DDR -> DDRII -> DDRIII ... I won't have a choice but to get it, albeit with hopefully a Turion chipset when I go to college this fall. Meh. I'll use whate ...

ellement · 03-16-2005, 06:42 PM

I won't have a choice but to get it, albeit with hopefully a Turion chipset when I go to college this fall. Meh. I'll use whatever I get until it irretrievably craps out, and then get something with DDR-whatever.

subtle_spectre · 03-16-2005, 07:36 PM

Exactly...which is what has kept me from going for, say, the z71v. I just wonder, though, when and if DDR tech systems will come down in price?

smilepak · 03-17-2005, 08:20 PM

Something to consider:

http://www4.tomshardware.com/mobile/...alviso-03.html

From what this chart is basically pointing out, using Dual Channel DDR II is basically a waste of money because the FSB can't seems to handle it at the moment.

So laptop with PC3200 Dual Channel DDR should be a good match for the new Sonoma!!

or Single channel DDRII

B Nietsnie · 03-17-2005, 08:40 PM

I quickly skimmed thorugh this thread, and didn't find a clean answer to a question of mine.

Does DDR always outperform DDR2? If not, and which speeds/latencies does DDR2 outperform DDR?

HardBall · 03-17-2005, 08:49 PM

Quote:

Originally Posted by B Nietsnie

I quickly skimmed thorugh this thread, and didn't find a clean answer to a question of mine.

Does DDR always outperform DDR2? If not, and which speeds/latencies does DDR2 outperform DDR?

It entirely depends on the type of application. Where memory access is in large continuous blocks, such as encoding tasks, latency matters little, so DDR-II will be almost as fast as DDR-I of the same speed (PC2-4200 will be faster than PC-3200 in this case). But if memory access is done over a large number of locations within a memory bank in a short period of time, then the latency will play a huge role, such as in gaming and scientific apps. (so in these cases, we might need to see PC2-6400 in order to see significant improvement over DDR-I)

Djembe · 03-17-2005, 08:51 PM

As I understand it, DDR2 does outperform DDR, but only by 5%. And the current advantage of DDR2 is that notebook DDR can't run at 533 Mhz.

smilepak · 03-17-2005, 09:57 PM

Quote:

Originally Posted by Djembe_Rob

As I understand it, DDR2 does outperform DDR, but only by 5%. And the current advantage of DDR2 is that notebook DDR can't run at 533 Mhz.

Well according to Tom's article, Dual Channel DDR2 outperform Single Channel DDR2 by 5%.

I think that is where the confusion and 5% being toss around.

But from looking at the chart, it seems that the Single Channel DDR2 will be able to take advantage of the FSB and the DUAL channel DDR PC3200 will be as well.

B Nietsnie · 03-17-2005, 10:37 PM

So dual-channel DDR2 is better or worse than single-channel DDR2...?

Djembe · 03-17-2005, 10:40 PM

it's better by 5%.

subtle_spectre · 03-18-2005, 03:50 AM

Hmmm....I thought the Tom's article was saying that the new Sonoma scheme with DDR2 was 5% faster than the older Centrino platform with DDR...

subtle_spectre · 03-18-2005, 03:51 AM

Hmmm....I thought the Tom's article was saying that the new Sonoma scheme with DDR2 was 5% faster than the older Centrino platform with DDR...I didn't think it was just a function of memory type.

smilepak · 03-18-2005, 08:36 AM

Nope he ment 5% faster for dual channel DDR2 vs single channel DDR2

Quote:

As the benchmark results tables reveal, the speed advantage afforded by the new platform's dual-channel DDR2-533 memory is a maximum of 5% compared to single-channel mode.

http://www4.tomshardware.com/mobile/...alviso-23.html

smilepak · 03-18-2005, 02:03 PM

Wouldn't you want this in your laptop?

http://www.digitimes.com/news/a20050315PR207.html

TwinMOS to produce DDR2-800 modules in June

smilepak · 03-19-2005, 02:37 PM

Latency Test between DDR vs the new DDR2 lower latency!

http://www.xbitlabs.com/articles/mem...dr2-ddr_3.html

smilepak · 03-19-2005, 02:39 PM

DDR vs DDR2 Encoding Benchmark
http://www.anandtech.com/cpuchipsets...px?i=2088&p=17

Quote:

It appears that you really will not lose any performance in choosing a 915 motherboard with DDR support instead of 915 with DDR2. With initial launch prices of DDR2 still considerably higher than DDR prices, you can choose a 915 board with DDR and not have to worry about losing any performance.

As prices for DDR2 drop more in line with DDR, the choice becomes a little more interesting. DDR2 will mature beyond the current 4-4-4 timings, and as timings and headroom improve, DDR2 becomes a more interesting choice for memory.

