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How bad really is 5:4 mode?

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September 19, 2003 9:18:19 PM

I have a P4 2.4c with Corsair PC3200LL memory. I've been overclocking and since I have DDR400 I've been doing it in 5:4 mode. How much performance do I lose by it? Is it better to be in 1:1 with 2.4GHZ or 5:4 with 2.5GHZ, how 'bout 2.6 or 2.7?
Better gaming is my goal.
My sys: Abit IS7-E, P4 2.4C, 2x Corsair CMX256A-3200LL, Gigacube Radeon 9600P, WinXPPRO.

Roses are <font color=red>red</font color=red>, violets are <font color=blue>blue</font color=blue>, post something stupid and I won't reply to you!

More about : bad mode

September 19, 2003 9:37:12 PM

I have 5:4 with HyperX PC3500 p4 2.4C OC to 3.0.
September 19, 2003 10:30:37 PM

I'm having problems getting to 3.0 (probably because it's so god damn hot here!) so I've been wondering if it's worth to overclock a little and sacrifice being at 1:1 mode.

Roses are <font color=red>red</font color=red>, violets are <font color=blue>blue</font color=blue>, post something stupid and I won't reply to you!
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September 20, 2003 12:38:03 AM

If you are only running at 2.5, the ram should be fine at 1:1. At 2.6 gigs you might be ok with looser latency. Most pc3500 is good quality pc3200LL with slower timings anyhow.
September 20, 2003 12:55:51 AM

I don't get it. First you ask how much performance you would lose and then you say better gaming is your goal. Well then, just test it yourself and see if your gaming gets better... Duh!

:wink:

<P ID="edit"><FONT SIZE=-1><EM>Edited by c0d1f1ed on 09/20/03 02:56 AM.</EM></FONT></P>
September 20, 2003 5:19:06 AM

yeah, some of the fun in overclocking is testing it out, and spending the time working out the combinations.
but imo, overclock it at 1:1 until you start having isues and then change to 5:4 and then increase it a little more. just depends on how heavily you want to o'c
September 20, 2003 8:04:26 AM

Well, I tried overclocking my RAM a bit but Windows was no longer stable, processes kept closing on me, especially explorer, and that was at 2.6GHZ, I'm now at 2.7 and I'm going to keep pushing.

Roses are <font color=red>red</font color=red>, violets are <font color=blue>blue</font color=blue>, post something stupid and I won't reply to you!
September 20, 2003 3:07:42 PM

Have you tried looser timing's for your RAM? Higher clockspeed is more benficial than tighter timings.

I read an article where running memory at the most aggresive timings gave you the same performance as using the worst timings and raising the clockspeed only 3-4 MHz!! This was tested with many bencmarks!! Its crazy to think so much emphasis is put on aggresive timings when it does so little. I will find the article and post a link, i think it was at Anandtech or this site.

--------
The only thing that i truly know...

is that i know nothing at all.
September 20, 2003 4:28:41 PM

I remember it too. Increasing the FSB 3-4 MHZ compensated for looser timings. I remember it being on this site or <A HREF="http://Anandtech.com" target="_new">http://Anandtech.com&lt;/A> I looked some and couldn't find it though.
September 21, 2003 4:22:04 AM

I've read that too (on this forum) but I don't think that loosening my timings will let me get an additional 66-100 MHZ on my RAM (33-50 MHZ on the FSB)

Roses are <font color=red>red</font color=red>, violets are <font color=blue>blue</font color=blue>, post something stupid and I won't reply to you!
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