.9v. And if anybody knows a good benchmark to run so I can test it all out that would be great. Thanks.

Specs
CPU:E6850
MOBO:Gigabyte GA-P35-DS3R
RAM:2x1GB crucial ballistix PC2-6400@667 4-4--4-12 1.9v
GFX:8800 GTX
HDD:160GB Western Digital Caviar @7200RPM SATA 2
OS:VISTA Home Premium 32-bit

Run the RAM at is correct timings and correct speed, even if that means 5:6 and not 1:1. (1:1 is most desireable in an O/C processor situation but not a show stopper).

Have you checked Crucials site to get the voltage and timings of your particular memory?
A quick google tells me this prefers 2.2v and its 4-4-4-12 though this may not be correct for YOUR memory

 

[Phil1ip]

Yes, the specs say 4-4-4-12 @2.2v, but I've heard several times that people running it at that voltage have had theres fried. I hear I could even run it at 1.8v and still get those timings. Anyways, I haven't had a crash yet at 1.9v so I guess that means it's stable, no reason to turn up the voltage if it works on a lower one right?

 

[zombiebeat]

Yes, the specs say 4-4-4-12 @2.2v, but I've heard several times that people running it at that voltage have had theres fried. I hear I could even run it at 1.8v and still get those timings. Anyways, I haven't had a crash yet at 1.9v so I guess that means it's stable, no reason to turn up the voltage if it works on a lower one right?

Nah wouldn't say so, lower voltage = less heat so its all good.

 

[Manny Calavera]

Yes, the specs say 4-4-4-12 @2.2v, but I've heard several times that people running it at that voltage have had theres fried. I hear I could even run it at 1.8v and still get those timings. Anyways, I haven't had a crash yet at 1.9v so I guess that means it's stable, no reason to turn up the voltage if it works on a lower one right?

I run my Tracers undervolted (2.05v) with no issues,its certainly makes for less heat in the case.

 

[billt]

Did my first OC about 3 months ago and spent maybe 6 hours online trying to answer same question, Never got a clear answer; opinions differ. I finally opted for 1:1 which for PC2-6400 requires 400 FSB. I was skitish about running at 3600MHz (50% OC) and the voltages necessary so I dropped multilier to 8 (400 x 8 = 3200MHz) and raised voltages a little. Runs stable and cool. vCore 1.375; FSB 1.400; NB 1.450; SB 1.50; ICH auto; vDRAM 2.1v.