RAM latency question

thr0xx · 05-20-2007, 09:51 PM

hey i recently purchased: http://www.tigerdirect.com/applicati...E=WEBLET03SHIP , and one of the main highlights of the memory stick is the 2-3-3-6 CAS latency. i am kind of new to memory upgrades of this type and i was wondering if there is anything i should do to take full advantage of this new memory stick. i dont really want to overclock but was mainly wondering about any settings i should fix in bios or whatever.

**also if anyone wants to let me know if this was a smart purchase or not and what they think is the best pc3200 RAM out there is i would appreciate it. thanks*****

**Rashiki** · 05-20-2007, 11:52 PM

The link is broken, just gives an error. Latencies are the timings RAM use to access, store and write data. These are expressed in numbers, and represent clock cycles. Generally the lower the timings, the faster the data gets accessed. However, as RAM speed increases in MHZ, timings are hard to keep low, and get higher.

As for anything special to do, no. Unless you manually set timings on your last module, the computer will determine the stock speeds and keep it there. If you're adding this module to one that's already there, you might be looking at trouble. Dual channel motherboards require matched pairs of modules to run correctly. Mismatching will only slow it down.

**speedster123** · 05-21-2007, 06:58 AM

Welcome
Are you running an amd.. or intel based board?
Post your specs on the complete system.

**Kalim** · 05-21-2007, 08:08 AM

As Rashiki stated, the link is broken.

ATM in time I'm using a system with PC3200 DDR SDRAM running @ 2-2-2-5-8 1T, which is quite quick although you can get better, notably DFI boards.

Latency, especially CT and CAS can make a good difference in system performance.

thr0xx · 05-21-2007, 08:37 AM

sorry bout the broken link...worked earlier sorry. here is the working link

http://www.tigerdirect.com/applicati...E=WEBLET03SHIP

also i am running a dell dimension 4600i. pentium 4 2.66ghz. geforce 6200 agp card. any other info needed?

**Kalim** · 05-21-2007, 09:16 AM

If you are getting the one RAM stick, then get into the BIOS after installation and drop the RAM timings to CAS 2, Command Rate 1, and/or additionally/alternatively it may offer another option whereby you can choose "Ultra" for the RAM settings. That would probably be 2-2-2-5-8 1T and offers a good boost from the stock settings.

That RAM is a solid choice. Although you don't want to OC at all, even OC'd further to DDR500, it can run these timings.

thr0xx · 05-21-2007, 09:54 AM

ok thanks, 1 more question, i already have 1.2g of ddr RAM installed. is it ok to leave that in or will it cause a problem?

thr0xx · 05-21-2007, 11:38 AM

ok thanks, 1 more question, i already have 1.2g of ddr RAM installed. is it ok to leave that in or will it cause a problem? i was hoping to take out 1 of the 128mb sticks and put in the 1gb corsair to give me around 2.1gb of RAM. will this work? my RAM modules are below.

Memory Module 1
Manufacturer : Micron
Model : 4VDDT1664AG-335C3
Serial Number : 4F00473A
Type : 128MB DDR-SDRAM
Technology : 4x(16Mx16)
Speed : PC2700U DDR-166
Standard Timings : 2.5-3-3-7 (tCL-tRCD-tRP-tRAS)
Version : 1.0
Date of Manufacture : Wednesday, November 12, 2003
Memory DC Line : 2.5V
Set Timing @ 167MHz : 2.5-3-3-7 (tCL-tRCD-tRP-tRAS)
Set Timing @ 133MHz : 2.0-2-2-6 (tCL-tRCD-tRP-tRAS)

Memory Module 2
Manufacturer : Micron
Model : 4VDDT1664AG-335C3
Serial Number : 4F004739
Type : 128MB DDR-SDRAM
Technology : 4x(16Mx16)
Speed : PC2700U DDR-166
Standard Timings : 2.5-3-3-7 (tCL-tRCD-tRP-tRAS)
Version : 1.0
Date of Manufacture : Wednesday, November 12, 2003
Memory DC Line : 2.5V
Set Timing @ 167MHz : 2.5-3-3-7 (tCL-tRCD-tRP-tRAS)
Set Timing @ 133MHz : 2.0-2-2-6 (tCL-tRCD-tRP-tRAS)

