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Windows 7: Question about RAM timings


15 Aug 2010   #11

Windows 8.1 Pro w/Media Center 64bit, Windows 7 HP 64bit
 
 

Should work Ok as they do match. The confusion comes about with the freq setting. The new ram is advertised as 667mhz and your old ram shows freq of 333.4mhz. Looks like a mismatch but in reality they are the same. DDR means Double Data Rate which means the ram does double the work on each cycle. It runs at 333.4mhz but it performs like it was running at 667mhz and the chip makers like to use the faster number for marketing reasons. 667 just sounds better than 333.

Jim

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15 Aug 2010   #12

Windows 7 Ultimate x32
 
 

Alright thanks guys
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15 Aug 2010   #13

Windows 7 Pro X64 SP1
 
 

A suggestion:

If adding the new RAM doesn't work properly, try setting the RAM timings and voltages manually in the BIOS settings. That may permit the chips to play together.
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16 Aug 2010   #14

Windows 7 Ultimate x32
 
 

Quote   Quote: Originally Posted by bobkn View Post
A suggestion:

If adding the new RAM doesn't work properly, try setting the RAM timings and voltages manually in the BIOS settings. That may permit the chips to play together.
I've already checked to see if I can do that, but there is no option for it
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16 Aug 2010   #15

Windows 7 Pro X64 SP1
 
 

Quote   Quote: Originally Posted by saroy94 View Post
I've already checked to see if I can do that, but there is no option for it
I hoped that you were mistaken, but I don't find any information about BIOS settinsg at www.hp.com. Dratted appliance PCs!
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16 Aug 2010   #16

Windows 7 Ultimate x32
 
 

That's why I want a new MB, because mine is just useless I don't have the money though, as I've just got enough to buy a 4870 from ebay
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16 Aug 2010   #17

Win 7 pro 64, Soloris, Xp pro 32
 
 

It should work, but you may have to manually set the timings and voltage in the Bios.

Its always best to keep all ram identical, but even different speed, latency, and voltage ram can be used together, if defined properly in the bios.

But no matter what ,since you aren't running identical make/model ram, there is no guarantee.
And any advice given is just an educated guess...
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16 Aug 2010   #18

Windows 8.1 Pro
 
 

Quote   Quote: Originally Posted by Wishmaster View Post
I agree with Rich. Best not to mix and match.

TBH, you may be better of getting that 2GB set, and installing it. But do away with the 1 you have now.

The reason I say this, youll be in dual channel mode which is more effecient than single.

I think, if you add the 3rd, it may well drop back to a single channel.

You also won't be mixing and matching

ALL the RAM will default to the slowest settings of the bunch.
(there many more sub timings besides the 4 main ones)

But, if the main 4 timings match, and the voltage is the same, it should work. I just wouldn't advise it as the possiblity of problems are higher.
This is sound advice. Having 3gig of mismatched RAM installed WILL give worse performance than having 2gig of matched RAM.

And if you don't have access to the BIOS settings, you'd be well off with a matched pair of RAM sticks!!!

And as pointed out abouve, you also need to insure the voltages match.

Good luck.
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16 Aug 2010   #19

Windows 7 Ultimate x32
 
 

I've just ordered the kit so I probably am going to just install them two and kick the other one out xD it should work fine as soon as i replace it right?
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16 Aug 2010   #20

Windows 8.1 Pro
 
 

Well... if it's compatible with the motherboard, yes.

Good luck
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