Choosing the right Ram

February 23, 2009 at 14:13:10
Specs: Windows XP
There is just so many, that I'm not sure which one is the best choice. The computer im going to make is going to be for gaming and for programs like photoshop and 3dmax (would you call that media usage?)

I am going to choose either or of two motherboards, so its either going o be:
533MHz DDR2
Dual Channel Supported
667MHz DDR2
800MHz DDR2


533MHz DDR2
Dual Channel Supported
667MHz DDR2
800MHz DDR2
1200MHz DDR2 (SLI-Ready)

Basicly the same, but im not sure what "1200MHz DDR2 (SLI-Ready)" is all about.

Thank you.

i can has torrents?

See More: Choosing the right Ram

Report •

February 23, 2009 at 15:01:59
Can't advise you about RAM without knowing which CPU & motherboard you have.

Report •

February 23, 2009 at 15:37:06
SLi memory has absolutely nothing to do with having an SLi video configuration or a board with an SLi chipset. SLI is a bad label that is slapped on some should really be called EPP (Enhanced Performance Profiles) memory. Hopefully this will explain:

All RAM has it's basic setup info programmed into a small chip on the memory module...this small chip is called an EEPROM. The basic setup info is called SPD (Serial Presence Detect). If you do not manually configure the memory settings in the BIOS, the motherboard will read the SPD info from the EEPROM & automatically use that info to configure the memory settings.

EPP memory has high performance memory settings programmed into the same EEPROM. If you install EPP memory in a board that supports EPP & you have EPP enabled in the BIOS, the motherboard will use the high performance EPP memory settings rather than the basic SPD settings. If your motherboard doesn't support EPP, it will configure the memory using the SPD info, but you can always override the SPD & manually configure the BIOS/memory settings.

Report •

February 23, 2009 at 16:33:12
Well, you've already seen the two motherboards I was going to get in my other post.

XFX nForce 780i 3-Way SLI Motherboard

EVGA nforce 780i SLI Motherboard

however if you convince me to get another then i wont be getting those anymore :P.

The cpu i was going to get is a

I don't think that's the exact one, because it was a 3.00GHZ, but that's generally it. I am at school right now, but when i get home in few hours, ill post the correct one.

If you want to critique on the CPU, go ahead. Just keep in mind I am going to get a dual core CPU no matter what.

Report •

Related Solutions

February 23, 2009 at 16:59:13
I wouldn't try to dissuade you from getting a dual core CPU, but I will once again suggest that you shop elsewhere.

Report •

February 23, 2009 at 20:37:08

this is the CPU I'm planning on getting.
and i will once again say that I'm planning too.

With the information I've given in all my posts, what would be the best type and brand of RAM to get? As for size, I think I'm going to get 4GB.

Report •

February 24, 2009 at 14:47:47
"this is the CPU I'm planning on getting"

Uh, would the following CPU be the same one? $15 cheaper, free shipping & no tax? Yet you insist on shopping TigerDirect? Hmmmm.

"what would be the best type and brand of RAM to get?"

If you have no intentions to overclock, all you really need is DDR2-667, but I suggest's usually cheaper, plus it gives you a little headroom just in case you do decide to overclock.

Hey, look...4GB (2 x 2GB) of Corsair DDR2-800 for just $25 after rebate with free shipping & no tax!

Report •

February 24, 2009 at 17:03:21
ah, cool, thanks.

I was planning on overclocking my CPU and GPU(s), but I don't think overclocking the ram is necc, hell, i didn't even know it could be done before this.

Report •

February 24, 2009 at 18:10:27
"I don't think overclocking the ram is necc"

Then you don't know much about overclocking.

Report •

February 24, 2009 at 18:27:19
I researched overclocking concerning the GPU and CPU, but why would that matter? Let me worry about that. If I ever need help, I'll make a topic. This topic concerns RAM, not my intelligence.

One question, why would 800 be cheaper than 667? I would think something faster would be more $.

Report •

February 25, 2009 at 06:37:04
The questions you're asking show that you don't know how to properly configure an Intel system, let alone overclock one. These topics have been written about ad naseum in these forums (& others), but I'll give you a brief explanation.

On all Intel systems (other than the P4), the optimal setup for best performance is to run the CPU & RAM at the same other words, 1:1 ratio. To accomplish that, you need a basic understanding of FSB & RAM ratings.

Intel's FSB is "quad-pumped"...DDR RAM is "double-pumped". These quad/double pumped numbers are theoretical...they are NOT the true speed (aka frequency). To determine the frequency, you need to divide by either 4 (for the CPU FSB) or 2 (for the RAM). For instance, an Intel 1333MHz FSB CPU runs at 333MHz frequency (1333 / 4). DDR2-667 also runs at 333MHz frequency (667 / 2). So running DDR2-667 with a 1333MHz FSB CPU is the ideal pairing for best performance.

If you run a 1333MHz FSB CPU (333MHz freq) with DDR-800 RAM (400MHz freq), the CPU & RAM are out of sync. What that means is the motherboard chipset has to compensate for the difference in frequencies & that introduces "wait-states" into the equation. These wait-states cause a decrease in performance. So to eliminate the wait-states, all you have to do is underclock the DDR2-800 RAM from 400MHz to 333MHz & you'll have the optimal 1:1 ratio again. If you want to take full advantage of the DDR2-800 RAM, overclock the system by increasing the CPU FSB from 1333MHz (333MHz freq) to 1600MHz (400MHz freq) & reclock the DDR2-800 back to to it's default speed (400MHz freq) to match the CPU.

AMD A64 systems are totally different. They don't use a FSB so none of the above applies. It also doesn't apply to P4 systems. The P4's architecture was very inefficient so to make up for the inefficiency, it's recommended to run the RAM freq faster than the CPU freq...usually 3:4 or 4:5 ratio, depending on the CPU.

As for why DDR2-800 is generally cheaper than DDR2-667, I can only guess. Since DDR2-800 is the general standard for *most* motherboards these & demand?

Report •

February 25, 2009 at 10:01:25
Ok, that helped a lot. By P4's, does that include P45 motherboards? I was planning on getting a P45 motherboard because of peoples recommendations, I just want to confirm that P4=P45. Thanks for taking the time to give a detailed explanation.

What is the ratio if I am getting an Intel Core 2 Duo(E8400) CPU with a P45 motherboard?

at 3:4 ratio= 1333MHZ/888MHz, 4:5= 1420MHz/888MHZ? There is different combination's with overclocking(and underclocking) to reach the same ratio, whats the best one?

Report •

February 25, 2009 at 12:15:23
"I just want to confirm that P4=P45"

No, P4 = Pentium 4.

Report •

February 25, 2009 at 14:24:48
ah, ok, cool. I think ill get the 800 and overclock the cpu FSB to 1600MHZ. I understand it a lot better now, thanks again.

Report •

Ask Question