3ns memory

andy38 · 17th October 2006, 3:17 PM

Does anyone what the max speed that 3ns ddr2 memory can do. It's on kingston ddr2 667 but i need to know if it will overclock aswell as my ddr2 533 which is 3.75ns. 350 @ 1:1 for ddr2 533 is good i think.

Hope you can understand this post coz i know FA about memory timings, i will be will be buying some in the morning cant afford ddr2 800.

Thanks.

terrastrife · 17th October 2006, 4:04 PM

overclocking = no regard for specifications. if it can do it, it can do it.

theres only one way to find out.

Dezza Bot · 17th October 2006, 4:27 PM

In theory at least 3.0ns memory > 3.7ns memory for overclocking... but as it's been said..
theres only one way to find out.

mr_mordred2095 · 17th October 2006, 4:43 PM

I've got the same samsung ram as you. CD5.

Sits on 800 5-5-5-11 2.1v all day long.

Does 900 unstable.

andy38 · 17th October 2006, 8:12 PM

Quote:

Originally Posted by mr_mordred2095

I've got the same samsung ram as you. CD5.

Sits on 800 5-5-5-11 2.1v all day long.

Does 900 unstable.

Is yours running at 1:1.

mr_mordred2095 · 17th October 2006, 10:09 PM

yep. E6300es @ 2.8 (400x7) for everyday use.

I honestly think this RAM is capable of so much more if I had more voltage to play with. I'll stop by DSE or jaycar tomorrow and grab my resistor for my volt mod

Boxman · 17th October 2006, 10:39 PM

Nano-second ratings are just factory ratings. They usually have little direct influence on overclockability. It's simply a measure of access time (or something to that effect) at a specific CAS latency and RAM frequency. 3ns generally designates DDR2-667 5-5-5-15 chips.

My Micron based Corsair Value Select is 3ns RAM but it will clock well past 667MHz and into 1000MHz+ on the same 5-5-5-15 timings. It all depends on the chips and PCB.

The only place 'n's ratings come into prevalent use are when you start talking GDDR memory as manufacturers tend to underclock the RAM to a lower frequency than what it is rated for straight out of the IC manufacturer. So they not only clock up to the original IC manufacturer's rated speed but usually past this also.

andy38 · 18th October 2006, 5:45 AM

Quote:

Originally Posted by mr_mordred2095

yep. E6300es @ 2.8 (400x7) for everyday use.

I honestly think this RAM is capable of so much more if I had more voltage to play with. I'll stop by DSE or jaycar tomorrow and grab my resistor for my volt mod

What motherbaord are you running & what sort of cooling. Could it be because i'm running 4 * 512 dimms.

andy38 · 18th October 2006, 6:42 AM

Thanks people saved me buying new memory

400*7

400*8

Now i will try higher FSB's

mr_mordred2095 · 18th October 2006, 8:22 AM

Change the latency to 5-5-5-12 from 5-6-6-15. Has no effect on max clock speed.

I'm running an Asus P5B.

This RAM get's sketchy at 425, it's not folding stable, as it ends WU's early, but it's fine for games and everything else.

andy38 · 18th October 2006, 8:30 AM

Thanks for the info, pitty i can run it at 9*400 it gets into windows and BSOD straight away maybe with better cooling using stock ATM.

mr_mordred2095 · 18th October 2006, 9:10 AM

drop the cpu multiplier and see how it goes

edit: silly me, saw you already did

andy38 · 18th October 2006, 9:47 AM

The new timings work i'm getting better memory bandwidth benchmarks.

mr_mordred2095 · 18th October 2006, 9:49 AM

These new settings should be stable. I'll give mine a bit of voltage tonight and I'll let you know how they hold up.

Boxman · 18th October 2006, 6:08 PM

ns ratings do not seem to take into account CAs latencies as I thought. It is simply a measure of non DDR or true operating frequency. Manufacturers round off to the nearest digits. I.e:

3.0ns = 1s/333,000,000Hz
1.4ns = 1s/700,000,000Hz
1.25ns = 1s/800,000,000Hz

17th October 2006, 3:17 PM	#1
andy38 Member Join Date: Feb 2006 Location: Mornington Peninsula, Vic Posts: 187	3ns memory Does anyone what the max speed that 3ns ddr2 memory can do. It's on kingston ddr2 667 but i need to know if it will overclock aswell as my ddr2 533 which is 3.75ns. 350 @ 1:1 for ddr2 533 is good i think. Hope you can understand this post coz i know FA about memory timings, i will be will be buying some in the morning cant afford ddr2 800. Thanks. __________________ E6600 @ 3.2Ghz 3669, 965P-S3, 1Gig kingston ddr2 533 and 2gig nanya ddr2 667 @ ddr2 732 can go higher, Vista 6000 with 2gig readyboost, albatron 6600GT 500/1000@550/1100, 22" viewmaster LCD. Folding@Home 22000 Points Milestone* for OCAU

17th October 2006, 4:04 PM	#2
terrastrife Member Join Date: Jun 2006 Location: ADL/SA The Monopoly State Posts: 16,022	overclocking = no regard for specifications. if it can do it, it can do it. theres only one way to find out. __________________ D90/35mm1.8/SB900 Main/X58-USB3 F5/4GHz i7 950/48GB RipjawsZ/GTX 670/SSD 520 Series unRAID5/X2 4000+/30TB/16 Disk MidiTower/NeoHE

17th October 2006, 4:27 PM	#3
Dezza Bot Member Join Date: Aug 2004 Location: Central Coast, NSW Posts: 4,150	In theory at least 3.0ns memory > 3.7ns memory for overclocking... but as it's been said.. theres only one way to find out. __________________ There is a harsh truth on what it means to be an independent, iPad-bashing geek. “As a mainstream, closed-platform device whose major claim to fame is ease of use and sex appeal, the iPad is everything that they are not.”