03-16-2005, 07:36 PM	#17
subtle_spectre Registered User Join Date: Jan 2005 Posts: 244 Credits: -243	Exactly...which is what has kept me from going for, say, the z71v. I just wonder, though, when and if DDR tech systems will come down in price? __________________ Dell I8600...PM 1.7...ati 9600/m10/128mb...Toshiba wuxga...1024 RAM...IBM 80gb HDD...Hitachi 4x DVD r/w 9300...PM 760...nvidia 6800/256mb...wuxga 17" Truelife...2048 mb Kingston ram...8x DVD r/w...60gb 7200rpm HDD

03-17-2005, 08:51 PM	#21
Djembe Rising from the ashes Join Date: Mar 2005 Location: in the flames Posts: 23,483 Reviews: 5 Benchmarks: 50 Credits: 126,325	As I understand it, DDR2 does outperform DDR, but only by 5%. And the current advantage of DDR2 is that notebook DDR can't run at 533 Mhz. __________________ Notebook Forums / Desktop Forums Administrator 631 bans and counting...

03-17-2005, 10:40 PM	#24
Djembe Rising from the ashes Join Date: Mar 2005 Location: in the flames Posts: 23,483 Reviews: 5 Benchmarks: 50 Credits: 126,325	it's better by 5%. __________________ Notebook Forums / Desktop Forums Administrator 631 bans and counting...

03-18-2005, 03:50 AM	#25
subtle_spectre Registered User Join Date: Jan 2005 Posts: 244 Credits: -243	Hmmm....I thought the Tom's article was saying that the new Sonoma scheme with DDR2 was 5% faster than the older Centrino platform with DDR... __________________ Dell I8600...PM 1.7...ati 9600/m10/128mb...Toshiba wuxga...1024 RAM...IBM 80gb HDD...Hitachi 4x DVD r/w 9300...PM 760...nvidia 6800/256mb...wuxga 17" Truelife...2048 mb Kingston ram...8x DVD r/w...60gb 7200rpm HDD

03-18-2005, 03:51 AM	#26
subtle_spectre Registered User Join Date: Jan 2005 Posts: 244 Credits: -243	Hmmm....I thought the Tom's article was saying that the new Sonoma scheme with DDR2 was 5% faster than the older Centrino platform with DDR...I didn't think it was just a function of memory type. __________________ Dell I8600...PM 1.7...ati 9600/m10/128mb...Toshiba wuxga...1024 RAM...IBM 80gb HDD...Hitachi 4x DVD r/w 9300...PM 760...nvidia 6800/256mb...wuxga 17" Truelife...2048 mb Kingston ram...8x DVD r/w...60gb 7200rpm HDD

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03-16-2005, 06:42 PM	#16
ellement mobile neophyte Join Date: Feb 2005 Posts: 229 Credits: -283	I won't have a choice but to get it, albeit with hopefully a Turion chipset when I go to college this fall. Meh. I'll use whatever I get until it irretrievably craps out, and then get something with DDR-whatever.

03-17-2005, 08:20 PM	#18
smilepak You've Been Modded! Join Date: Mar 2004 Posts: 4,633 Reviews: 1 Credits: 1,544	Something to consider: http://www4.tomshardware.com/mobile/...alviso-03.html From what this chart is basically pointing out, using Dual Channel DDR II is basically a waste of money because the FSB can't seems to handle it at the moment. So laptop with PC3200 Dual Channel DDR should be a good match for the new Sonoma!! or Single channel DDRII

03-17-2005, 08:40 PM	#19
B Nietsnie Albeit Join Date: Jul 2004 Location: Toronto, ON Posts: 2,522 Credits: 428	I quickly skimmed thorugh this thread, and didn't find a clean answer to a question of mine. Does DDR always outperform DDR2? If not, and which speeds/latencies does DDR2 outperform DDR?

03-17-2005, 10:37 PM	#23
B Nietsnie Albeit Join Date: Jul 2004 Location: Toronto, ON Posts: 2,522 Credits: 428	So dual-channel DDR2 is better or worse than single-channel DDR2...?

03-18-2005, 02:03 PM	#28
smilepak You've Been Modded! Join Date: Mar 2004 Posts: 4,633 Reviews: 1 Credits: 1,544	Wouldn't you want this in your laptop? http://www.digitimes.com/news/a20050315PR207.html TwinMOS to produce DDR2-800 modules in June

03-19-2005, 02:37 PM	#29
smilepak You've Been Modded! Join Date: Mar 2004 Posts: 4,633 Reviews: 1 Credits: 1,544	Latency Test between DDR vs the new DDR2 lower latency! http://www.xbitlabs.com/articles/mem...dr2-ddr_3.html

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