so my dad got some 2x 256 strips of hyperX 4000, it wasnt matched, he just bought 2 single strips, he said that it wouldnt work. So i but it in my machine, and it works in duel channel mod, but all i can get it to run at is 400mhz not at the 500 that it is rated at, i have had a lot of trouble with the fsb/ram ratio with this board, anything extreme and it wont even post. i DIDNT try keeping the ratio the same, i donno if my barton 2500+ will do it, it might, but i didnt try. Anyways, still even if my barton cant do that speed, whats the point of 4000 memory if ya cant change the ratio???? i tried changing voltages and such, but i could just get it to run at 3200 speeds....got any answers??

Try running a FSB of 208, and a FSB/DRAM ratio of 5/6. This will run the ram at the advertised 250MHz (500MHz DDR). Also set CAS to 3-4-4-8. Although async operation will not help performance, you can test the ram this way...

the 4000 is some junk ass RAM ( from my exprerence). if you have an Intel, then it may be "decent" to have......but the hyperx that i had (gave away) wouldn't do 250 in dual channel, but would do 265 in single 1:1 (IC7 mobo). get yourself some 3500, either mushkin L2 or XMS.....

i donno i was just askin, my dad already took it back

still anyone have any ideas??

Quote: Originally Posted by WDoG still anyone have any ideas??

Tons...But how far do you want to go? This is what I have seen when people want to push for the extremes, so ya gotta ask youreself if it's worth the time and effort, and the risk that hardware will be damaged if something goes wrong.

Volt mod to the NB bridge chipset: The NF7-S tops at 2.7v, 2.8 will help a bit, maybe a bit more if you get a new cooler too.
Volt Mod to the memory Voltage: I have seen people push as much as 3.1v, but that was with Geil, wich likes the voltage. I would go for around 2.9v and see if that helps.

Extra cooling on the Mosfetts: You can cut some old heat sinks up and glue them on with some AS Epoxy, will help with stability as you push the boards limits.

Drop the multiplier way low, like 8, so the CPU will not be anywhere the limit of the top speed of the CPU, I was able to realy push the limits of my FSB and find my true memory capablities.

My new Shuttle AN-35 Ultra booted into windows at 490FSB with the 8x multiplier but it was only around 2ghz, I am at work, so I will add a CPUZ pic when I get home.
It was not superstable at that speed, 460FSB was very stable though.
I need more voltage for my Geil DDR500 to realy come to life, the board's stock voltage limt is pretty low, Need more power to get things stable.


If you dont feel you wish to mod the hardware, Try ClockGen, a Software OC utility, and you can push the FSB a little easier than if you have too go through the Bootup procedure, when your are most vulnerable to HD data corruption. If you overclock to far with this software, it just locks up. No major crash damage, just hit the reset switch.

That is the quick and dirty way to test your memory..8x multiplier, Loose timings (3-8-8-11) max the the NB and Memory voltage and use Clock Gen to push it as close to 500 as you can.

hmm id like to try, but my dad already took the mem back, thats a good idea i didnt think to drop the multi, dayam. o well thanx for the help

Quote: Originally Posted by WDoG hmm id like to try, but my dad already took the mem back, thats a good idea i didnt think to drop the multi, dayam. o well thanx for the help

When I drop the multiplier to 8, this is what i was able to get from my Geil, I had 2 of the 256 sticks, but fried the good one that went to 500FSB, this one refuses to go any farther...

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what motherboard do u have?

My NF7-S rev2 board has 2.9v for mem max, thats what I selected for my PC2100 DDR, running at 430DDR, 3-3-3-11 timing. Wish I could get this up to 500 DDR, but thats just wishfull thinking.

Quote: Originally Posted by WDoG what motherboard do u have?

I replaced my Abit NF-7S with a Shuttle AN-35 Ultra (N-Force 2)

It was alot cheaper than the NF-7S, but it is a stripped down board, and has lower voltage options than Abit.

Don't ditch your board for this one, I grabbed it because Kayin seemed to realy like it, and it has 4 holes for a HSF, and my oversized Zalman Flower fits without hitting anything.

It will go in my backup rig when I RMA my Abit

did u also have problems with fsb/mem ratio???

Quote: Originally Posted by WDoG did u also have problems with fsb/mem ratio???

What problems are you having? I was able to reach 500FSB Asynch on the Abit by using a memory multiplier instead of a divider
(The Memory was at 500FSB, the cpu was at 378FSB)

I had a problem using the 10 and 10.5 CPU multiplier, that was about it...

EDIT: In response to the post below (TekXoid and Hawklin) No, I didn't make it very clear... I sometimes forget that not everyone will be on the same page, and it might seem confusing to someone who doesn't play with every Bios option on a regular basis, I will keep that in mind for the future

Quote: Originally Posted by $SOLID$ Necro What problems are you having? I was able to reach 500FSB Asynch on the Abit by using a memory multiplier instead of a divider (The Memory was at 500FSB, the cpu was at 378FSB) I had a problem using the 10 and 10.5 multiplier, that was about it...

Uhm, The memory runs off the processor fsb, in order to change the memory speed, lower or higher than the cpu fsb, you need a divider. the multiplier is only used for the speed of the processor, ie: 10x200=2ghz.
It doesnt affect the memory speed. In sync mode, with that example I gave, the memory will be running 400mhz DDR. Refer to Tekxoid's answer on sync mode with the dividers a wee bit above.

To keep it in sync mode, ie low multiplier, high fsb. 9x250 = 2.25ghz, and the memory would be at 500mhz DDR

To clear your confusion, hawkley. In terms of CPU : DRAM ratio, If the second value is higher than the first value then you can call the divider a memory multiplier.

Though you could confuse people with such unofficial terms, bad necro, bad.

Quote: Originally Posted by TekXoID To clear your confusion, hawkley. In terms of CPU : DRAM ratio, If the second value is higher than the first value then you can call the divider a memory multiplier. Though you could confuse people with such unofficial terms, bad necro, bad.

Yeah yeah, I know...attribute that to lack of sleep.

I'm running a 1700 JIUHB at 10.5x220 in mine...

NB cooling is a major issue with this board. Other than that, I really like it. It is a stripper model, but still, it runs the numbers...

Don't forget to turn off fast write. This board hates it.

k i got it, ima try sommore stuff with this mushkin i got, see if i can get it higher

This is an old thread but it came up on my search so w.t.h.

I "had" spontaneous reboots from MAJOR instability. Went through the motions and had HyperX 4000 and had them RMA the stuff. (with a 520W supply.... well you get the idea) at any rate same thing memtest popped error after error at the default (kingston said 2.65V for the DDR core) so in a ditch effort I bumped it up to 2.8 and to my suprise it shined..... so if you call it an overclock fine (I normally call stressing anything above spec an O.C.) if not maybe kingston stated a lesser voltage as stable/defualt in the attempts to have a higher number mistaken for an OC as a selling point.

Either way, I love the stuff and wouldnt give it up for anything!