need advice if using DDR2 800 correctly

keyonman

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Jun 14, 2007
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Hi fellas,

I have not built a computer since 2000 and just got a new one now built again and running. I am not very familiar with the FSB/DDR2Memory so here are details:
Motherboard : DFI Infinity P165
Intel C2D E4300
Crucial Ballistix 4gb ddr2 PC2-6400 800Mhz 4-4-4-12

On the BIOS, I overclock the CPU to 3.1 by raising the cpu clock to 345.

Here is where I get confused: There is a current DRAM Speed and DRAM Speed on the bios. I got my DRAM Speed set to 533 and my cas mem setting to 4-4-4-12. I think it is 1-1 (??? whatever that means). Am I using my memory to it's full potential? I am not sure since I show 533 on my DRAM Speed and my memory is capable of 800Mhz and can even reach 1000 I think. Also the current DRAM Speed shows a different number which I think is tied to my CPU speed. Please help and enlighten me. I need your advice if the setting can be better. Thanks :lol:
 
Hi fellas,

I have not built a computer since 2000 and just got a new one now built again and running. I am not very familiar with the FSB/DDR2Memory so here are details:
Motherboard : DFI Infinity P165
Intel C2D E4300
Crucial Ballistix 4gb ddr2 PC2-6400 800Mhz 4-4-4-12

On the BIOS, I overclock the CPU to 3.1 by raising the cpu clock to 345.

Here is where I get confused: There is a current DRAM Speed and DRAM Speed on the bios. I got my DRAM Speed set to 533 and my cas mem setting to 4-4-4-12. I think it is 1-1 (??? whatever that means). Am I using my memory to it's full potential? I am not sure since I show 533 on my DRAM Speed and my memory is capable of 800Mhz and can even reach 1000 I think. Also the current DRAM Speed shows a different number which I think is tied to my CPU speed. Please help and enlighten me. I need your advice if the setting can be better. Thanks :lol:

Download and install CPUZ. Open the 'memory' tab once installed. Check the speed, ratio and timings there.

http://www.cpuid.com/cpuz.php
 

keyonman

Distinguished
Jun 14, 2007
6
0
18,510
Hi fellas,

I have not built a computer since 2000 and just got a new one now built again and running. I am not very familiar with the FSB/DDR2Memory so here are details:
Motherboard : DFI Infinity P165
Intel C2D E4300
Crucial Ballistix 4gb ddr2 PC2-6400 800Mhz 4-4-4-12

On the BIOS, I overclock the CPU to 3.1 by raising the cpu clock to 345.

Here is where I get confused: There is a current DRAM Speed and DRAM Speed on the bios. I got my DRAM Speed set to 533 and my cas mem setting to 4-4-4-12. I think it is 1-1 (??? whatever that means). Am I using my memory to it's full potential? I am not sure since I show 533 on my DRAM Speed and my memory is capable of 800Mhz and can even reach 1000 I think. Also the current DRAM Speed shows a different number which I think is tied to my CPU speed. Please help and enlighten me. I need your advice if the setting can be better. Thanks :lol:

Download and install CPUZ. Open the 'memory' tab once installed. Check the speed, ratio and timings there.

http://www.cpuid.com/cpuz.php

I actually have it installed and it shows 1:1 at 4-4-4-12 on memory. I am just confused on using the 533 DRAM Speed setting on the BIOS instead of the 800. Any explanation on that? BTW, if I set this to 800, my current DRAM Speed section will show over 1000...
 
Hi fellas,

I have not built a computer since 2000 and just got a new one now built again and running. I am not very familiar with the FSB/DDR2Memory so here are details:
Motherboard : DFI Infinity P165
Intel C2D E4300
Crucial Ballistix 4gb ddr2 PC2-6400 800Mhz 4-4-4-12

On the BIOS, I overclock the CPU to 3.1 by raising the cpu clock to 345.

Here is where I get confused: There is a current DRAM Speed and DRAM Speed on the bios. I got my DRAM Speed set to 533 and my cas mem setting to 4-4-4-12. I think it is 1-1 (??? whatever that means). Am I using my memory to it's full potential? I am not sure since I show 533 on my DRAM Speed and my memory is capable of 800Mhz and can even reach 1000 I think. Also the current DRAM Speed shows a different number which I think is tied to my CPU speed. Please help and enlighten me. I need your advice if the setting can be better. Thanks :lol:

Download and install CPUZ. Open the 'memory' tab once installed. Check the speed, ratio and timings there.

http://www.cpuid.com/cpuz.php

I actually have it installed and it shows 1:1 at 4-4-4-12 on memory. I am just confused on using the 533 DRAM Speed setting on the BIOS instead of the 800. Any explanation on that? BTW, if I set this to 800, my current DRAM Speed section will show over 1000...

