• We’re currently investigating an issue related to the forum theme and styling that is impacting page layout and visual formatting. The problem has been identified, and we are actively working on a resolution. There is no impact to user data or functionality, this is strictly a front-end display issue. We’ll post an update once the fix has been deployed. Thanks for your patience while we get this sorted.

-

Nice scores.

* ill be updating this with 160fsb 400ddr results as soon as i get my new board.
Click to expand...

What new board are you getting? Just curious because I checked your rig (from your signature) and I was wondering what was wrong with the Asus.
 
nothing is wrong with the Asus boards at all!
im getting a P4B533-V board that supports the 4:5 memory ratio next.
ill be able to get 160fsb 4:5 400ddr and hopefully 166fsb 4:5 415ddr.

i think its about time we settled this threads question once and for all 😉

😀
 
so far, yes the 166fsb 1:1 333ddr is the way to go, and for every reason.

160fsb 4:5 400ddr might give it a good run for its money.
166fsb 4:5 415ddr is sure to be interesting too.

😉
 
thugs long time no talk...just curious why did you set Vmem to 2.7v for 150, DDR400, and 155, DDR412???
I am asking this cause i can run the exact same mem stick at DDR400 with stock Vmem 2.5v complete stability
but i will take 166 cause all the scores are higher...of course not the mem
 
so far, yes the 166fsb 1:1 333ddr is the way to go, and for every reason.
Click to expand...
[/b]EXCEPT ONE BIG ONE[/b]. What if your CPU cant do 166 FSB??

Here are my results. Try as I may, I could not get 166 FSB to run long enough to finish a bench 🙁 I did get close. 163 FSB is all she'll do.

Thugs please excuse the blatant cut -n- paste of your format. Saved me some typing 😉

System
P4 1.6A stock HS/Fan
EPOX 4BDA2+
Samsung PC2700 1x 512mb
GF4 ti4600 29.42 drivers, stock speed
Win2K Pro

Specs
2400mhz 150fsb 1.65v / 3:4 400DDR Cas 2.5/3/2/6 2.7v
2480mhz 155fsb 1.85v / 3:4 412DDR Cas 2.5/3/3/7 2.6v (it will work @ lower vcore, but i forgot to change it and didnt want to redo the test)
2608mhz 163fsb 1.85v / 1:1 326DDR Cas 2/2/2/6 2.6v


3DMark2001se
2400mhz 150fsb 400DDR . . 11745
2480mhz 155fsb 412DDR . . 11907
2560mhz 160fsb 320DDR . . 11873
2608mhz 163fsb 326DDR . . 11985


Q3A - Demo Four
2400mhz 150fsb 400DDR . . 280.1
2480mhz 155fsb 412DDR . . 279.8
2560mhz 160fsb 320DDR . . 277.5
2608mhz 163fsb 326DDR . . 281.4


Sandra Memory >>> CPU >>> Media
2400mhz 150fsb 400DDR . . 3045/3037 >>> 4735/2942 >>> 9521/11601
2480mhz 155fsb 412DDR . . 3130/3120 >>> 4739/3024 >>> 9840/11978
2560mhz 160fsb 320DDR . . 2415/2413 >>> 5010/3167 >>> 10150/12362
2608mhz 163fsb 326DDR . . 2486/2480 >>> 5118/3189 >>> 10338/12597

I also got higher scores with max CPU speed. My system was on the edge of stabilty @ 2.6 GHz. I think the top end scores my have suffered a bit because of it.

My Soapbox:

If you are buying a new CPU and 845G mobo, you should be sure it supports 4:5 and 3:4 ratios at any FSB to have your bases covered. An 845D/E should support 3:4 at any ratio. If you already have a CPU known to get to the high overclocks, you can do with less. No one should assume they will be able to run 166 FSB+. Most CPU's cant. Yes, IF your CPU can do 166 FSB, without an excessive Vcore to do it, the higher overclock is the way to go. If you get an "average" CPU, it is a nice feature to be able to increase your memory speed to make up for much of the difference.

Me? I'll stick with 2.4 GHz DDR400. My CPU needs too much Vcore to go higher. I never did see just how much for 155 FSB. Maybe I'll do some more testing to see how much Vcore it really needs.
 
Thanks for the tips Oldfart. The main reason I'm posting here (I usually am just in GH and OT) is because I'm thinking about an 845x chipset (E/D/G, etc) and a 1.6A from newegg. I'm thinking about the new asus -V but not sure if it's the right board yet.

THUG: Nice overclock 😀
 
SupermanCK it needed 2.7v.

Sudheer Anne tell me about it 😉

oldfart i just wanted to get this info out there.
not everyone can run 166fsb, but then again not everyone can run 400ddr too.
you did exactly what i want ppl to do tho - their own testing 🙂
 
Yup...it was actually interesting. For my setup, the 2.4 GHz really is best. Even to go to 155 FSB I have to up the voltage quite a bit. It was interesting to see the numbers, but I think I'll just leave it be before I break something.

