Jump to content


 


Register a free account to unlock additional features at BleepingComputer.com
Welcome to BleepingComputer, a free community where people like yourself come together to discuss and learn how to use their computers. Using the site is easy and fun. As a guest, you can browse and view the various discussions in the forums, but can not create a new topic or reply to an existing one unless you are logged in. Other benefits of registering an account are subscribing to topics and forums, creating a blog, and having no ads shown anywhere on the site.


Click here to Register a free account now! or read our Welcome Guide to learn how to use this site.

Photo

Ram


  • Please log in to reply
11 replies to this topic

#1 benjaminavi1994

benjaminavi1994

  • Members
  • 90 posts
  • OFFLINE
  •  
  • Local time:03:17 AM

Posted 03 May 2011 - 12:27 AM

Hi


Can any body Explain to me the CAS latency number in Rams also Should number be lower or higher for DDR2 Rams?

BC AdBot (Login to Remove)

 


#2 booterbotter

booterbotter

  • Members
  • 299 posts
  • OFFLINE
  •  
  • Gender:Male
  • Location:Pearl of the Orient
  • Local time:05:47 AM

Posted 03 May 2011 - 12:56 AM

The lower the number, the better.

http://en.wikipedia.org/wiki/CAS_latency


Patience is a true virtue. Never give up, never surrender.
BleepingComputer.com Message Board Rules


#3 benjaminavi1994

benjaminavi1994
  • Topic Starter

  • Members
  • 90 posts
  • OFFLINE
  •  
  • Local time:03:17 AM

Posted 03 May 2011 - 02:50 AM

Hi


Thanks but I have already been through wiki


Gaming Rams from Gskill have high numbers but are DDR3 so am confused


Lets say I upgrade 1 more gig of ram does the CAS number has to be same or lesser the better

#4 Platypus

Platypus

  • Global Moderator
  • 15,486 posts
  • ONLINE
  •  
  • Gender:Male
  • Location:Australia
  • Local time:08:47 AM

Posted 03 May 2011 - 03:44 AM

Latency in any system is a measure of how long it takes after a request for data until the data is present to be read. The lower the number, the shorter the wait, so lower latency = higher performance.

If you're adding to existing memory, aim to get the same latency specification if possible, or lower if you want to allow for future matching. If new memory has lower latency, it will be run at the higher latency setting (more waiting) to match the current memory. If you bought RAM with higher latency, the memory you have now would then be run at the slower latency to match it. If you are replacing the RAM entirely, getting lower latency will maximize performance, although how much depends on what you're doing.

It's common to see higher latencies on newer designs of memory. An older type is at the end of its development cycle, is not going to higher clock speeds and is well worked out so latency can be pushed harder. Newer technology is developing, not yet getting a high yield of top performing parts and is advancing clock speeds, so low latencies are expensive for a given clock speed, and general spec RAM shows higher latency.
Top 5 things that never get done:

1.

#5 benjaminavi1994

benjaminavi1994
  • Topic Starter

  • Members
  • 90 posts
  • OFFLINE
  •  
  • Local time:03:17 AM

Posted 03 May 2011 - 05:16 AM

Hi


My current is PC2-6400 Latency 6
as in Ram one is from Samsung other from Ramaxel Technologies 1 Gb each



i have a 32Bit Vista Home My problem is I not able to get same Latency Rams

GsKILL Has one but it seems as though they only sell a 2x1 Gb pack or 2x2 GB

If i do add 2 more Gigs won`t it be a waste as 32 bit O/S can`t optimize more than 3.2 Gigs?

#6 killerx525

killerx525

    Bleepin' Aussie


  • Members
  • 7,220 posts
  • OFFLINE
  •  
  • Gender:Male
  • Location:Melbourne, Australia
  • Local time:08:47 AM

Posted 03 May 2011 - 05:55 AM

Yes it would be a waste if you get 4GB of ram unless you change to 64bit windows.

>Michael 
System1: CPU- Intel Core i7-5820K @ 4.4GHz, CPU Cooler- Noctua NH-D14, RAM- G.Skill Ripjaws 16GB Kit(4Gx4) DDR3 2133MHz, SSD/HDD- Samsung 850 EVO 250GB/Western Digital Caviar Black 1TB/Seagate Barracuada 3TB, GPU- 2x EVGA GTX980 Superclocked @1360/MHz1900MHz, Motherboard- Asus X99 Deluxe, Case- Custom Mac G5, PSU- EVGA P2-1000W, Soundcard- Realtek High Definition Audio, OS- Windows 10 Pro 64-Bit
Games: APB: Reloaded, Hours played: 3100+  System2: Late 2011 Macbook Pro 15inch   OFw63FY.png


#7 benjaminavi1994

benjaminavi1994
  • Topic Starter

  • Members
  • 90 posts
  • OFFLINE
  •  
  • Local time:03:17 AM

Posted 03 May 2011 - 06:35 AM

Thanks :thumbsup:

#8 cryptodan

cryptodan

    Bleepin Madman


  • Members
  • 21,868 posts
  • OFFLINE
  •  
  • Gender:Male
  • Location:Catonsville, Md
  • Local time:09:47 PM

Posted 03 May 2011 - 06:38 AM

It is also recommended that you do not mix memory types or brands. If you want true performance try and get dual channel kits if available, and if you are unable to get that try and order from the same brand/manufacturer.

For example, if you have 2 sticks of Kingston ValuRAM at PC2-6400 and you see a sale for Corsair PC2-6400, it is advisable that you do not purchase then Corsair unless you are planning to replace your Kingston ValuRAM with Corsair. Then at that time, you should purchase 4 sticks for Dual Channel Support or in the case of DDR3 and Triple Channel purchase your RAM in triplicate. By this I mean if your board has 6 slots for RAM then all slots should be filled with the same type of RAM.

#9 benjaminavi1994

benjaminavi1994
  • Topic Starter

  • Members
  • 90 posts
  • OFFLINE
  •  
  • Local time:03:17 AM

Posted 03 May 2011 - 07:22 AM

Hi


The system came with 1 Gb memory I requested Hp they upgrade so,

One memory is from Samsung other from Ramaxel What should I do?


Request hp again?

#10 cryptodan

cryptodan

    Bleepin Madman


  • Members
  • 21,868 posts
  • OFFLINE
  •  
  • Gender:Male
  • Location:Catonsville, Md
  • Local time:09:47 PM

Posted 03 May 2011 - 08:22 AM

I would recommend heading to http://www.newegg.com if you are in the USA to get your RAM.

#11 benjaminavi1994

benjaminavi1994
  • Topic Starter

  • Members
  • 90 posts
  • OFFLINE
  •  
  • Local time:03:17 AM

Posted 03 May 2011 - 11:19 AM

Thanks I`m not in USA in India

#12 cryptodan

cryptodan

    Bleepin Madman


  • Members
  • 21,868 posts
  • OFFLINE
  •  
  • Gender:Male
  • Location:Catonsville, Md
  • Local time:09:47 PM

Posted 03 May 2011 - 01:48 PM

Then reach out to one of your local computer stores and see if they sell paired kits.




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users