P4 2.4C or 2.6C?

[crazy_vag]

Which CPU should I get? I keep seeing posts of the 2.4 overclocking to 3GHz. I don't intend on getting some extreme cooling or anything, but I'm curious... With a retail HSF, how high could i possibly overclock a 2.4 or a 2.6 ghz p4?

 

[aGeNt73]

im wondering the same thing.. any ideas anyone?

 

[batmang]

2.4c, seems to be a lot more oc'able and stable even at stock vcore. I have a 2.6c @ 3.11Ghz, but im at 1.65v :\
I should have gotten a IC7/2.4c combo instead of 2.6c/IS7-E.

 

[oldfart]

2.6C. The 2.4C has a little too low a multiplier. The FSB and ram are pushed too hard. The 2.6C can hit the same or better speed @ a more reasonable FSB and ram speed.

 

[Lonyo]

I was just going to ask, what RAM do you have? If you don't have super fast RAM, go with the 2.6c as you're not going to be able to push all that far if the RAM is limiting you.

 

[oldfart]

Ram requirements with a 3.0 GHz overclock:

2.4C:
12 x 250 FSB = 3.0 GHz
1:1 ratio = DDR500
5:4 = DDR400

2.6C
13 x 230 = 3.0 GHz
1:1 = DDR460
5:4 = DDR368


Ram requirements with a 3.3 GHz overclock:

2.4C
12 x 275 FSB = 3.3 GHz
1:1 ratio = DDR550
5:4 = DDR440

2.6C
13 x 254 = 3.3 GHz
1:1 = DDR508
5:4 = DDR406

 

[stardust]

yay! go 2.6C! im selling my 3.0C to a friend because i want to push my memory to DDR500.

results:

benchy

 

[Khyron320]

This is my first intel setup do you want to run at a 5:4 ratio? on the nforce2 boards if you run in anything but 1:1 it slows u down big time... is it the same for intel?

 

[oldfart]

No. 1:1 Vs 5:4 is not a big deal. Typically, you 1:1 @ high DDR speeds with slow timings. Or, 5:4 @ a lower DDR speed with tight timings. Performance is very close. You can save a bunch of $$ on ram by running 5:4 with tight timings. Here a post that was put up @ Abxzone.com:

By using 3DMark03 to judge what is my maximum FSB/memory/video setting for my P4 2.8c cpu on my Asus P4C800, I obtained the following results:

1) no name PC3200 (1G); FSB=235; 5:4 ratio; 2-3-3-6 SPD; result = 4375, CPU=730

2) Corsair XMS3700 (1G); FSB=235; 1:1 ratio; 3-4-4-8 SPD; result = 4316, CPU=759

3) Corsair XMS3700 (1G); FSB=250: 1:1 ratio; 3-4-4-8 SPD; result = 4328, CPU=810

His system was slower with 1:1 and expensive ram. Not very unusual. Also, read this article.

 

[THUGSROOK]

OCed 2.4b and cheap pc2700 will get you the same scores mhz for mhz.

 

[oldfart]

Originally posted by: THUGSROOK
OCed 2.4b and cheap pc2700 will get you the same scores mhz for mhz.

That is also a great setup (still). Be sure you get a GOOD 2.4B. I had one good one (170 FSB), and two that were junk (140 and 145 FSB). :|

 

[Crittias]

No. 1:1 Vs 5:4 is not a big deal. Typically, you 1:1 @ high DDR speeds with slow timings. Or, 5:4 @ a lower DDR speed with tight timings. Performance is very close.

Does higher quality or higher speed RAM matter for turning on the dual channel?

 

[oldfart]

Originally posted by: Crittias

No. 1:1 Vs 5:4 is not a big deal. Typically, you 1:1 @ high DDR speeds with slow timings. Or, 5:4 @ a lower DDR speed with tight timings. Performance is very close.

Does higher quality or higher speed RAM matter for turning on the dual channel?

As long as you have two same size sticks of ram DC is on. You have to kind of decide if you are going to run 1:1 or 5:4 ahead of time. The high speed ram will not run tight timings even when set to a lower speed @ 5:4. The low latency ram wont go high enough for 1:1 even with loose timings.