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RAM sticks that do 220+ FSB so they can be used with locked Bartons

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c627627

c(n*199780) Senior Member
Joined
Feb 18, 2002
Last edited:
I am using Buffalo pc3200 with winbond ch5 chips. Maybe it's something I'm doing wrong, but I cannot break 205 stable.
 
I am using Buffalo pc3200 with winbond ch5 chips. Maybe it's something I'm doing wrong, but I cannot break 205 stable.
The CH5 would be the problem. Crank up the voltage as far as it will go, but don't back away from CAS2; most gains will probably backfire at lower latencies. 205mhz is a solid fsb speed.

As for what memory to use, anything on this list.
 
Easy enough - just buy PC3500 for an average ~$20 more that PC 3200. A guaranteed 217 MHz FSB right there - more if you overvolt.

My OCZ is CH-5, and it does 233 stably - more than enough for me - although my chipset cannot handle 211+ (233 X 11 = 2563 MHz - if you happen to have a motherboard that can hop 233 MHz stably in Prime, and 3DMark).
 
The problem we face without unlocked multis is not memory speed but rather chipset tolerance of high fsb. very few nforce 2 chipsets are able to go above 220 without volt mods. We need a better chipset.
 
Winbond CH-5 should have no problem doing 220+. I have two sticks of Buffalo PC3200 that can do up to about 215 at 2-3-3-6 and up to about 233 at 2.5-3-3-6. They error out in Memtest after that. I also have a stick of Corsair Value Select PC3200 that'll do 235mhz at 2.5-3-3-6. I'm also going to be getting another stick of Buffalo PC3200 with Winbond CH-5s for Christmas, and I'm expecting similar results.

snvpa is right, though... a lot of Nforce2 boards will have trouble making above 220. That's still over 2400mhz for a Barton, though. I'm not up-to-date on my Barton knowledge, but that seems like an excellent overclock for that chip.
 
Maybe I have a bad stick or something. I'll do some some experimenting over the holiday break and post some results. Maybe I'll even drag out the NF7 and new 1700 dut3c I picked up and try my Buffalo in that.
 
The Geil Golden Dragon can do 225 MHz @ 2.5 8-4-4. @ 2.9 v I'm @ 215 currently due to the NFII northbridge limiting. I posted this on the other thread, that 2600+ bartons might be another option if you want the 11.5x multiplier.
 
Get mushkin black lvl 2, it has BH5 chips guarunteed. My 3200 does 225 2-2-2-5 timings at 2.9 volts. And it never errors in memtest.
 
Glad to here Muskin LVL2 pc3200 is hitting 220+ with 2 2 2 timing I have 2x256 stick's in the mail now.

9 post left
 
i use 2x512mb mushkin level2 black (bh-5) and my highest fsb is 209 (timing 6-2-2-2) but i think my mobo 's the one holding me back :(

any idea how can i test whether my ram can get higher or not on amd system?? can i perhaps running the memory async?? like 120% or something??
 
PC3500 memory definately is the best bang for the buck currently. At only a few dollers more than PC3200, it garantee's your memory to operate at 434MHz over the 400MHz standard that PC3200 memory operates.

If you have more money to blow, PC4000 is the only way to go for AMD systems. And anything faster than PC4000 is just a waist of money because AMD systems will never pass the 500MHz FSB mark anyway.


OC-Master
 
OC-Master, PC4000 may be able to max out the FSB in most cases, but it's not the ideal memory solution. PC4000 is not recommended for AMD systems because its latency is so high. 250 at 3-4-4-8 is no good.
 
AMD needs tight timings to get best performance. I used OCZ Pc3700 Gold 2 x 256 mb in a NF7S motherboard. It required 3.17 volts to get memory stable at 232 fsb with timings of 5 3 2 2




Jen
 
Jen said:
AMD needs tight timings to get best performance. I used OCZ Pc3700 Gold 2 x 256 mb in a NF7S motherboard. It required 3.17 volts to get memory stable at 232 fsb with timings of 5 3 2 2




Jen

Hi Jen!

Wouldnt the best timings be 11-3-2-2? The nForce Chipset is very strange and prefers that timing to be 11, its been proven by PiLsY at XtremeSystems here and Im sure if you run SiSoft Sandra and change it to 11 your bandwidth will be higher than with it at 5? It works for me on my Epox 8RDA.

Craig
 
Shade00 said:
OC-Master, PC4000 may be able to max out the FSB in most cases, but it's not the ideal memory solution. PC4000 is not recommended for AMD systems because its latency is so high. 250 at 3-4-4-8 is no good.

pc4000.JPG

stock NF7-S V2.0, no vmod, vmem at 2.95v, rock stable at 252mhz fsb DC with 2*256mb of A-Data PC4000, at 252mhz have abut 3800mb/s of sandramem...

it's only a test because i haven't my hyperx pc3500 at home right now (can do 250mhz or over 2-2-2-11) but i'm surprised from this mem performance of PC4000 with this timings...
 
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