So you think DDR3's latencies are bad?

JAG87

Diamond Member
Jan 3, 2006
3,921
3
76
DDR3 JEDEC specifications:

DDR3-1066 (7-7-7)
DDR3-1333 (9-9-9)


Timeline
----------

Kingston tries to show off with DDR3-1333 (7-7-7)
http://www.anandtech.com/memory/showdoc.aspx?i=2996&p=2

Supertalent owns Kingston
http://www.nordichardware.com/news,6565.html

and Victor owns them even more
http://www.xtremesystems.org/f...howthread.php?t=150210


by no means do I think that running your DDR3 at 2.25v is healthy, unless you have phase change or LN2 for your memory. but that DDR3-1600 (6-6-5) with 2.1v sure looks sweet. and hey, if you are more parsimonious with your voltage, DDR3-1600 (7-7-6) with 1.8v might tickle your pickle.


:beer:
 

BenchZowner

Senior member
Dec 9, 2006
380
0
0
These Micron ICs have a standard voltage of 1.8V, and are capable of holding up voltages up to 2.1V for prolonged periods.
Been running the first kit for 2 weeks @ 2.05V and it's still working fine of course and benching like a champ.

Surely Micron seems to be the winner in DDR3 as well ( they already own everything in DDR2 )

Interestingly Elpida is doing good in DDR3 ( way better than what they used to do in DDR1 & DDR2 )
 

firewolfsm

Golden Member
Oct 16, 2005
1,848
29
91
You would need to run DDR3 1600 at 8-8-8-18 to equal average DDR2 800 speeds, give or take. It looks like they already passed that, maybe they'll get to 6-6-6 at those speeds next year, it'll be faster.
 

Acanthus

Lifer
Aug 28, 2001
19,915
2
76
ostif.org
Originally posted by: firewolfsm
You would need to run DDR3 1600 at 8-8-8-18 to equal average DDR2 800 speeds, give or take. It looks like they already passed that, maybe they'll get to 6-6-6 at those speeds next year, it'll be faster.

But the difference between DDR2 533 and DDR2 800 is about 2% in most real applications.

I think video encoding and compressing files are the only examples i can think of where its larger.

So if you do a lot of encoding or somehow find a need to rar stuff all day, you can benefit from spending enormous amounts on DDR3.

I make the same argument for value ram vs overclocking ram. Spend the money elsewhere and get tangible gains vs artificial ones.
 

lopri

Elite Member
Jul 27, 2002
13,211
597
126
<div class="FTQUOTE"><begin quote>Originally posted by: BenchZowner
Prices gonna drop in a few months ( september seems like it )</end quote></div>
That's a very optimistic view. And 2.0V+ for DDR3 is crazy, IMO and I would worry about a long-term stability. (6 months +)

And I haven't heard anything yet about 2GB DDR3 sticks. If anything, I'd predict that folks will be more interested in high-performance 2GB DDR2 sticks than 1GB DDR3 sticks in coming months. Let's face it. 2GB isn't adequate anymore for enthusiasts' setup. I think it's really silly that those boutique builders sell machines spec'ed like overclocked QX6800 and 8800 GTX SLI, RAID'ed Raptors, etc. and equip it with mere 2x1GB or RAM.
 

Acanthus

Lifer
Aug 28, 2001
19,915
2
76
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Originally posted by: lopri
<div class="FTQUOTE"><begin quote>Originally posted by: BenchZowner
Prices gonna drop in a few months ( september seems like it )</end quote></div>
That's a very optimistic view. And 2.0V+ for DDR3 is crazy, IMO and I would worry about a long-term stability. (6 months +)

And I haven't heard anything yet about 2GB DDR3 sticks. If anything, I'd predict that folks will be more interested in high-performance 2GB DDR2 sticks than 1GB DDR3 sticks in coming months. Let's face it. 2GB isn't adequate anymore for enthusiasts' setup. I think it's really silly that those boutique builders sell machines spec'ed like overclocked QX6800 and 8800 GTX SLI, RAID'ed Raptors, etc. and equip it with mere 2x1GB or RAM.

Very few high end systems in homes will utilize more than 2gb of memory.

I can only name one game i know of that can break the 2GB mark. Supreme Commander on 8 players with more than 1000 units per side.
 

