Tom's Hardware > Forum > Motherboards & Memory > General Motherboard > If your RAM speed doesnt match your Mobo speed, can that cause problem

If your RAM speed doesnt match your Mobo speed, can that cause problem

Forum Motherboards & Memory : General Motherboard - If your RAM speed doesnt match your Mobo speed, can that cause problem

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evo8306   04-21-2009 at 01:05:58 AM

So I've been having problems with my new rig, a ton of different fixes I've tried and none have worked. I've come to the conclusion that the problem lies in either the GPU, the CPU, or the memory. The problem is that every game i run, (anything from Crysis to Unreal 2) runs at about 15 frames. Not being able to play a game is one thing but not being able to play all games at a stable frame rate no matter the age or ease of the requirements is another problem.

I just realized that the speed of the of my memory is DDR3 1066. However the memory standard of my Mobo is DDR3 1600/1333.

Could this be my problem. Does the difference in the speed make that much of a difference.

If not and you have an idea of what the problem could be I'm open to solutions...as long as it doesnt involve trying another card or processor for I don't have another to test.

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theAnimal   04-21-2009 at 07:47:40 AM
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What are the rest of your specs?

------------------------------ *How To Ask For New Build Advice*
HAF 922 | HX750
Rampage2Gene | i7 920 D0 | 6GB Gold 1600 | Hyper 212+
Caviar Black 640GB | HD3870
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evo8306   04-22-2009 at 03:37:14 AM
- 0 +

EVGA x58 mobo
EVGA 295 gpu
Thermaltake 1000 Watt psu
Intel i7 920 cpu
Samsung 1TB HDD
Kingston 1GBx4 RAM
Windows Vista Ultimate 64 bit

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jsrudd   04-22-2009 at 04:41:20 AM
- 0 +

Your RAM might not be the problem, but you should use DDR3 2GBx3. At any rate try over clocking the ram in the BIOS and see if that matters. But really your DDR2 RAM is definitely not on par with the rest of your high-end system.

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theAnimal   04-22-2009 at 06:02:49 AM
- 0 +

The default speed for i7 is 1066, so you'll be fine unless you're planning to OC.

------------------------------ *How To Ask For New Build Advice*
HAF 922 | HX750
Rampage2Gene | i7 920 D0 | 6GB Gold 1600 | Hyper 212+
Caviar Black 640GB | HD3870
 Reply to theAnimal
geofelt   04-22-2009 at 06:42:11 AM
- 0 +

Something is seriously wrong, given your parts.

4gb seems substandard for your parts. Most i7 systems will have 6gb .
As a theory, the GTX295 has 1.8gb of ram which must be represented in your system somewhere. That is a large part of 4gb.
It might be useful to try a traditional 6gb kit.

Is your vga driver current? Is there possibly a beta version that addresses your problem?
It is like your GTX295 is stuck in 2D mode.

Message quoted 1 times
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evo8306   04-22-2009 at 06:46:28 AM
- 0 +

Yea i plan on upgrading the RAM to 2GBx6. I need a new monitor as well. SO what do you think the problem could be? Every game runs really slow.

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evo8306   04-22-2009 at 06:48:29 AM
- 0 +

I've tried the beta drivers that testers used before the card was out, I've tried all three drivers, I believe that's how many they have, that they have released since the card released and it all runs the same.

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geofelt   04-22-2009 at 07:06:29 AM
- 0 +

Some ideas:

Is your cpu running at the proper speed? Use cpu-z to see what clock rate you are actually running at.
If it is suspicious, check that your power profile(in vista control panel) is set to high performance, and that you maximum cpu usage is 100%

Run memtest86+ to verify that all of your ram is ok.

Run prime95 to exercise the cpu until you reach maximum temperatures. Has the cpu throttled itself? cpu-z should show that.

Try the EVGA forums for any GTX295 issues.

Are there any mobo bios updates that might address the problem?

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theAnimal   04-22-2009 at 07:20:46 PM
- 0 +

geofelt wrote :

4gb seems substandard for your parts. Most i7 systems will have 6gb .


i7 works fine with 4GB.

Quote :

As a theory, the GTX295 has 1.8gb of ram which must be represented in your system somewhere. That is a large part of 4gb.


The memory in the GTX is 2x 896MB, and will be mapped as 896MB. This of course only matters with a 32bit OS.

Message quoted 1 times
------------------------------ *How To Ask For New Build Advice*
HAF 922 | HX750
Rampage2Gene | i7 920 D0 | 6GB Gold 1600 | Hyper 212+
Caviar Black 640GB | HD3870
 Reply to theAnimal
mikrev007   04-22-2009 at 07:27:43 PM
- 0 +

theAnimal wrote :

The memory in the GTX is 2x 896MB, and will be mapped as 896MB. This of course only matters with a 32bit OS.



That is not how it gets mapped. A small portion (usually 256MB) from each core is mapped.

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