[salam_azad]

It just me or there isnt a motherboard that have AMD socket 939 plus DDR2 Rams support?

there is or not?

if there is link or name please

thanks,

 

[dukenukem]

No amd motherboard currently suports ddr2 ram.It will probably be a while before an amd motherboard(socket939) be made with support for it.

 

[salam_azad]

why it would take long time before amd motherboard will support DD2?...


damn..iam gonna buy new system you know....

 

[james.miller]

it's not needed so its not supported. It's really that simple. AMD's on-board memory controller with it's ausomely low latency is more than a match for intels brute force approach of using DDR2 to maximise bandwidth.

Right now amd dont need DDR2 at all.

 

[Ninjis]

Actually I believe I remember reading that the new atlhon x2's are suppose to support DDR2. Of course the board will have to support it aswell, but board manufactures probably won't change that until next year when supposedly amd is suppose to release a new socket format.

Ninjis

 

[Valcrist]

Actually the new dual cores will be socket 939 .

 

[salam_azad]

Ok thanks for posts...But what ive understood now..Does DDR ram's on amd 939 motherboard has same Performance like DD2(well there are many ddr2 speeds) Performance??

 

[Valcrist]

Actually it has better preformance. With the 939 chips having direct memory control it basically gives you a fsb rating of 2Ghz.

On the intel side they use DDR2 to compensate for thier small fsb of 800, with DDR2 this effectively gives you the speed of 1.6 GHz fsb.

 

[46480]

I got a question actually a couple
i saw an amd socket 754 do you think its faster or better than a socket 939
im talking about the athlon 64
and another question witch type of memory is the best right now
cause i saw a DDR 625 (PC 5000) witch type of motherboard support that

 

[RF]

I got a question actually a couple
i saw an amd socket 754 do you think its faster or better than a socket 939
im talking about the athlon 64
and another question witch type of memory is the best right now
cause i saw a DDR 625 (PC 5000) witch type of motherboard support that

Socket 939. Most motherboard websites should tell you if it supports that ram.

 

[salam_azad]

Ok... Whitch one is the Best like "DDR-DIMM PC4400" or "DDR-DIMM PC3200" ....what i mean the pcxxxx<- what best higher or lower number...?

thanks

 

[toplerone]

Mostly the higher pc-rating means higher clocks on the ram. PC3200 is 400MHz DDR (200MHz fsb) and PC4400 DDR550 MHz. But the latencies on higher PC rams is mostly rubbish, so if you compare 2-2-2-5 400MHz DDR to 3-4-4-7 500MHz DDR the 2-2-2-5 ram easily beats that 500 cause of much lower latencies.

 

[salam_azad]

Mostly the higher pc-rating means higher clocks on the ram. PC3200 is 400MHz DDR (200MHz fsb) and PC4400 DDR550 MHz. But the latencies on higher PC rams is mostly rubbish, so if you compare 2-2-2-5 400MHz DDR to 3-4-4-7 500MHz DDR the 2-2-2-5 ram easily beats that 500 cause of much lower latencies.

oh thanks for saying that..I thought its only the mhz(and ofcource the quality) says how good is an ram is...thanks very much
Iam buying new system and I will post it later here in forums and i have study all the pices to build the pc and the only thing iam not good at is the ram..but now I've learned alot

...some have only 3 digits.. like CL3 3-3-3 oO little more explanation please :eyemove:

and 2-2-2-5-1 or 2-2-2-5 is the lowest lantency a man can get his hands on? or there is lower..? and at last what is the "low profile" on some rams

thanks,

 

[guenthar]

Pretty much you just need too look for the lowest latency and 2-2-2-5 is about the lowest you will get with current ram except maybe ram for a server that's really expensive. They did have lower latency ram back with sdram but ddr can't go that low anymore without problems.

 

[culubalo]

so if we have ddr2 ram support on a 939 motherboard we would see phenomenal ram efficiency and power?

 

[Kane]

No, because while the bandwidth is there and can be utilised by the onchip memory controller of the Athlon 64s, the latency of DDR2 is substantialy worse.
Think of it this way, what would you rather have: a Skyline which fits 2 people, but is ninja fast, or a double decker bus which fits crap loads of people but takes ages to fill up and make the journey.
Something of an exageration, but you get the idea.

 

[culubalo]

yeah, thanks for that explanation and er metaphor... I get what you mean...

 

[toplerone]

Pretty much you just need too look for the lowest latency and 2-2-2-5 is about the lowest you will get with current ram except maybe ram for a server that's really expensive. They did have lower latency ram back with sdram but ddr can't go that low anymore without problems.

Bh5 and UTT and maybe some more rams on A64 system can go like 1.5cas easily with A64 tweaker. A64 tweaker lets you change all ram settings via windows very easily plus many more ram timings what you wouldn't find in bios.

you just need to get right chips if you want 2-2-2-5 or lower

I prefer for DDR's New-gen BH5, UTT and old BH5. These chips will get you 2-2-2-5 without hassle and overclocks like beasts.

 

[toplerone]

...some have only 3 digits.. like CL3 3-3-3 oO little more explanation please :eyemove:



thanks,

Well that 3-3-3 and so on are only meaning for CAS latency (first 3), RAS to CAS delay (second 3) and RAS precharge (last 3), the last would be cycle time (tras) but for some reason this isn't mentioned on all shops and cheap rams.