Which Ram for LANPARTY UT nF4 Ultra-D

Jimbo Mahoney · 1 May 2006 at 18:32

I've just bought a 2GB set, so I'll be putting the 1GB BH5 in my sig in the MM soon....

cymatty · 1 May 2006 at 18:39

Jimbo Mahoney said:
I've just bought a 2GB set, so I'll be putting the 1GB BH5 in my sig in the MM soon....

Damm just bought the Mushkin (991440) eXtreme Performance (2x512MB) 1 Gb XP4400 [email protected] Redline Kit.

Edit- bought a fan for them as well.

kitfit1 · 1 May 2006 at 23:43

Defcon5 said:
What tests have you been doing to get those results?

To get what results?

Defcon5 said:
A64s are not bandwith limited so throwing extra bandwith at it isnt going to make much of a difference (apart from in things like sandra and pi)

I did'nt say it was bandwith limited. I use my rig 90% of the time for DV encoding and the extra bandwith makes it at least 15mins faster with an 8gig to 9gig file.

Defcon5 said:
And running 1;1 will put more stress onthe memory controller due to the higher frequency, even when 1;1 it is calculated using a divider so changing the divider wont affect it

Running 1:1 puts the stress on the memory, not the memory controller.
Since when has 1:1 been a divider?

cymatty · 2 May 2006 at 00:31

kitfit1 said:
Very good stuff, especially in the DFI's. There is one downer on it though, when your running with high vdimm it can burn out the cpu's memory controller so to get round it you have to pump more vcore through the cpu. There is a calculation that can tell you what the vcore should be for a given vdimm, if you do a search at "DFI STREET" you will find it.

Ok read the article and apparently

(vdimm/2)-.325v is safe.

So if i run my memory @3.3v it works out as
(3.3/2)- .325=1.325v

So what does the venice run at normally?

kitfit1 · 2 May 2006 at 09:37

cymatty said:
Ok read the article and apparently

(vdimm/2)-.325v is safe.

So if i run my memory @3.3v it works out as
(3.3/2)- .325=1.325v

So what does the venice run at normally?

AMD says 1.35 to 1.4, so it looks like you should be safe. You can of course put more vdimm through that ram if you have to and that's were you need to bear that calc in mind.

cymatty · 2 May 2006 at 10:43

kitfit1 said:
AMD says 1.35 to 1.4, so it looks like you should be safe. You can of course put more vdimm through that ram if you have to and that's were you need to bear that calc in mind.

Is it safe to put more v through the processor?

Minstadave · 2 May 2006 at 10:45

cymatty said:
Is it safe to put more v through the processor?

Venice runs at 1.4V stock, I'd be comfortable using upto 1.5 on the stock air cooler, 1.6V on high end air and 1.65V on the average watercooling setup.

cymatty · 2 May 2006 at 12:15

Minstadave said:
Venice runs at 1.4V stock, I'd be comfortable using upto 1.5 on the stock air cooler, 1.6V on high end air and 1.65V on the average watercooling setup.

Ah that ok so doing the calculation backwards

(1.5v + 0.325)*2 = 3.65v vdimm

So if i run my cpu at 1.5v i can run my memory up to 3.65 which should be fine? As i have read the memort i am getting "only" needs 3.5v to run at 500mhz.

agw_01 · 2 May 2006 at 12:29

cymatty said:
Is it safe to put more v through the processor?

If you're worried about that, best not let me near it then!

I've been out the game for a while, so can anyone remind me what the stock voltage is for DDR dimms? 2.8v?

Minstadave · 2 May 2006 at 12:34

agw_01 said:
If you're worried about that, best not let me near it then!

I've been out the game for a while, so can anyone remind me what the stock voltage is for DDR dimms? 2.8v?

2.6v for most

agw_01 · 2 May 2006 at 12:38

Ah cool, cheers Minstadave

Last time I had a good OC'ing session was back in October. My machine has been running rock solid stable since then, so I've had no reason to mess with it.

Still, I think it's time to get some more juice out of this Mobile

cymatty · 2 May 2006 at 12:43

agw_01 said:
If you're worried about that, best not let me near it then!

I've been out the game for a while, so can anyone remind me what the stock voltage is for DDR dimms? 2.8v?

Don't hurt my baby you nasty little man.

Defcon5 · 2 May 2006 at 23:02

kitfit1 said:
Since when has 1:1 been a divider?

DRAM clock = CPU clock / ( ceil(CPU multiplier / DRAM divider) )

Ciel simply means the number is rounded up to the next whole.

kitfit1 · 2 May 2006 at 23:32

Defcon5 said:
DRAM clock = CPU clock / ( ceil(CPU multiplier / DRAM divider) )

Ciel simply means the number is rounded up to the next whole.

You actually mean DRAM Clock = CPUClock/(ceil(Multiplier/MemDivier)) = 200Mhz (DDR400)

Defcon5 · 3 May 2006 at 10:40

kitfit1 said:
You actually mean DRAM Clock = CPUClock/(ceil(Multiplier/MemDivier)) = 200Mhz (DDR400)

the outcome of the equation wouldnt always equal 200.

It would if all settings were at stock, but not if any were clocked

cymatty · 4 May 2006 at 16:08

Hi got this memory and ordered a 80mm silent fan from ocuk, will there be enough cooling for my ram if i pulg this fan into a fan connector on the mobo?

ajgoodfellow · 4 May 2006 at 18:50

cymatty · 4 May 2006 at 19:18

ajgoodfellow said:
Yep

Cheers re the equation mentioned above, does this mean it is better to overclock the cpu first, then use the equation to figure out what volts are safe for my ram?

ajgoodfellow · 4 May 2006 at 19:26

I'd use the equation just to get a guide line figure as what volts are safe when your CPU VCore is at 1.35V, 1.4V, 1.5V, etc

You can then push your ram at the same time as your CPU to see how high it'll go

cymatty · 4 May 2006 at 19:28

ajgoodfellow said:
I'd use the equation just to get a guide line figure as what volts are safe when your CPU VCore is at 1.35V, 1.4V, 1.5V, etc

You can then push your ram at the same time as your CPU to see how high it'll go

Cheers again, is there any point runnig my memory faster than my cpu eg

CPU 250x10 = 2500mhz
Memory 3.5v 260mhz?

Or is it best to run the memory at 250mhz, which it will at 3.4v?