Well 3.0E and OCZ PC3700EB 1:1 stuck.

[sierra248]

Well heres my situation. I can run 270FSB with my 3.0E at 5:4, but when I goto 1:1, it will boot at cas3 but fails quickly on Prime95 Torture Test. I have tried running as much as 3.1volts to the memory and still no go?? What I'm wondering is how much voltage I can Safely run thru my 2x512 OCZ pc3700EB? I've seen posts of 3.6volts, but am scared to do that high without some advice first. I am on air, but just bought a Memory cooler( http://reviews.pimprig.com/cooling/i...cooler-pic.jpg ) and the memory is cool to the touch. Any suggestions, I'd kinda want to run at 1:1 if possible as this seems to give me best benchmarks. What do you all think I should play around with first?

Thanks in advance,
Tom

[ozzimark]

you say cas3, but what are the other timings? is it 3-2-2? i'd try 3-2-3

[saaya]

hey, this thread doesnt really belong in the xtreme overclocking section wich is for xtreme overclocking topics only, i moved your thread to the xtreme bandwidth section wich is for all memory related topics.
please post in the acccurate section the next time.

and yeah, please post some more details

[sierra248]

Man do i keep u mods busy, sorry bout all the off posts. Well right now I am prime95 stable @ 268FSB @ 1.445Volts with 3:2 divider, so obviosly its not the chip. What i really need to know is how much voltage i can run thru these pc3700eb's without damage. I want to run 1:1 at say 265FSB with the fastest timings possible, but the memory is killing Prime95 at those speeds, even @3.1volts. Can't figure it out, will post some screens later.

[chunkylover77]

As far as I know most EB like some voltage. Try upping the voltage some more but dont go too crazy. Also make sure you have a fan on the memory to cool it off. EB gets hot.

[ozzimark]

I want to run 1:1 at say 265FSB with the fastest timings possible

again, what are the timings you are using now?

[sierra248]

I'll tell u what, the memory is cool to the touch. I am using Super Talents Memory Cooler and it seems to work good. gonna try 3.3V and see what happens. I am stable @ 268FSB right now at 1.47V. @ 3:2. Gonna let her go awhile, then crank up my 3.3 rail to 3.5 and see if i can get 3.3V to the memory and see what happens.

[sierra248]

I'm running at 3:2 right now just to see what i can reach stable. but timings right now are 3-3-2-8. There are 2 othe timings one with infinity and like 64t, other is same like 64t 15t and such, what should i set them at?

[ozzimark]

3-2-3-8 might fix your problem then
either way, ram is all about tweaking. just push forward until you regain that stability. it helps to make small steps in speed though

[sierra248]

Well I got her stable at 1:1 @250FSB and 3-4-4-8 timings @ 2.91Volts. Getting there, just doesn't seem to want to run tight timings at all. @ 250FSB I would hope to be able to run cas 2.5-3-3-8 or maybe a little better. I tried up to 3.3V to memory, still no good. I guess I may have to run 5:4 at 270FSB and see if that is best option.

[chunkylover77]

Sierra Bigtoe has said that on the 3700eb cas of 3 is actually better than 2.5. Really no difference in speed but much better in terms of stability

[sierra248]

lol, i just pmed him 2 seconds ago, thanks for the info. I'm now working on raising the FSB a little at a time still at 3-4-4-8 till she wont finish prime95. Figure with the timings as slow as they can be now, ill work on fsb till i reach prime95 crash point and then back her off a bit and then play with the timing, see if i can get 3-3-3-8 or maybe a 2 in there somewhere, just by playing with the voltage.

[sierra248]

Well these sticks will not run stable past 250FSB, kinda sucks as i paid 360.00 bucks for these sticks. Gonna play around with the timings @ 250 and see what i can do. Anyone have any suggestions?

This is what i have set in the bios:
Configuration System Frequency/Voltage

AI Overclock Tuner @Manual
CPU External Frequency @230
DRAM Frequency @400 Mhz
AGP/PCI Frequency @66.66/33.33
CPU Core Voltage @1.4000Volts
DDR Reference Voltage @ 3.1Volts on MM
AGP VDDQ @1.60V
Performance Mode @ Auto, Turbo is off


CPU INFO

CPUID Maximum Value Limit @Disabled
Hyper Threading Technology @Enabled


Advance Memory

Configure DRAM Timing by SPD @Disabled
DRAM CAS Latency @3.0 Clocks
DRAM RAS Precharge @4 Clocks
DRAM RAS to CAS Delay @4 Clocks
DRAM Precharge Delay @8 Clocks
DRAM Burst Length @8 Clocks
Performance Acceleration Mode @ Auto - OFF
DRAM Idle Timer @AUTO
DRAM Refresh Rate @AUTO

Graphics Aperture Priority @AGP/PCI
Graphics Aperture Size @64MB
Spread Spectrum @ Disabled

ICH Delayed Transaction @Enabled

MPS Revision @1.4


Advanced PCI/PnP Settings

Plug and Play OS @Yes
PCI Latency Timer @64
Allocate IRQ to PCI VGA @NO
Pallette Snooping @Disabled
PCI IDE Busmaster @Enabled