DDR2-800 mhz CL4 or CL5 with Q6600 and Asus P5E

Kabrio · 11-28-2007, 11:28 AM

Hi

Can you suggest with what CL memory to go. I know that CL4 is a bit faster, but how much? Is it a big difference to CL5?
I'm asking this because I could get two 2GB sticks from apacer or 4 sticks by corsair (to get total 4GB of RAM). Here's the thing, if I put all for modules in, I'm pretty limited afterwards if I want to add more RAM. So in this case I would go with CL5, but still how does this affect the performance?

Thanks.

dai · 11-28-2007, 01:33 PM

if you are running 32bit it will not see 4g of ram 2g should be more than enough unless you are into highend graphics editing

Kabrio · 11-28-2007, 01:38 PM

Quote:

Originally Posted by dai

if you are running 32bit it will not see 4g of ram 2g should be more than enough unless you are into highend graphics editing

That's exactly what I do.

And I know about the 32bit OS RAM issue. Maybe in one year I'll upgrade to 64-bit thats why I'm thinking that it would be good to have some RAM slots empty. But I'm not sure, so the question remains ... cl4 or cl5?

Thanks.

**blackduck30** · 11-28-2007, 01:57 PM

Always lower for latency, so if you can get CL4 then go for that. If price is a barrier then go for the CL5 if it allows you to get 2X2G stick, there is always a chance you can lower the timing anyway ( well you can try ).
I run my corsair 5-5-5-15 @ 4-4-4-12 with no problems.
If you set a lower timing and the board will not post then just reset the cmos and leave it at stock speed.

**Kalim** · 11-28-2007, 02:19 PM

CAS4 alone won't improve any practical performance over CAS5 realistically. You'll need to lower at least one of the rest of the timings to get an improvement, and then it'll be better. tWTP, tRTP, tRP, tRFC and PL will get you biggiest perfromance gains. The lower, the better. ;)

11-28-2007, 11:28 AM	#1 (permalink)
Kabrio Registered User Join Date: Nov 2007 Posts: 10 OS: XP home SP2	DDR2-800 mhz CL4 or CL5 with Q6600 and Asus P5E Hi Can you suggest with what CL memory to go. I know that CL4 is a bit faster, but how much? Is it a big difference to CL5? I'm asking this because I could get two 2GB sticks from apacer or 4 sticks by corsair (to get total 4GB of RAM). Here's the thing, if I put all for modules in, I'm pretty limited afterwards if I want to add more RAM. So in this case I would go with CL5, but still how does this affect the performance? Thanks.

11-28-2007, 01:33 PM	#2 (permalink)
dai Manager, Hardware Forums Join Date: Jul 2004 Location: west australia Posts: 56,593 OS: win 7 32x 64x rtm	Re: DDR2-800 mhz CL4 or CL5 with Q6600 and Asus P5E if you are running 32bit it will not see 4g of ram 2g should be more than enough unless you are into highend graphics editing __________________

11-28-2007, 01:57 PM	#4 (permalink)
blackduck30 TSF Enthusiast Join Date: Sep 2004 Location: Wollongong/Australia Posts: 4,230 OS: XP pro SP3/Vista Ultimate My System	Re: DDR2-800 mhz CL4 or CL5 with Q6600 and Asus P5E Always lower for latency, so if you can get CL4 then go for that. If price is a barrier then go for the CL5 if it allows you to get 2X2G stick, there is always a chance you can lower the timing anyway ( well you can try ). I run my corsair 5-5-5-15 @ 4-4-4-12 with no problems. If you set a lower timing and the board will not post then just reset the cmos and leave it at stock speed. __________________ Blackduck30 Time is like money and milk, It's always running out Any Donations Help Keep TSF Free For All Last edited by blackduck30; 11-28-2007 at 02:05 PM.

11-28-2007, 02:19 PM	#5 (permalink)
Kalim Roaming To Help Join Date: Nov 2006 Posts: 5,642 OS: Many	Re: DDR2-800 mhz CL4 or CL5 with Q6600 and Asus P5E CAS4 alone won't improve any practical performance over CAS5 realistically. You'll need to lower at least one of the rest of the timings to get an improvement, and then it'll be better. tWTP, tRTP, tRP, tRFC and PL will get you biggiest perfromance gains. The lower, the better. ;)