Increasing Latency for FSB speed

[masamune2387]

Currently, my FSB is running at 260 Mhz with 2-2-2-5 timings. Is it worth increasing the timings to increase my maximum FSB?

Thanks, I'm kinda new to overclocking.

 

[PurdueRy]

what cpu? AMD's don't get hurt too much based on timings, intels I don't know about

When in doubt....BENCHMARK!

 

[Elfear]

Must have some nice VX or BH-5. Seems like the guys at Xtremesystems.org needed about 30MHz higher on ram with loose timings vs. ram with tight timings. That was on an A64. Results will vary of course depending on how loose the timings are and what you're max fsb turns out to be. Like rleemhui said, just bench it.

 

[AristoV300]

Yeah it depends on what you are overclocking. What are your specs?

 

[masamune2387]

I'm trying to overclock a 3000+ winnie with OCZ Gold VX PC4000. I hear it's good RAM and I'm wondering how much it beats out this TwinMost RAM:

http://www.newegg.com/app/viewproductde...TC-Froogle&description=N82E16820218062

which supposedly got 2-2-2-5 timings at 260 Mhz and is a helluva lot cheaper. Any advice as to how I can maximize performance????

Thanks!

 

[masamune2387]

Also running a DFI Ultra-D at 3.5 V DRAM and 1.55 Cpu

 

[vtqanh]

Originally posted by: rleemhui
what cpu? AMD's don't get hurt too much based on timings, intels I don't know about

When in doubt....BENCHMARK!

I thought AMD does benefit from RAM timings. RAM speed doesnt affect it much

 

[masamune2387]

Hmm...that's what I thought too, but...any more opinions? Experiences?

 

[masamune2387]

bump

 

[PurdueRy]

of course it benefits, but its not HUGE. It all depends on how much of a gain you can get in FSB from loosening the timings.

 

[Painman]

Benching isn't my favorite pastime but I did do some runs of 3DMuck05 at various RAM clocks and timings... the best score was achieved with the timings in my sig, but the overall spread was quite tiny.

 

[Koyanisquatsi]

off topic but eh, whatever happened to Zebo?

 

[imported_whatever]

Originally posted by: Painman
Benching isn't my favorite pastime but I did do some runs of 3DMuck05 at various RAM clocks and timings... the best score was achieved with the timings in my sig, but the overall spread was quite tiny.

That is because 3dMark05 is almost entirely Graphics Card dependent.

Try loosening the timings to 2-3-3, it may get you higher speeds, it may not. CAS2.5 will not get you higher speeds though.

 

[Painman]

Yeah, I'm aware of the nature of the 3DMark beast... you can reduce its GPU dependency by selecting the most craptastic image quality levels possible in the drivers. This is a double edged sword; it's what makes 3DMark a joke as a box-to-box comparison tool, but more useful as an indicator of the impact of other factors like CPU and RAM on gaming.

Having said that, I did try a variety of RAM dividers, speeds and timing levels and the benchmark confirmed what I felt on a more subjective level - the timings that I currently use with this RAM give a nice balance of subsystem speeds in a gaming session. The bandwidth and latency settings are also nicely above what the RAM is rated for by Crucial (DDR500 @ 2.5-4-4-10) with no overvolting in the BIOS required, and I should add that this is part of what pleases me about the settings too.

3DMuck05 <- This entry is a POS as a box-to-box comparison for the reasons I gave above, but it was achieved at the RAM settings in my sig on a Neo4... the current DFI is a hair slower but overall a better board IMO for other reasons.

 

[andy nowotny]

There ia no large difference between 2-2-25 and even 3-4-4-8

 

[Doctorweir]

What I experienced regarding the bandwidth vs. timing discussion is everyone having a different opinion here...you will never get a straight answer
You have to rely on your own impressions and benchmarks...but beware of synthetic benchmarks like sandra bandwidth, which will give you higher bandwidth regardless of the timings, if you raise fsb, but you won't recognize in the real world...others say their desktop being "snappier" with tight timings...
I for myself stay with the tight timings and the divider...as long as asus has not solved their memory / 250 issue, I have to stick with it anyway and can't even test the difference... :roll: