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Why do G.SKILL DDR-1000 MHz show as only 800 MHz?

post #1 of 12
Thread Starter 
I have 4 sticks of 2GB G.SKILL F2-8000CL5D-4GBPQ DDR-1000 PC2-8000

The ram is sold as 1000 MHz but show as only 800 MHz in the bios? Is this normal?

Thanks!

John V.
    
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post #2 of 12
The ram will default to 800 speeds, which is probably the memory standard your motherboard uses. You have to manually set it to 1000 in your bios.
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post #3 of 12
it might ship as 800mhz, i think they might just be guarnteed to work @ 1000mhz. change in teh bios
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post #4 of 12
It depends what FSB and ratio your running. Set them to 1000MHz manually if thats what speed you want them to run
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post #5 of 12
Quote:
Originally Posted by lonnie5000 View Post
The ram will default to 800 speeds, which is probably the memory standard your motherboard uses. You have to manually set it to 1000 in your bios.
My thoughts exactly.
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post #6 of 12
800 will be the speed that the motherboard will clock it to by default. you just need to set it back to the manufactuer defaults manually through the BIOS
    
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post #7 of 12
Quite often, memory that is "rated" by the distributor at over 800MHz (DDR) still only meets the JEDEC standard for 400MHz (800MHz DDR).

However - memory sold at, say, 1,000MHz DDR sometimes has an EPP "registration" of the said frequency. So even if the motherboard's BIOS doesn't detect and set the memory to the distributor's rating (and instead sets it to the manufacturer's JEDEC rating), an EPP rating can state timings/subtimings and voltages required for the memory to run at the given frequency. You can usually view the JEDEC and EPP settings by using the program CPU-Z and viewing the "Memory" or "SPD" information tab.

Even if the memory doesn't have JEDEC or EPP registrations at the distributors stated frequency, it is still supposed to run at the advertised frequency (and/or timings and voltage). It is sometimes just a matter of changing them to actually run at those settings in the BIOS.
Edited by Choggs396 - 5/28/08 at 7:49am
    
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post #8 of 12
Thread Starter 
Thanks Everyone for the excellent info!

This is my first build...using GIGABYTE GA-EX38-DS4 mobo with Q6700
and 8 GB G.Skill Ram.

I'll update my sig shortly!

Thanks,

John V
    
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Q6700 @ 3.33GHz 1.2875V GIGABYTE GA-EX38-DS4 EVGA 8800GT 512 MB 8 GB G.Skill Ram 1000 
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Hard DriveOptical DriveOSMonitor
Many - All SATA LITEON LH-20A1L-06 20X SATA Vista Home Premium 64 Dell 19/23 inch 
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post #9 of 12
Quote:
Originally Posted by JohnnyV View Post
Thanks Everyone for the excellent info!

This is my first build...using GIGABYTE GA-EX38-DS4 mobo with Q6700
and 8 GB G.Skill Ram.

I'll update my sig shortly!

Thanks,

John V
Are you aware of the SP1 update? You must pull 3 of 4 ram when loading Vista, then do the SP1,then install rest of ram.
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post #10 of 12
Quote:
Originally Posted by Mad Bomber View Post
Are you aware of the SP1 update? You must pull 3 of 4 ram when loading Vista, then do the SP1,then install rest of ram.
Doesn't apply in all cases. For most folks, it works fine with 4GB or 8GB. Yes, there are others who get BSOD's, but it's a minority (albeit a LARGE minority).
    
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