Best DDR @ 2.85v?

[MrLavender]

I want to unlock my 2400+, but my XMS3200 cas2.5 will only do 175 at max timings (12.5x175 = 1187MHz ).

My KX7 is not volt-modded, and I don't intend to do that anytime soon, so what will run best at 2.85v max? I've been looking at Corsair or Geil PC3500, these are both rated 2-3-6-3 1T @ 200MHz, the same as PC3200 cas2. Is it worth paying the extra money?

[tweaky]

Well my Corsair PC3200 CAS 2 stick is good for 214Mhz turbo timings at 2.70 volts, so Corsair is definitely the ticket.

[JCviggen]

do not keep fastest timings. you can score way better at medium timings and very high FSB's..

[Tom Holck]

http://www.xtremesystems.org/forums/showthread.php?s=&threadid=1361




Prometia P4 2.8 or 2.66

Abit IT7-Max2 rev1

winbond 4.5

voltmodded, pelitie, cooling etc



Best regards

Tom Holck
Denmark

The Homeland of Prometeia

[JCviggen]

Just one question... where to get the Winbond 4.5ns stuff and how much is it?

238 at those timings is not so spectacular tho?

I did 238 at cas2 , 7-2-3 2.9V easy with this 5ns Winbonds...

[Tom Holck]

I agree, 238 is not so spectacular.

If we peltiercool the ram at high mem-volt, the settings can bee realy agressive.

I think you must wait a little for the winbond 4.5
They are not commersiel yeat.



Tell me JC,
When you take the sim of the P4, and lover the mounting for the Prometeia how many mhz did you get? I agree with you its a hell to get good contact.

Best OC Regards

Tom Holck
Denmark

[JCviggen]

Tom,

I lowered the whole prometeia evaporator to actually have good contact with the P4 die but I just couldnt make it work.
The best way I ever got working was with a nice shiny (silver) coldplate between the evaporator and core. Its much better contact than the original heatspreader and it got me about 60 MHz more at lower voltage. I have to say, 14 times out of 15 the contact still sucked :\
Its potentially worth it, but you'll reduce the value of your chip to practically nothing, and you will never get the heatspreader back on again. Well you can but it'll add 10-15C to your original core temp

[JCviggen]

oh and to illustrate, this is my core temp as we speak with intel cooler and the heatspreader back on..... kind of



stressed temp, mind you

[spaceboy]

Originally posted by JCviggen
do not keep fastest timings. you can score way better at medium timings and very high FSB's..

not in AMD rigs

[MrLavender]

Originally posted by spaceboy
not in AMD rigs

That's what I thought. All my experiments in running higher fsbs with less aggressive settings have got me nowhere.

Also, I cannot set Tras to 7 or 8, only 5 or 6. Same with Trp and Trcd, 2 or 3 only, not 4. So the PC3500 which is rated 2-4-8-4 @ 217 seems no better to me than the PC3200 rated 2-3-6-3 1T @ 200.

[spaceboy]

winbond BH-5 Vs BH-6
the only difference
get some Twinmoss 3200 with the same chip!!

mine oem BH-6 are good for 3D Mark at 202 full tweaked @3.0v

[MrLavender]

3.0v is not an option. What will it do at 2.85v?

[spaceboy]

Get some twinmos BH-5!
mine requires more voltage!

[Tom Holck]

[QUOTE]Originally posted by JCviggen
[B]Just one question... where to get the Winbond 4.5ns stuff and how much is it?

Hi JC

Link to Geil 3500 Ultra 4.5 now we can get them in DK
about 2100 D kr. it's about 280,- euro or us


http://www.geilusa.com/products.asp


Best OC regards


Tom Holck
Denmark

[JCviggen]

I think i'll stick to my Corsair 3500.
It will run at least 240 (480) 2-7-2-3 enhanced, possably more... should be enough to max out my CPU

[MrLavender]

Well, unlocking my 2400+ gave me another 460 3dMarks at the same cpu speed.

I also got my memory 3MHz higher at max timings and I think it was the cpu copping out at 179 rather than the memory. I've replaced my KX7-333 rev 1.0 with a KX7-333R rev 1.1 since I last benched, either that did it or maybe it was the vmod I've done on my Enermax psu.

Still think I need something better to break 15k though. Is the Winbond 4.5ns the best thing out there then? I know where I can get some of that in the UK.

[PiLsY]

Mines fine JC. Plates been put back on and temps are lower due to AS3 instead of the white crap intel used.

Was thinking the same as yourself - a silver coldplate. Taking me some time to find one though . Any recommendations where to look?

PiLsY.

[GreenBeret]

Best DDR at 2.85V ?

Corsair PC3200 C2.5 on Asus P4B533-V:



Can bench at 188/DDR500

Note: not mine :p it's my friend's.

[DoGMaN]

Niko, Thats some amazing BW!!! He must have gotten the magic stick. My Corsair wouldn't even do 450.

[JCviggen]

Originally posted by PiLsY
Mines fine JC. Plates been put back on and temps are lower due to AS3 instead of the white crap intel used.

Was thinking the same as yourself - a silver coldplate. Taking me some time to find one though . Any recommendations where to look?

PiLsY.

I got my silver cold plate back in the early Ti4600 days from Petervandamned He works at the OC-shop .... they dont have them anymore now I think.
Check out a jewelery store. I believe thats where they got them in the first place
Note , it aint a cheap plate...

[MrLavender]

Originally posted by Niko
Best DDR at 2.85V ?

Corsair PC3200 C2.5 on Asus P4B533-V:

Can bench at 188/DDR500

Note: not mine :p it's my friend's.

Very nice bandwidth! But I have an AMD system, and as spaceboy says above I need it to run max timings - 2-2-5-2 1T, or 2-3-6-3 1T at the very least. My current stick will go well over 200MHz at CAS2.5 and 2T Command Rate but the relaxed timings actually give a lower 3dMark score than 175MHz @ 2-2-5-2 1T. Plus the fact that I have to turn CPU Decode down to Normal at those fsbs.

The more I talk about this, the more tempted I am to just bite the bullet and do the vmod...

[MrLavender]

Well, as my sig says, I got the 15k after all.

It seems that Command Rate = 1T was not quite as important as I thought as long as all the other timings are at max and CPU Decode = Fast.

Also, my KX7-333R rev 1.1 seems much more stable at high fsb than my old KX7-333 rev 1.0. I could never get that above 175 @ 1T, but managed 181 with my tbird today.

One weird thing - wtf is going on with the 8x multiplier on my tbird? I can run 3dMark at 8.5x181 but not at 8x180! It won't even boot windows at 8x185, even with CR = 2T. I'm sure that 8x192 (1536MHz) would have given me at least 100 points more.

[King_of_qb]

well my stick of corsair pc3500 is runing 198fsb at max timings including 1t command and i didn't even burn it in yet