I'm looking forward to your 845G benches. I think with the 4:5 ratio and that CPU, you should get some pretty nice performance.
 
Geekish Thoughts If can can remember your questions before you edited the post..

Here are how the ratios work:

You can run mem speed async to the FSB clock speed. There are 1:1, 4:5, 3:4 mem ratios on an 845G board. 1:1 runs the memory the same speed as the FSB. 4:5 is FSB x 1.25, 3:4 is FSB X 1.333. Since the 845G uses DDR, the FSB speed is always multiplied by 2 to get the DDR speed.

Some examples:

100 FSB (400FSB QDR)
1:1 ratio: 2 x FSB speed for DDR = DDR200 mem speed
4:5 ratio: 2 x FSB speed for DDR x 1.25 = DDR250
3:4 ratio: 2 x FSB speed for DDR x 1.33 = DDR266

133 FSB 533FSB QDR)
1:1 ratio: 2 x FSB speed for DDR = DDR66 mem speed
4:5 ratio: 2 x FSB speed for DDR x 1.25 = DDR333
3:4 ratio: 2 x FSB speed for DDR x 1.33 = DDR355

150 FSB (600FSB QDR)
1:1 ratio: 2 x FSB speed for DDR = DDR300 mem speed
4:5 ratio: 2 x FSB speed for DDR x 1.25 = DDR375
3:4 ratio: 2 x FSB speed for DDR x 1.33 = DDR400

160 FSB (640FSB QDR)
1:1 ratio: 2 x FSB speed for DDR = DDR320 mem speed
4:5 ratio: 2 x FSB speed for DDR x 1.25 = DDR400
3:4 ratio: 2 x FSB speed for DDR x 1.33 = DDR415

845D/E support 3:4, 845G supprt 4:5 and 3:4. The thing is not all boards support all ratios at all FSB. Sorry Asus fans, but I have to pick on Asus again.
None of the Asus 845D/E/G boards support 3:4 ratio above 132 FSB (there is a hack on the P4B266, but...) With the 845D/E boards you are stuck with 1:1 @ 133 and above FSB. This is also true of MSI. Epox and Abit 845D/E boards do allow 3:4 ratio right up to 200 FSB.

845G boards. The Asus -V board does have 4:5 ratio above 132 FSB, which will get your DDR speed up to a decent level. The Epox and Abit 845G boards have 4:5 and 3:4. Do you need both? Who knows. It depends on what you get for CPU and mem. Somewhere in the midst of all those numbers above is the right combo for your setup. IMHO, the more options you have, the better.

On the 4G4A 12V connector. Plently of people here are getting great overclocks with this board. There is a guy running a 1.6A @ 2.64 GHz, 165 FSB, DDR440 here. That is an extreme example, but there are plenty of people very happy with the board. You can get the non RAID version for $100.

Should you get Corsair PC3200? I'd say yes. If you do get one of the really good CPU's you dont want the ram limiting you.
 
Originally posted by: THUGSROOK
i just got my P4B533-V, and its DOA 🙁
i guess i'll have to wait a little longer...
Click to expand...

That sucks, but to be honest, I'm not looking forward to your results. I just got my P4B533-E, and I can't afford another board......😉

 
yea im kinda bummed 🙁
but i figured if i wait long enough ... the p4b533 will get ratios either officially or hacked 😉
 
U P D A T E

i added 160fsb 320ddr results...
looks like even 160fsb 320ddr is faster than 150fsb 400ddr :Q

im gonna take some scores @ 155fsb 310ddr just to see how rediculous this gets!
 
I added 160 FSB as well. The slower cas timings needed @ the higher DDR speeds take away some of the gain. Once there is true DDR400 cas2 available, (Corsair says its on the way), scores would improve. Later, I may try some more aggressive timings and see how it looks.
 
kewl, oldfart. thx for backing me up with the 2nd opinion bechmarks.
i heard Corsair is comin out with -cas2335 XMS3200 also.
i also heard that intel will be making a 333-400ddr anouncement in the next few months, allowing moboard makers to "unlock" their memory ratios on thier boards.
 
I'm gonna play around with my cas timings a bit and see what it does. Mobo makers (most anyway) have had the ratios available all along. Nothing new there.
 
I updated my 150 FSB DDR400 scores. I changed my Ras to Cas Delay to 2 and Active to Precharge Delay to 6. This is still stable under Prime95. This helped out Q3 scores quite a bit, and 3DMark to a lesser degree.

Thugs, you have good memory. You should try the same. You shouldn't have to run mem timings that slow with Corsair.
 
You must log in or register to reply here.

TRENDING THREADS

Back
Top