m2 amd 64 & x2

[sonoma1993]

When amd bring out the m2 cpu/sockets for the athlon 64 and x2 for the ddr2 support. Which of the two cpu will benefit more from the ddr2?

 

[Furen]

The X2, of course. Since it's able to do two memory intesive things at once, it will be able to get the most out of the massive amounts of extra bandwidth. Single-core might actually, in fact, take a slight hit in performance since the timings will be looser (This is just extrapolating current data, AMD's ddr2 controller might be insanely good, for all we know... then again, it might suck at first, haha).

 

[Bona Fide]

Here's what bothers me...AMD has always benefitted from better memory TIMINGS rather than memory speeds. So what's the advantage to DDR2?

 

[Furen]

The difference between low-bandwidth tight-timming ram and high-bandwidth loose-timings is pretty much negligible (of course high-bandwidth tight-timings whore both of these, but you only get that with high-voltage memory) but high memory bandwidth gives you some very noticeable performance increases in memory-bound operations (like winrar).

 

[sonoma1993]

yeah I thought the x2 my benefit more frm the dd2 memory. From what id understood from reading fourms, that today ddr2 memory has alot better timings than the sticks that came out last year or whenever they were release. Im assuming by the time m2 is release, we'll have higher speed ddr2 with better timings.

 

[Hyperlite]

Originally posted by: Bona Fide
Here's what bothers me...AMD has always benefitted from better memory TIMINGS rather than memory speeds. So what's the advantage to DDR2?

the frequency will just have to be that much higher to make up for the looser timings.

 

[imported_Kensai]

Originally posted by: Hyperlite

Originally posted by: Bona Fide
Here's what bothers me...AMD has always benefitted from better memory TIMINGS rather than memory speeds. So what's the advantage to DDR2?

the frequency will just have to be that much higher to make up for the looser timings.

DDR2-1000. @ CAS5 = Funky.

 

[Hyperlite]

Originally posted by: Kensai

Originally posted by: Hyperlite

Originally posted by: Bona Fide
Here's what bothers me...AMD has always benefitted from better memory TIMINGS rather than memory speeds. So what's the advantage to DDR2?

the frequency will just have to be that much higher to make up for the looser timings.

DDR2-1000. @ CAS5 = Funky.

hmm...yes, so i suppose my theory doesn't always apply.

 

[Soccerman06]

Arent there 4-4-4-11 800mhz DDR2 out (ballistix)? Isnt that just as good or so as 2-2-2-5 400mhz DDR? I would hope there is something like 3-3-3-8 800mhz ddr2 by the middle of next year.

 

[monster64]

Why would AMD even need ddr2? The point of it for intel is that its quad pumped fsb @800 mhz (200x4) runs 1:1 with drr2-800. AMD doesn't use a quad pumped fsb or anything so ddr 400 is the standard. Will AMD change their fsb speed? I heard that ddr2 667 will be the standard.

 

[Bona Fide]

Originally posted by: monster64
Why would AMD even need ddr2? The point of it for intel is that its quad pumped fsb @800 mhz (200x4) runs 1:1 with drr2-800. AMD doesn't use a quad pumped fsb or anything so ddr 400 is the standard. Will AMD change their fsb speed? I heard that ddr2 667 will be the standard.

Maybe they'll move up to a 600MHz fsb like Yonah!!

...stupid CPU-Z errors.

 

[bunnyfubbles]

Originally posted by: Bona Fide
Here's what bothers me...AMD has always benefitted from better memory TIMINGS rather than memory speeds. So what's the advantage to DDR2?

Easy. Lower power requirements (1.8V vs. 2.5V) and higher capacities, and for less $ per GB. The big advantage of a 64bit OS (XP x64 and beyond) would be support for more than 4GB of ram, of which is far more realistic with DDR2 than DDR. I don't think it would be too hard to optimize the memory controller to favor bandwidth moreso than it does tighter timings, especially now that singlecore is on the decline, X2 and beyond is the future.

 

[Furen]

I'd guess they will be moving to a 333MHz HTT frequency and a default multiplier of 3x. Not to keep the FSB 1:1 since the "FSB" on A64s runs at full cpu speed, but rather to be able to GET a 333MHz clock for the ram from the CPU's operating clock using integer dividers (if you get the CPU clock from multiplying 333 by X you can use the same X as a divider to get the ram speed). If so then they'll probably be releasing both 2.66GHz and 2.33GHz (and a 3GHz part at some point, hopefully) parts, though how they'll fit into the current naming scheme I dont even want to think about...