PC4200 = 533 mhz. (speed)= 4.2 GB/sec. transfer rate.

PC6400 = 800 mhz. (speed) = 6.4 GB/second transfer speed.
 

shadowmaster625

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Mar 27, 2007
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Dontcha love these goofball answers that dont really even answer your question. The reason it reads 1000 when you set it to 800 is because you are overclocking the front side bus. That's what you set to 345, which gives you your 3.1GHz. (345/200*1.8GHz = 3.1GHz) If my calculations are correct then your RAM should be at 919 (345/200 * 533 = 919), which is a slight overclock for 800MHz RAM. That's just about optimal. You got good speed on your CPU and moderate memory, you wont get much better than this. So yeah 533 is the way to go. If you were to set it to 800, you'd be clocking the [censored] out of your RAM.

If you clock the FSB down to 300 your RAM should run at the speed it is designed for, and your CPU will be running at 2.7GHz.
 
Dontcha love these goofball answers that dont really even answer your question. The reason it reads 1000 when you set it to 800 is because you are overclocking the front side bus. That's what you set to 345, which gives you your 3.1GHz. (345/200*1.8GHz = 3.1GHz) If my calculations are correct then your RAM should be at 919 (345/200 * 533 = 919), which is a slight overclock for 800MHz RAM. That's just about optimal. You got good speed on your CPU and moderate memory, you wont get much better than this. So yeah 533 is the way to go. If you were to set it to 800, you'd be clocking the [censored] out of your RAM.

If you clock the FSB down to 300 your RAM should run at the speed it is designed for, and your CPU will be running at 2.7GHz.

Dontcha love these goofball answers that dont really even answer your question. The reason it reads 1000 when you set it to 800 is because you are overclocking the front side bus.

Duh? Of course overclocking the FSB increases the entire system bus including the RAM which is part of the bus. Your goofballish answer does not explain anything. OP is asking what is 533 mhz. and 1000 mhz and which is better.

The reason it reads 1000 when you set it to 800 is because you are overclocking the front side bus.

Well duh?

If my calculations are correct then your RAM should be at 919 (345/200 * 533 = 919), which is a slight overclock for 800MHz RAM. That's just about optimal. You got good speed on your CPU and moderate memory, you wont get much better than this. So yeah 533 is the way to go. If you were to set it to 800, you'd be clocking the [censored] out of your RAM.
And how did you learn all this? By calling members of the forum goofballs? My responses to OP are hardly deserving of your 'goofball' label your efingtard. Why don't you hang your self in your mother's closet. Ef you and get off the forum if you don't have the brains to post in a more responsible manner.
 

haywood

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Sep 5, 2006
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Settle down.

Anyhoo, if your FSB is set to 345 then it is quad pumped, x4, to effective 1380. In order to get your RAM 1:1 then the speed would need to be set at 690, as in 690x2= 1380. 690<800 so the RAM will be underclocked.

For more on this topic please see the stickies in the CPU forum.
 

keyonman

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Jun 14, 2007
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Settle down.

Anyhoo, if your FSB is set to 345 then it is quad pumped, x4, to effective 1380. In order to get your RAM 1:1 then the speed would need to be set at 690, as in 690x2= 1380. 690<800 so the RAM will be underclocked.

For more on this topic please see the stickies in the CPU forum.
]
If my memory is underclocked now, would it benefit me to change the DRAM Speed to 667 (Other options on the BIOS besides 533 are 667, 800 and Auto)? I guess if I go to 667, then I will overclock my memory but I will not be able to go 1:1. Right?
 
Settle down.

Anyhoo, if your FSB is set to 345 then it is quad pumped, x4, to effective 1380. In order to get your RAM 1:1 then the speed would need to be set at 690, as in 690x2= 1380. 690<800 so the RAM will be underclocked.

For more on this topic please see the stickies in the CPU forum.
]
If my memory is underclocked now, would it benefit me to change the DRAM Speed to 667 (Other options on the BIOS besides 533 are 667, 800 and Auto)? I guess if I go to 667, then I will overclock my memory but I will not be able to go 1:1. Right?

Well...

PC5300 = 667 mhz. = 5.3 GB per sec. transfer rate

From the beginning your are asking a very technical question. Should I underclock my RAM to meet 1:1 ratio with my FSB? You are going to get answers from both sides. The faster you clock your RAM, the faster the transfer rate of the RAM is. But then again, you have limitations to the rest of your system going there. In addition, your Core 2 Duo processor is not dependant on a 1:1 ratio. I would clock your RAM to at least the mfg. specs, 800mhz. Forget a 1:1 ratio. Watch the goofball start calculating again.