RAM Speeds 12 replies

  • 1
  • 2

Please wait...

DarkKrucifix7

Geek on the Internets

50 XP

26th February 2007

0 Uploads

568 Posts

0 Threads

#1 10 years ago

Hey all!

I was wondering something lately and since I currently don't know much about this subject, I figured I should ask here.

As seen in my sig, I have 4GB of RAM. This is set up as 2x2GB. You may also notice that its...underclocked, by default (motherboard doesn't accept the actual speed).

Now, I was wondering if it would be better to OC it to 1066 and have no dual channel ( this is because my motherboard will not support 2 1066 DIMMs per channel.)

[COLOR=Black]OR[/COLOR]

Keep it @ 800 and try modifying that Timings...which I am wary to do...since it shows...some 15-odd settings to change under timings in the BIOS.

Thoughts?




Mastershroom VIP Member

Frag Out!

153,685 XP

18th November 2004

0 Uploads

14,196 Posts

0 Threads

#2 10 years ago

I am actually curious about this as well. I know adjusting RAM timings can help or hinder CPU overclocking performance, but I've never had it explained clearly, and I don't really understand.




Kwould

OK, but wash it first

50 XP

24th November 2003

0 Uploads

1,537 Posts

0 Threads

#3 10 years ago

Actually, it is not your motherboard that is the problem. It is a limitation of the finicky AMD memory controller that causes the 1066 - 1 DIMM per channel issue. But before I can answer your question, what are your current memory timings?




*The.Doctor

Trust me, I'm a Doctor

102,440 XP

25th November 2003

0 Uploads

9,964 Posts

0 Threads

#4 10 years ago

I would keep it at 800Mhz and tweak the timings. Your DDR2-1000 is most likely just DDR2-800 thats been rated to pass overclocked at 1000Mhz, but not set to that speed out of the box. Your not going to really notice the difference from 800 to 1066 unless your looking at benchmark scores anyways.




*Daedalus

A Phoenix from the ashes

50 XP

18th April 2006

0 Uploads

3,091 Posts

0 Threads

#5 10 years ago

It depends on the processor and setup. No-one will be able to tell you with certainty that high speed, lose timings is better than low speed tight timings. Usually though, AMD processors prefer the latter, while Intel processors seem to benifit most from speed.

Also, as a general rule, you'll get more performance if your RAM is synced to your processor, i.e. running 1:1. So if your processor has an FSB of 1600MHz (400MHz), then you want your RAM running at 800MHz (400MHz) to be synced. Realistically, there are only four timings you really need to - and should - change. The others impact very little on performance, but have a lot to do with stability. The ones you should look at, are:

tCL, tRCD, tRP, tRAS, and possibly CMD.

The first four there you will usually see as 4-4-4-12, or 5-5-5-15, or something like that. The last one is always going to be either 1T or 2T. Leave that one alone unless you want the absolute, most bleeding-edge performance boost you can get and aren't worried about your memory frying.

Of those four, the first one is the hardest to move down, and keep your memory stable, but basically, just mess around with those four until you get your memory where you want it. Right now, my OCZ memory is at 800MHz, and 4-3-3-9-2T.




DarkKrucifix7

Geek on the Internets

50 XP

26th February 2007

0 Uploads

568 Posts

0 Threads

#6 10 years ago

Newegg.com - G.SKILL 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 1000 (PC2 8000) Dual Channel Kit Desktop Memory - Desktop Memory

The Timings are [COLOR=Black]5-5-5-15[/COLOR], seems pretty much the standard for this range, right?

In case you were wondering why I bought such an odd speed is because of price, I got a pretty good deal on them.




*Daedalus

A Phoenix from the ashes

50 XP

18th April 2006

0 Uploads

3,091 Posts

0 Threads

#7 10 years ago

Yeah, RAM of around 800MHz usually is 4-4-4-12-2T, and 1066MHz is 5-5-5-15-2T.




*The.Doctor

Trust me, I'm a Doctor

102,440 XP

25th November 2003

0 Uploads

9,964 Posts

0 Threads

#8 10 years ago

My OCZ Platinum 800Mhz is 5-5-5-15 stock IIRC. Its running at 5-5-4-14 though, anything lower and it fails Prime95 in seconds. I could probably get tighter timings but its running at 960Mhz (1:1 with FSB).

In case you were wondering why I bought such an odd speed is because of price, I got a pretty good deal on them.

Those odd speed ram kits are actually useful. If your going to be running at 800, if you buy those 1000Mhz kits like yours it gives you a little more headroom for overclocking than your average 800Mhz ram would give you.




DarkKrucifix7

Geek on the Internets

50 XP

26th February 2007

0 Uploads

568 Posts

0 Threads

#9 10 years ago
*The.Doctor;4793620Those odd speed ram kits are actually useful. If your going to be running at 800, if you buy those 1000Mhz kits like yours it gives you a little more headroom for overclocking than your average 800Mhz ram would give you.

True...I kinda thought of that as well.

So...I'm better off fiddling with the timings?




kow_ciller

Gettin' hardware chilly

50 XP

16th June 2004

0 Uploads

5,787 Posts

0 Threads

#10 10 years ago

I dont know what the big deal is about timings. You're not going to notice any difference from 4-4-4-12-1 to 5-5-5-15-2 unless you're looking at Super Pi scores, and theres no reason to get higher speed DDR II unless you're pushing the FSB to 500+ or want to run some crazy dividers on the ram. With that being said, see if you can push your ram to 1066 or whatever in your bios. That will give you more of a boost than lowering timings.




  • 1
  • 2