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About Ram's Mhz


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#1 rebellion534

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Posted 22 March 2008 - 09:26 PM

Hello Forum Members. ok, I just bought two RAMs for my pc, on the box, it says that 400 MHZ, but when i used the program CPU-Z it says that 200 MHZ or something, is there any problem with these, I red the tutorial about the RAM, but its too confusing to understand, im very sorry.

and i have another question, my motherboard has 4 slots for memory, my 1st and 2nd slot has a 512mb 400MHZ ram, and the 3rd is 512mb 266MHZ(OLD), the 4th one is empty, do you think it will work better if i'll remove the 3rd one (the OLD one) or do nothing with it?.

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#2 dc3

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Posted 23 March 2008 - 01:11 AM

It would be a lot easier to help you if you would post the specs of you computer and the RAM modules.

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#3 rebellion534

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Posted 23 March 2008 - 02:21 AM

ok here's the spec. :thumbsup:

thank you dc3.


--- Motherboard ---

Property Value
Manufacturer http://www.abit.com.tw/
Model KD7(VIA KT400-8235)
Version 1.x

Chipset Vendor VIA Technologies Inc
Chipset Model VT8377 Apollo KT400/A/600 CPU to PCI Bridge
South Bridge VT8235 PCI to ISA Bridge
SMBus VIA Technologies Inc VT8235 PCI to ISA Bridge @5000h

CPU AMD Athlon XP
Cpu Socket Socket A
Processor Upgrade ZIF Socket
Max CPU Speed 2250 MHz

System Slots 7 PCI, 1 AGP

Memory Summary
Location System board or motherboard
Maximum Capacity 3584 MBytes
Memory Slots 4
Error Correction None
Use System memory
Maximum Memory Module Size 1024 MBytes

Warning! Accuracy of DMI data cannot be guaranteed



--- MEMORY ---

Property Value
Memory Summary
Location System board or motherboard
Maximum Capacity 3584 MBytes
Memory Slots 4
Error Correction None
Use System memory
Maximum Memory Module Size 1024 MBytes


Device Locator Slot 1
Manufacturer Kingston
Part Number K
Serial Number 80061A13
Capacity 512 MBytes
Memory Type SDRAM DDR
Speed PC3200 (200 MHz)
Data Width 64 bits
Voltage SSTL 2.5V
Error Correction None
Refresh Reduced (.5x)...7.8 Ás
Manufacturing Date 2008, Week 10
EPP SPD Support No


Device Locator Slot 2
Manufacturer Kingston
Part Number K
Serial Number 80063A15
Capacity 512 MBytes
Memory Type SDRAM DDR
Speed PC3200 (200 MHz)
Data Width 64 bits
Voltage SSTL 2.5V
Error Correction None
Refresh Reduced (.5x)...7.8 Ás
Manufacturing Date 2008, Week 10
EPP SPD Support No


Device Locator Slot 3
Manufacturer Kingston
Part Number KVR266X64C25/512
Serial Number 01084176
Capacity 512 MBytes
Memory Type SDRAM DDR
Speed PC2100 (133 MHz)
Data Width 64 bits
Voltage SSTL 2.5V
Error Correction None
Refresh Reduced (.5x)...7.8 Ás
Manufacturing Date 2003, Week 12
EPP SPD Support No

-->> PC3200 are supposed to be 400MHZ? coz it says on the box, i think...

#4 Deemo Diablo

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Posted 23 March 2008 - 03:59 AM

Rebellion:

Your motherboard will run your memory at the speed of the slowest module's interface. That of yours being in slot 3 at 133MHZ which comes out to PC 2100.

Remove the other two and you'll get your full speed of PC3200 which is 200MHZ with a 2x multiplier. DDR stands for Double Data Rate and works like this:

DDR3200 = 200MHZ * 2
= 400MhZ * 8 bits
= 3200 OR 3.2 Gigabytes per second bandwidth. Hence PC3200.

That's why CPUZ is saying your memory is running at 200MhZ. Because that's the base frequency at which your two Kingston modules are operating.

However, if you have PC3200 in slots 1 and 2, and PC2100 in slot 3, the bandwidth for the other two sticks will be limited to 133MHZ (*2) which is what your PC2100 operates at. CPUZ will tell you what your memory is capable of, not necessarily what it's currently operating at. Note the little warning at the top of the report.

Hope this helps!

Deemo Diablo

#5 rebellion534

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Posted 23 March 2008 - 10:56 AM

Rebellion:

Your motherboard will run your memory at the speed of the slowest module's interface. That of yours being in slot 3 at 133MHZ which comes out to PC 2100.

Remove the other two and you'll get your full speed of PC3200 which is 200MHZ with a 2x multiplier. DDR stands for Double Data Rate and works like this:

DDR3200 = 200MHZ * 2
= 400MhZ * 8 bits
= 3200 OR 3.2 Gigabytes per second bandwidth. Hence PC3200.

That's why CPUZ is saying your memory is running at 200MhZ. Because that's the base frequency at which your two Kingston modules are operating.

However, if you have PC3200 in slots 1 and 2, and PC2100 in slot 3, the bandwidth for the other two sticks will be limited to 133MHZ (*2) which is what your PC2100 operates at. CPUZ will tell you what your memory is capable of, not necessarily what it's currently operating at. Note the little warning at the top of the report.

Hope this helps!

Deemo Diablo


hmmm.. so do you think i should remove the PC2100?

#6 Deemo Diablo

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Posted 23 March 2008 - 01:30 PM

After looking at your specs I'd say leave it in. You wouldn't notice an improvement if you took it out since you're only running with a socket 462 processor. So go ahead, leave it in, it won't hurt anything. :thumbsup:

Edited by Deemo Diablo, 23 March 2008 - 01:31 PM.


#7 DaChew

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Posted 23 March 2008 - 01:57 PM

it may be causing you a big performance hit, that looks like a 333/166 fsb mobo, if the cpu is 333 then it will run better if the memory can run in synch with it

everest home free/overclock under computer section will show the details

In some rare instances where the extra 512 megs are needed then it will slow you down to remove it
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#8 rebellion534

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Posted 23 March 2008 - 02:23 PM

After looking at your specs I'd say leave it in. You wouldn't notice an improvement if you took it out since you're only running with a socket 462 processor. So go ahead, leave it in, it won't hurt anything. :thumbsup:


it may be causing you a big performance hit, that looks like a 333/166 fsb mobo, if the cpu is 333 then it will run better if the memory can run in synch with it

everest home free/overclock under computer section will show the details

In some rare instances where the extra 512 megs are needed then it will slow you down to remove it


thank you very much for the help, more power to the forum! :flowers:




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