JAG87

Diamond Member
Jan 3, 2006
3,921
3
76
you guys are missing the point here. JEDEC is

DDR3-1066 (7-7-7)
DDR3-1333 (9-9-9)
DDR3-1600 (10-10-10)

but this is the way its shaping up price wise:

DDR3-1066 (7-7-7) = DDR2-667 (5-5-5) <---- value for average user
DDR3-1066 (6-6-6) = DDR2-667 (4-4-4) <---- great for average user
DDR3-1066 (5-5-5) = DDR2-667 (3-3-3) <---- performance for average user
DDR3-1333 (9-9-9) = DDR2-800 (5-5-5) <---- value for gamers
DDR3-1333 (7-7-7) = DDR2-800 (4-4-4) <---- great for gamers
DDR3-1333 (6-6-6) = DDR2-800 (3-3-3) <---- performance for gamers
DDR3-1600 (8-8-8) = DDR2-1066 (5-5-5) <---- value for overclockers
DDR3-1600 (7-7-7) = DDR2-1066 (4-4-4) <---- great for overclockers
DDR3-1600 (6-6-6) = DDR2-1111 (4-4-4) <--- insanely priced for overclockers
DDR3-1600+ (8-8-8) = DDR2-1066+ (5-5-5) <--- insanely priced for the heavy fsb overclockers


where Im getting at, is that DDR3-1333 (7-7-7) will be VERY affordable, something that you might not believe right now. DDR3-1600 (8-8-8) will also be very affordable. not bad for a roadmap, dont you think...
 

Acanthus

Lifer
Aug 28, 2001
19,915
2
76
ostif.org
<div class="FTQUOTE"><begin quote>Originally posted by: JAG87
you guys are missing the point here. JEDEC is

DDR3-1066 (7-7-7)
DDR3-1333 (9-9-9)
DDR3-1600 (10-10-10)

but this is the way its shaping up price wise:

DDR3-1066 (7-7-7) = DDR2-667 (5-5-5) <---- value for average user
DDR3-1066 (6-6-6) = DDR2-667 (4-4-4) <---- great for average user
DDR3-1066 (5-5-5) = DDR2-667 (3-3-3) <---- performance for average user
DDR3-1333 (9-9-9) = DDR2-800 (5-5-5) <---- value for gamers
DDR3-1333 (7-7-7) = DDR2-800 (4-4-4) <---- great for gamers
DDR3-1333 (6-6-6) = DDR2-800 (3-3-3) <---- performance for gamers
DDR3-1600 (8-8-8) = DDR2-1066 (5-5-5) <---- value for overclockers
DDR3-1600 (7-7-7) = DDR2-1066 (4-4-4) <---- great for overclockers
DDR3-1600 (6-6-6) = DDR2-1111 (4-4-4) <--- insanely priced for overclockers
DDR3-1600+ (8-8-8) = DDR2-1066+ (5-5-5) <--- insanely priced for the heavy fsb overclockers


where Im getting at, is that DDR3-1333 (7-7-7) will be VERY affordable, something that you might not believe right now. DDR3-1600 (8-8-8) will also be very affordable. not bad for a roadmap, dont you think...</end quote></div>

Your analogies from DDR3 to DDR2 are probably accurate, but your comments on the side are pretty laughable.

DDR2 533 to DDR2 1066 at the same fsb and other settings will show little to no performance change across the board, especially in gaming.
 

fire400

Diamond Member
Nov 21, 2005
5,204
21
81
Originally posted by: Acanthus
If only it gave you any performance at all.

running stock, upto the indivitual. but if you're overclockin' - then most definetly..
 

JAG87

Diamond Member
Jan 3, 2006
3,921
3
76
Originally posted by: Acanthus
<div class="FTQUOTE"><begin quote>Originally posted by: JAG87
you guys are missing the point here. JEDEC is

DDR3-1066 (7-7-7)
DDR3-1333 (9-9-9)
DDR3-1600 (10-10-10)

but this is the way its shaping up price wise:

DDR3-1066 (7-7-7) = DDR2-667 (5-5-5) <---- value for average user
DDR3-1066 (6-6-6) = DDR2-667 (4-4-4) <---- great for average user
DDR3-1066 (5-5-5) = DDR2-667 (3-3-3) <---- performance for average user
DDR3-1333 (9-9-9) = DDR2-800 (5-5-5) <---- value for gamers
DDR3-1333 (7-7-7) = DDR2-800 (4-4-4) <---- great for gamers
DDR3-1333 (6-6-6) = DDR2-800 (3-3-3) <---- performance for gamers
DDR3-1600 (8-8-8) = DDR2-1066 (5-5-5) <---- value for overclockers
DDR3-1600 (7-7-7) = DDR2-1066 (4-4-4) <---- great for overclockers
DDR3-1600 (6-6-6) = DDR2-1111 (4-4-4) <--- insanely priced for overclockers
DDR3-1600+ (8-8-8) = DDR2-1066+ (5-5-5) <--- insanely priced for the heavy fsb overclockers


where Im getting at, is that DDR3-1333 (7-7-7) will be VERY affordable, something that you might not believe right now. DDR3-1600 (8-8-8) will also be very affordable. not bad for a roadmap, dont you think...</end quote></div>

Your analogies from DDR3 to DDR2 are probably accurate, but your comments on the side are pretty laughable.

DDR2 533 to DDR2 1066 at the same fsb and other settings will show little to no performance change across the board, especially in gaming.


