Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.


Windows 7: Choosing RAM

13 May 2011   #11
seekermeister

W7x64 Pro, SuSe 12.1/** W7 x64 Pro, XP MCE
 
 

Something else that I don't understand is CAS values. At one time, I understood that the lower the CAS, the better, but with these new DDR3 RAMS, it seems that the higher the number the better...is this true?


My System SpecsSystem Spec
.
13 May 2011   #12
Glhs958

Windows 7 Ultimate 64bit
 
 

My System SpecsSystem Spec
13 May 2011   #13
Fumz

7 Ultimate x64
 
 

I don't have first hand knowledge of that board, but I do recall a few threads around here about AMD memory issues. I can't recall what it is specifically the AM2/3's can't do (might be something about cas), but if you're going to get that board and buy off the qvl, you'd be well advised to find out. I'll dig around and see if I can find the threads I'm talking about.

Having said that, they market the Patriot kit as being designed for the P55. That's probably meaningless, but again, I don't know AMD chipsets and so that may be something worth looking into. However short the qvl is, there must be some inexpensive kits on there?

One of my quirks is never skimping on RAM or the PSU, so, lol, maybe I'm not the best person to assist?
My System SpecsSystem Spec
.

13 May 2011   #14
Fumz

7 Ultimate x64
 
 

Quote   Quote: Originally Posted by seekermeister View Post
Something else that I don't understand is CAS values. At one time, I understood that the lower the CAS, the better, but with these new DDR3 RAMS, it seems that the higher the number the better...is this true?
No. Timing rules still apply. Lower is tighter and tighter is still better. DDR3 is only different than DDR2 or DDR in speed, timings, and voltage... otherwise they're essentially the same.
My System SpecsSystem Spec
13 May 2011   #15
Fumz

7 Ultimate x64
 
 

Quote   Quote: Originally Posted by Glhs958 View Post
Boom... there you go. Good link.
My System SpecsSystem Spec
13 May 2011   #16
ickymay

win7 ultimate / virtual box
 
 

Quote   Quote: Originally Posted by seekermeister View Post
Something else that I don't understand is CAS values. At one time, I understood that the lower the CAS, the better, but with these new DDR3 RAMS, it seems that the higher the number the better...is this true?
no , with the advent of higher buss speeds the stable latency has generally gone up a bit with DDR3 :/

CAS latency will always mean "how many clock cycles the memory module will delay in returning a data requested by the CPU"
My System SpecsSystem Spec
13 May 2011   #17
seekermeister

W7x64 Pro, SuSe 12.1/** W7 x64 Pro, XP MCE
 
 

Fumz,

That would be a good link, except that it is to Newegg, which I do not do business with. However, I did find that RAM on Amazon, which I occasionally do business with, if I can't find anyone else. This may be one of those occasions, but I shall keep shopping some before deciding. Thanks for the link.
My System SpecsSystem Spec
13 May 2011   #18
seekermeister

W7x64 Pro, SuSe 12.1/** W7 x64 Pro, XP MCE
 
 

Quote   Quote: Originally Posted by ickymay View Post
Quote   Quote: Originally Posted by seekermeister View Post
Something else that I don't understand is CAS values. At one time, I understood that the lower the CAS, the better, but with these new DDR3 RAMS, it seems that the higher the number the better...is this true?
no , with the advent of higher buss speeds the stable latency has generally gone up a bit with DDR3 :/

CAS latency will always mean "how many clock cycles the memory module will delay in returning a data requested by the CPU"
Okay, but to put that into perspective, with two qualified RAMS, the one with the lower CAS would be the better performing...right?
My System SpecsSystem Spec
13 May 2011   #19
Fumz

7 Ultimate x64
 
 

Quote   Quote: Originally Posted by seekermeister View Post
Quote   Quote: Originally Posted by ickymay View Post
Quote   Quote: Originally Posted by seekermeister View Post
Something else that I don't understand is CAS values. At one time, I understood that the lower the CAS, the better, but with these new DDR3 RAMS, it seems that the higher the number the better...is this true?
no , with the advent of higher buss speeds the stable latency has generally gone up a bit with DDR3 :/

CAS latency will always mean "how many clock cycles the memory module will delay in returning a data requested by the CPU"
Okay, but to put that into perspective, with two qualified RAMS, the one with the lower CAS would be the better performing...right?
Yes. The lower the timings, the better the machine will perform.
Here's an AM3 memory link you might want to read before buying. They suggest the best kit for AM3 is cas 6 1333.
AMD AM3 Memory Performance Guide - Introduction
My System SpecsSystem Spec
13 May 2011   #20
Glhs958

Windows 7 Ultimate 64bit
 
 

Just a question but why not newegg? I bet I have done $alot the last year threw them with only 2 or 3 doa's and rma was painless.
Yes the lower the cas is the better chip.
My System SpecsSystem Spec
Reply

 Choosing RAM




Thread Tools




Similar help and support threads
Thread Forum
Need help choosing a GPU
Hi... need help getting a Nvidia videocard, now if you can tell me whats the best cheapest GPU out there that can run any game till now at max and yes i do have a limited budget lets say around 400$ thanks.
Graphic Cards
Help choosing a TV
Hi, i want to know if someone can help me choose a TV, i want one 32" in a good brand like samsung, toshiba etc that can play movies directly from an external hard drive, if possible under 400$, i live in canada if this can help
Chillout Room
Choosing the right psu
How much w would i need for this system: -i5 2400 3.1GHz -Gigabyte GeForce GTX 560 1GB GDDR5 -Asrock Z68 Pro3 -WD Caviar Blue 500gb 7200rpm -Sony Optiarc 24x dvd r/w -Corsair Vengeance 8GB DDR3 1600MHz
Hardware & Devices
am i choosing right for my rig?
I am a gamer! and egar to work in game designing! i am going to rebuild my rig with this system! MOTHERBOARD :Model - Gigabyte GA-MA78LMT-S2 Form Factor - Micro ATX Sockets - AM3 Supported CPU - Phenom II / Athlon II / Sempron 100 Series
Gaming
New help in choosing which OS to buy.
Hi, I am having a bit of a conflict at the moment. The thing is, I have 4 Pc´s which I wanna upgrade. I am an yurop resident which I believe complicates things. And I need some advice in choosing the correct OSés. 1. HP Laptop which has Vista 32-bit home premium. I wanna upgrade to Windows 7...
General Discussion
Choosing PSU
I'm building a new system and just need to know if this Corsair VX550W will be enough or if I should get this Thermaltake 600W Litepower Components: ThermalTake Soprano DX Midi-Tower Case - Aluminium Front Panel (VE7000BWS) | Techbuy Australia Intel Core i7 860 Quad Core (2.80GHz - 3.46GHz...
Hardware & Devices


Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

© Designer Media Ltd

All times are GMT -5. The time now is 13:49.
Twitter Facebook Google+ Seven Forums iOS App Seven Forums Android App