Memory Module 3
Manufacturer : Corsair
Model : VS512MB400
Type : 512MB DDR-SDRAM
Technology : 16x(32Mx8)
Speed : PC3200U DDR-200
Standard Timings : 2.5-3-3-8 (tCL-tRCD-tRP-tRAS)
Date of Manufacture : Saturday, December 25, 1999
Memory DC Line : 2.5V
Set Timing @ 200MHz : 2.5-3-3-8 (tCL-tRCD-tRP-tRAS)

Memory Module 4
Manufacturer : Corsair
Model : VS512MB400
Type : 512MB DDR-SDRAM
Technology : 16x(32Mx8)
Speed : PC3200U DDR-200
Standard Timings : 2.5-3-3-8 (tCL-tRCD-tRP-tRAS)
Date of Manufacture : Saturday, December 25, 1999
Memory DC Line : 2.5V
Set Timing @ 200MHz : 2.5-3-3-8 (tCL-tRCD-tRP-tRAS)

05-20-2007, 09:51 PM	#1 (permalink)
thr0xx Registered User Join Date: May 2007 Posts: 57 OS: Vista Home Premium My System	RAM latency question hey i recently purchased: http://www.tigerdirect.com/applicati...E=WEBLET03SHIP , and one of the main highlights of the memory stick is the 2-3-3-6 CAS latency. i am kind of new to memory upgrades of this type and i was wondering if there is anything i should do to take full advantage of this new memory stick. i dont really want to overclock but was mainly wondering about any settings i should fix in bios or whatever. also if anyone wants to let me know if this was a smart purchase or not and what they think is the best pc3200 RAM out there is i would appreciate it. thanks***

05-20-2007, 11:52 PM	#2 (permalink)
Rashiki Mentor Hardware Team Join Date: Sep 2005 Posts: 878 OS: Win XP Pro SP2	Re: RAM latency question The link is broken, just gives an error. Latencies are the timings RAM use to access, store and write data. These are expressed in numbers, and represent clock cycles. Generally the lower the timings, the faster the data gets accessed. However, as RAM speed increases in MHZ, timings are hard to keep low, and get higher. As for anything special to do, no. Unless you manually set timings on your last module, the computer will determine the stock speeds and keep it there. If you're adding this module to one that's already there, you might be looking at trouble. Dual channel motherboards require matched pairs of modules to run correctly. Mismatching will only slow it down. __________________ ASUS P5WD2 Premium v0709 \| Intel Prescott 3.2ghz \| 2gb Corsair XMS DDR2-800 PC2-6400 \| Sparkle Power 550w PSU \| ATI All-In-Wonder X600 Pro \| Sound Blaster Audigy 4 \| CoolerMaster Aluminum Case \| WD Raptor 76gb 10K RPM SATA HDD \|ASUS CD/DVD RW Combo Drive \| Mitsumi 7-in-1 Floppy Combo Drive \| Coolermaster Copper Heatsink

05-21-2007, 06:58 AM	#3 (permalink)
speedster123 Mentor Join Date: Oct 2006 Location: United States-New York-Long Island Posts: 5,212 OS: xp pro SP3	Re: RAM latency question Welcome Are you running an amd.. or intel based board? Post your specs on the complete system. __________________ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

05-21-2007, 08:08 AM	#4 (permalink)
Kalim Roaming To Help Join Date: Nov 2006 Posts: 5,642 OS: Many	Re: RAM latency question As Rashiki stated, the link is broken. ATM in time I'm using a system with PC3200 DDR SDRAM running @ 2-2-2-5-8 1T, which is quite quick although you can get better, notably DFI boards. Latency, especially CT and CAS can make a good difference in system performance.

