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Windows 7: RAM Question - Data Bus Speeds/Memory Speed


29 Dec 2009   #1

Windows 7 Home Premium Edition, 64-bit
 
 
RAM Question - Data Bus Speeds/Memory Speed

was looking for some new RAM, as my computer's pretty slow. I found some for a good price, but had a question.

According to my specifications, by Data Bus Speed is 533 MHz, however my Memory Speed is 333 MHz. The RAM I'm looking at has a "speed" of 400 MHz.

First of all, what "speed" does this apply to? Data Bus Speed or Memory Speed? Second of all, does it matter? If my computer doesn't read it fast enough, is it incompatible, or just not as fast as it could be?

Thanks for your help!

My System SpecsSystem Spec
.

29 Dec 2009   #2

Windows 7 x86/x64, Server 2008r2, Web Server 2008
 
 

The 4600 is a sdram bored.
Do not get ddr, ddr2 or 3.
The speed of the ram is the speed at which the ram operates at.

To be honest your main bottleneck is the pc itself.
It falls under minimum requirements for windows 7, it will be slow and choppy at times.



Sorry I was inaccurate in my diagnosis.
Thank you Whest
My System SpecsSystem Spec
29 Dec 2009   #3

XP, Vista, W7 64bit Home Premium
 
 

Below are your memory specs - i would say you would probably be better off with modules all the same type and speed - you can find this on the sticks inside the case - your specs aint that bad i think 4gb of memory would work better - how often do you defrag your hard drives - i think default is weekly, so this shouldnt be too bad. Your hard drives could be a limitation also, but with 4gb of memory once all your programs are loaded into memory it will run reasonably well.

Memory
Architecture
Dual Channel DDR SDRAM
Memory connectors
Four
Memory capacities
128-, 256-, 512-MB or 1-GB
Minimum memory
128-MB DDR SDRAM
NOTE: Between 32 and 64 MB of system memory may be allocated to support graphics, depending on system memory size and other factors.
Maximum memory
4 GB
Memory type
PC2700 (333-MHz) or PC3200 (400-MHz) DDR SDRAM
(non-ECC)

Memory

Architecture
Dual Channel DDR SDRAM

Memory connectors
Four

Memory capacities
128-, 256-, 512-MB or 1-GB

Minimum memory
128-MB DDR SDRAM
NOTE: Between 32 and 64 MB of system memory may be allocated to support graphics, depending on system memory size and other factors.

Maximum memory
4 GB

Memory type
PC2700 (333-MHz) or PC3200 (400-MHz) DDR SDRAM
(non-ECC)

http://support.ap.dell.com/support/e...i/sm/index.htm

http://support.ap.dell.com/support/t...gen&~ck=anavml
My System SpecsSystem Spec
.


29 Dec 2009   #4

Windows 7 Home Premium Edition, 64-bit
 
 

So, I guess my question is, does the speed matter? If I buy the RAM, will it work or not?
My System SpecsSystem Spec
29 Dec 2009   #5

XP, Vista, W7 64bit Home Premium
 
 

Unless your gaming you wont notice any speed difference between 333 and 400.
My System SpecsSystem Spec
29 Dec 2009   #6

Windows 7 Home Premium Edition, 64-bit
 
 

And if I am gaming? XD
My System SpecsSystem Spec
29 Dec 2009   #7

Windows 7 x86/x64, Server 2008r2, Web Server 2008
 
 

The 400, but if your mother board does not support it it will drop to the speed it supports, if im not mistaken.
My System SpecsSystem Spec
29 Dec 2009   #8

Microsoft Community Contributor Award Recipient

Windows 7 SP1, Home Premium, 64-bit
 
 

I can't recall the details of SDRAM as it has been several years since I dealt with it.

If your existing RAM is 333 speed, it may well be that even if you bought 400, the new 400 would run at 333---defaulting to the lowest speed of your existing sticks. I'd guess you have 333 as it would have been cheapest for Dell at the time your PC was built.

You could probably run an app like CPU-Z to get more details on your existing RAM.
My System SpecsSystem Spec
29 Dec 2009   #9

Windows 7 Home Premium Edition, 64-bit
 
 

The information CPU-Z gave me didn't seem like it was what I was looking for, but here it is in case someone else can interpret for me.

General
Type: DDR
Size: 2048 MBytes
Channels: Single

Timings
DRAM Frequency: 166.3 MHz (varied between 166.1 and 166.3)
FSB:|RAM: 4:5
CAS# Latency (CL): 2.5 Clocks
RAS# to CAS# Delay (tRCD): 3 Clocks
RAS# Precharge (tRP): 3 Clocks
Cycle Time (tRAS): 7 Clocks

Thanks for all your help!
My System SpecsSystem Spec
29 Dec 2009   #10

Windows 7 x86/x64, Server 2008r2, Web Server 2008
 
 

rct are you running a single stick of ram?
if not move it over one slot you will notice a small increase of performance.
My System SpecsSystem Spec
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 RAM Question - Data Bus Speeds/Memory Speed




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