Im not gonna lie, your right. But its still nice to have high speeds and tight timings, especially if they don't cost a pretty penny!
 

StopSign

Senior member
Dec 15, 2006
986
0
0
When will we actually need DDR3 though? CPUs still haven't caught up to DDR2-800 yet. DDR2 started up when CPUs hit the brick wall at 200 MHz FSB. Right now we're only at 333. DDR2 only approaches its limit when the FSB is clocked to insane (and usually unreachable) levels.

With DDR3 you'll need a huge divider just to run the memory at stock and the performance will be unnoticeable at this point. Is DDR3 just an architectural advancement (i.e. features, voltage, etc..)?
 

Acanthus

Lifer
Aug 28, 2001
19,915
2
76
ostif.org
Well as we add more and more cores to CPUs, bandwidth utilization will rise.

Just a wild stab in the dark estimate, but id bet with the right application that utilizes all 4 cores, and with all 4 making memory reads and writes, you might be able to reach the limits of DDR2.

There is no such application to my knowledge, but it is possible.
 

JAG87

Diamond Member
Jan 3, 2006
3,921
3
76
Originally posted by: Acanthus
Well as we add more and more cores to CPUs, bandwidth utilization will rise.

Just a wild stab in the dark estimate, but id bet with the right application that utilizes all 4 cores, and with all 4 making memory reads and writes, you might be able to reach the limits of DDR2.

There is no such application to my knowledge, but it is possible.

lets just say you will reach the limits of the front side bullshit. just look at hypertransport. memory read and write speeds are twice as fast with the same memory.

but guys, dont forget the most important feature of DDR3. memory density. 8GB modules anyone? how does a 16GB kit of DDR3 sound?
 

Acanthus

Lifer
Aug 28, 2001
19,915
2
76
ostif.org
Originally posted by: JAG87
<div class="FTQUOTE"><begin quote>Originally posted by: Acanthus
Well as we add more and more cores to CPUs, bandwidth utilization will rise.

Just a wild stab in the dark estimate, but id bet with the right application that utilizes all 4 cores, and with all 4 making memory reads and writes, you might be able to reach the limits of DDR2.

There is no such application to my knowledge, but it is possible.</end quote></div>

lets just say you will reach the limits of the front side bullshit. just look at hypertransport. memory read and write speeds are twice as fast with the same memory.

but guys, dont forget the most important feature of DDR3. memory density. 8GB modules anyone? how does a 16GB kit of DDR3 sound?

the density increases are nice

fsb really isnt the limitation on intel CPUs.

Its not like AMD is getting large gains from memory clock and latency changes.
 

JAG87

Diamond Member
Jan 3, 2006
3,921
3
76
Originally posted by: Acanthus
<div class="FTQUOTE"><begin quote>Originally posted by: JAG87
<div class="FTQUOTE"><begin quote>Originally posted by: Acanthus
Well as we add more and more cores to CPUs, bandwidth utilization will rise.

Just a wild stab in the dark estimate, but id bet with the right application that utilizes all 4 cores, and with all 4 making memory reads and writes, you might be able to reach the limits of DDR2.

There is no such application to my knowledge, but it is possible.</end quote></div>

lets just say you will reach the limits of the front side bullshit. just look at hypertransport. memory read and write speeds are twice as fast with the same memory.

but guys, dont forget the most important feature of DDR3. memory density. 8GB modules anyone? how does a 16GB kit of DDR3 sound?</end quote></div>

the density increases are nice

fsb really isnt the limitation on intel CPUs.

Its not like AMD is getting large gains from memory clock and latency changes.


but the synthetic numbers are nice though, you cant deny that...

peace,
 

Acanthus

Lifer
Aug 28, 2001
19,915
2
76
ostif.org
Originally posted by: JAG87
<div class="FTQUOTE"><begin quote>Originally posted by: Acanthus
<div class="FTQUOTE"><begin quote>Originally posted by: JAG87
<div class="FTQUOTE"><begin quote>Originally posted by: Acanthus
Well as we add more and more cores to CPUs, bandwidth utilization will rise.

Just a wild stab in the dark estimate, but id bet with the right application that utilizes all 4 cores, and with all 4 making memory reads and writes, you might be able to reach the limits of DDR2.

There is no such application to my knowledge, but it is possible.</end quote></div>

lets just say you will reach the limits of the front side bullshit. just look at hypertransport. memory read and write speeds are twice as fast with the same memory.

but guys, dont forget the most important feature of DDR3. memory density. 8GB modules anyone? how does a 16GB kit of DDR3 sound?</end quote></div>

the density increases are nice

fsb really isnt the limitation on intel CPUs.

Its not like AMD is getting large gains from memory clock and latency changes.</end quote></div>


but the synthetic numbers are nice though, you cant deny that...

peace,

Sandra and SuperPi drive memory sales
 
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