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Windows 7: RAM underperforming - Shows 333mhz instead of 667mhz

04 Oct 2016   #1
karthikg

Windows 7 Ultimate x64
 
 
RAM underperforming - Shows 333mhz instead of 667mhz

I have an old laptop Acer 6930. There are 2 RAMs in it and both of them are 667Mhz.



When I checked in CPUZ , it shows like this






Is there anything wrong with it? Besides it shows as 333mhz in cpuz instead of 667mhz. Laptop became very slow after having these 2 RAMs.


My System SpecsSystem Spec
.
04 Oct 2016   #2
ignatzatsonic

Microsoft Community Contributor Award Recipient

Windows 7 Home Premium SP1, 64-bit
 
 

I don't think there is anything wrong.

DDR stands for double data rate; double 333 is about 667.
My System SpecsSystem Spec
04 Oct 2016   #3
karthikg

Windows 7 Ultimate x64
 
 

Quote   Quote: Originally Posted by ignatzatsonic View Post
I don't think there is anything wrong.

DDR stands for double data rate; double 333 is about 667.

My doubt is frequency marked on the Ram is 667 but in cpuz for each slot it shows only 334mhz
My System SpecsSystem Spec
.

04 Oct 2016   #4
ignatzatsonic

Microsoft Community Contributor Award Recipient

Windows 7 Home Premium SP1, 64-bit
 
 

That's right.

Data is transferred TWICE per clock signal, thereby doubling the data transmission rate---from 333 to 667.
My System SpecsSystem Spec
04 Oct 2016   #5
wasnotwas

W10 Pro x64, W7 Pro x64 in VMware
 
 

Some softwares actually spell this out eg AIDA64 shows here

Real Clock 800MHz (DDR), Effective Clock 1600MHz

RAM underperforming - Shows 333mhz instead of 667mhz-ram_speed.jpg


My System SpecsSystem Spec
04 Oct 2016   #6
RoasterMen

Windows 10 Pro 64-bit
 
 

And the sticks are not of the same brand as well.
My System SpecsSystem Spec
06 Oct 2016   #7
Itaregid

Windows 10 Professional 64-bit
 
 

I agree that all looks good. As others noted, because the RAM is DDR, it processes data on both sides of the "cycle" - the flip and the flop so the "effective" rate (333) is doubles. It is really slightly more than exactly 333.0MHz so 667MHz is right.

Don't worry about different brands. That used to be something to be concerned with years ago, but modern RAM manufacturing techniques ensure all RAM coming off the production lines meet published specifications to ensure compatibility. Also, today's memory controllers are much more capable today at forcing slightly dissimilar RAM to play well together.

If the different brands were a problem in your case, you would not even see 1 whole stick. But since clearly both sticks are fully recognized, you are definitely good to go!
My System SpecsSystem Spec
08 Oct 2016   #8
AddRAM

Windows 7 Pro x64 Windows 10 Pro x64
 
 

Quote   Quote: Originally Posted by RoasterMen View Post
And the sticks are not of the same brand as well.
Doesn`t matter, that`s just the sellers sticker, look closely at the black ram chips, they are manufactured by the same company.

And the speed is fine.
My System SpecsSystem Spec
08 Oct 2016   #9
Itaregid

Windows 10 Professional 64-bit
 
 

Quote:
look closely at the black ram chips, they are manufactured by the same company.
Good catch!
My System SpecsSystem Spec
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 RAM underperforming - Shows 333mhz instead of 667mhz




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