05-21-2007, 08:37 AM	#5 (permalink)
thr0xx Registered User Join Date: May 2007 Posts: 57 OS: Vista Home Premium My System	Re: RAM latency question sorry bout the broken link...worked earlier sorry. here is the working link http://www.tigerdirect.com/applicati...E=WEBLET03SHIP also i am running a dell dimension 4600i. pentium 4 2.66ghz. geforce 6200 agp card. any other info needed?

05-21-2007, 09:16 AM	#6 (permalink)
Kalim Roaming To Help Join Date: Nov 2006 Posts: 5,642 OS: Many	Re: RAM latency question If you are getting the one RAM stick, then get into the BIOS after installation and drop the RAM timings to CAS 2, Command Rate 1, and/or additionally/alternatively it may offer another option whereby you can choose "Ultra" for the RAM settings. That would probably be 2-2-2-5-8 1T and offers a good boost from the stock settings. That RAM is a solid choice. Although you don't want to OC at all, even OC'd further to DDR500, it can run these timings.

05-21-2007, 09:54 AM	#7 (permalink)
thr0xx Registered User Join Date: May 2007 Posts: 57 OS: Vista Home Premium My System	Re: RAM latency question ok thanks, 1 more question, i already have 1.2g of ddr RAM installed. is it ok to leave that in or will it cause a problem?

05-21-2007, 11:38 AM	#8 (permalink)
thr0xx Registered User Join Date: May 2007 Posts: 57 OS: Vista Home Premium My System	Re: RAM latency question ok thanks, 1 more question, i already have 1.2g of ddr RAM installed. is it ok to leave that in or will it cause a problem? i was hoping to take out 1 of the 128mb sticks and put in the 1gb corsair to give me around 2.1gb of RAM. will this work? my RAM modules are below. Memory Module 1 Manufacturer : Micron Model : 4VDDT1664AG-335C3 Serial Number : 4F00473A Type : 128MB DDR-SDRAM Technology : 4x(16Mx16) Speed : PC2700U DDR-166 Standard Timings : 2.5-3-3-7 (tCL-tRCD-tRP-tRAS) Version : 1.0 Date of Manufacture : Wednesday, November 12, 2003 Memory DC Line : 2.5V Set Timing @ 167MHz : 2.5-3-3-7 (tCL-tRCD-tRP-tRAS) Set Timing @ 133MHz : 2.0-2-2-6 (tCL-tRCD-tRP-tRAS) Memory Module 2 Manufacturer : Micron Model : 4VDDT1664AG-335C3 Serial Number : 4F004739 Type : 128MB DDR-SDRAM Technology : 4x(16Mx16) Speed : PC2700U DDR-166 Standard Timings : 2.5-3-3-7 (tCL-tRCD-tRP-tRAS) Version : 1.0 Date of Manufacture : Wednesday, November 12, 2003 Memory DC Line : 2.5V Set Timing @ 167MHz : 2.5-3-3-7 (tCL-tRCD-tRP-tRAS) Set Timing @ 133MHz : 2.0-2-2-6 (tCL-tRCD-tRP-tRAS) Memory Module 3 Manufacturer : Corsair Model : VS512MB400 Type : 512MB DDR-SDRAM Technology : 16x(32Mx8) Speed : PC3200U DDR-200 Standard Timings : 2.5-3-3-8 (tCL-tRCD-tRP-tRAS) Date of Manufacture : Saturday, December 25, 1999 Memory DC Line : 2.5V Set Timing @ 200MHz : 2.5-3-3-8 (tCL-tRCD-tRP-tRAS) Memory Module 4 Manufacturer : Corsair Model : VS512MB400 Type : 512MB DDR-SDRAM Technology : 16x(32Mx8) Speed : PC3200U DDR-200 Standard Timings : 2.5-3-3-8 (tCL-tRCD-tRP-tRAS) Date of Manufacture : Saturday, December 25, 1999 Memory DC Line : 2.5V Set Timing @ 200MHz : 2.5-3-3-8 (tCL-tRCD-tRP-tRAS)