Would I notice a difference between these?

Magic_x_uk

Magic_x_uk

Magic_x_uk

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Hi,

Looking at these 2 types of memory to upgrade my Laptop from 3GB to 8GB.

Would I notice any difference between either of these. I know the vengeance runs at 1600MHz compared to the other at 1333MHz.

Just wondered for the sake of £4 is it worth it. I do not know anything really about memory, so any advice would be great.


Thank you


Corsair 8GB (2x4GB) DDR3 PC3-1066C9 1333MHz

http://www.overclockers.co.uk/showproduct.php?prodid=MY-324-CS&groupid=701&catid=8&subcat=1264

or

Corsair Vengeance SODIMM 8GB (2x4GB) DDR3 PC3-12800C9 1600MHz

http://www.overclockers.co.uk/showproduct.php?prodid=MY-344-CS&groupid=701&catid=8&subcat=1264

Thanks.
 
Subliminal Aura said:
EDIT on second thoughts I had better have my morning coffee :D
Click to expand...

Subliminal Aura: You sober:rolleyes:, both are SODIMM 204 pins, explain please, I'm still half a sleep, have I missed something.:confused:


Magic_x_uk: I have a Acer lappy which I also wish to increase from 3gb to 8gb memory & have wondered the same question.
 
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Nightglow said:
Both are SODIMM 204 pins, explain please, I'm still half a sleep, have I missed something.:o
Click to expand...

You're more awake than me it seems as I missed that one :D (Are you offering to make me a coffee ? :))

OP You'll be fine just check if your laptop can take the faster RAM. The only reason I would choose the faster RAM is if you intend to upgrade the CPU and again 'IF' the laptop can accept processors at the faster bus.

Other than that.... no big deal
 
Got some rather nice homemade coffee cake I'm scoffing:), too hard to upgrade cpu in lappy.

In my Acer spec they say nothing about whether faster memory is ok.

There are no options in the rather basic Acer BIOS to change any memory settings, so that is why I'm dubious about using DDR3 PC3-12800C9 1600MHz memory.

It's only a 267mhz increase in speed, so I think everything would be ok.
 
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Well if it's any help I almost always buy RAM faster than the stock spec as it'll be throttled down if the laptop can't hit the faster bus - another benefit is that the module can always be used later on in a machine that can take it
 
No idea 'if' the laptop can take faster RAM, not many options withing the BIOS on this packard bell laptop.

CPU is a AMD V120 at 2.20GHz

Just curious on which memory to get that is all.
 
Just get whatever's cheaper. You won't ntoice any difference between the two in real life performance anyway. And the laptop would probably set it to 1333mhz since the BIOS is locked.
 
The faster RAM is out of stock...
As a side note I hadn't realised laptop memory had got so cheap, probably don't need to worry so much about it when recommending laptops to people (normally I dismiss anything under 4GB)
 
Subliminal Aura said:
why?

Please don't start the you need a 64bit OS to address more than 4gig of RAM debacle because you don't.
Click to expand...

I thought Microsoft had limited 32 bit operating systems so as to prevent the addressing of physical memory above 4 GB.

How would you go about addressing more than 4GB without modifying the Windows kernel which can result in unexpected hardware issues and expose your system to malicious exploits?
 
All 32bit versions of Windows operating systems except for specific versions of Windows 2000 server cannot address more than 4GB of RAM. In practice this translates to around 3.25GB. Whilst there is no technical restriction that causes this, Microsoft have simply decided that 32 bit versions cannot use any more.
 
Surveyor said:
I thought Microsoft had limited 32 bit operating systems so as to prevent the addressing of physical memory above 4 GB.

How would you go about addressing more than 4GB without modifying the Windows kernel which can result in unexpected hardware issues and expose your system to malicious exploits?
Click to expand...

What ? and Huh ?

Where did you read that or did you just make it up ? I'm not a windows power user and even I know this ....

http://msdn.microsoft.com/en-us/library/aa366796(VS.85).aspx
 
Subliminal Aura said:
What ? and Huh ?

Where did you read that or did you just make it up ? I'm not a windows power user and even I know this ....

http://msdn.microsoft.com/en-us/library/aa366796(VS.85).aspx
Click to expand...

I'm not a Windows power user but even I know that what you've posted about PAE makes no difference to the amount of RAM that 32 bit client versions of Windows can use.

All 32 bit client versions of Windows have a 4GB address space.

The PAE switch does not make any more memory available for client versions of 32 bit Windows.

Even with PAE enabled the maximum addressable space on 32 bit client versions of Windows is 4GB and the usable RAM ~3.2GB.

Those are Microsoft imposed limits even if PAE mode is enabled.
 
It is mathematically impossible for a 32 bit OS to access more than 4GB of memory at the same time. Even if an OS could access more (which I guess must be what this PAE thing is without reading into it), it couldn't use it all at the same time, so it would likely result in a BSOD and corrupted data as threads would likely get confused (if you have ever programmed using threads as I have, you would know what i mean...)

WARNING Maths ahead!

2^32 = 4294967296 bytes (32 bit OS)
4 294 967 296 bytes = 4 gigabytes

2^64 = 18446744073709551616 bytes (64 bit OS)
18 446 744 073 709 551 616 bytes = 17 179 869 184 gigabytes
18 446 744 073 709 551 616 bytes = 16 384 petabytes

EDIT: This is also why 32-bit operating systems (natively) would have issues with >2TB HDs (most motherboards have software solutions for this)

4,294,967,296 sectors * 512 bytes per sector = 2,199,023,255,552 bytes
2,199,023,255,552 bytes / 1,024 bytes per kilobyte= 2,147,483,648 kilobytes
2,147,483,648 / 1,024 kilobytes per megabyte = 2,097,152 megabytes
2,097,152 / 1,024 megabytes per gigabyte = 2,048 gigabytes
2,048 / 1,024 gigabytes per terabyte = 2 terabytes
 
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#19

4 GB is per 32bit process. The same limitation applies to 32bit processes under a 64bit OS. 32bit with PAE can assign much more physical ram to running processes, just like the 64bit OS can. So in that regard, yes a 32bit OS can use more than 4GB at the same time, just like the 64bit OS can.

The issue with >2 TiB harddrives is not about 32bit OSes.
 
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