Why does TigerDirect Advertise Incorrectly?

2048Megabytes

2048Megabytes

Active Member
Here are two examples of RAM that I pulled off TigerDirect.com:

PNY 1024MB PC5400 DDR2 667MHz Memory

Kingston 1024MB PC5400 DDR2 667MHz Memory

Why does it list these memory as having 667 megahertz as the bus speed? Isn't the bus speed of this memory 333 megahertz?

Isn't it also incorrect to label Double Data Rate 2 memory as "PC5400"? The correct label should be "PC2 5400" shouldn't it?
 
333mhz + Dual data rate = 667MHZ as far as saying PC5400 instead of PC2 that was probably a misprint. I order from Tiger sometimes but there at the bottom of my list. Systemax bought them out awhile back and they own the rebate company too they work through, ever wonder why 90% of there stuff has rebates and sometimes getting the rebates are like pulling teeth. Look on Google under Tiger rebates, thousands and thousands of people jumping through hoops just to get the rabate.
 
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The PNY PC2 5400 1 gigabyte of memory is one chip so how can they quote the dual channel rate and say it is 667 megahertz? It has to be an error.

Who do you order computer parts from? I am curious.
 
Well PC2 5400 really runs at 333mhz but it can read and write at the same time dual data rate, 333mhz one way 333mhz the other so 667mhz total. Just like calling DDR 400 when it really runs at 200 mhz. Like mine is PC26400/DDR2800 when it really runs at 400mhz.
 
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I bought a laptop from tiger awhile back and it said it didn't have wireless but when i got it the laptop it had wireless :D
 
StrangleHold said:
Well PC2 5400 really runs at 333mhz but it can read and write at the same time dual data rate, 333mhz one way 333mhz the other so 667mhz total.
Click to expand...

It cannot really do that. It only has one data bus. The double effect comes from the fact that DDR does something on both the rising and the falling edge of the clock, so the effective speed is twice the raw clock
 
Simple DDR Explanation

DDR works by taking a driven clock - front side bus frequency usually and modified by multipliers/divisors, enabling it to run to its rated frequency - and outputting two bits of Data onto the memory bus from the DRAM,s I/O buffers, per driven clock cycle. This is done on the rising and falling edge of that driven clock with DDR, giving it the double data rate moniker; data is read from and written to the bus twice per clock cycle, compared to SDR memory.
 
yes, but it is not divided between read and write (to do both at the same time, you would need seperate busses). For example, if the clock is 333, and you only do reads, you read with effective 666 Mhz.
 
2048Megabytes said:
Here are two examples of RAM that I pulled off TigerDirect.com:

PNY 1024MB PC5400 DDR2 667MHz Memory

Kingston 1024MB PC5400 DDR2 667MHz Memory

Why does it list these memory as having 667 megahertz as the bus speed? Isn't the bus speed of this memory 333 megahertz?

Isn't it also incorrect to label Double Data Rate 2 memory as "PC5400"? The correct label should be "PC2 5400" shouldn't it?
Click to expand...



Can you find one place on the internet where it doesn't advertise like that?
 
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