17th October 2006, 10:09 PM	#6
mr_mordred2095 Member Join Date: Mar 2004 Location: Brisbane Posts: 3,603	yep. E6300es @ 2.8 (400x7) for everyday use. I honestly think this RAM is capable of so much more if I had more voltage to play with. I'll stop by DSE or jaycar tomorrow and grab my resistor for my volt mod Last edited by mr_mordred2095; 17th October 2006 at 10:17 PM.

17th October 2006, 10:39 PM	#7
Boxman Member Join Date: Jul 2005 Location: Victoria Posts: 1,794	Nano-second ratings are just factory ratings. They usually have little direct influence on overclockability. It's simply a measure of access time (or something to that effect) at a specific CAS latency and RAM frequency. 3ns generally designates DDR2-667 5-5-5-15 chips. My Micron based Corsair Value Select is 3ns RAM but it will clock well past 667MHz and into 1000MHz+ on the same 5-5-5-15 timings. It all depends on the chips and PCB. The only place 'n's ratings come into prevalent use are when you start talking GDDR memory as manufacturers tend to underclock the RAM to a lower frequency than what it is rated for straight out of the IC manufacturer. So they not only clock up to the original IC manufacturer's rated speed but usually past this also. __________________ AMD Opteron 170 LCB9E 0652MPMW + CNPS9500LED \| GA K8NXP-SLi \| Corsair VS 2x1024Mb on BP Palit 256MB 7900GS \| Seagate 7200.10 80GB & 320GB SATA HD \| Antec NeoHE 550W Good trades: pomdomz, DXPetti, B16B, [D]ark[A]cid, Kenny12

17th October 2006, 4:43 PM	#4
mr_mordred2095 Member Join Date: Mar 2004 Location: Brisbane Posts: 3,603	I've got the same samsung ram as you. CD5. Sits on 800 5-5-5-11 2.1v all day long. Does 900 unstable.

18th October 2006, 6:42 AM	#9
andy38 Member Join Date: Feb 2006 Location: Mornington Peninsula, Vic Posts: 187	Thanks people saved me buying new memory 4007 4008 Now i will try higher FSB's __________________ E6600 @ 3.2Ghz 3669, 965P-S3, 1Gig kingston ddr2 533 and 2gig nanya ddr2 667 @ ddr2 732 can go higher, Vista 6000 with 2gig readyboost, albatron 6600GT 500/1000@550/1100, 22" viewmaster LCD. Folding@Home 22000 Points Milestone* for OCAU

18th October 2006, 8:22 AM	#10
mr_mordred2095 Member Join Date: Mar 2004 Location: Brisbane Posts: 3,603	Change the latency to 5-5-5-12 from 5-6-6-15. Has no effect on max clock speed. I'm running an Asus P5B. This RAM get's sketchy at 425, it's not folding stable, as it ends WU's early, but it's fine for games and everything else.

18th October 2006, 8:30 AM	#11
andy38 Member Join Date: Feb 2006 Location: Mornington Peninsula, Vic Posts: 187	Thanks for the info, pitty i can run it at 9400 it gets into windows and BSOD straight away maybe with better cooling using stock ATM. __________________ E6600 @ 3.2Ghz 3669, 965P-S3, 1Gig kingston ddr2 533 and 2gig nanya ddr2 667 @ ddr2 732 can go higher, Vista 6000 with 2gig readyboost, albatron 6600GT 500/1000@550/1100, 22" viewmaster LCD. Folding@Home 22000 Points Milestone for OCAU

18th October 2006, 9:10 AM	#12
mr_mordred2095 Member Join Date: Mar 2004 Location: Brisbane Posts: 3,603	drop the cpu multiplier and see how it goes edit: silly me, saw you already did

18th October 2006, 9:47 AM	#13
andy38 Member Join Date: Feb 2006 Location: Mornington Peninsula, Vic Posts: 187	The new timings work i'm getting better memory bandwidth benchmarks. __________________ E6600 @ 3.2Ghz 3669, 965P-S3, 1Gig kingston ddr2 533 and 2gig nanya ddr2 667 @ ddr2 732 can go higher, Vista 6000 with 2gig readyboost, albatron 6600GT 500/1000@550/1100, 22" viewmaster LCD. Folding@Home 22000 Points Milestone* for OCAU

18th October 2006, 9:49 AM	#14
mr_mordred2095 Member Join Date: Mar 2004 Location: Brisbane Posts: 3,603	These new settings should be stable. I'll give mine a bit of voltage tonight and I'll let you know how they hold up.

18th October 2006, 6:08 PM	#15
Boxman Member Join Date: Jul 2005 Location: Victoria Posts: 1,794	ns ratings do not seem to take into account CAs latencies as I thought. It is simply a measure of non DDR or true operating frequency. Manufacturers round off to the nearest digits. I.e: 3.0ns = 1s/333,000,000Hz 1.4ns = 1s/700,000,000Hz 1.25ns = 1s/800,000,000Hz __________________ AMD Opteron 170 LCB9E 0652MPMW + CNPS9500LED \| GA K8NXP-SLi \| Corsair VS 2x1024Mb on BP Palit 256MB 7900GS \| Seagate 7200.10 80GB & 320GB SATA HD \| Antec NeoHE 550W Good trades: pomdomz, DXPetti, B16B, [D]ark[A]cid, Kenny12