Memory

[Panda On Smack]

Need a 1GB stick of memory for my new system, any suggestions?

I dont know what make to get, is it worth paying more or will entry level stuff do?

Fanks

 

[inactionman]

Is this replacing your existing memory or supplementing it?

 

[Panda On Smack]

replacing it

I think my current memory is a little old for the new CPU

Can i check somehow?

 

[inactionman]

Expensive stuff only gives about a 3-5% performance difference for a 10-50% cost difference, it's not always worth the price.

hat motherboard/cpu do you have? As it may be better for you to just upgrade to a matched pair of 1Gb sticks, a bit pricier, but it may save you a future upgrade and most new games prefer 2Gb.

 

[Panda On Smack]

Asus A8N SLI Premium mobo running an Athlon 64 X2

Ta

 

[inactionman]

You want 2 sticks so you can run dual channel, it will give you a major performance increase (theorectically almost double the memory bandwidth).

These should be good:

http://www.komplett.co.uk/k/ki.asp?sku=122785&view=detailed

If you only want 1Gb you can get these:

http://www.scan.co.uk/Products/ProductInfo.asp?WebProductID=71473

 

[Panda On Smack]

Ta

On Komplett if i go through the little drop chooser for my stuff it offers me these:

http://www.komplett.co.uk/k/memselect.asp?cmd=getModelPartList&strMfr=ASUS&strProdLine=ASUS+Motherboards&strModel=A8N-SLI+Premium

The ones you linked to arent in there, does that metter?

 

[inactionman]

The reason for that is you are using the crucial memory selector, which obviously only finds crucial products. The one I suggested is a corsair product, pretty much the same as the equivilent crucial product, but about £5 cheaper.

 

[Panda On Smack]

Aha! Thanks dude

Excuse my ignorance. Few things arrived today, scan are super quick at delivery!

 

[inactionman]

Yeah, they are pretty much my favourite computer etailer. You can find some stuff elsewhere cheaper, but scan are consistently good.

 

[Panda On Smack]

Due to the speed of Scan's delivery is there a 2gb memory solution from them i can buy?

Got everything up and running but im using my old memory, CPU-Z screens below. OC'd it a bit, i can go more but I dont know how it messes with the memory.

When i bumped the CPU FSB up to 240 the memory Frequency dropped to 155?

That make sense?

Ta

 

[inactionman]

It's because the motherboard has put a divider in (2/3).

I just did a 10% overclock, which didn't need any dividers. Never really dealt with dividers, but someone else here may be able to help you.

The memory I have is these:

http://www.scan.co.uk/Products/ProductInfo.asp?WebProductID=156701

 

[TdC]

I've got a formula for overclocking athlons at home. can't remember it off the top of my head. tell you later then. I do remember that the error you'r emaking is bumping up the fsb. with the goodness that is athlon you should be able to keep that more or less at what it should be (200MHz).

 

[Panda On Smack]

Cheers people, ive put it back to standard speed until i get new memory that can keep up with it

 

[TdC]

soz Panda, I forgot all about you

here's my formulae for Athlon clocking:

CPUspeed = CPUfrequency x multiplier

and more importantly

RAMspeed = (CPUfrequency / 200) x (RAM-DDR-frequency-clamp / 2)

the former speaks for itself, but the latter needs a bit of explaining:

RAMspeed: ideally you want this to be ~400Mhz, the rated speed of PC3200 DDR
CPUfrequency: what your cpu is running before the multiplier is factored in
200: eh? 200? well, that's what your rated DDR speed is devided by 2 (400Mhz remember?)
RAM-DDR-frequency-clamp: aha, here's where the magic happens! you want to work your ram deviders to make your ram cope with the boost in speed you're giving it through bumping the cpu frequency, because in real world terms you usually can't fiddle with your multiplier. what are they then? well, 200, 166 and 133. possibly even 100. (ie 400, 333, 266 and 200 DDR)

one more thought: you don't want to move your HyperTransport over 1000Mhz! so make sure that your HTT multiplier x your CPUfrequency =< 1000!

real world example:

tdc's poota: amd athlon64 3200+ at 2000Mhz. 1GB PC3200 at 400Mhz DDR

I overclock my kit like so for 2500Mhz :

-set CPUfrequency to 250
-set HTT multiplier to 4
-set RAM-DDR-frequency-clamp to 333

this gives me a final ram speed of 207,5 Mhz or 415Mhz DDR which isn't too nasty. my ram handles it just fine:

( 250 / 200 ) x 166 = 207,5

and a cpu speed of 2500Mhz with a 1000 HTT bus. to make it stable I had to set my ram voltage to 3V and my cpu voltage to 1.5125V. hope this helps!

 

[Panda On Smack]

Fank yoo

 

[Panda On Smack]

Im gonna give this a go later but i have the following:

Athlon 64 X2 4200+ 2200Mhz
2GB PC3200 400Mhz DDR

Currently the default multiplier is 11 x 200

Ive seen guides that say you can bump it up to 11 x 240 which gives you 2600mhz. I just need to play with the ram now but i dont understand all of the bios settings.

 

[TdC]

a cpu frequency of 240 would give you a nice ram frequency of a smidgin under 400MHz ddr. not bad tbh, if it will work